We have an almost two year old electric furnace/air conditioning unit with
an "A" frame style evaporator coil mounted in the air handler section of
the furnace. The evaporator coil sits in a very heavy guage plastic or
composite condensate collection pan with excellent drainage, and as far as
I can see, there is no metal to metal contact from the evaporator to other
We change our air filters every 2-3 months, since we live in the Arizona
desert our cooling season is much longer than in more moderate climates.
The interior of this area appears to be extremely clean.
The last couple of times we changed the filters, I noticed that the bottom
of the evaporator frame that sits in the collection pan is showing rust.
The frame material appears to be galvanized steel. Obviously, I know that
water causes and/or accelerates rust.
What I'm wondering is if this is "normal", and if it's not, what measures
should/could be taken to remedy the situation. Since the unit is so new,
I'm mostly concerned about the longevity of the evaporator unit.
TIA for any opinions or suggestions.
(correct the spelling of "geemail" to reply)
Click to see the full signature.