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"Howard Beale" <usenet@grasslake.net> wrote:
>We installed a new forced-air furnace and A/C system in our house 6 years
>ago. The A/C system is Puron and until very late last summer the system
>worked great; on the last cooling day of the year (more humid than hot), the
>expansion coils iced up and the system would not cool.
>
>We had it recharged right before memorial day and I asked the service guy if
>loss of refrigerent was normal -- he said no, it's supposed to be a sealed
>system but tiny leaks seem to happen and that I shouldn't worry too much
>about it -- every 5-6 years needing a recharge is not bad considering the
>service life is probably around 20 years.
>
>The system worked well until the past couple of weeks when it seems to have
>trouble keeping up with very hot days (>90F) and two days ago when it iced
>up again, which leads me to believe the 5-6 year leak has become a 2 month
>leak I need to have more permanently fixed.
>
>What's the industry best practice for solving these leaks? Is the supply
>line itself a culprit or is it typically just the solder joints at the
>expansion coil or the coil itself? Is it a soap-and-water mission over all
>the joints, or is there some high-tech tool to check for pressure losses?
>
>What I would like to avoid is a knee-jerk fix (like ripping apart sheet metal to
>replace the coil when it doesn't need it).
>
>The thing I am most worried about is a leak in the line itself, since most of
>it is soffited in an area of the basement that's been remodeled (a year
>after the install, so likely not a source of a puncture).
>
What does it say when Carrier Corporation uses this product
http://www.cliplight.com/hvacr/
on BRAND NEW 410a systems that develope pinhole leaks
(formicary corrosion) in brand new evaporator coils???
Myself, I have successfully used this product for 2+ years on resi- &
commercial package & split systems, 1.5 - 40 tons.
granted, the cash cow dies, but the funeral can be expensive.
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Re: Best service strategy for leaking Puron A/C system?
