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Woodfire stoves > Woodfire Technical Stoves > Woodfire Passiv Boiler Stoves

Woodfire Passiv Boiler Stoves

Woodfire Passiv Boiler Stove

Woodfire Passiv Boiler Stove

The Woodfire Passiv represents the latest generation of highly efficient and cleanburning boiler stoves. The Passiv is the only boiler stove available in the UK to meet the stringent demands of EcoDesign. An astonishing 85.8% efficiency, to give you the most heat from your wood, combines with clean lined good looks and a large window to fill your room with firelight.

 This stove has been designed to give the majority of its heat to creating hot water, with just a small amount given to the room, which makes it perfect for low energy, well insulated houses. Passiv style dwellings require very little heating but still have a need for domestic hot water, and sometimes a heating top up in cold weather, and the Woodfire Passiv is made for that situation.

 Unlike most boiler stoves, the Passiv has been designed solely for burning wood. Traditional boiler stoves put the boiler around the firebox and collect the heat that way. This works OK for coal burning but isn’t efficient for wood. Most of the heat from wood is generated just above the fire, where the gases are burning, and that is why the Passiv has tubular heat exchangers running across the top of the firebox. That also allows the firebox to incorporate vermiculite firebricks, resulting in a hotter, cleaner and more controllable burn.

 With an insulated firebox, primary secondary and tertiary air control and an adjustable flue damper, this is a stove built to be worked hard, and be fully controllable, in any situation.

Woodfire Passiv with log store stand

the Woodfire Passiv Boiler Stove is Ecodesign Ready

Stoves like the Woodfire Passiv Boiler Stove will typically burn 90% cleaner than an open fire. They are also a pleasure to use, way more efficient and do not suck huge amounts of cold air through your home.

Advanced modern stoves are part of the solution to improving our air quality.

We think its also time to Ban open fires in cities.

HEIGHT813 MM
WIDTH700 MM
DEPTH486 MM
ECODESIGN READYYes
FLUE DIAMETER150 MM
NOMINAL HEAT OUTPUT10 kW
NOMINAL OUTPUT TO WATER7 kW
NOMINAL OUTPUT TO ROOM 3 kW
BACK OF STOVE TO CENTRE OF TOP FLUE185 MM
FLUE OUTLETTop only
DIRECT AIR SUPPLYYes - 100mm
CAN HAVE 12MM HEARTHNo, needs full constructional hearth
FUELWood
EFFICIENCY85.8 %
MINIMUM OUTPUT TO WATER2.5 kW
MINIMUM OUTPUT TO ROOM1.0 kW


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Optional Extras
Passive Log Store Stand£390.00

Woodfire PassiveAn installation at a customer's home.

A previous client sent us in a photo and some details of their installation. You can read about it on our installations page:

Woodfire Passiv installed with a custom made steel stand. installation


If the window of your stove is becoming blackened then this may be a sign that you are burning it too slowly. Try turning the air control up until you see a good flame pattern - when the stove is hot and the wood all burning you should not really see smoke in the firebox if you are running the stove efficiently


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