Category: Wood Burner

Light A Fire By Charmain Ponnuthurai

charnwoodstoves
31 Jan 2024

The next in a series of essays by Charmain Ponnuthurai explores the importance of real fire in a modern world.

Sometimes we don’t, as the classic saying goes, see the wood for the trees. The argument against wood fires has reached this territory, and there is the danger that any understanding becomes lost in a forest of soundbites and clickbait headlines. Each side of the argument of course has biases towards their own interests, and there are, of course, holes in both. However, with the question of peoples’ wellbeing at stake, it is in everyone’s interests to ensure that we are considering all angles and understanding how serious the holes are.

We understand more than ever that physical and mental health do not stand in isolation from each other: instead they feed into one another in a symbiotic relationship. According to Cell Biologist Dr Bruce Lipton, our subconscious is the most potentially harmful component to our overall health, as without an understanding of our subconscious needs and desires, we cannot change our outside circumstances to match. The most harmful action towards our cells, according to Dr Lipton, is our ability to de-program the learnt behaviours from ages one to seven that determine how we react to 95% of dealing with daily life. This stagnation means we are not in touch with ourselves and fail to follow the much simple advice by all spiritual teachings, ‘of being in the moment’.

Technology has irrevocably changed the lives of all of us: we have a constant bombardment of information and data thrown at us, a stream that doesn’t even pause as we walk down the street, or take a journey on a train. We are constantly locked into our phones. This has resulted in an increased sense of anxiety both just when we speak to each other but from the data itself. Endless stimulation is a hard drug to unwind from. The majority of us spend our days behind a screen, on a phone and or talking on zoom calls, rather than meeting each other face to face, compounding the sense of anxiety we all at times share. One of the best ways to relax, then, is to find ways to be still and understand what is determining our actions, through daily rituals such as cooking. As we found in the Charnwood survey, which sampled over 1,200 people, many found solace in their woodburning stoves. The majority of participants in the survey said the most important use of their stove was the sense of wellbeing it brought them. The naturalness and sense of calm of seeing the element of fire and watching the flickering of a flame is something we can all relate to, whether that be from candlelight or a campfire.

It is important, however, to consider how we may use our stoves in the most healthy and environmentally efficient way. We must first consider the difference between efficient stoves and other forms of indoor fire. In the World Health Organisation report on Household Air Pollution it specifically lists that open fires and inefficient stoves, “generates harmful household air pollution” Click here to read more

At Charnwood, our central and ongoing commitment is to efficiency and the environment, to allow you to experience the maximum positive wellbeing effects, without compromising your physical health, or risking damage to your natural surroundings. We ensure efficiency by a constant refinement of the wood-burning process and technology, incorporated within our Eco Design. The key feature is our Quattroflow® Air Management System. You can read more about this here.

Our stoves are designed to run on seasoned or kiln-dried wood. It is very important that the logs you burn have a moisture content of less than 20%.

Hardwoods such as ash, birch, beech or oak are renowned for burning hot, clean and for longer periods. Softwoods such as fir, pine and sycamore can be used but will burn faster with moderate heat output. Freshly cut logs generally contain over 60% water and should be dried for 18-24 months before the wood is ready to burn.

Split wood into logs to a size to suit your stove’s firebox. Split some smaller pieces to use as kindling. Stack the wood in a place that gets plenty of sun and wind.

A pile of wood may rot before it has time to season, so make sure the logs are stacked in a way that allows air to circulate. Ideally, keep the stack off the ground and away from the house. Never stack logs above head height to prevent injury from falling logs. Cover the stack to protect it from rain and snow. You can cover just the top, or the sides as well – just make sure the air can get in and that moisture isn’t getting trapped. Store the wood for 18-24 months or until the moisture content is below 20%. It’s a good idea to bring wood inside two or three days before you intend to burn it to make sure it’s properly dried out and ready to use.

Kiln Dried Wood is another widely available alternative. The wood is cut, split and dried in large ovens, which speeds up the seasoning process. Look out for the Woodsure Ready to Burn label which guarantees a moisture content of 20% or less.

The broader medical understanding we now have of the importance of the link between the body and mind for overall well being reminds us that in order to manage the stress of modern daily life, we need simple rituals that take us back to nature and ourselves. Lighting a fire is one simple beginning, Chef & co-founder of Acme Fire Cult says, “without fire we would never have evolved from having fur”. As long as you follow our tips to ensure your fire is as environmentally and human health friendly as possible, it is sure to work wonders for your physical and mental health.
 

Lighting your fire

Follow our four simple steps when making your fire. By running your stove in

this way you will achieve maximum efficiency with minimum emissions.

● Place 2-3 smaller logs on the stove bed. On top of this build a Jenga

stack of 6-8 kindling sticks and place a natural fire lighter inside

● Close the door but leave it slightly ajar. This helps to heat the chimney

flue for a clean burn. Once the fire is burning well close the door and

reduce the air control.

● Fully open the air control for maximum air intake and a quick and easy

ignition. Light the fire lighter.

● Every time a log is added, open the air control again until the fire is

burning well and then return the air control to normal. Re-fuel little

and often.

Maintain your stove

The winter months are when your Charnwood stove will see the most use.

Regular maintenance will ensure your stove burns safely and efficiently while

giving you many years of service.

● Clean the glass – If soot accumulates on the stove glass we offer an

effective Atmosfire dry wiper for cleaning. For any stubborn stains you

can use a stove glass cleaner or ceramic hob cleaner but avoid using

any abrasive cleaning products.

● Clean the surface – When it comes to cleaning the exterior surface of

your stove and the surrounding area, you can’t go far wrong with a

soft brush and a damp, lint free cloth. It is important you only clean

your stove when it is unlit and cool to the touch.

● Empty Ash Pan – When burning wood it is helpful and effective to

start your fire on a bed of wood ash but avoid letting the ash build up

too much. When your Charnwood stove is not in use empty out the

ash pan and firebox completely.

● Inspect door seals – Take the opportunity to regularly check the rope

seals on the doors and around the flue to ensure your fire box is air

tight and the doors close firmly. A well sealed stove will burn much

more efficiently and effectively.

● Sweep Frequently -It’s important to keep your flue clear of

blockages and soot and we recommend you have your chimney swept

at least once a year. Your Charnwood stove is fitted with a dropdown

throat plate allowing you to sweep through the appliance with

minimum mess.

Read more about the argument surrounding wood fires and why there is more to the story

” Therefore see whether the light that is in you isn’t darkness. If therefore your whole body is full of light, having no part dark, it will be wholly full of light, as when the lamp with its bright shining gives you light.”

Luke 11:34–36

The SIA Expertly Address the Anti-Woodburner’s Misleading Claims on Clean Air Night

charnwoodstoves
26 Jan 2024

The SIA have written a fantastic blog to address the anti-woodburner’s misleading, ambiguous and, in some cases, untrue media campaign. It was released in time for Clean Air Night to give consumers a chance to get both sides of the story. Here we will share the key information as we want to amplify their important voice in this ongoing debate.
 

The claims made here by the London Wood Burning Project (above left) and cleanairhub.org.uk (above right) rely on the grouping of all methods of burning wood (including garden bonfires & firepits) at home. However, the data from the National Atmospheric Emissions Inventory (NAEI) shows us that burning dry wood on an Ecodesign compliant stove accounted for less than 0.1% of total UK PM2.5 emissions in 2021.

Modern stoves offer a range of benefits and you can get both sides of the story and learn more about that here.

Just like the posts above, the term ‘wood burning’ in this post (below) is deliberately ambiguous and takes no account of the type of appliance or quality of the wood fuel.
 

There is reliable evidence that using dry wood and other sustainable solid fuels can help consumers reduce their home heating bills. A recent study by Gemserve for Homefire found that households with gas central heating that adopt zonal heating using dry wood fuel could save up to 7% on their annual heating bill and up to 11% using smokeless solid fuel in the same way.

The same study also found that using renewable, sustainably sourced wood fuel instead of fossil fuel gas results in typical carbon savings of over half a tonne of CO2e / year.

You can read more about this study here
 

The claim (above) that a wood burning stove is six times more polluting than an HGV is hugely misleading.

The claim is based on a report by the European Environmental Bureau published in 2022 that looks at the amount of emissions given off by generating a GJ of heat in a stove compared to the emissions releases generating a GJ of power in an HGV.

The claims made by the study rely on a simplistic calculation using permitted rates of emission. The study also fails to factor in the non-exhaust emissions of the HGV.

What we end up with is an apples and oranges comparison that fails to consider the impact of real-world use. According to a 2020 Defra report, on average stove users light their stoves for between 3.7 and 4.5 hours a day during the winter months. An HGV can be driven by the same driver for up to 9 hours per day, and the vehicle potentially operates 24/7 up to 365 days a year.

This means that over the course of 1 week’s real-world use a Euro 6 HGV actually produces 13 times more PM2.5 (271g) than an Ecodesign stove (20.16g). You can read more on this comparison here.
 

This claim (above) by campaign group Mums for Lungs is ambiguous and relies on the reader not seeking any further information on the data.

The data from the National Atmospheric Emissions Inventory (NAEI) which breaks down UK PM2.5 emissions by activity and source, shows us that in 2021 cigarette smoking accounted for 12 times more PM2.5 in the UK than burning dry wood on an Ecodesign compliant stove did.

Some of the adverts by the cleanairhub.org.uk, part of Global Action Plan, in support of Clean Air Night even contain false claims (see below).
 

This is one example. Contrary to the information given in this post, wood logs have the lowest carbon emission factor of any domestic heating fuel at 0.01kg CO2e per kWh. That’s 1/20th the carbon emissions of natural gas or electricity, and 1/29th that of oil.

Burning dry wood is a modern, Ecodesign compliant stove is a low carbon way to heat you home and can play a key role in helping the UK to meet its net zero objectives.

You can find out more about the benefits of choosing modern stoves here.
 

This statement (above) is false. Woodland management is needed to ensure healthy forests and the ecosystems they support.

Wood fuel is a key component of the woodland management cycle and the economies attached to it. Using wood as fuel also plays a vital role in maintaining woodland diversity, health, and resilience. Locally sourced wood fuel helps support small businesses and reduces the carbon footprint of fuel transport.

You can learn more about the importance of woodland management here
 

This is another misleading statement (above) and one which is actually disproved by the findings of a recent Imperial College study which found that a “clearSkies Level 5 stove demonstrated some benefits for indoor air quality” and that “the biggest increases in PM2.5 concentrations indoors did not relate to indoor wood or solid-fuel burning but instead were a result of cooking…”.

A literature review by commissioned by the SIA and carried out by the University of Manchester found no scientific evidence for adverse health impacts from exposure to the indoor air typically associated with modern, enclosed wood burning stoves.

You can read more about this here

And lastly for something positive. We could not agree more with this post and there are significant reductions (up to 90%) possible in the emissions created by domestic burning by switching from open fires and older stoves to modern, Ecodesign compliant stoves.
 

The SIA encourages all solid fuel stove users to educate themselves on the importance of:

Using the right appliance – if you use an open fire or an older stove it is time to upgrade. A modern Ecodesign compliant stove releases up to 90% less emissions than an open fire and up to 80% less than many older stoves.

Ensuring your stove is fitted by an appropriately qualified competent person e.g. HETAS or OFTEC registered.

Always use good quality fuel. Look for the Ready to Burn logo and never use chemically treated wood or burn waste on your stove.

Get your stove serviced and your chimney swept at least once a year. We recommend NVQ qualified sweeps for this.

You can download this page as a PDF here.

These blogs by SIA members are also well worth a read:

Charnwood Stoves

Certainly Wood

Charlton & Jenrick

Exposing The Anti-Woodburner’s Flawed Data – 5 Key Take Aways

charnwoodstoves
17 Jan 2024

A negative narrative is being unfairly manufactured around the wood-burning stove industry, by anti-woodburning groups such as the ‘London Wood Burning Project’ and ‘Clean Air Hub’.

The TRUTH is that UK PM 2.5 emissions have been steadily decreasing over the years despite record stove sales. In this blog, we summarise the flawed data and unfair generalisations anti-woodburning groups are using.

1/ What do they mean by ‘Wood-Burner’ & ‘Domestic Burning’?

They combine emission sources (Inefficient Old Stoves, Open Fires, Bonfires and Modern Ultra Efficient Stoves) to create a bigger more impactful number, and then claim 17% of London’s emissions come from ‘domestic wood burning’ or ‘wood burners’. Catch-all terms the public understandably associates most often with wood-burning stoves – especially because they create ad campaigns prominently featuring images of wood stoves. However, the actual contribution of modern wood-burning stoves is estimated by the UK government’s official figures at just 1-2%! (1)

2/ They use Weak Science & Manipulate Data

Imprecise methodology

Their data collection relies heavily on estimations and ambient air sampling, offering a blurry picture at best. Traffic, construction, industrial processes and even natural dust all contribute to PM2.5 and cannot reliably be controlled in their methodology.
 

(Pg.20 of the LWBP report)

Walking around with modified backpacks does not allow them to distinguish in any way what the source of PM2.5 is in a given area.

Small sample sizes and insufficient testing equipment.

One of the major studies often cited, is by Rohit Chakraborty et al, and based on a sample size of just 19 homes that took measurements using, as they admit, “low-cost air quality monitors” (7)

Manipulated data

They exclude critical data to stack the narrative against wood-burning stoves. For example, comparing the emission rates between wood stoves and HGVs has caused unnecessary concern.

Closer inspection revealed their data excluded brake and engine wear and in fact, just one Euro 6 HGV produces 13 times more PM2.5 emissions than an Ecodesign wood-burning stove over the course of a week’s real-world use. Furthermore, emissions from HGVs are emitted at ground level (nearer head height) while wood smoke is dispersed more safely, higher up via a chimney flue. (8)

3/Claims Based on Their Opinion NOT Fact

In the bottom left-hand corner of every page of the London Wood Burning Project report you can see the following disclaimer:

“This report is the independent expert opinion of the author(s)”

Firstly, anyone can claim to be an expert, however, the key word here is ‘opinion’.

Well, the SIA has commissioned extensive independent research which casts serious doubt on the estimations and ‘opinions’ provided by anti-woodburners (6)

We highly encourage you to read this report undertaken by Dr Amanda Lea-Langton, senior lecturer in Bioenergy Engineering at the University of Manchester:

https://stoveindustryalliance.com/wp-content/uploads/2022/04/22-04-11-Indoor-air-final-V5-AL.pdf

4/ The Official Data is POSITIVE!

 

At the time of writing the original blog post (11/01/2024) on a very cold winter’s day when wood stove usage would typically be higher, here is the PM2.5 picture for the UK taken from DEFRA’s official website.

So, when the anti-woodburners say 17% of emissions. It is 17% of a very low amount in the first place. Then, remember modern wood-burning stoves are just 1-2% of that low amount.

5/ Modern Stoves Equal Lower Emissions with HUGE Benefits

-They produce heat reliably for sustained periods and are unaffected by the weather.

-Allowing them to work in tandem with wind, solar and other green heating solutions. A stove makes these great technologies more viable – They are not in competition with each other.

-Energy Security – a wood-burning stove is an ideal emergency/low-frequency heat source.

-Wood stoves are essential for off-grid, sustainable, eco-friendly living. Perfect for yurts and other tiny home accommodations.

-Wood is a carbon-neutral fuel as it gives off the same amount of carbon whether it is burnt or decays naturally. The carbon released from burning wood is balanced out by the carbon absorbed by the tree during its lifetime.

-Wood fuel can be sourced locally without fracking and deep-sea oil drilling.

-A good quality stove can last many decades and provide an affordable source of heat for low-income households.

-The right to repair. The majority of components used within a Charnwood stove are modular and can be replaced when or if they wear out further extending the life of your stove.

-There are significant well-being benefits from using a wood-burning stove. Read about the Charnwood wellbeing survey and all the amazing benefits of owning a stove for your wellbeing.

_____________

For more information check out the main article:  

Smoke And Mirrors: Exposing The Flawed Data Behind The War On Wood Stoves 

& 

Wood-Burning Stove’s Co-Heating Future (A Nuanced Look At PM 2.5 Emissions)   

 

 

Smoke and Mirrors: Exposing the Flawed Data Behind the War on Wood Stoves

charnwoodstoves
12 Jan 2024

We don’t enjoy having to react to media sensationalism, however, there are times when it feels important to set the record straight. A negative narrative is being unfairly manufactured around the wood-burning stove industry, by anti-woodburning groups such as the ‘London Wood Burning Project’ and ‘Clean Air Hub’. Their campaigns repeatedly use misleading claims and stats to scare the public and they refuse to answer questions directly when challenged.

Therefore, we feel it is a duty to set the record straight, so people don’t succumb to the haze of misleading information out there. In this blog, we will shed light on some of the flawed data and unfair generalisations anti-woodburning groups are using.

What do they mean by wood-burner?

  

The campaigns paint a distorted picture, often using anxiety-inducing imagery and negative attention-grabbing headlines based on sweeping generalisations and weak or inaccurate data. They continue to mislead the public using stats that lump modern wood-burning stoves in with outdated, inefficient models, open fires and bonfires. It’s like saying cyclists are equally to blame for traffic congestion/emissions as lorries and private cars just because they all use wheels!  

They combine emission sources for a more impactful number, and then claim 17% of London’s emissions come from ‘domestic wood burning’ or ‘wood burners’. Catch-all terms the public understandably associate most readily with wood-burning stoves – especially because they create ad campaigns which prominently feature images of wood stoves. However, the actual contribution of modern wood-burning stoves is estimated by the UK government’s official figures at just 1-2%! (1)  

Differentiating between wood-burning practices is vital for progress  

Firefly London points out: “The irony of the billboard placement is that London’s tube network has appalling air quality, with PM 2.5 readings peaking at 600-700 ug/m3 – that’s 100 TIMES MORE PARTICULATES than an average London street…”

It is essential to differentiate between various forms of wood-burning. Chief Medical Advisor Chris Whitty in his report acknowledges this saying, “For air pollution emissions, there is substantial difference between the different open fire and stove designs, the age of the appliance and how well maintained it is, and the moisture content of the wood, for those who want to burn wood.”(2) 

While Ecodesign-compliant stoves are up to 90% more efficient than an open fire, ClearSkies Level 5 stoves, are even better still. They surpass Ecodesign standards, offering a further reduction in emissions by up to 30%! (3)  

This is where the anti-woodburning strategy is so incredibly counterproductive. In London 70% of wood burning still occurs on open fires. (4) If people were widely encouraged to switch to one of the many modern and efficient wood-burning stoves available, it would massively reduce urban PM 2.5 emissions. Just think, the emissions of 70% of London Wood burning could be reduced by 90%!  

Modern wood-burning stoves could help London reduce open-fire emissions by 90% ! 

 

PM 2.5 comes from such a wide array of natural and man-made sources that a zero-emission world is impossible! The best we can do is reduce them as much as possible while maintaining our ability to heat our homes. That is exactly what modern wood-burning stoves help achieve.   

If improvements were what the anti-woodburning brigade was truly after, it doesn’t make sense to ignore the vast advancements in clean-burn technology now defining modern wood-burning stove heating. They are the ones being ‘careless’. 

PM 2.5 perspective: How stoves can HELP improve indoor air quality 

 

This is also totally misleading. We could draw on our sources, but more powerfully we can draw on the London Wood-Burning Project’s own report as a rebuttal to this one. 

On page 71 of their 127-page report (5), we find the page titled Key Findings. Below are 3 crucial pieces of information from this page:  

1/ Use of the clearSkies Level5 stove (which is Ecodesign compliant) demonstrated some benefits for indoor air quality. Indoor PM2.5 did not increase when adding fuel to the stove once lit… At times there was actually a decrease in indoor concentrations of PM2.5 when adding fuel.  

As we have long pointed out, a properly functioning modern wood stove draws particulates out of the room and up the flue, helping improve air quality and ventilation in the home. The stove used in this study was our Charnwood C-Five.  

2/ Increases in pollutant concentrations may be more affected by participant technique or specific airflow characteristics of an individual appliance, rather than to the type of appliance or fuel.  

We always encourage best stove practices and will continue to do our level best to educate new and existing customers and beyond.   

3/ However, the biggest increases in PM2.5 concentrations indoors did not relate to indoor wood or solid-fuel burning but instead were a result of cooking, especially frying, grilling and use of the oven, and particularly when the extraction fan was not used.  

This really provides perspective on the issue of PM 2.5 in the home. A slice of burnt toast or your Sunday lunch can contribute far more than a wood-burning stove.  

 It’s a shame they don’t plaster these findings on a bus or large poster. 

A lack of scientific rigour 

Imprecise methodology  

“The results were compared to modelled wood and solid-fuel burning emissions to identify areas where the measurements match well with predictions or where measurements may provide evidence of solid-fuel burning that were not predicted by the model.” (pg.9 of the LWBP report)  

They do not sufficiently differentiate between the different sources of ‘solid fuel burning’. Data collection relies heavily on estimations and ambient air sampling, offering a blurry picture at best. Traffic, construction, industrial processes and even natural dust all contribute to PM2.5 and cannot reliably be controlled in their methodology. 

(Pg.20 of the LWBP report)

Walking around with modified backpacks does not allow them to distinguish in any way what the source of PM2.5 is in a given area.  

Small sample sizes & poor testing equipment 

One of the major studies often cited, is by Rohit Chakraborty et al, and based on a sample size of just 19 homes that took measurements using, as they admit, “low-cost air quality monitors” (7) 

Manipulated data 

Data is also often twisted and cherry-picked to bolster a blinkered argument. For example, comparing the emission rates between wood stoves and HGVs has caused much unnecessary concern.  

Closer inspection revealed their data excluded brake and engine wear and in fact, just one Euro 6 HGV produces 13 times more PM2.5 emissions than an Ecodesign wood-burning stove over the course of a week’s real-world use. Furthermore, emissions from HGVs are emitted at ground level (nearer head height) while wood smoke is dispersed more safely, higher up via a chimney flue.  

The SIA say, “ The claims are based on simplistic calculations using permitted rates of emission and do not consider either real world use or non-exhaust emissions. Furthermore, these permitted emissions rates rely on vastly differing measurement protocols and techniques. It should also be noted that there are several unreferenced assumptions, and the report does not appear to have been independently peer reviewed.” (8) 

Expert ‘opinion’  

In the bottom left-hand corner of every page of the London Wood Burning Project report you can see the following disclaimer: 

“This report is the independent expert opinion of the author(s)” 

Firstly, anyone can claim to be an expert in whatever they like, however, the key word here is ‘opinion’.  

Well, the SIA has commissioned extensive independent research which casts serious doubt on the estimations and ‘opinions’ provided by anti-woodburners (6). Experts question the methodologies and point out the lack of robust data used to support their dramatic claims.  

We highly encourage you to read this report undertaken by Dr Amanda Lea-Langton, senior lecturer in Bioenergy Engineering at the University of Manchester:  

 https://stoveindustryalliance.com/wp-content/uploads/2022/04/22-04-11-Indoor-air-final-V5-AL.pdf 

 We have listed some of the key findings below: 

-No scientific evidence found for adverse health impacts from exposure to the indoor air typically associated with modern, enclosed wood burning stoves

-No association shown between exposure to indoor wood burning and risk of asthma in developed countries

-Use of modern wood burning stoves may help to improve air quality inside the home due to the natural draught created during wood stove operation that pulls air from the room into the appliance and from outside

-Other sources of particulate matter in the home, such as cooking, can release much higher levels of PM compared to modern, enclosed wood burning stoves, and could therefore havegreater health risk potential

-In one study, oil-based cooking, such as frying food or grilling meat, had peak value PM concentrations significantly higher than the WHO recommended average 24hr exposure limit

-In the same study the Ecodesign wood burning stove indoor air quality averages during operation were below the WHO recommended limits

 The official data (the truth) is good news!

And how about this for good news? The TRUTH is that UK PM 2.5 emissions have been steadily decreasing over the years despite record stove sales (please see the short video above). This is data taken directly from DEFRA and is a scientific and unbiased representation of the air quality in the UK. Whilst there is more we can all do, the evidence is resoundingly positive. 

At the time of writing (11/01/2024) on a very cold winter’s day when wood stove usage would typically be higher, here is the PM2.5 picture for the UK taken, once again, from DEFRA’s official website.  

https://uk-air.defra.gov.uk/forecasting/ 

So, when the anti-woodburners say 17% of emissions. It is 17% of a very low amount in the first place. Then, remember modern wood-burning stoves are just 1-2% of that low amount. 

Modern stoves equal lower emissions with HUGE benefits 

Next time you encounter someone who questions the benefits of modern wood-burning stoves, here is a list you can reel off! 

1/ They can produce heat for sustained periods and are unaffected by external factors such as the weather. 

2/ Allowing them to work in conjunction with wind, solar and other green heating solutions. A stove makes these great technologies more viable – They are not in competition with each other. 

3/ A wood-burning stove is an ideal emergency/low-frequency heat source. 

4/ Wood is a carbon-neutral fuel as it gives off the same amount of carbon whether it is burnt or decays naturally. The carbon released from burning wood is balanced out by the carbon absorbed by the tree during its lifetime. 

5/ Wood fuel can be sourced locally without fracking and deep-sea oil drilling. 

6/ A good quality stove can last many decades and provide an affordable source of heat for low-income households. 

7/ The right to repair. The majority of components used within a Charnwood stove are modular and can be replaced when or if they wear out further extending the life of your stove. 

8/ Charnwood stoves and packaging are fully recyclable. 

9/ There are significant well-being benefits from using a wood-burning stove. Read about the Charnwood wellbeing survey and all the amazing benefits of owning a stove for your wellbeing. 

Building a Collaborative Path Forward 

The wood-burning stove community’s voice in this debate isn’t just about defending an industry; it’s about ensuring a fair and balanced path towards a cleaner and more energy-secure future. Targeting outdated appliances, promoting responsible practices, and encouraging sustainable forestry practices would yield far greater results for all. 

Modern wood-burning stoves offer many benefits beyond warmth. They provide energy independence, encourage mental wellbeing, support rural communities, and help foster sustainable forestry practices. Responsible utilisation of modern wood-burning stoves can absolutely coexist with clean air initiatives, without compromising the environment. 

We are passionate about building on our 50 years of experience leading developments in the industry and producing the most efficient stoves on the market. We understand why people want to reduce PM2.5 emissions even further and we support doing more to achieve this. That is precisely why we continue to invest significantly in technological advances rather than sensationalist marketing campaigns. 

Thank you for reading and please share if this has resonated with you. 

_____________ 

Further reading: 

Here is a link to an article which explains why modern wood-burning stoves will continue to be an essential heating solution long into the future. Wood-Burning Stove’s Co-Heating Future (A Nuanced Look At PM 2.5 Emissions)  

 

References: 

(1)https://stoveindustryalliance.com/domestic-indoor-wood-burning-emissions-significantly-lower-than-previously-thought/  

(2)https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1124738/chief-medical-officers-annual-report-air-pollution-dec-2022.pdf 

(3)https://www.clearskiesmark.org/about-us/certification-system-explained/ 

(4)https://www.gov.uk/government/publications/summary-results-of-the-domestic-wood-use-survey  

(5)https://www.imperial.ac.uk/media/imperial-college/medicine/sph/environmental-research-group/London-Wood-Burning-Project-Report_final.pdf 

(6)https://stoveindustryalliance.com/wp-content/uploads/2022/04/22-04-11-Indoor-air-final-V5-AL.pdf 

(7)https://www.mdpi.com/2073-4433/11/12/1326/html 

(8)https://stoveindustryalliance.com/sia-responds-to-wood-burning-stove-and-hgv-emission-comparison/ 

 

 

Is your stove ready for winter?

charnwoodstoves
03 Jan 2024

Now that the winter is in full swing, and the days are darker and colder, many of us are spending more time indoors.

And when the temperature drops, there’s nothing better than hibernating indoors, warm and snug in front of the stove. However, you must make sure that your stove is ready for the winter months.

We’ve created a helpful guide outlining how you can ensure that your stove is ready for winter.

 

Conduct a thorough stove examination

To make the most of your stove and maximise its longevity, it’s important that you conduct regular maintenance checks to ensure that your wood burning stove remains in sound working order, especially during the colder months of the year.

First and foremost, you should conduct a thorough examination, checking the below elements.

 

Clean out the ash pan

Most people begin their wood burning stove winter maintenance by emptying the ash pan. However, it’s important that you ensure that the stove is cold and remember, you should always wear protective gloves when cleaning your stove.

The ash pan can easily be cleaned out by using a small shovel to take the burnt ash from the bottom of the pan and dispose of it in a metal bucket. As a general rule of thumb, you should never keep warm ash indoors as it can cause a build-up of carbon monoxide. At the same time, all ash should be stored for at least 24 hours outside before it is disposed of.

 

Check all air holes are clear

Next, you should check that all air holes are clear and free from any debris buildup. After all, it’s not uncommon for dust, dirt and other elements to accumulate in your stove during Spring and Summer when it is not used as much or at all.

Clearing all air holes will ensure that a vital flow of oxygen can access your fire, optimising efficiency.

 

Check stove rope

Now you should take the time to check your stove rope, which can be found around the seals of your stove doors. If you do spot any sign of damage, when you are opening and shutting the door it should be addressed straight away, especially if you identify any gaps.

 

Remove any flammable objects

Before you start using your wood burning stove again, it’s important that you remove any

flammable objects from the area around your stove including decorations and combustibles such as plastic, wood-based products, carpet, textiles and upholstery.  You will be amazed at how many flammable household items can end up next to your stove when it is not being used.

Also explore how best to prepare for the winter energy crisis with a wood-burning stove.

 

Test your smoke and carbon monoxide alarms

When the time comes to get your stove ready for Winter, you should also test your smoke and carbon monoxide alarms, as it is vital that these are in sound working order.

 

Start to bring in some seasoned wood into your property

Now it’s time to start stocking up on seasonal wood so that you are good to go! Remember to always store your wood in a dry space.

 

Also explore our main reasons why it is essential to have a wood-burning stove during the winter.

 

Why choose us?

Founded in 1972, we are a privately owned, family-controlled, British company specialising in the design and manufacture of high-quality wood burning and multi-fuel stoves. We are committed to providing the highest quality stoves, at the best possible price.

We also have a firm focus on protecting the environment and ensuring our operations are sustainable and responsible.

We operate a policy of caring for the environment in all aspects of the business; from the products we design, to the way we package them, to the way we transport them, to the way we deal with the disposal of waste products, to the vehicles we use, to our choice of raw materials.

 

Get in touch now

If you have any questions about our wood burning stoves, please get in touch with a member of our team today.

How to Check Firewood Moisture Content

charnwoodstoves
11 Dec 2023

When it comes to heating our homes, firewood is a popular choice. However, using wet or improperly seasoned firewood can lead to reduced efficiency, increased smoke and even potential chimney fires. This article will guide you through the process of checking firewood moisture content, understanding the ideal moisture levels, and recognising the importance of properly seasoned firewood for optimal burning.

 

Checking Firewood Moisture Content

 

What should the moisture level of logs be?

To achieve efficient and clean burning, firewood should be properly seasoned to reach an ideal moisture level. The optimal moisture content for firewood is generally considered to be around 15-20%. Anything above 20% is considered wet, while below 15% is considered overly dry.

 

How do you know if firewood is dry enough?

There are a few methods you can use to check how moist your firewood is.

 

Visual Inspection

Inspect the firewood for visible signs of moisture such as bark that is still attached, discolouration of the log, or a dull appearance. Wet wood tends to be heavier (because of the weight of the water) and may show signs of mould or fungi growth.

 

Sound Test

Tap two pieces of firewood together. If they produce a dull thud or a heavy sound, it indicates higher moisture content. Dry firewood will sound hollow and produce a sharper noise.

 

Moisture Meter

Investing in a moisture meter is an excellent way to accurately measure the moisture content of firewood. These devices use metal prongs to penetrate the wood and provide a digital readout of the moisture percentage. Because they provide a specific number, moisture meters are the most accurate method of determining firewood moisture content.

 

Why is firewood’s moisture level important?

Understanding the importance of firewood moisture levels is key to efficient and safe burning. Here are a few reasons why it matters:

 

Energy Efficiency

Wet firewood contains a significant amount of moisture, which requires extra energy to burn off. This energy is wasted as it is used to evaporate excess water rather than generate heat. Properly seasoned firewood with ideal moisture levels (15-20%) maximises energy efficiency.

 

Reduced Smoke and Pollution

Burning wet firewood produces more smoke, particulate matter and harmful pollutants. By using dry firewood, you can minimise smoke production and reduce environmental pollution.

Check out the best firewood to burn chart UK here.

 

Chimney Safety

Wet firewood can create excessive creosote build-up in the chimney, which increases the risk of chimney fires. Properly seasoned firewood has the right moisture content and thus reduces the likelihood of dangerous amounts of creosote building up in your chimney.

Find out our firewood storage suggestions here.

 

Can firewood be too dry?

While it’s essential to avoid using wet firewood, excessively dry firewood can also pose challenges. Extremely dry firewood burns quickly and can lead to an overly hot fire that may damage your fireplace or wood stove and is likely to be uncomfortable for you and your family.

The best way to check if certain firewood is too dry is with a moisture meter as it will give you an easy-to-read percentage – anything less than 15% is too dry. In the rare event that your wood is too dry, mix it in with regular firewood to help raise the moisture content.

Find out everything you need to know about firewood here.

 

Why Choose Us?

Charnwood has been committed to providing quality wood-burning stoves since 1972 and we know all there is to know about wood burners, and how to get the most out of the wood you burn. If you have any questions about heating your home with a wood-burning stove, please get in touch.

 

How to Prevent Carbon Monoxide from Wood-Burning Stove

charnwoodstoves
10 Dec 2023

Wood-burning stoves are a popular way to heat homes because they offer an unparalleled source of comfort and warmth, however, it is important to be aware of carbon monoxide (CO) and the potential threats associated with its emissions.

Carbon monoxide is a colourless, odourless gas that can be very dangerous if inhaled in high concentrations. In this article, we will discuss the dangers of carbon monoxide, symptoms to look out for and, importantly, effective strategies for preventing carbon monoxide issues when using a wood-burning stove.

 

Why CO Is So Dangerous

Carbon monoxide is a dangerous gas because it binds to haemoglobin in the blood and reduces its ability to transport oxygen effectively. This can lead to oxygen deprivation and carbon monoxide poisoning. The gas can accumulate indoors and pose a severe threat, especially in poorly ventilated spaces. Even low levels of carbon monoxide exposure can result in long-term health issues.

Find out our commonly asked questions around wood-burning stoves here.

 

CO Exposure Symptoms to Look Out For

Recognising the signs of carbon monoxide exposure is key for early detection and prevention of severe consequences.

Headaches and dizziness are common initial symptoms of carbon monoxide poisoning; exposure can also cause nausea and vomiting, often accompanied by a general feeling of being unwell.

Excessive tiredness, confusion, and difficulty concentrating are further signs of carbon monoxide poisoning. These symptoms can be particularly dangerous as they may impair judgment and hinder your ability to recognise the risk.

If you or anyone in your home experiences any of these symptoms while using your wood-burning stove, immediately ventilate the area and seek fresh air, and consult a medical professional.

 

How to Avoid Carbon Monoxide Problems

While the effects of carbon monoxide inhalation can be severe, it is thankfully easy to minimise the risk by following some simple precautions.

 

Clean Out Your Wood-Burning Stove

Regular maintenance is essential for the safe operation of your wood-burning stove. Cleaning the stove and its flue system helps prevent the build-up of creosote, a highly flammable substance that releases carbon monoxide and can lead to chimney fires.

Regularly remove ash (leaving about an inch in the base) and debris from the stove’s interior, including the firebox, grate, and ash pan. Use a metal scoop or shovel designed for this purpose. Dispose of the ashes in a metal container placed away from flammable materials.

Find out how to clean your wood-burning stove here.

 

Get Your Flue Inspected Annually

It’s also important to have a clean chimney and flue. Schedule annual professional inspections and cleanings to remove creosote and other blockages from your chimney and flue system. A qualified technician will ensure that the flue is clear, reducing the risk of carbon monoxide build-up.

An annual inspection should include:

• Inspecting the flue for any cracks, leaks or damage that could result in the escape of carbon monoxide.

• Ensuring that there are no blockages or obstructions in the chimney, such as nests or debris. These can impede proper ventilation and increase the risk of carbon monoxide buildup.

• Assessing the combustion efficiency of your wood-burning stove. They will ensure that the stove is operating at its optimal level, minimising the production of carbon monoxide.

 

Provide Sufficient Ventilation

Proper ventilation is crucial to minimise the risk of carbon monoxide build-up. Ensure your stove is installed in a well-ventilated area, and that your home has adequate fresh air intake. Keep air vents unobstructed and consider installing a vent fan to improve air circulation.

 

Install Carbon Monoxide Alarms

Installing a carbon monoxide alarm is a crucial safety measure for any home with a wood-burning stove. These alarms can detect the presence of carbon monoxide gas and alert you to its presence, allowing for swift action.

Install a carbon monoxide alarm on each level of your home and near sleeping areas. Ensure they are mounted in accordance with the manufacturer’s instructions for placement, and test your carbon monoxide alarms regularly to ensure they are working properly.

Explore how to use a wood-burning stove here.

 

Burn the Correct Fuel

Another important precaution to take is using only the correct fuel – this is paramount for safe wood-burning. Burn only seasoned hardwood that has been properly dried; it burns more efficiently, produces less smoke and reduces the risk of carbon monoxide emissions.

Do not burn treated or painted wood in your stove. These materials can release toxic chemicals when burned, including carbon monoxide.

 

Why Choose Us?

Charnwood has been committed to providing quality wood-burning stoves since 1972 and we know all there is to know about wood burners, and how to use them safely while providing the utmost in warmth and cosiness. If you have any questions about heating your home with a wood-burning stove, please get in touch.

 

Is it Safe to Leave a Wood Stove Burning at Night?

charnwoodstoves
05 Dec 2023

Have you been using your wood-burning stove and are wondering if it is safe to keep burning overnight? Charnwood Stoves explains everything. Read below.

Wood burners and wood-burning stoves can significantly reduce a home’s heating bill making it an attractive alternative to electric, gas and oil heating for many homeowners.

Not only that, but research suggests that installing a log burner can even increase your home’s value by around five per cent. Additionally, a wood-burning stove can be used to heat not just the room it sits within, but the whole house.

For this reason, wood stoves and log burners have become immensely popular. The demand for wood-burning stoves has soared in recent years as households look for affordable ways to keep warm during freezing temperatures and an energy crisis.

Wood stoves can burn for hours providing homeowners with cost-effective and efficient heating solutions. However, many people with newly installed log burners and wood stoves wonder whether it is safe to leave their wood stoves burning at night.

This blog will mention everything you need to know about keeping your wood-burning stove on overnight.

 

Can You Leave Your Wood Stove On?

The safety of your home is of key importance. Leaving a burning fire unattended can be dangerous however, by following some key steps it is possible to keep your wood stove burning to warm your home at night.

 

Limit the Air Getting to the Fire

Once the flames have dampened down, it is important to close your stove’s air events to control and limit the air getting to the fire. Oxygen causes embers to increase in heat and strength causing the fire to burn faster. Charnwood stoves feature a simple, single air control that can be pushed in to slow the the burn to a slumber.

 

Check Your Space

The more space you have around your wood stove, the more effectively it will heat the room and the safer it will be. If there isn’t enough space around the stove for air and heat to circulate, the performance may be hindered.

What’s more, your wood stove burner must also be a suitable distance away from combustible materials, especially when left unattended at night. It is important never to stack logs close to the sides of your stove.

 

Maintain Your Chimney

If you have a wood stove, you need to have your chimney swept at least once a year to prevent the risk of a chimney fire. Soot and creosote will naturally collect in a chimney after using a wood-burning stove. If not regularly cleaned away, this can cause a chimney fire hazard. Regularly maintaining your chimney by having your chimney swept will allow the free passage of combustion gases to prevent carbon monoxide poisoning and chimney fires. Additionally, chimney sweeping will also remove foreign objects from your chimney such as bird nests, cobwebs, and other blockages.

 

Use the Right Wood

Using the right type of seasoned wood and stacking it correctly in your wood stove ensures the fire burns for much longer. Furthermore, continually burning improperly seasoned wood can cause a build-up of creosote deposits in the chimney. This not only affects the performance of the stove but can also lead to dangerous chimney fires.

Some types of wood, such as driftwood, are poisonous and release toxic chemicals into the air when burnt. This is another reason why you should always choose the right wood for your wood-burning stove carefully.

 

Explore the best firewood to burn in the UK.

 

Key Points to Take into Consideration

The key points to take into consideration when leaving a wood stove to burn at night, include:

• Are the air vents closed to control and limit air that can get to the fire?

• Are all combustible materials, such as paper and candles, placed within a safe distance of the wood stove?

• Does your chimney get regularly swept? Is there any risk of a chimney fire?

• Are you burning the right type of wood in your wood stove?

 

Also explore the 7 top reasons to buy a wood-burning stove.

 

Why Choose Us?

At Charnwood Stoves, we specialise in the design and manufacturing of high-quality wood burning and multi-fuel stoves.

As the oldest British manufacturer of wood-burning stoves, run by second and third generations of the family we are dedicated to providing products of enduring design and of the highest quality.

From the products we design and the way we package them, to the way we transport them and the way we deal with the disposal of waste products, we operate a policy of caring for the environment in all aspects of the business.

 

Get in Touch Now

For more information or to see how we can help, get in touch today.

Going Inwards By Charmain Ponnuthurai

charnwoodstoves
29 Nov 2023

The next in a series of essays by Charmain Ponnuthurai is about ‘Going Inwards’. Charmain (Dammy) is the author of Midnight Feasts: An Anthology of Late-night Munchies, and founder of Larder and Crane cookware.

________________

And after the earthquake a fire; but the LORD was not in the fire: and after the fire a still small voice.And it was so, when Elijah heard it, that he wrapped his face in his mantle, and went out, and stood in the entering in of the cave. And, behold, there came a voice unto him, and said, What doest thou here, Elijah? – Kings 19 verses 12-13

The first shiver of Autumn, brings to us thoughts of roaring fires, cosy layers, soft blankets and warming food. Though with the drawing in of the nights and the reduced length of daylight, we increase our time for contemplation and the opportunity to hear that still small voice within us. We live in a time of rapidly progressing AI, which some fear will render much of all work obsolete. In such a scenario, many of us would have to find meaning elsewhere. Regardless of whether our lives are reimagined by AI, a human search for meaning exists, a humane search for empathy and connection. The most independent of us are not immune to feelings of loneliness and a requirement for warmth that no matter how clever the robot, it cannot be surpassed by what tactility offers.

One simple reach towards feeling connection can be found in the simple daily need for nourishment. There are so many off the shelf prepackaged solutions for our ‘busy lives’, that tie in with the materialistic goals of efficiency and valuable results. Though it is in the very act of cooking and sharing food, where we can find the time for a moment to connect and be entirely present with ourselves and others. As winter draws closer, we may wake up feeling uninspired by the rain lashing at our window, and the daily news grind of the troubles that face us both in our own communities and together as a planet. The act of being nourished and nourishing others holds a sacred place; such a basic act comprises a rare, untarnished purity, like the simple comforting sound of a purring cat. The process of preparing, cooking, and laying the table gives us the opportunity to listen to that still small voice which can be so hard to hear within us, in the midst of burgeoning communication channels that keep us distracted.

The journey inwards brings us solace against the chill of the elements and brooding skies. We become concentrated on our homes as a solace from the hibernation of the sun and look forward to the thought of lighting a fire, playing some music and enjoying the pleasure of comfort cooking. We think of tucking into slow cooked stews, silken soups and puddings that invoke the nostalgia of childhood such as old school rice pudding, or a constantly renewing stack of pancakes. As the song by Spike Jones goes, “Pack up your troubles in your old kit bag, And smile, smile, smile. Don’t let your joy and laughter hear the snag…”

In the essay ‘A Purple Future’, Daniel Pinchbeck speaks of how we have lost the knowledge of ancient and indigenous cultures, of our connectivity with one another. Pinchbeck suggests this is, ‘an underlying consciousness that is indivisible, instinctive, timeless and spaceless and without boundary.’ We have instead turned to a way of living that quantifies everything by measurable value and outcomes. It is of course hard to sometimes reach into this thought process, when we are faced with the rising costs of living and an uncertainty of basic material requirements. Though as with all human progress, our fears have become so strong that they curtail the freedom to be creative as we try to grip onto certainty. We can see as a simple observation that with young children, who are unencumbered with anything but the moment that joy is always present and experimentation paramount as they learn about the world around them.

The lead into winter and the early nights drawing in some way gives us this sacrosanct time in which to pause, to cook that slow stew and undertake simple acts such as lighting a fire. These moments allow us to open ourselves to the silent possibilities and creativity that arise from ‘hunkering in’ so we may begin to see new shafts of light as we navigate our way through the darkness.

“The goal of life is not to possess power but to radiate it’ Henry Miller

________________

If you haven’t read Charmain Ponnuthurai’s piece on ‘storytelling’ click here – we highly recommend it! 

What wood can you not burn in a log burner?

charnwoodstoves
16 Nov 2023

With the colder, darker months fast approaching, autumn is well and truly upon us.

And, with chunky knits, boots and jumpers already making an appearance, many people are thinking about how they’ll keep their homes warm and snug during the winter months.

Over recent years, wood burners have increased in popularity, with many people considering them to be an effective way to heat their homes for less during the ongoing energy crisis.

However, it’s important to remember that not all types of fuel are suitable for use in a wood burner. In fact, using the incorrect wood can increase maintenance costs, deliver poor stove performance, and even prove to be dangerous.

 

Types of wood to avoid

Within this guide, we’ll take a look at the types of wood you should avoid or burn with caution when using your wood burning stove.

 

Old pallets and treated timber

However tempting it may seem avoid burning pallets and treated timber. Paint, varnishes and oils can give off harmful emissions and can damage your stove and chimney.

Pine

Because pine has a high resin content, it is not considered the best wood to burn on a log burner. It burns quickly and the resin can seep out and clog up different parts of the stove system, which can lead to a whole host of operational problems. If you do choose to burn pine ensure it is well seasoned.

 

Larch

Much like Pine, Larch contains high levels of resin, which forms sticky deposits inside of the stove and flue.

 

Poplar

Poplar doesn’t burn for long periods of time and, when it does burn it can be smoky. As a result, it isn’t a good choice for a wood burner.

 

Laburnum

Laburnum is poisonous when used as firewood so should not be used as fuel for a log burner.

 

Alder

Alder produces a relatively low heat output, and is renowned for popping and sparking as it burns. This type of wood burns quickly but produces very little heat.

 

Chestnut

Most varieties of chestnut are okay to burn on a log burner, however, you should be aware that they tend to spit and spark, meaning many people are reluctant to use them.

 

Cypress

Cypress isn’t ideal as your main firewood source as it provides a low heat output and doesn’t produce very good coals.

 

Spruce

Spruce produces little heat making it an ineffective fuel for a log-burning stove.

 

Willow

Firewood should contain a moisture content of below 20%. Willow tends to grow in wet soils or beside water bodies, giving it a high moisture content so if you choose to burn it ensure it is dry and well seasoned.

 

Learn more about the different types of firewood.

 

What wood can I burn on a log burner?

Although there are many types of wood that shouldn’t be used on a wood burner, there are also many that you can use for fuel, including:

 

Hardwood firewood

Hardwoods, including ash, birch, maple, oak, and the majority of fruit trees, are some of the best fuels for wood burning stoves due to the fact that they can burn for long periods of time while generating plenty of heat. Hardwood is also cleaner to handle than other types of wood.

 

Softwood firewood

Some softwoods tend to be cheaper than hardwoods and can also be used in your wood burning stove.

 

Explore the best firewood to burn in the UK.

 

Why choose us?

Founded in 1972, we are a privately owned, family-controlled, British company specialising in the design and manufacture of high-quality wood burning and multi-fuel stoves. Our team are committed to providing the highest quality stoves, at the best possible price.

We also have a firm focus on protecting the environment and ensuring our operations are sustainable and responsible.

We operate a policy of caring for the environment in all aspects of the business; from the products we design, to the way we package them, to the way we transport them, to the way we deal with the disposal of waste products, to the vehicles we use, to our choice of raw materials.

 

Get in touch now

If you have any questions about our wood burning stoves, please get in touch with a member of our team today.