man looking at paper adjusting thermostat

What energy efficiency ratings mean and why they’re important

More than half of your utility bills in Phoenix are comprised of the cost to heat and cool your home. To save as much money as you can, you need a system that can provide home comfort as efficiently as possible. The better your system’s energy efficiency, the more your system is doing while using less energy. If you’re preparing to upgrade or replace your HVAC equipment, you should understand a few terms and ratings to be fully informed and get the best energy efficiency possible.

SEER (used to measure cooling efficiency)
The Seasonal Energy Efficiency Ratio, or SEER, rating assesses the cooling efficiency of your equipment at different temperatures. Higher SEER ratings signify better energy efficiency, and therefore, more affordable utility bills. For cooler northern states, The Department of Energy requires a minimum 13 SEER rating. Warmer, southern states must have a 14 SEER-rating minimum. If your unit has a poor SEER-rating, an upgrade could bring you a beneficial spike in energy savings.

AFUE or HSPF (used to measure heating efficiency: gas or electric)
Annualized Fuel Utilization Efficiency (AFUE) ratio shows the percentage of heat produced for every dollar of fuel used—similar the miles per gallon you get from your car. Higher AFUE ratings translate into lower energy costs. So, an AFUE rating of 80 means that 80% of the heat produced by your furnace is heating your home, and 20% of the heat is lost through venting.

The Heating Seasonal Performance Factor (HSPF) measures the heating efficiency of heat pumps. It is in essence the SEER rating for winter since it measures only heating efficiency. Like the other ratings, higher numbers indicate better energy efficiency.

At Dial One Mears Air Conditioning & Heating Inc, you’ll find equipment with the best energy efficiency ratings. We can help you find out the energy efficiency of your existing equipment and help you find ways to improve on it and save money—whether with continued maintenance or with up-to-date, more efficient equipment. Just call us at 602-997-5701 or schedule an appointment with us online.