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How Air Conditioning Systems Work

Heat pumps and most central air conditioners are called "split systems" because there is an outdoor unit (called a condenser) and an indoor unit (an evaporator coil). The job of the heat pump or air...

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Central Air Conditioning

Central air conditioning units are usually matched with a gas or oil furnace to provide heat through the same set of ducts.

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Rating a Unit's Efficiency

The efficiency of central air conditioning systems is rated by a Seasonal Energy Efficiency Ratio (SEER). SEER ratings typically range from 13 to 23, with the highest numbers indicating the most...

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Why is changing filters on my HVAC units important

Filters protect HVAC units from dirt that will coat coils and other parts inside the units. A proper filter change program will go a long way to ensuring that coils transfer heat efficiently allowing...

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What does HVAC mean?

While the Energy Center usually tries to avoid the use of acronyms, HVAC is in common use in the heating and cooling industry. It stands for "heating, ventilation and air conditioning," three functions...

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When To Replace Your Filters

Are the return air vents in your house covered with dirt? If so, you’re not cleaning or replacing your filter often enough! You should replace or clean the filter once a month.

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