For decades, the majority of vapor compression cooling systems — those found in practically every car, home and office in America — have worked their cooling magic by compressing a chemical compound known as R22, or Freon. This refrigerant is reliable, effective and cheap — but also, unfortunately, extremely detrimental to the environment. Nearly 50…

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There is one quick and easy way to make sure your air conditioning system is operating more efficiently this summer, and it’s often overlooked by both homeowners and people who maintain commercial buildings. Keeping your central HVAC system clean inside and out is essential for proper operation — and if you don’t bother, you’re looking…

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