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Question DetailsAsked on 5/5/2016

How can a HVAC technician claim to install 11 pounds of refrigerant in a system that has a capacity of only 9 pound

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1 Answer


Rating of the system would be for the compressor, valve assembly, and evaporator coil - NOT including the tubing running from the compressor to the evaporator and back, which with a moderately long to long run could take up to a pound or maybe two I guess.

Also - it is necessary to flush out air and any pressure test gas or leak detection dye from the system before you commence pressure filling it - this could easily take a pound or so of refrigerant, so I don't think (assuming this was a test/repair and flush rather than just a topping off) that extra amount of a pound or two of gas would be unusual.

Ditto if he started topping it off, then found a leak which leaked off some gas before he coupld fix it, so that gas was wasted - then after fixing the leak installed the normal amount for the system.

Could also be he overfilled it.

Answered 3 years ago by LCD

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