Author: Adam Futer

The warmth you get from a wood burning stove is like no other, it truly is the epitome of comfort. But how do you get heat from your wood burning stove to fill your whole house and not just the one room? This article talks you through some of the most popular options…

 

Are you getting the best from your stove?

You want to be sure your wood burning stove is giving you its best and there are ways you can help it along. Keeping your stove and flue clean and maintained will help your system run efficiently, so be sure to sweep away any debris and excess ash (a couple of centimetres is fine), and you need to have your chimney swept at least once a year.

Be sure to use properly dried and seasoned wood (less than 20% moisture) and, when starting your fire, start with a bed of kindling, ensuring it is glowing hot before adding some small logs and then, later, a full load of wood. Take care not to overfill your stove as this can cause dangerously high temperatures and can cause damage to your stove. The inside of your stove should be between 260°C and 460°C.

You’ll also want to circulate the heat your wood burning stove produces, which we’ll cover in more detail a little later in this article.

 

How much heat does a wood burning stove produce?

The heat from wood burning stoves is measured in kWh (kiloWatt hours) or BTUs (British Thermal Units), where 1kWh equals approximately 3,400 BTUs.

Wood burning stoves are often displayed with two heat output figures; the maximum heat output and the nominal heat output. The former is quite simply the maximum heat output you can achieve with that wood burning stove, while nominal output is the level of heat you can get out of it while running the wood burning stove as its efficiency rating.

Wood stoves can put out up to around 15kW (51,000 BTUs) of heat with their air vents wide open (assuming it is a 3 or 4-cubic-foot firebox and is well-stocked and running efficiently), while this can drop to around 4kW (14,000 BTUs) if the vents are closed and the wood smoulders rather than burns. How well your wood burning stove heats your room (or your house) will depend on your room size, house size and layout, and stove size and efficiency, although there are ways to improve how the heat warms your home.

 

Best tips for spreading heat from a wood burning stove around your home

There are a number of ways you can help spread the heat from your wood burner so it reaches more of your home. We discuss some of the best ways below.

 

Using a fan to circulate heat

Heat rises, pure and simple. It’s one of those immutable laws of the universe, but that doesn’t mean you can’t move it around. A fan sits on top of your wood burning stove and the heat from your stove will cause the fan to spin (no need to plug anything in!) and subsequently move the heat around the room. Because the fan helps the heat reach parts of your room more quickly, you can use less wood than you previously may have done to generate the same amount of heat, saving you money.

The best place to put your fan is on one of the back corners of the stove as the front of the fan will get the full effect of the heat from underneath while the back of the fan will be cooler; the heat difference will help move your fan blades more quickly and spread your stove heat further.

 

Directing heat to where it is needed

As we’ve already mentioned, heat rises, and you can use that to your advantage. Having your wood burning stove installed on the ground floor of your home means the heat will rise to the higher storey(s) in your house, warming your bedrooms.

You can help the heat get into your upstairs room by installing vents in the ceiling of the room where the stove is, and vents in the rooms you want to benefit from the stove’s heat.

You should consult a professional when adding vents to your home; this helps maximise the efficiency of the venting system and also helps you steer clear of any potential safety hazards.

 

Adding duct for wood stove heat distribution

Having proper ducting installed from your wood stove to other parts of your house pulls cold air from those far-reaching rooms towards the stove, causing the stove to release warm air. This means the heat from the wood burner isn’t wasted on heating up the duct but instead uses the natural flow of hot and cold air to help warm the rooms further out from the stove.

 

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. If you have any questions about heating your home with a wood burning stove, please get in touch

Eucalyptus trees, also known as gum trees, are fast-growing trees whose wood produces a lot of heat, making them an ideal sustainable choice for your wood burning stove. While not native to the UK, some eucalyptus species have been able to thrive on these western European islands, giving us access to this superfuel.

 

Benefits and Disadvantages of Using Eucalyptus

Benefits

It produces a high heat output – 34.5 million BTUs (British Thermal Units) per cord; for context, oak produces 24 million BTUs.

Eucalyptus grows quickly, only taking a few years to mature, making it one of the more sustainable firewoods and it doesn’t taper much over lengths.

It’s also cheaper than other traditional hardwoods.

 

Disadvantages

Eucalyptus trees aren’t native to the UK, and, because of their numbers in this part of the world, eucalyptus wood is rarer than other woods.

Its high oil content can lead to a build-up of creosote, but otherwise, it burns clean.

It’s also a very hard wood to split – more on this in a later section.

 

Types of Eucalyptus

There are over 700 different species of the eucalyptus tree and they are mostly found in Australia, although some are also found in areas like the Philippines, Indonesia and New Guinea. Some have been successfully introduced to grow in Britain (see above).

Of the 700 different species, only 35 (5%) are suited to growing in the UK. Two of note are the cider gum and Tasmanian blue gum trees, which grow quite happily on the Essex coast and in Cornwall, respectively.

The best eucalyptus trees for firewood that can grow in the UK are eucalyptus nitens (Shining Gum) and eucalyptus viminalis (White Gum).

 

Is Burning Eucalyptus Poisonous?

If you were to eat (great swathes of) eucalyptus leaves, you may become unwell, however, the smoke of eucalyptus wood is not toxic.

 

Is Burning Eucalyptus Bad for the Chimney?

If eucalyptus wood is properly seasoned, the wood is not bad for the chimney. Eucalyptus wood has a naturally high oil content and this may be considered dangerous, however, seasoning the eucalyptus removes much of this oil and, consequently, the risk.

You should have your chimney cleaned every year as a minimum, regardless of which wood you use. This is to remove soot, cobwebs, bird nests, other blockages and creosote to allow for the safe passage of smoke and to prevent chimney fires.

 

Does the Wood Split Easily?

No. Eucalyptus wood is notoriously difficult to split. If you can buy it pre-split, it’ll save you a lot of effort.

If you want to split the wood yourself, you are best to leave it for 5-7 days after it’s been cut, and before you season it. Just before it reaches the week mark, cracks will start to form in the wood; this is the best time to start splitting the wood.

 

Heat Output and Efficiency of Eucalyptus

As mentioned above, eucalyptus packs a punch in the heat department: it produces 34.5 million BTUs and has a very strong flame.

Eucalyptus wood also produces good coals, keeping your home warm for longer after the fire itself is out.

Some worry that burning eucalyptus wood produces too much heat, so you can mix eucalyptus wood with other woods if you are concerned about excess heat.

 

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 the best woods to use in them. If you have any questions about heating your home with a wood burning stove, please get in touch.