I had four estimates done on a furnace replacement and I think I finally decided on the company. My question is three of the companies suggested an 80,000 btu furnace and the company I want recommends a 60,000 btu trane furnace, (he did a heat/loss on the home). He said he could put in a 80,000 for the same price as the other companies, but thinks its a mistake. His calculations show I need 58,000 btu. He said he is so positive that it is the right size that he will write it in the contract that they will replace the furnace free if it doesn't adequately heat the home.
The home is 1400 square foot with very good insulation. I feel more comfortable with the larger size furnace, but wondering if there is any negatives to oversizing it to 80,000. He would give me a free upgrade to the 80,000 to match the price of the other companies.