Average cost
Installing a full HVAC system — furnace and central air — typically costs $5,500 to $14,500 for a single-family home, including ductwork adjustments where needed.
Cost breakdown
Equipment (the furnace and condenser unit) is usually the largest single line item, with the remainder split between labor and any ductwork or electrical work required to support the new system.
Factors affecting price
System size
Larger homes need higher-capacity systems, which cost more both in equipment and installation labor.
Regional differences
The Northeast and West Coast run above the national average on installation labor; the South and Midwest tend to be more affordable.
How to save money
- Get at least three quotes from licensed HVAC contractors
- Ask about manufacturer rebates and local energy-efficiency incentives
- Schedule installation outside of peak summer/winter demand where possible
When to hire a professional
HVAC installation involves electrical and refrigerant work that should always be handled by a licensed contractor.
FAQ
How long does HVAC installation take?
A straightforward system swap typically takes one to two days; adding new ductwork can extend this to a week.