" wrote in message
news:Z8rqi.883$Bb1.791@trnddc02...
Was wondering if, for an A/C or Dehumidifier, are the evaporator coils
MORE prone to rust if the fan is NOT allowed to keep running for a period
of time after the compressor shuts off, or does that not make any
difference in terms of rust developing in the evaporator coils. Seems to
me if the fan is allowed to run for a period of time, this helps dry the
evaporator coils...would that mean they are less likely to rust or
corrode?

Also wondering if the compressor itself being shut off for as little as
exactly 2 minutes is bad for a dehumidifier's compressor. I'm finding
that most dehumidifiers I've tried can sometimes only turn off the
compressor as little as 2 minutes at a time before turning the compressor
back on, although the compressor stays on for longer period. Would I be
better off just running it continuous mode for X hours per day and
shutting it off with a timer for Y hours a day rather than leaving it on
24 hours with it cycling?

By the way, I did use a timer for a Friedrich (made by LG) unit, and,
STILL, it only lasted 2 summers....can it be that if it says "Made in
China" that I can only expect it to last 2 years no matter what...or was
the unit that died after 2 years the exception? Is Amana better than
Friedrich even though both are "Made in China"? The Amana is not believed
to be made by LG.

J.

The evaporator shouldn't rust at all, they're normally made of aluminum,
often with copper coils, but I've seen all-aluminum ones as well. Ideally
the fan should run for a bit after the compressor shuts off to prevent
bacterial growth though.

2 minutes is quite a short cycle, it's probably enough to let the pressure
equalize, but I'd rather see something closer to 5 minutes for good measure.

Leaving it on all the time will definitely hit your electric bill, but it
depends on how much it otherwise has to run to keep the place comfortable.