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Question DetailsAsked on 6/24/2017

We had a whole unit replace in 2013 at a $13,000.00 cost and in 2017 today the technician had to put 3.5 of freon?

Is this a correct amount of loss in 3 years, because they gave only one year of tee service?

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1 Answer


You do not say what kind of unit - either brand or if this is a combined HVAC unit or heat pump (which I presume from the hgih price) or just an A/C.

Anyway, normally a fraction of a pound or less per year might be considered "normal" loss, though technically there should be negligable losses (generally just a very small fraction of a pound lost in connecting gauges to test pressure and in removing and changing the filter element in the filter/drier during routine servicing) - certainly if you lost 3.5# in 3-4 years I would say you likely have a small, very slow leak - which technically should be located and repaired, but many people just put up with the occasional topping off if the gas refill is not too expensive.

Of course, if the leak suddenly rapidly gets bigger and the unit runs low on refrigerant (which contains and circulates the lubricating oil for the compressor around in the system) then you risk serious damage if the unit runs low on lubrication - plus of course as the refrigerant level drops off significantly the efficiency opf the unit drops way off, and it works harder and loinger each cycle so its life is reduced - so best to repair any noticeable leak which is discovered.

Answered 3 years ago by LCD

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