Central AC Replacement Cost Calculator

For a 2,000 sq ft home, standard central AC replacement typically runs $4,000–$9,000 installed. A heat pump (which heats AND cools) runs $5,500–$12,000. Costs include the outdoor condenser, indoor evaporator coil, lineset, electrical disconnect, and labor. Get at least 3 quotes — prices vary significantly by region and season.

A heat pump can heat and cool and may qualify for federal tax credits, but Michiana winters are cold. Ask specifically about cold-climate ratings and whether dual-fuel (heat pump + gas furnace backup) is wiser than heat-pump-only. If you will keep a good gas furnace and only the AC is failing, a quality standard AC can still be the right planning choice.

SEER2 (Seasonal Energy Efficiency Ratio 2) measures cooling efficiency — higher is better. The federal minimum is 15 SEER2 in the South and 14 SEER2 in the North (as of 2023). Units rated 16–20+ SEER2 use 20–30% less electricity but cost $1,000–$2,500 more. Calculate payback based on your electric rate and cooling hours.

If your AC uses R-22 (phased out as of 2020), recharging it with R-22 is extremely expensive (often $200–$500/lb, and a typical system holds 6–12 lbs). The existing lineset and indoor coil may not be compatible with modern R-410A refrigerant. In most cases, replacing the entire system (condenser + evaporator coil) is the right call. A reputable contractor will assess compatibility.

Assumptions (not a quote): 1,800 sq ft one-story, existing ~13–14 year R-410A AC, gas furnace stays. Like-for-like central AC with Manual J and new coil often plans around $5,200–$7,800. Cold-climate heat pump path with dual-fuel discussion often plans around $7,500–$11,500 before credits. Your ducts, lineset, and electrical will change the number. See the local AC & heat pump market answers for citeable context.