My AC cools o.k. when the outside air temperature is in the high 60s to low
70s F. The air coming out of the vents is below 60F. When the outside air
temp. is in the high 70s or 80s F, my AC doesn't cool, only blows hot air.
Would appreciate any suggestions as to where to look for the problem.
Thanks for any help.
It could be many things. It would be very helpful if we knew if it was
central air or a window unit and how old it is.
Just a couple of suggestions. The charge may be incorrect. If a home
unit fixing this is a professional's job, it takes special equipment and
training; and if low it also means there is a leak to fix first. If it is a
window unit, it is either under warrantee or you junk it.
Restricted (dirty) condensers or evaporators are generally not too
expensive to fix, and then there is the question of the fan and distribution
system for a central unit.
There are others.
How old is it? When was the last time it was serviced (cleaned)?
If a window unit do you have the fresh air switched on or recirculate?
You are past due for service. Keep in mind that a 15 year old unit is
about due for replacement. While I don't suggest replacement when basic
maintenance will do, if it really needs any amount of work, I would replace
it as it is close to the end of its life and a new unit should cost less to
operate saving you some of the money you will spend on one.
Could be any of a lot of things. Low on freon, dirty coils,
bad air flow, fan going bad.... the list goes on. I'd
suggest you call a repair guy and pay him yourself. It's
your comfort you're working on.
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