Alliance for Environmentally friendly Warmth, January 7, 2013 – Each situation of Mother Earth News, a journal that caters to the granola, Birkenstock and organic vegetable group, also carries numerous adverts from outside and indoor biomass boiler firms. The Alliance for Eco-friendly Heat has regularly place the spotlight on outlandish promises by numerous manufacturers. This month we characteristic Kuuma who is advertising “ninety nine.4% comb. effectiveness” wood burning furnace “analyzed by EPA Licensed Lab-Intertek Tests.” The December/January problem of the magazine also has an half-website page ad from Central Boiler stating that their E-Basic “calls for up to 70% much less wood than other wood-burning appliances.”
Exaggerated efficiency promises have turn into virtually commonplace in the boiler and stove sector, taking advantage of shoppers who don’t know that there is no typically approved way to publicize performance any far more. 1 rule of thumb: Beware of any equipment declaring 99% efficiency. Any assert of effectiveness in the higher 90s is most likely combustion effectiveness, not thermal effectiveness – the quantity of valuable heat developed by the device.  Combustion efficiency has no bearing on the beneficial heat a unit generates which is why almost all stoves, boilers and furnaces companies advertise thermal efficiency.  The most productive wood stove, employing EPA approved efficiency regular is 82%, and the most efficient boilers making use of that same common are probably below 90%.
We at the Alliance for Green Warmth applaud Mom Earth News for constantly great editorial protection of wood heating, partly thanks to their contributing editor John Gulland, and we comprehend that they aren’t responsible for promises produced by advertisers. (We also enjoy granola, organic and natural greens, property-baked bread, and so forth. Birkenstock – not so much.)
Update: See the comments area below for a reaction from a Kuuma consultant.  Kuuma has a bit transformed their advert to say “combustion” instead of “comb.” which buyers could believe indicates combined efficiency.   Kuuma is nevertheless 1 of the only boiler or furnace manufacturers who advertises their combustion effectiveness which many buyers confuse with thermal efficiency.