I need to get a multi fuel stove to heat 29 radiators (I Know!) anyone know of one that is suitable, maybe even one that qualifies under clean air act? All advice welcome!
Hello again,
I've used multifuel stoves for central heating for over 25 years - my first was a second hand Franco Belge cooker / boiler, but it leaked after only a few years, so I replaced it with an almost new Bosky 90 cooker / boiler. This ran 15 radiators easily (90,000 btu/hr), but eventually the boiler leaked so we replaced it. It was manufactured in 1984 & lasted until 2008, which I believe is a typical life.
Since we were short of money in 2008, I replaced the Bosky with a cheaper stove, a Hunter Herald 14 woodstove. On paper, this has an output of 14 kW (there are 3,300 btus in 1 kW), but we were cold in the winter in spite of an unlimited supply of logs, so this year we replaced it with another new Bosky 30. This has an output of 30 kW and this time we didn't bother with the cooker option (very expensive for what it is). Tonight, the outside temperature is -8 degrees C (middle of Scotland on Hogmanay evening) and the internal temperature is 23 degrees, burning wood. The Bosky is a kitchen boiler. with a hotplate you can cook on.
I also have a Villager room heater (multi fuel) in my living room, and a Jotul box stove in my office. Neither are lit at the moment, although if I was in my office it would benefit from extra heat.
Be careful with roomheater woodstoves - many are intended for intermittent use only & cannot maintain full output 24 hours a day.
A Bosky stove is not cheap (2,700 ukp, plus fitting) but I hope this one will last until we're too old to pick up wood (ie, in our middle eighties!). You can get equivalent or larger woodburning boilers from other suppliers, but very few are intended for installation inside a kitchen, and we don't have suitable boilerhouse facilities.
My chimney is a Selkirk twin walled stainless steel flue, going straight up from the stove through the roof. The stove also has to mounted on a solid hearth, but my kitchen floor is concrete so no problems (it's
very heavy!).
I use a tractor mounted hydraulic log splitter to do the splitting, and an old Landrover for haulage - you need a vast amount of wood for continuous heating.
John