07-12-2008, 10:21 PM
Lennox 023Q34-105/120 oil furnace with heat pump. I have a 73 degree temperature rise while operating on oil. The manual says the rise should approximate what is shown in a chart in the manual and the furnace rating plate. Thing is, the manual says 65-75 is correct, but the label on the furnace states 60. What the hay?