I recently had one guy showed up for duct cleaning. He was really smooth talking and said the heat exchanger was warped and so on. He left without cleaning duct and next day faxes me invoice for a brand new furnace and offer to clean the duct at cost if I replace the Rheem 75,000BTU 80% efficiency furnace (it's a rental property). I'm not sure if I can post the cost..
So, I find another online and he came out today. He sounded much better.
He will also replace the old Goodman 75K BTU 80% with new Rheem and throw in the furnace with lower price (I haven't gotten the written estimate yet).
My question is..
1. is Rhemm pretty good brand?
2. what would be an average total cost for the installation for everything including parts, labor, permit and etc? He said he will put in box at the bottom for ease of future duct cleaning as the current furnace sits in a closet right on the floor.
3. any other questions I should bring up?
4. there was no load test done and he is just replacing per current furnace size. is it too big or small for a 1,350sq ft rambler with newly replace energy efficient windows?
Any feedback would be greatly appreciated.