Question about Heating & Cooling
First you need to be EPA certified to buy the refridgerent. You need to know/ID what kind of refrigerant. [ R22 R143a etc. ] On a home system a good set of gauges and connect properly on a 22 unit low side is blue, suction/low pressure line is larger size pipe than high pressure liquid line. High side red smaller diameter. Connect both hoses check pressures if their is no reading the compressor is not running. If compressor is running on a 22 unit the high side red should be 225 to 275 should not go above 350 psi or it will cause damage your unit more or cause a rupture low side should be from 60 psi to 80 psi don't go any higher to much freon is no good and will cause higher temp. Be careful because were talking high pressures you should have a certified tech. do this if you add freon you must have a leak it dose not evaporate their is no winter summer freon its a sealed system and should never need refrigerant
Posted on Jul 15, 2009
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Posted on Jan 02, 2017
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