Wondering what a new air conditioner or heat pump could save on your power bill? Plug in your numbers below. It takes about a minute, and you can change anything to see how the result moves.
This is an estimate for cooling only. It uses the standard formula: cooling BTU × hours ÷ efficiency. Older SEER ratings are converted to SEER2 by dividing by about 1.05. Real bills depend on your house, ductwork, thermostat habits and weather.
Where to find your numbers
Your current SEER is usually on the yellow EnergyGuide sticker or the data plate on the outdoor unit. No sticker? Go by age. Most systems put in before 2006 are 10 SEER or lower. From 2006 through 2014 the federal minimum was 13 SEER, and from 2015 to 2022 it was 14 in the South.
Your electric rate is on your bill. Divide the energy charge by the kWh you used to get the rate. Fees and taxes can push the real number a little higher.
What SEER2 means
Since January 2023, efficiency is tested under SEER2 rules with more realistic airflow, so the same unit scores a little lower than it did under the old SEER test. The calculator converts your old SEER to SEER2 so you’re comparing apples to apples. Our regional efficiency guide explains which SEER2 levels can be installed where you live.
Don’t oversize to chase savings
A bigger unit doesn’t save money. It short-cycles, dehumidifies poorly and wears out sooner. Get the size right first with our sizing tool or a load calculation from your contractor, then pick the efficiency that pays back for you.
Ready to look at systems? Start with the system selector, or call us at (877) 843-4822 and we’ll talk it through.