Your Guide to Understanding How SEER Ratings Work

If you are in the market for a new HVAC system, you will notice that a machine’s SEER rating is frequently discussed. This rating provides crucial insight into how an HVAC unit works, so it helps to understand what a SEER rating is and why it matters. Ultimately, getting the right SEER rating can save you hundreds of dollars. What Does a SEER Rating Mean? SEER stands for Seasonal Energy Efficiency Ratio. The SEER rating on a machine tells how much power the system will use to cool a home. The SEER scale uses lower numbers for a less-efficient machine and higher numbers for one that is more efficient. Typically, the SEER rating you see on an AC system will be its maximum rating. This means that the system will operate at that SEER level when run in optimal conditions, but its SEER rating may drop if you take too long between maintenance appointments or do other things to impair efficiency. SEER ratings for residential machines can range from as low as eight to as high as 27. Modern air conditioners are required to reach a rating of at least 13 SEER by the U.S. Department of Energy. A SEER...

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