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A question for the pros --

I live in an apartment and I've noticed that my AC hasn't been cooling
well recently. The maintenance staff checked the freon level and said
it's fine, but it's still not cooling well.

Tonight I decided to poke around inside the air handling unit to see
what I could find. Inside is two sets of cooling coils arranged in an
upside V arrangement. When I placed my hand on them while the AC was
running I discoverd that one side of the V was was cold but the other
set was not. It was at the ambient air temp and was not cooling at
all.

My AC is a standard heatpump unit setup with one twist. The ho****er
heater is attached to air handling unit via two hoses to provide backup
heat (or primary heat if you prefer to heat with gas rather than
electricity).

My question is should both sets of cooling coils be cooling or is one
set of coils for AC and the other set for heating? Is the reason my AC
isn't cooling very well because 50% of the cooling coils aren't
working?

Thanks for you help.

Neal B.
Richmond, VA

Are the coils separate, not connected via the piping? you sort of indicate
that they are.
If so, I have not seen a dual coil setup in residential in more than 15
years. Way expensive.
Since the Hot water is connected to one coil I am assuming that you have a
hot coil and a cooling coil. If that is correct then it would be normal for
one to be ambient and the other cold.

Periods of high humidity do cause an apparent loss in cooling. The unit can
only do what it is designed to do. No most folks do not design for the
extremes. Usually normal high temps and humidity.

Measure the return air temp and the closest supply air temp to the coil. (
the one that blows the hardest ). At the same time. There should be a
difference of ~20 degrees F. If less than 10 F then call back the a/c guys
boss and have him come up and check the unit.

WAG's from information supplied