HVAC Cost Calculator
Estimate HVAC installation and replacement costs
Total conditioned square footage
Select HVAC system type
Higher = lower energy bills
System Size
—
tons/BTU
Equipment Cost
—
USD
Installation Cost
—
USD
Total Estimated Cost
—
USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Our calculator estimates equipment and installation costs based on home size, system type, and efficiency.
- Determine home conditioned square footage
- Select system type
- Choose efficiency level
- Enter specifications
- Get multiple quotes from contractors
Expert Insights
Smart analysis for your HVAC project
Right-Sizing Analysis
Oversized AC short-cycles and dehumidifies poorly. AI uses Manual J principles to estimate correct tonnage based on your inputs.
SEER Efficiency ROI
16 SEER costs ~15% more than 14 SEER but saves 15-20% annually. AI calculates payback period for each efficiency tier.
Duct Leakage Impact
20-30% energy lost through leaky ducts. AI estimates potential savings from duct sealing based on your home size.
Calculation Formula
System size = ceil(Home size / 500 sq ft per ton) [assumes moderate climate; hot climates need more]
Total installed = Size x Price per ton (installed) x Efficiency multiplier
Equipment = Total x 0.45 (~45% of installed cost)
Installation = Total - Equipment (~55% of installed cost)
Authority References
Our calculations are based on guidelines and standards from these authoritative sources:
- Air Conditioning Contractors of America (ACCA) — Manual J — Residential Load Calculation. Learn more
- U.S. Department of Energy — SEER Efficiency Standards. Learn more
- ASHRAE — Standard 55 — Thermal Environmental Conditions for Human Occupancy. Learn more
Frequently Asked Questions
How much does a new HVAC system cost?
Central AC + furnace: $5,000-$12,000 installed. Heat pump: $4,000-$10,000. Mini-split: $2,000-$8,000.
How long do HVAC systems last?
Central AC: 15-20 years. Furnace: 15-25 years. Heat pump: 10-15 years. Regular maintenance extends life 5+ years.