HVAC estimator · Updated June 2026
HVAC Cost Estimator
Get a free HVAC cost estimate before calling a single contractor. Enter your home size, system type and US state to get an instant HVAC replacement cost estimate based on real 2026 contractor rates.
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Enter your home square footage above to get your instant HVAC cost estimate.
- Most 3-ton AC replacements cost $4,500–$8,000
- Heat pumps cost 15–25% more than AC-only units
- New ductwork adds $2,000–$6,000 to the total
- Labor rates vary up to 30% by state
HVAC cost factors
- Home size — Determines the tonnage needed. Oversizing wastes money; undersizing causes failure.
- System type — Heat pumps cost more upfront but save on energy bills long-term.
- Brand tier — Premium brands offer better efficiency ratings (SEER2) and longer warranties.
- Ductwork — Leaky or old ducts reduce system efficiency and must be addressed.
- State — Labor rates in California and New York run 25–30% higher than Midwest states.
- Season — Installing in spring or fall (off-peak) can save $300–$800 vs summer.
How much does HVAC replacement cost in 2026?
The average HVAC replacement cost in 2026 ranges from $3,800 to $12,000 for a standard central AC or heat pump system, fully installed. A complete HVAC system replacement including furnace and AC typically costs $6,000 to $18,000 depending on home size, brand and your US state.
Use our free HVAC cost estimator above to get an instant HVAC installation cost estimate for your specific home size and location. Our HVAC replacement cost calculator uses real 2026 contractor rates and adjusts for labor costs in all 50 states.
HVAC cost by home size (2026)
| Home Size | Tonnage | Central AC | Heat Pump | Furnace + AC |
|---|---|---|---|---|
| Under 1,000 sq ft | 1.5–2 ton | $3,200–$5,500 | $4,000–$6,800 | $5,500–$8,500 |
| 1,000–1,500 sq ft | 2–2.5 ton | $4,000–$6,500 | $5,000–$8,200 | $6,500–$10,500 |
| 1,500–2,000 sq ft | 2.5–3 ton | $4,500–$7,500 | $5,800–$9,500 | $7,500–$12,000 |
| 2,000–2,500 sq ft | 3–3.5 ton | $5,500–$9,000 | $7,000–$11,500 | $9,000–$14,500 |
| 2,500–3,500 sq ft | 3.5–5 ton | $6,500–$11,000 | $8,500–$14,000 | $11,000–$17,500 |
| 3,500+ sq ft | 5+ ton | $8,000–$14,000 | $10,000–$18,000 | $14,000–$22,000 |
HVAC replacement cost by system type
The type of HVAC system you choose is one of the biggest factors in your total HVAC installation cost estimate. Here is how the main system types compare:
| System Type | Average cost (3-ton) | Best for | Lifespan |
|---|---|---|---|
| Central AC only | $4,500–$7,500 | Mild climates with existing heat | 15–20 years |
| Heat pump | $5,500–$9,500 | Moderate climates, energy savings | 15–20 years |
| Gas furnace + AC | $7,500–$12,000 | Cold climates, reliable heating | 15–25 years |
| Mini-split ductless | $3,500–$7,000 | Additions, older homes, zone control | 20–25 years |
HVAC installation cost estimate — what’s included?
Our HVAC cost estimator calculates the main components of a full HVAC replacement:
- Equipment cost — The outdoor condenser unit, indoor air handler or furnace, and refrigerant.
- Labor and installation — Removal of old system, installation of new unit, electrical connections and system startup.
- Ductwork — Repair, sealing or full replacement if needed.
- Add-ons — Smart thermostat, air purifier, dehumidifier and permit fees if selected.
The estimate does not include structural modifications, gas line upgrades, electrical panel upgrades, or repairs to walls and ceilings after installation.
Frequently asked questions
How accurate is this HVAC cost estimator?
Our HVAC cost estimates are typically within 15–25% of actual contractor quotes. The estimate is most useful for initial budgeting before getting formal HVAC installation cost quotes. For a firm price, always get at least 3 quotes from licensed HVAC contractors in your area.
What size HVAC system do I need?
As a general rule, you need approximately 1 ton of cooling capacity for every 400–600 square feet of home, depending on your climate, insulation and home design. Our HVAC replacement cost calculator automatically estimates the correct tonnage for your home size.
How much does HVAC repair service cost?
HVAC repair service costs typically range from $150 to $600 for common repairs such as refrigerant recharge, capacitor replacement or contactor repair. Major repairs like compressor replacement can cost $1,200–$2,800. If your system is over 10 years old, replacement is often more cost-effective than major repairs.
Is it cheaper to repair or replace an HVAC system?
A common rule of thumb is the 5,000 rule: multiply the age of the system by the repair cost. If the result exceeds $5,000, replacement is usually the better investment. For example, a 12-year-old system needing a $500 repair = $6,000, suggesting replacement is the smarter choice.
How can I get a free HVAC cost estimate?
Our HVAC cost estimator above provides a free instant estimate based on your home size, system type and state. For a formal quote, contact 3 or more licensed HVAC contractors in your area. Many offer free in-home estimates.
Disclaimer: All HVAC cost estimates are for informational purposes only based on average 2026 US contractor and equipment costs. Actual costs will vary based on your specific home, local market conditions, chosen contractor and equipment availability. HomeEstimatorHub is not a licensed HVAC contractor. Always obtain multiple quotes from licensed, insured HVAC professionals before proceeding with any installation or replacement.