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Question DetailsAsked on 11/8/2017

Is it common to replace 10 lbs of freon when changing the txv unit in 2 yr old compressor or is A/C guy overchargi

Overcharging me? He told me they have to drain the refrigerant out of unit to change the txv part and then put new refrigerant into unit at an additional cost of $650. True or not?

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1 Answer


Here is a related question about the recovery of the refrigerant per law -

Some contractors will reuse the refrigerant provided it is not burnt/scorched or dark with contaminants - others will not as a matter or principle andpotentiall liability.

His price is in the normal range for 10# of R-22 Freon replacement - but if he would not replace it with the old gas (plus likely a small amount of makeup gas) he should have prewarned you about that cost. If your TXV was bad that would not, by itself, burn the oil in the refrigerant - but if the TXV malfunctioning caused the compressor to overheat because of inadequate refrigerant flow or excessive downstream pressure then that can scorch the oil and mandate flushing the system (in which case you would have probably seen a flushing charge too of a hundred or two and a filter/drier element replacement charge too) before refilling with new refrigerant.

One other thing I would question is the warranty - most A/C's would have a 5 or 10 year warranty covering that part - which might or might not include the replacement gas if needed.

Answered 3 years ago by LCD

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