Furnace replacement cost in Nashville, TN

How much does a furnace replacement cost in Nashville?

A furnace replacement in Nashville typically costs $4,550 for an 80,000 Btu gas furnace, installed on the ducts that are already there. The range for that same straightforward swap is $3,550 to $6,100. A 100,000 Btu gas furnace is typically $5,340. A ducted air-source heat pump, replacing the furnace and using those same ducts, is typically $9,110, from $7,110 to $12,210. None of those prices includes new ducts, a chimney liner, or a panel upgrade.

What the Nashville labor rate changes

The national starting point for the 80,000 Btu furnace is $4,600 before local labor. Nashville labor is 0.98 times a national crew. About 48 percent of that furnace price is the crew, so the city moves the hours more than the cabinet. Versus a crew priced at 1.00, that saves about $50. The heat pump uses a 45 percent labor share because more of its price is the machine. Do not compare a heat-pump quote with the furnace row and call the difference a rip-off. They are different machines.

Which size the example home is even asking about

The example house was built around 1984 and is about 1,850 square feet. ranches, new infill, and crawlspaces, humid summers Nashville has about 3,690 heating degree days, against 4,000 in the national reference. A colder city is the usual reason a quote jumps from 80,000 to 100,000 Btu. That jump is not proof you need it. An oversized furnace short-cycles: the air gets hot, the blower stops, and the house never feels even. This page will not run a Manual J. It will tell you to ask why the quote left the smaller furnace.

What pushes a Nashville quote into the high column

Same cabinet location, existing flue or vent that passes, existing gas line, filter door you can reach: that is the typical price of $4,550. The low price is that job with a clear basement or a garage and no code surprise. The high price, $6,100 for the smaller furnace, is a drain on the coil, a condensate pump, a flue that fails inspection, or a second trip. A liner for an old chimney, a move of the furnace to another room, or a duct replacement can honestly sit above the high number. Ask the quote to name those lines. Nashville's labor factor sits near national while rents have moved faster than trade prices. Crawlspaces and humidity are the building problem. A water heater in a crawlspace is not the garage swap this model prefers, so confirm location. Tornado and hail years create contractor shortages that a labor factor cannot see.

The bill after the Nashville install

Install price and the yearly bill are different sentences. At $1.50 a therm — the price you typed in the bar, not a Nashville gas tariff — a year of gas heat for the example home is about $1,230, roughly 819 therms. The same heat from a heat pump at 13.1¢ per kilowatt-hour is about $1,210 a year, about 9,232 kilowatt-hours. NES serves the city. The planning rate is under the national figure. A heat pump that costs $4,560 more to install does not pay for itself just because the brochure says so. Divide that gap by the yearly difference only if both numbers are for your house. This page will not invent a rebate.

If you rent in Nashville

A furnace and a ducted heat pump belong to the owner. The price does not change with the lease. Permission does. Use the range to read a landlord’s number. An “emergency” furnace that is several times $6,100 for a standard swap is a question about scope, not a reason to sign a contract on a building you do not own. Reviewed 2026-09-01. Planning model: IECC climate zone, degree-day normals, a metro labor factor, and a residential rate used only for operating-cost context. Installed costs start from published national ranges and scale the labor share. Rents are planning medians, not listings. Reviewed 2026-09-01.

Before you accept a furnace quote in Nashville, match it to one row. The 80,000 Btu gas furnace is typically $4,550 at labor 0.98. The heat pump is typically $9,110. If the quote is new ducts, say so out loud and stop using this table. The example home is about 1,850 square feet, built around 1984, in a 3,690 heating-degree-day climate.