The EPA just updated their list of certified stoves and now 66 stoves have verified, actual efficiencies using B415 and HHV. In the pellet stove category the Englander 25-SSP01 is nearly at the top, at 79% efficiency. What happened to that stove? Are they not selling it any more? I can't find it anywhere. Then, at the bottom of the pellet list is the Enviro EF2, coming in a 58%. There was some earlier thread about that stove not being very efficient. Their company website claims 87% efficiency. Even if factor in that they use LHV, 87% would not be more than 85% HHV. This means they are not using a weighted average, or not using B415, or both. We just updated our blog on stove efficiencies, listing the 66 stoves here: http://forgreenheat.blogspot.com/2013/05/a-review-of-wood-and-pellet-stove.html.
THere are only 13 pellet stoves with verified efficiencies on the EPA list, but it starting to show that the average, at 71%, is not living up the reputation that pellet stoves had for so long. Everyone used to say that pellet stoves were more efficient than wood stoves. But the opposite may be true, and I suspect it will take a few years for manufacturers to start paying more attention to their efficiencies and to improve them. The HHT brands seem to be one of the bigger hold outs in disclosing efficiencies. Jotul, Blaze King and Kuma and a few others took the lead in transparency. Hats off to them.
THere are only 13 pellet stoves with verified efficiencies on the EPA list, but it starting to show that the average, at 71%, is not living up the reputation that pellet stoves had for so long. Everyone used to say that pellet stoves were more efficient than wood stoves. But the opposite may be true, and I suspect it will take a few years for manufacturers to start paying more attention to their efficiencies and to improve them. The HHT brands seem to be one of the bigger hold outs in disclosing efficiencies. Jotul, Blaze King and Kuma and a few others took the lead in transparency. Hats off to them.
