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HVAC system planner
Size a system for your home and estimate replacement cost by type and efficiency.
Balanced summers and winters
Baseline
Enter the conditioned area to see a recommended size and a cost range.
How to use the HVAC planner
Enter your conditioned area, climate, ceiling height and insulation, then choose the system type and efficiency. The planner returns a rule-of-thumb size (tons) and an installed cost range split by equipment, labor, ductwork, coolant and permit.
- Sizing here is a quick rule of thumb, not a Manual J load calculation.
- Higher SEER2 saves energy but costs more up front.
- Ductwork condition strongly affects real cost.
Before you buy
Get a professional load calculation and 2–3 itemized quotes. Ask about rebates and the parts + labor warranty.
Permits: A permit may be required for this project. Verify with your local authority before you start.
These estimates are based on state-level averages, not ZIP-level precision. The final cost varies with your home and local market.