Has anyone had to replace a furnace lately? Our gas furnace is 30 years old, and I'm afraid that will be where husband's bonus (if he gets it) will go this year. Whoopee! I'm interested in any stories you have to tell me about how to make the best choice. My house is about 2000 sf, we have a moderate climate, and a heat pump that needs to have it's drive belt and perhaps bearings replaced. We really only use the heat pump for AC in the summer. I was going to use it this winter, but then the grinding noise began... I had a guy out here this summer to work on the heat pump for something else (did he sabotage it?) and he tried to tell me it would be $10,000 to replace my gas furnace. Well, you know who we're not calling! It should be $2,500 - $3,500, I think. TIA!