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Central Air Efficiency - AC SEER Rating

If you’ve done any shopping for air conditioners recently, you’ve probably run across the term SEER. So what is a SEER rating exactly? First of all, SEER stands for Seasonal Energy Efficiency Ratio, which is more or less self-explanatory. This AC rating describes how efficiently your air conditioner or heat pump can cool your home. Higher ratings are better; that is, the higher the score, the less electricity your air conditioner will use to provide the same amount of cooling power.

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SEER ratings meaning

SEER ratings have increased quite substantially over the last few decades. Back in the 1970s, for instance, the average air conditioner was SEER 6. Today, the bare minimum is 9.7 for single-package systems and 10 for split systems. The SEER rating of a 20-year old air conditioner is therefore likely to be quite low.

If you’re serious about saving money, though, there are plenty of options available with substantially higher SEER ratings. Top-of-the-line central air conditioners can get up to SEER 20, and ductless split systems can go even higher. Replacing your air conditioner with a more efficient model is a powerful way to save electricity; for instance, upgrading from an older SEER 9 air conditioning system to a high-efficiency SEER 18 AC unit will cut your energy usage in half. Here’s a SEER rating chart to help you visualize the relation between electricity costs and SEER rating:
SEER rating chart - AC efficiency vs electricity costs

As you can tell from the chart, the higher the your AC’s SEER rating, the less you will spend on energy costs per year. You might therefore consider getting a slightly more expensive AC unit with a higher rating in order to save more money in the long run.

How efficient is your Air conditioner

Every air conditioner has a nominal SEER rating provided by the manufacturer, but because no two homes are alike, your energy performance may vary. Depending on the local climate, home layout, quality of ductwork, and insulation, your actual efficiency may be higher or lower than the unit’s rating. When we install an air conditioner or heat pump in your home, we’ll analyze your cooling situation and give you an actual SEER rating that will describe your air conditioner’s performance specific to your home.

The good news is that because SEER depends on more than the air conditioner itself, there are steps you can take to improve your energy efficiency without replacing your air conditioner. Adding more insulation to your home can help, as can having your ducts sealed. Even steps as simple as making sure the outdoor unit is in the shade, which makes it easier for the air conditioner to remove heat from the home, can change your SEER. We’ll be happy to help you optimize your home for highly efficient cooling.

Call us at (413) 200-4203 for fast, reliable emergency AC services! Find your local Hurley & David today for fast, reliable emergency AC services in your area!

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