Comfort Supply's Blog by Clay Blevins

Do you know the difference between ‘SEER’ and ‘EER’ ratings? If so, do you know how to explain this difference to your customers? Do you know which is the better ranking to use in different situations and why it matters?

SEER: Seasonal Energy Efficiency Ratio

The most common measurement used to rank the efficiency of a central air conditioner, SEER is   the certified AHRI rating for a residential product 65,000 BTUH and under. SEER ratings are determined in “moderate temperatures,” 82 degrees or below.

Start by using buzzwords like ‘Energy Star,’ which designates equipment that ranks in the top 25% of efficiency. Then explain that while SEER is more commonly known, both SEER and EER ratings are considered in Energy Star calculations. The difference being that SEER is a rating of efficiency at moderate temps and EER is a rating of efficiency at extreme temps.

The EER rating is truly the most effective way to measure the efficiency of a central air conditioner. When do homeowners care more about their air conditioners, when it’s 75 degrees or when it’s 100 degrees outside? If you answered 100 degrees (which is what most people answer) then your customers are better off getting a central air conditioner with a high EER rating.

Besides saving homeowners energy (and money on utility bills) when they need it most, equipment with a higher EER rating tends to be more expensive, so you can upgrade your sale simply by having the SEER vs. EER conversation with your customer.