1 · Home & usage
Works for central AC and heat pumps in cooling mode. Choose how to estimate today’s cooling cost.
Central AC or the cooling side of a heat pump — both are rated in SEER2. (Heating savings are a separate guide.)
Best accuracy: uses your real bills. Your summer peak minus your average month is treated as cooling energy.
Enter your ZIP to load your area’s cooling hours and average electricity rate. Tonnage is on your outdoor unit’s nameplate — or roughly your square footage ÷ 550.
2 · Current system
The system you have now — from its nameplate, or just its age.
Prefilled from the unit's age — edit if you have actual quotes or history.
From the nameplate. Converted to HSPF2 automatically.
3 · Replacement System
The system you’re considering — efficiency tier, quoted price, and rebates.
Estimated yearly savings with the new system
$0
about $0 per month off the energy bill
—
Payback (yrs)
$0
10-yr savings
0%
HVAC energy cut
Estimate based on your utility bills. Actual savings vary with weather, usage, and installation quality.
Environmental impact
0 tons of CO₂ avoided
over 15 years — like taking a gasoline car off the road for 0 years
Annual cooling cost — today vs. new system
Yearly cost at current rates, with lifetime savings and payback.
Keep it vs. replace it
Cumulative cost of ownership over the next 15 years.