Use this free HVAC replacement cost calculator to estimate furnace and AC replacement, central AC replacement, heat pump replacement, and full system replacement before you call contractors. Enter your home size, system type, efficiency tier, ductwork condition, installation complexity, and region to see low, typical, and high 2026 cost ranges. Results are shown on the page with no email or phone number required.
For better inputs, check the HVAC sizing guide before choosing a system size, then compare your result with the efficiency cost guide, the HVAC cost breakdown, and the HVAC planning guide. If a contractor quote falls outside your estimate range, ask which line item, equipment choice, ductwork issue, or local code requirement explains the difference.