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Proper HVAC filtration is at the heart of indoor air quality and provides an important service in keeping indoor environments clean and free from the dust and particulates that may reduce product ...

Q: Can you tell me why it is so important to install the air conditioner filter in a certain direction? What harm, if any, does it do if it's backwards? My husband always puts it in backwards. — Nancy ...

Changing a furnace filter regularly will improve your heating in the winter and your air conditioning in the summer.