Refrigerant recovery machines are to contractors what HVAC systems are to homeowners. Heating and cooling systems are usually the most expensive pieces of equipment in a house, and they need regular ...
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 ...
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