For years, HVACR technicians have been used to primarily working with nonflammable (A1) refrigerants, such as R-410A, R-22, and R-404A. Now that HCFCs are being phased out and there is growing concern ...
Refrigerant recovery machines are designed to last a long time. In fact, some manufacturers say that with proper maintenance, their units can last more than 10 or 15 years. But machines eventually ...
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