Now now we can't boot someone for being misinformed! As he said we can't talk about BTU's because we have to leave it to the pro's right? He said he's been a pro for 21 years.
Well, I was a pro for 27 years before becoming a Pastor. I also taught heating and A/C as well as thermodynamics and Boyles Gas law and such to name just a few topics. A BTU is a measurement of heat energy contained in a fuel or heat source and you can't get more out of a heating device than what is contained in the substance your going to use whether it's wood, geothermal, coal, LP Gas, Nat Gas, Butane, Propane, Methane, Solar, or nuclear. BTU's are generated by utilizing a fuel source in a manner to release said BTU's to the environment. The trick is to utilize them in the most efficient manner once you figure out how to unlock them.
These guys are stuck on a device when the discussion point is in the BTU's available in the fuel source. If one gallon of oil has x number of BTU's your not going to get more BTU's out than the fuel source contains. If one pound of pellets has y BTU's available your not going to get more BTU's out than the pellets contain. They are using the classic misdirection ploy here.