SEER savings calculator · Phoenix & West Valley

SEER Savings Calculator

Compare what your current AC costs to run with a new, more efficient system, using Phoenix-area cooling hours and your electric rate.

SEER and savings questions

What is SEER and SEER2?

SEER (Seasonal Energy Efficiency Ratio) measures how much cooling an AC delivers for the electricity it uses. SEER2 is the newer test standard used since 2023; it’s slightly stricter, so a SEER2 number is a little lower than the old SEER number for the same system. Higher is more efficient.

How much can a higher SEER AC save in Arizona?

Because Phoenix-area homes run the AC for much of the year, efficiency matters more here than in most of the country. Replacing a 10 SEER system with a 15.2 SEER2 system can cut cooling costs by roughly a third or more. The calculator shows an estimate for your home.

What is the minimum SEER2 in Arizona?

Under federal rules since 2023, new split-system central ACs installed in Arizona and the rest of the Southwest must meet at least 14.3 SEER2 (13.8 SEER2 for larger systems of about 4 tons and up), plus a hot-weather EER2 minimum. Many homeowners choose a higher rating for the extra savings.

Is a higher SEER always worth it?

Not always. Higher-efficiency systems cost more up front, so it depends on how long you plan to stay and how much you run the AC. We can show you the options side by side at a free in-home estimate.

More free tools: see all homeowner tools.

SEER Savings Calculator

Compare your cooling costs

When was your current AC installed?

New system efficiency

How much do you run the AC?

SEER and savings questions