A/C Mechanic in a can $29.95

Written by: Jim Garner

Have you ever been to an automotive parts store and noticed the large display of R-134a refrigerant?  If you read the fine print, under the large letters R-134a it says in small letters “with stop leak” or “sealant”?  Sounds like a great idea.  I can be an A/C mechanic for $29.95. WRONG! Problem is, most sealants are activated by air and/or moisture and it will crystallize in the system.  It will cause more harm than good. Once the crystallization occurs it can restrict the flow of oil and refrigerant through the entire a/c system. In most cases, the sealants cannot be flushed out to remove them from the system.  This can cause problems with the compressor, condenser, expansion valve, and evaporator, other components in the system.  It can cause blockages and high system pressures.  Also, when the technician recovers the system into his expensive recovery machine, the sealant can render it inoperable. It makes a lot more sense in the long run to replace the part that’s leaking. It may cost more at first, but it will save you time, money, and headaches in the future.

 

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