Higher efficiency equipment costs more upfront but lowers your monthly utility bills. When comparing models, look for these standard industry metrics: Cooling Efficiency (SEER/SEER2)

The measures cooling efficiency.

: Usually a furnace (powered by gas, oil, or electricity) or a heat pump.

Look for the ENERGY STAR label to ensure a unit is independently certified to save energy. Heating Efficiency (AFUE & HSPF)

Best Central Air Conditioning Buying Guide - Consumer Reports

: The indoor component that blows conditioned air through your home.

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