Frequently Asked Questions

What is SEER?

SEER stands for Seasonal Energy Efficiency Ratio, and is a needlessly complex way of measuring the efficiency of your air conditioner or heat pump.

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Unlike AFUE, which directly measures the amount of fuel that your furnace transfers into heat, SEER is an arbitrary scale of around 7 SEER (old, obsolete air conditioners), to 14 SEER (new, base-model air conditioners), to around 21 or 25 SEER (state-of-the-art, high-efficiency air conditioners).

At ASM, we typically don't recommend that our customers buy more than a 14 or 16 SEER unit, as the added financial cost for a high-SEER unit is unlikely to be offset during the lifetime of the unit.

For more on SEER, try:
What's a Good SEER Value for My House?

Last Updated a year ago