HVAC Replacement — Cost Guide
What it costs to replace a central heating and air conditioning system.
Overview
A full HVAC replacement swaps out your furnace and/or air conditioner (and often the ductwork connections) with a new, properly sized system.
Most homeowners replace both the furnace and AC condenser at the same time since they're designed to work together and tend to wear out around the same age.
What affects the cost
- System size (tonnage) and home square footage
- SEER/efficiency rating of the new unit
- Furnace fuel type (gas vs electric)
- Ductwork condition and modifications needed
- Brand and warranty coverage
- Removal and disposal of the old system
Labor vs. material costs
Labor
Labor typically runs $1,500–$3,500 and includes removal of the old system, installation, electrical hookups, and startup testing. Complex duct modifications add to labor time.
Materials
Equipment costs vary widely by efficiency rating — a base 14 SEER system costs far less than a high-efficiency 20+ SEER variable-speed system.
Typical timeline
A straightforward swap takes 1 day. Jobs requiring duct modifications or electrical panel upgrades can take 2-3 days.
Permits
Most municipalities require a mechanical permit for HVAC replacement. Your contractor should pull this on your behalf — confirm it's included in your quote.
Regional price differences
Costs run higher in the Northeast and West Coast due to labor rates, and lower in the Midwest and South. Homes in extreme climates often need larger, more expensive systems.
Ways to save money
- Get at least 3 quotes from licensed contractors
- Ask about manufacturer rebates and utility company incentives
- Replace during shoulder season (spring/fall) when contractors are less busy
- Consider a slightly lower SEER rating if budget is tight — it still meets code
Pros & cons
Pros
- Lower energy bills with a modern efficient system
- Quieter operation than older units
- Better humidity and air quality control
- Manufacturer warranty on new equipment
Cons
- High upfront cost
- Disruption during installation
- May require electrical or ductwork upgrades
Frequently asked questions
How long does a new HVAC system last?
Most systems last 15-20 years with regular maintenance. Furnaces tend to last slightly longer than AC condensers.
Should I replace my furnace and AC at the same time?
It's often recommended since they're designed to work together, and doing both at once usually costs less than two separate service calls.
Cost by state
See adjusted pricing for HVAC Replacement in your state.