How Much Does an HVAC Replacement Cost? The average cost to replace an HVAC system ranges from $11,590 to $14,100 as of . This is based on 56,000 real homeowner projects over the past 6 months with Modernize, and includes central air conditioning, furnace, and heat pump replacement plus labor costs. HVAC replacement cost depends on your home’s size, the … Continue reading How Much Does an HVAC Replacement Cost in 2025?