I currently have my fan controller set to 150 degrees fan on and 120 degrees fan off. I checked the temp of the air coming out of my floor registers and they were all basically the same...arounf 100 degrees. I was just thinking that if I increase the fan "on" setting to a higher temp and the fan "off" setting differential to the same 30 to 40 degrees, then the air out of the registers should be hotter...correct? And I shouldn't see any increase in pellet use because the furnace is kept form getting to a hotter temp by the fan coming on at a lower temp and keeping it from getting up to...say..165 degrees, which it would. The ESP keeps the exhaust temp from going above 165 when the thermostat is satisfied and it's maintaining, but I believe the heat exchanger is warmer than that. Not really sure of that one. I know I'm losing some heat in the transfer due to some of the duct not being insulated, which I'll get around to next year, but is my train of thinking correct with the fan controller set temps and the pellet use?