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    Woodburning advice

    Wood or Multi-fuel

    The multi-fuel part simply means that the stove can also burn solid fuel like coke, smokeless briquettes, anthracite or coal. If it is multi-fuel then it will have a grate and typically a riddling mechanism (a way of shaking the ash and embers into the ash pan below the grate). You can often buy a multi-fuel ‘kit’ for a standard wood burner thus converting it into a multi-fuel stove. If you are going to burn solid fuel then you must understand that it is quite different to wood in the way that it burns.

    Our stoves pages contain models that are either wood burning only or multi-fuel. If you are unsure which model you might need please get in touch with us to discuss your requirements.

    Burning Wood

    Wood burns best when the air supply is provide from on top of the wood, usually by a pre-heated mechanism. This air supply is usually called the secondary air supply on modern wood burners. The primary or underneath air supply should be closed apart from when first lighting the fire.

    Embers

    If the stove has a grate then this should be shut to stop embers falling into the ash pan. The embers or coals are an integral part of the wood burning process and should be allowed to build up underneath partially burnt wood.

    Re-fueling

    New wood should then be layered on top and a good burst of air provided to properly ignite this new fuel, this might be for 15 minutes or so. Once the new wood is burning well, the air supply can be reduced but not so much that the flames disappear – always have some flames within the firebox. This is what tells you that the combustion gases are being burnt off. Ideally, the firebox should be completely loaded with wood each time you re-fuel.

    Charcoal

    Then over time, the middle to bottom layer of this sandwich will slowly turn to charcoal because the air supply to the underneath of the fuel is limited by the new wood. The top layer of wood will burn down slowly (because the air inlet is partially closed) and when this wood has turned to glowing coals, new wood can be placed on top. Since charcoal needs less air to burn than fresh wood, a fire containing charcoal as a base allows the combustion process to slow down and helps to stabilise the cycles of burning and re-fueling.

    Slow or fast

    The loading and laying of wood inside your wood burner permits different types of fires, from quick fast fires to long slow burn ones but remember, never let the fire smoulder as this is wasting a lot of wood energy in the form of smoke and this is what will coat your chimney with creosote and tar. If you want a longer burning fire then stack the wood tightly inside the firebox, if you want a faster fire then stack the wood with larger air spaces between the logs.

    Keep the ash

    Modern wood burners are surprisingly efficient to new owners, especially if they are used to burning solid fuel on an open fire. They produce very little ash compared to solid fuel such as coal or smokeless briquettes. The ash underneath the embers provides a insulating bed for the heat of the embers and should not be removed between fires. Ideally there should be a bed of about 1 inch or so of ash. If you have a multi-fuel stove that you mostly burn wood on but your grate cannot be closed then try to block the grate by compressing the ash using a piece of wood or even adding a piece of fire brick to block the slats. This will stop embers from falling through during the wood burning process.

    Burning Solid Fuel

    Solid fuel prefers to have a stream of cold air coming from underneath the fire and directly into it. This airflow is often referred to as the primary airflow in a stove and usually is controlled by a slider or opening near the ash pit on the front of the stove. Solid fuel is best burnt in a narrow firebox so that the solid fuel briquettes can build up on top of each other. Ash and embers should be riddled regularly, allowing the cool air to enter so that grate bars do not overheat. Be warned that solid fuel can burn a lot hotter than wood and if you over-air the fuel there is a chance you will warp parts of the stove. Once there is a nice bed of glowing solid fuel, air flow should be restricted so that the gases in the heart of the stove transmit maximum heat to the body of the stove rather can escaping too quickly up the chimney. The secondary air supply should be closed for burning solid fuel, apart from perhaps a trickle to keep the flue gases moving if the primary air supply if closed down (overnight burning for example).

    Tip

    Use a stove thermometer to learn about how your stove warms up (and cools down!). Learn to manage fuel better by understanding your stove’s burning cycle. All wood burners are different and it takes a bit of time to get to grips with them so don’t be put off. We think part of the fun of wood burners is learning how they react to different types of wood and properly managing refuelling. If you think you are getting through too much fuel it may be your technique. Review the information above on wood fuel.

    Mind the air

    One of the common reasons why people use too much wood is that they leave the secondary air supply open too long or perhaps don’t refuel with enough wood. This over-supply of oxygen to the wood causes it to burn vigorously and give an intense blast of heat but it also carries a lot of the hot gases out of the stove and up the chimney. The wood will burn down quickly and the stove will require refuelling more often. By reducing the air supply, the wood can be allowed to turn to charcoal (see above), this uses less air to burn and the stove will reach its optimum temperature. Our friends are often surprised at how hot our wood burner at home gets even though there isn’t a roaring furnace inside!

    If you have a stove that is running too fast, especially in  high winds, try using fully round logs and pack them tightly into the firebox. This will help your stove to burn slower, however in very strong winds all woodburners can burn more vigorously than normal.  In extreme cases, an anti-downdraught cowl can help.

    • Woodburning advice
    • Environment
    • Wood fuel and your woodburner
    • Frequently asked questions
    • Useful links
    • Internet sales policy

    Testimonials

    Since having the lovely new stove fitted in the dining room it has become the heart of our house. We light the fire rather than turning on the central heating – much nicer!
    R Rose Montpelier, Bristol
    Stovax Stockon 7
    Thank you for a fantastic job. Our new wood burner looks great and makes our front room so warm and cosy. Very knowledgeable, very accommodating and professional work.
    M & S Parry St Andrews, Bristol BS6
    Stovax Stockton 5
    A really refreshing experience to have a chilled out friendly chap round who genuinely cares about his work and is driven by making sustainable heating as accessible to as many people as possible rather than motivated by money. We were more than happy to leave Will and Stuart with the keys to our house while we went to work and have already recommended them to two of our friends.
    E Chapman Easton, Bristol
    Morsø 1412 Squirrel
    We just wanted to say a really huge THANK YOU to you and your team. The wood burner looks fantastic and we can’t wait to start using it. The guys who worked at the house were brilliant. Friendly, tidy and professional. We were given a thorough explanation before they left too.
    G Williams Filton, Bristol
    Cleanburn Lovenholm
    Will and Ian installed our wood burning stove at the beginning of February 2017, we are so very very pleased and impressed with their service. Both were very professional, polite, cheerful and friendly. Thank you so much.
    K Barrymore Bristol
    wood burning stove installation
    Will and his guys were amazing to deal with from start to finish. Super professional, super-efficient and really kind all at the same time. The burner itself looks fantastic and works perfectly. All in all, I recommend that you have Heart put a Heart in your home!
    Tristan Hogg Pieminister
    Charnwood Island I
    What a difference the service has made to our wood burner. It is definitely producing more heat and looks great now. Thanks for a good job.
    Dan Montpelier, Bristol
    Wood burning stove service
    We are really pleased with the fireplace – came out just like the brochure! Heart are highly recommended.
    L Faiello St Andrews
    Chesneys Beaumont and Chesneys Marble Surround
    Using a HETAS engineer to install your woodburning stove means that you are using a competent person who has undergone training and certification in the safe installation of flue systems and solid fuel appliances.
    HETASInstallers
    Thanks for being able to fit the stove before Christmas. Perfect timing! Stove and hearth were fitted with care. Very friendly, wood burner looks amazing and so efficient.
    D Boari St Andrews, Bristol
    Clearview Solution 400

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