Installing a complete heating and cooling system — or a new system in a home that never had one — is a one- to three-day job. Price depends on the equipment, the ductwork, and the electrical.
A full HVAC installation sets a matched heating and cooling system sized to your home, connects the refrigerant, gas, and electrical, ties into or builds the ductwork, sets the thermostat, and commissions everything. A new installation in a home without existing equipment adds ductwork, electrical, and a condensate system from scratch, so it runs higher than a like-for-like replacement.
The single biggest cost variables are the equipment efficiency you choose and the condition of your ductwork.
A furnace + AC, an all-electric heat pump, or a ductless system — each has a different equipment and labor cost.
Standard, high-efficiency, or premium variable-speed equipment. Higher tiers cost 20–55% more.
Good existing ducts add nothing; sealing or resizing adds $1,500–$4,000; a full new duct system adds $4,000–$8,000.
A new circuit is minor; a panel upgrade for a heat pump plus backup heat adds $1,500–$3,000.
Larger homes need bigger equipment; multi-story homes need longer runs and more labor.
A permit, load calculation, weighed refrigerant charge, and startup test should all be included.
Installed ranges for a typical single-family home. Tailor it with the HVAC Cost Estimator.
| Scenario | Typical range |
|---|---|
| Full system (AC + gas furnace), like-for-like | $8,000 – $16,000 |
| Ducted heat pump system | $10,000 – $18,000 |
| Ductless multi-zone system | $8,000 – $20,000 |
| New installation with new ductwork | $12,000 – $25,000+ |
| Geothermal system | $18,000 – $45,000 |
| Panel upgrade (if needed) | +$1,500 – $3,000 |
A like-for-like full-system replacement takes one to two days. A new installation with ductwork can take two to four. A typical job includes:
Get at least two itemized written quotes. A price far below the others usually leaves out a permit, a load calculation, a new line set, or commissioning.
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A like-for-like full-system replacement (AC + gas furnace) typically runs $8,000–$16,000 installed. A ducted heat pump runs $10,000–$18,000, and a new installation with ductwork can run $12,000–$25,000 or more. Estimate yours with the HVAC Cost Estimator.
A like-for-like full-system replacement is one to two days. A new installation that includes ductwork can take two to four days.
New or resized ductwork, an electrical panel upgrade, difficult attic or crawlspace access, refrigerant line replacement, zoning, permits, and peak-season scheduling.
In many climates a heat pump replaces both your furnace and AC with one efficient system and may qualify for a larger tax credit. Compare lifetime cost with the Heat Pump vs. Furnace + AC calculator.
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