HVAC Replacement Cost Calculator
Build a planning estimate for replacing a central heating and cooling system. Choose system type and home size, then refine with your local labor market before you book installations.
Estimated HVAC replacement cost
Enter your project details and calculate to see a planning estimate.
This is a planning estimate, not a contractor quote. Actual costs vary by location, home condition, material availability, permits, and project complexity.
Planning rates for cost year 2026 (national baselines × state regional factors). Not a contractor quote.
Main cost factors
System type
AC-only, furnace-only, combined systems, and heat pumps have different equipment and install profiles.
Home size / tonnage
Larger cooling and heating loads need more capacity and often more labor to install.
Efficiency and accessories
Variable-speed equipment, zoning, and new thermostats raise installed cost while improving comfort.
Cost table
| Item | Low | Typical | High |
|---|---|---|---|
| Central AC replacement | $4,000 | $7,000 | $11,000 |
| Furnace + AC | $7,000 | $11,000 | $16,000 |
| Heat pump system | $6,500 | $12,000 | $18,000 |
National average explanation
Across the U.S., many full HVAC replacements cost $5,000–$15,000 in 2026. The calculator scales that national band by system choice and regional labor differences.
Browse more in Heating & Cooling.
Related cost guides
Related resources
- Category hub
- AC Repair
- Furnace Replacement
- Heat Pump Installation
- HVAC Replacement calculator
- AC Repair calculator
- Furnace Replacement calculator
- Heat Pump Installation calculator
- AC Not Cooling
- Furnace Not Heating
- AC Repair vs Replacement
- Furnace Repair vs Replacement
- Heat Pump vs Furnace
- HVAC Replacement cost guide
- HVAC Maintenance
- AC Not Cooling Checklist: Filters, Thermostats, and Repair Triggers
- Furnace Not Heating Checklist: Thermostat, Filters, and Safety Stops
- HVAC Maintenance Checklist: Filters, Coils, and Seasonal Tun-Ups
- Gas Furnace
- Central Air Conditioner
- Air-Source Heat Pump
- Compare repair vs replace
- Common home problems
- Maintenance cost guides
- Home cost blog
- State cost factors
- National cost bands
Frequently asked questions
Methodology & estimate disclaimer
Production model: base equipment × capacity (home size) × efficiency × ductwork × zoning × complexity × region.
Actual costs vary by location, home condition, material availability, permits, and project complexity. Read our methodology, the national cost bands table, editorial policy, and disclaimer. Planning provenance uses internal model notes (not invented third-party citations)—see the bands page for published low/typical/high frames.
Planning sources
- Home Cost Atlas national planning model v1 — Modeled national planning ranges used for cost guides and seed CostRecords. Values are planning estimates synthesized for budgeting context, not observed contractor invoices or bid samples.
- Home Cost Atlas planning baselines v1 — Internal baseline spreads (low / typical / high) by project category. Intended for calculator scaffolds and aggregation fallbacks; not a dataset of paid jobs.
Cost year: 2026 rate book · Data version: hca-national-model-v1 · Last reviewed: July 25, 2026