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Home Air Conditioning Maintenance Made
Easy
Left alone, cool things warm up from their warmer surroundings.
Every air cooling system takes advantage of some very
interesting laws of physics to reverse this and make your home
temperature lower than the outdoors. Fortunately, you don't
have to be a scientist to keep that system working well. Here
are some simple tips to do just that...
The most common AC system problems result from something being
at least partially clogged. There are several possible sources
for that congestion, but the most common is dirty drain
lines.
Just like clogged arteries, when your drain line gets filled
with material your system will have a 'heart attack'. In this
case, the cooling capacity is reduced and sometimes compressors
will stop functioning altogether.
Every system has a condensate drain pan and drain line. AC
systems don't just cool the air, they de-humidify it too. The
moisture removed from the interior has to go somewhere. That
somewhere is into the cooling coil and out the condensate drain
line.
Since that water almost always contains minerals, and often
some mildew, lines can get clogged. Quarterly cleaning will
help keep that part of the system healthy and functioning
efficiently. Use a commercial coil cleaner and a wire brush a
few minutes every few months and your system will stay in good
working order.
Apart from cleaning the system, do a little preventive
maintenance to head the problem off before it happens. Change
the filter monthly every month it's in use, and before first
use. Most modern filters have an anti-microbial capacity, but
check to make sure.
That has the added advantage of reducing mold, mildew and algae
buildup within the system. It also helps keep it out of your
home where it can contribute to discomfort and cause medical
problems. And it helps to keep dust from being blown inside the
house.
Lots of allergies are made worse by dust-borne pollen,
dust-mites and other air-circulated nasties. You'll be doing
the allergy sufferer in the house a favor by keeping the system
clean.
AC systems often have places that moisture gathers and remains
where mold, mildew or algae can build up despite the best
filters' efforts. Heavy buildup may need to be removed by a
professional. But for smaller jobs, a mild disinfectant will
help eliminate the problem. Just spray into the filter intake
and let the system do its job normally.
Help keep the motor working efficiently by following the
manufacturers guidelines. Usually that amounts to no more than
a few drops of electric motor oil squirted into the oil ports
once a year. While you're at it, inspect the blower motor fan
blade to check for mold or mildew buildup.
Since the whole idea of an AC system is to take warm air, cool
it and put it into the house (expelling even warmer air
outside), your system should be several degrees cooler than any
other area. The duct temperature should be from 15-25 degrees
cooler than the air inside your home. It warms slightly as it
moves through the system.
Check the supply duct with a stem-type or electronic wire
thermometer. If the difference is too small, check filters,
lines, circuit breakers, etc. If need be, call for professional
help.
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