Think Your AC Won't Make it Through the Summer? We've Got the
Fixes
Is
your AC making ominous noises? Maybe it sounds fine but isn't cooling. Here's a
list of common air conditioning warning signs and their likely causes and
fixes.
“Let
comfort be your guide,” says Tom Hutchinson of Hutchinson Plumbing Heating
Cooling. Air conditioning is all about comfort, so the simplest way to evaluate
your system is to ask: Am I comfortable?
Air
conditioning and HVAC units don’t last forever -- 12 years is an average
lifespan -- and the moment they fail is usually when you need them the most.
The good news is that not every system malfunction spells total doom. Many
nuisances are so cheap and easy to fix, you'll kick yourself for not doing them
sooner.

Warning Sign #1: My Air Conditioning Won't Turn On
Possible cause: Often, the
most likely culprit is the easiest to remedy: The thermostat isn’t set
correctly, or power isn’t reaching the AC unit.
The fix: Make sure
that the thermostat is set to AC or “cool,” that the temperature setting is
correct, and that the battery is fresh. Second, check the circuit breaker: It
could simply be a tripped fuse.
Cost: Free
Warning Sign #2: I'm Not as
Comfortable as I was Last Year
Possible cause: "Airflow
is paramount to comfort," notes Hutchinson. If you aren't comfortable, the
problem usually can be traced to issues with airflow.
The fix: Change the
filter. (You should do this as part of regular HVAC maintenance anyway.)
Depending on the quality of the filter, the amount of people living in the
house, and if there are pets, the filter should be changed every 30-60 days.
Outdoors, make sure there's at least 24 inches of
clearance on the sides and 5 feet on top of the unit. Also, check to make sure
there are no obstructions to the home's cold air returns and registers.
Cost: $5 to $20,
depending on the filter.
Warning Sign #3: My Utility
Bills are Abnormally High
Possible cause: A spike in
operating costs typically signals inefficient operation. After a dirty filter
(warning sign #2), the most likely culprit is a choked condensing coil. Located
within the outdoor unit, the coil has countless cooling fins -- much like a car
radiator -- that can accumulate dust and debris.
The fix: Call out a
pro for a spring tune-up.
Cost: $75 to $150
Warning Sign #4: Weird
Noises During Startup and Operation
Possible cause: Rattling,
buzzing, or ticking? The good news is that the cause might be little more than
a loose screw. The bad news is that it could be caused by a bum blower motor
(indoors) or bent fan blade (outdoors).
The fix: If you're
lucky, a simple tightening here and lubricating there will fix the problem. If
not, you might require a new fan motor or fan blade.
Cost: $75 to
$150 for an inspection and tune-up; $150 to $750 for a new blower motor.
Warning
Sign #5: The AC Shuts Off Before or Long After I'm Comfortable
Possible cause: Improper
placement of the thermostat can wreak havoc on one's comfort. The unit might be
in direct sun, too close to a register, or near a hot oven. Also, a remodel
might have you spending more time where the thermostat is not.
The fix: Relocate
the thermostat.
Cost: Free if
you're handy (and plan on reusing the same unit); up to $250 for a new
programmable unit, plus another $90 for an electrician to install it.
Warning Sign #6: There's a
Puddle of Water Next to my Furnace
Possible cause: During
normal operation, the system generates moisture in the form of condensate. That
water collects in a pan and flows out a line either into a floor drain or
condensate sump basin. An accumulation of water signals a blockage or
disconnection of the tube.
The fix: Inspect
the tube for crimps, clogs, and disconnections. Also, if the water flows into a
sump basin, ensure that the sump pump is in good working order.
Cost: Free to
clean out blockage; $20 to replace the tube; $40 to $110 for a new condensate
sump pump.
Warning Sign #7: The Air Coming
Out of the Registers Doesn't Feel as Cold as it Used to
Possible cause: The
refrigerant lines aren’t insulated.
The fix: The
outdoor unit is connected to the indoor system by two copper refrigerant lines,
which should be covered with insulating sleeves. Make sure that they are. Also,
the system may need its refrigerant re-charged.
Cost: $5 for
insulating sleeves; up to $150 for a system re-charge.
Warning Sign #8: My AC Unit
Refuses to Kick On at All
Possible cause: Burnt-out compressor
The fix: If the
compressor fails, the unit won’t run. The only fix for this is a costly
replacement of the equipment, which includes various small parts, new Freon,
and labor.
Cost: $600 to
$1,900. It might be wise to replace your air conditioner if it’s more than eight years old, or
if the estimated cost of repair is more than 50% of the cost of a new unit.
When you have a real estate question, pleas call text, or email