Air conditioning units can fail and falter for a number of reasons but the most common reason an AC stops cooling is a dirty filter. The good news? A clogged filter is easy to clean or replace on most ...

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Many office buildings, residential homes and apartments have an air conditioning system. This could be anything from a portable unit, a wall-mounted unit or an HVAC system. Air conditioners come with ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Tim Heffernan Tim Heffernan is a writer who covers air and water quality and ...