Getting your first HVAC replacement quote can be a shock. One contractor says $7,800. Another says $14,500 for what sounds like the same thing. So how much does a new HVAC system cost, really?
For a typical American home, a full replacement of a central air conditioner and gas furnace usually lands between $8,000 and $15,000 installed in 2026. Heat pumps, ductwork replacement and high efficiency equipment can push that well past $20,000. Below is a full breakdown so you can tell a fair quote from an inflated one.
New HVAC System Cost by Type
| System Type | Typical Installed Cost (2026) | Good Fit For |
|---|---|---|
| Central AC only (replace outdoor unit and coil) | $5,000 to $9,500 | Homes with a working furnace |
| Gas furnace only | $3,500 to $8,000 | Cold climates with a newer AC |
| AC plus gas furnace (full split system) | $8,000 to $15,000 | Most homes with ducts and gas |
| Heat pump plus air handler | $7,000 to $16,000 | Mild climates, all electric homes |
| Cold climate heat pump | $10,000 to $20,000 | Northern states wanting electric heat |
| Dual fuel (heat pump plus gas furnace) | $10,000 to $18,000 | Cold winters, high gas or power prices |
| Ductless mini split, single zone | $3,000 to $5,500 | Additions, garages, single rooms |
| Ductless mini split, 3 to 4 zones | $9,000 to $18,000 | Older homes without ducts |
| Geothermal heat pump | $18,000 to $35,000+ | Long term owners with land |
These are typical market ranges for standard installs. Your local prices depend on labor rates, permits and the condition of your home, so always compare written quotes.
Cost by Home Size
Bigger homes usually need more cooling capacity, measured in tons. One ton equals 12,000 BTUs per hour.
| Home Size | Typical AC Size | AC + Furnace Price Range |
|---|---|---|
| Under 1,200 sq ft | 1.5 to 2 tons | $7,000 to $11,000 |
| 1,200 to 1,800 sq ft | 2 to 3 tons | $8,000 to $13,000 |
| 1,800 to 2,500 sq ft | 3 to 4 tons | $9,500 to $15,000 |
| 2,500 to 3,500 sq ft | 4 to 5 tons, or two systems | $12,000 to $22,000 |
Square footage is only a starting point. A proper load calculation looks at insulation, windows, ceiling height and climate. Two 2,000 square foot homes, one in Phoenix and one in Seattle, can need very different equipment.
What Drives the Price Up or Down
Efficiency Rating
Higher efficiency costs more upfront but less to run. Since 2023, federal rules from the U.S. Department of Energy require new split system ACs to be at least 13.4 SEER2 in the North and 14.3 SEER2 in the Southeast and Southwest for most home sizes. Stepping up from a base model to a 17 or 18 SEER2 variable speed unit can add $2,000 to $5,000.
Single Stage vs. Two Stage vs. Variable Speed
Single stage units run full blast or off. Two stage and variable speed units run at lower speeds most of the time. They’re quieter, more comfortable and better at removing humidity, but they cost more.
Ductwork
If your ducts are leaky, crushed or undersized, fixing them can add $1,500 to $8,000. Full duct replacement in a large home can run higher.
Electrical and Venting Work
Switching from gas to a heat pump may need a new electrical circuit or panel upgrade, which can add $500 to $4,000. High efficiency gas furnaces need PVC venting and a condensate drain.
Location and Access
An attic install in a 140°F Texas attic or a tight crawlspace takes longer, and labor reflects that. Labor rates are also higher in big metro areas.
Brand
Premium brands cost more, but installation quality matters far more than the logo. A great installer with a mid range brand usually beats a sloppy installer with a top brand.
What a Fair Quote Should Include
- Model numbers for every piece of equipment
- SEER2, HSPF2 or AFUE efficiency ratings
- Removal and disposal of old equipment
- New refrigerant line set or line set flush
- New thermostat, if included
- Permit and inspection fees
- Labor warranty length, not just manufacturer warranty
- A load calculation or at least how the size was chosen
Real Example: Comparing Two Quotes
Say you live in a 2,000 square foot home outside Atlanta. You get two quotes:
- Quote A, $9,400: 3 ton 14.3 SEER2 single stage AC, 80% AFUE furnace, 1 year labor warranty, no permit listed.
- Quote B, $11,900: 3 ton 16 SEER2 two stage AC, 96% AFUE furnace, 10 year labor warranty, permit included, duct sealing at main joints.
Quote B costs $2,500 more, but it includes a permit, better efficiency, duct sealing and nine extra years of labor coverage. Over 15 years, lower energy bills alone may cover much of that gap. The cheaper quote isn’t always the better deal.
Long Term Savings Matter
According to the ENERGY STAR cooling fact sheet, replacing a central AC that’s over 12 years old with an ENERGY STAR model could cut cooling costs by about 30%. On a $1,400 yearly cooling bill, that’s about $420 a year, or $6,300 over 15 years.
Ways to Lower the Cost
- Get at least three written, itemized quotes.
- Replace in spring or fall, when contractors have more flexibility.
- Check your utility company for rebates on efficient equipment.
- Look for manufacturer promotions, which often run in spring and fall.
- Ask about financing with 0% promotional periods, and read the terms carefully.
- Don’t oversize. A properly sized system costs less to buy and run.
Bottom Line
How much does a new HVAC system cost? Most homeowners pay $8,000 to $15,000 for a standard AC and furnace replacement, with heat pumps and premium systems running higher. Compare itemized quotes, ask about efficiency and warranties, and remember that installation quality matters as much as price.
Frequently Asked Questions
How much is a new HVAC system for a 2,000 sq ft house?
A new AC and furnace for a 2,000 square foot home typically costs about $9,500 to $15,000 installed, depending on efficiency and location.
Is it cheaper to replace AC and furnace together?
Usually, yes. Replacing both at once saves on labor and makes sure the indoor and outdoor parts are properly matched.
How much does a heat pump cost to install?
Most heat pump systems cost $7,000 to $16,000 installed. Cold climate models and complex installs can cost $20,000 or more.
Why are HVAC quotes so different?
Quotes vary by equipment efficiency, brand, ductwork, permits, warranty length and labor rates. Always compare itemized quotes.
Does a new HVAC system add home value?
It can help a home sell faster and avoids buyer price cuts, but you rarely get the full cost back in resale value.
When is the best time to buy a new HVAC system?
Spring and fall are usually best. Contractors are less busy, so you get more scheduling flexibility and room to compare quotes.
