So i have been thinking about replacing my avalon arbor pellet stove which has a BTU output of 45,000 with a new E2. Problem is after reading the owners manual it states that the max output is 37,500 btu's with an input of 51,250 btu's. Am i wasting my time looking at the new E2 to replace my stove? The manchester heritage has a 51,000 but output which is more than the E2. I am currently heating 18000 square feet open floor plan in upstate NY. The avalon arbor does very well heating my home just want to get an updated stove. I use just under 3 tons a year. Any thoughts on this new E2? I have seen it in person and it function just don't understand why a heat output of 37,500 Btu's.