Gas furnace replacement costs

7 Replies

What is a reasonable price for a gas furnace replacement, including installation? 1200 sf house.


It can vary quite a bit. I paid $1500 each for two units last fall, plus another $200 on one for some code related upgrades for combustion air.

For a 1,200 sq ft house I recently paid $900 for a furnace and installation this price did not include any alterations to gas lines or duct work.

Area to area varies a lot. As does the difficulty of the job. You might be in an area that uses union installers which cost more or an area using low paid guys which obviously don't. It also will depend on the type of furnace you put in, which could be based upon codes in an area. Average price between $1000-$2000.

About $1425.

I am paying $750 for 80% goodman 40k BTU and $875 for 60k BTU. The later is what you would need for that amount of space.

These prices include sheet metal fab for trunk if necessary.

You guys and gals are very lucky.

Prices are much higher in the northeast. I paid $3400 last year to replace the furnace of 1 apartment in a 2 family in CT. The quote was initially over $4k, then the contractor suggested going with a brand which was not one of the major brands. The other two quotes I received were over $5k.

I got lucky with the 2nd furnace because I signed up and paid for a service contract through the gas company ( cost $250) so they pretty much rebuilt the furnace for free when it wouldnt start.

I charge anywhere from $1500-3000. Equipment is the biggest factor. Furnaces range from $400-2000 depending on efficiency, upgrades, brand etc

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