Furnace replacement cost in Miami, FL

How much does a furnace replacement cost in Miami?

A furnace replacement in Miami typically costs $4,690 for an 80,000 Btu gas furnace, installed on the ducts that are already there. The range for that same straightforward swap is $3,660 to $6,290. A 100,000 Btu gas furnace is typically $5,510. A ducted air-source heat pump, replacing the furnace and using those same ducts, is typically $9,380, from $7,310 to $12,570. None of those prices includes new ducts, a chimney liner, or a panel upgrade.

What the Miami labor rate changes

The national starting point for the 80,000 Btu furnace is $4,600 before local labor. Miami labor is 1.04 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 adds about $90. 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 1980 and is about 1,500 square feet. concrete low-rise and slab houses, salt air, flood elevation, almost no heating load Miami has about 150 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 Miami 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 $4,690. The low price is that job with a clear basement or a garage and no code surprise. The high price, $6,290 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. Miami has almost no heating degree days and a serious cooling and corrosion problem. Concrete construction and wind-code details change how line-sets and condensers are mounted. Labor is only slightly above national; the high column is a coastal install, a flooded mechanical room, or a condo board. Wellholt does not price a shutters package or a seawall.

The bill after the Miami install

Install price and the yearly bill are different sentences. At $1.50 a therm — the price you typed in the bar, not a Miami gas tariff — a year of gas heat for the example home is about $40, roughly 27 therms. The same heat from a heat pump at 15.4¢ per kilowatt-hour is about $50 a year, about 304 kilowatt-hours. FPL serves most of the county. Cooling is the entire energy story. Flood insurance is not in these ranges. A heat pump that costs $4,680 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 Miami

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 $6,290 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 Miami, match it to one row. The 80,000 Btu gas furnace is typically $4,690 at labor 1.04. The heat pump is typically $9,380. If the quote is new ducts, say so out loud and stop using this table. The example home is about 1,500 square feet, built around 1980, in a 150 heating-degree-day climate.