Air Conditioning

For Central Systems, Look for High SEER Score

UPDATED 5/30/2012

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Air Conditioning, including:

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  • Necessary codes
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Getting the size right makes it greener

Cooler, drier air and better energy performance

Air conditioners are significantly more efficient than they were in the 1970s and are now capable of producing the same amount of cooling with as much as 50% less energy, the government’s energy office says.

Watch the numbers. An air conditioner's seasonal energy efficiency ratioSeasonal Energy Efficiency Ratio (SEER) is the total cooling output (in BTU) of an air conditioner or heat pump during its normal annual usage period divided by its total energy input (in Watt-hours) during the same period. The units of SEER are Btu/W·h. SEER measures how efficiently a residential central cooling system operates over an entire cooling season. The relationship between SEER and EER depends on location, because equipment performance varies with climate factors like air temperature and humidity. (SEER(SEER) The efficiency of central air conditioners is rated by the Seasonal Energy Efficiency Ratio. The higher the SEER rating of a unit, the more energy efficient it is. The SEER rating is Btu of cooling output during a typical hot season divided by the total electric energy in watt-hours to run the unit. For residential air conditioners, the federal minimum is 13 SEER. For an Energy Star unit, 14 SEER. Manufacturers sell 18-20 SEER units, but they are expensive. ) is key. That's the total cooling capacity (in BtuBritish thermal unit, the amount of heat required to raise one pound of water (about a pint) one degree Fahrenheit in temperature—about the heat content of one wooden kitchen match. One Btu is equivalent to 0.293 watt-hours or 1,055 joules. ) compared with total electrical input (in watt-hours) over the course of a cooling season.

The higher the SEERSeasonal Energy Efficiency Ratio (SEER) is the total cooling output (in BTU) of an air conditioner or heat pump during its normal annual usage period divided by its total energy input (in Watt-hours) during the same period. The units of SEER are Btu/W·h. SEER measures how efficiently a residential central cooling system operates over an entire cooling season. The relationship between SEER and EER depends on location, because equipment performance varies with climate factors like air temperature and humidity., the higher the ...

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Mon, 06/16/2014 - 15:42

SEER Score
by Mark Gadala

SEER Score is crucial in deciding the efficiency of an air conditioning unit. Smart consumers should definitely be looking for units with a SEER score of 15 or higher


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