Probably another $300 over the winter. The price difference installing the higher efficiency would have been substantially higher though. I think the biggest difference was getting rid of that oil. He's still paying over $250 a month in utility costs for a 2.5 ton heat pump which is probably still a bit on the high side. Depending on where he lives. Hopefully for that price, somewhere cold and not Texas. I would focus on insulation and sealing the house up. I'll bet you can almost achieve the same results of a higher SEER unit by doing these things for probably 1/4 of the cost.
Originally Posted by Gunnery Sergeant Hartman
I like DIY'ers. They pay better to fix.