New Furnace Savings Calculator
New Furnace Savings Calculator . A new furnace costs $2,000 to $5,400 on average to replace, depending on the system size and fuel type. Lennox ® air conditioners and heat pumps are leaders in efficiency, with seer ratings of up to 28.00. BTU Calculator for Heating from heattalk.com Today’s most efficient furnaces are rated 97 afue or even higher. A 32 percent savings comes to $384 every year. See how much you can save with energy star.