Air Conditioning &
Heating System Troubleshooting Tips
Sometimes what’s wrong with your air
conditioning and heating system really doesn’t require the service of
an expert repair person. Here are some common troubleshooting tips to
go over before you call for a repair.
A/C Not Cooling or
Check circuit breakers at fuse box. The
outdoor condenser unit and indoor air handler unit have their own
breaker. Even if breakers appear to be in the correct position, they
are often tripped. Flip circuit breaker off and back on. If
second trip happens, call us.
Indoor A/C Unit Leaking
If the unit is leaking water one of three
possible things has occurred
Drain line is plugged. Check to see if
your A/C drain line outside your home is draining properly. If
it is not you can clear it by attaching a wet vacuum to the
Evaporator coil is dirty. Dirt, mold,
and algae are growing on your coil causing it to drip.
Coil is frozen with ice. Your A/C is
probably low on Freon. You will need to turn off the A/C and
call for service.
A/C Fan Runs Continuously?
Make sure your thermostat is set to the
A/C Runs, Won’t Cool Below
Your A/C is possibly low on Freon.
Your ductwork in the attic is leaking.
Your A/C is old and inefficient and
can not keep up with the heat load.
Your air conditioner is under sized
for the heat load demand.
Are Some Rooms Warmer than
In the warmer room, make sure the vent is
open or open it further. If this does not resolve the problem, the
situation is the result of one of the following three conditions.
The ductwork was not sized properly.
The system needs to be balanced by
adjusting the air flow dampers in the grills.
The ductwork has come apart and is
leaking cool air into the attic.
Call for Service.
Thermostat Not Registering
A temperature reading of within three (3)
degrees up or down is considered normal. New digital thermostats are
Musty or Mildew Odor?
Your ductwork got wet and is giving
off a musty odor or it’s possibly growing mold.
No filters were used and the ductwork
is dirty and growing mold.
No filters or wrong filters were used
and evaporator coil is plugged up with algae, fungus, mold and
Drain pan is full of algae, fungus,
mold and bacteria.
Call for service and schedule an extensive
Preventive Maintenance Service.
When Do A/C Filters Need
A/C filters should be kept clean or
replaced monthly. You should be using filters with a minimum
MERV rating of 8 or higher. We recommend an Air Safe 2000 filter.
As dirt, debris, pollen and spores
accumulates on your coil over time it will grow fungus, mold and
bacteria. This build-up will restrict your air flow and cause you to
have less cooling throughout your house and, at the same time,
increase your electric bill. The bacteria and mold spores will
circulate through your entire home and possibly affect your
allergies and your health. The only way to fix this problem is
to have the coil professionally cleaned.
Why Should I Choose a
Most programmable thermostats are capable
of four different time and temperature settings. A programmable
thermostat will reduce your power bill by fluctuating temperature
settings while you are at work, away or asleep. We highly
recommend this product.
Is a yearly Tune-Up
All A/C units should be maintained at
least once per year. We recommend a Fall and Spring check with
our Preventive Maintenance Program.
Burning Smell on Heat
Check the circuit breakers at fuse box.
Please note that when using your heat for the first time in cool
weather, you may smell a slight burning odor. Dust has accumulated
over the months and is burning off the heating coils. This is normal
and should last no more than 30 minutes.
No Heat Coming Out of the
Make sure the heating temperature is set
above the room temperature. Check to make sure the thermostat is set
to “Heat” and “Auto” position. Flip your circuit breaker off and
back on. Some units can take 60 to 90 seconds before the heat cycle
turns on. If you’ve allowed ample time and still no heat, turn your
thermostat to the “OFF” position and call for service.
Heat From System is Not
Make sure the temperature is set above the
room temperature. As air circulates through the system, repeatedly,
it will get warmer. If you have had your heat on for over 3 hours
and it’s still not getting warm you need to call for service.
Heat Runs Continuously?
Make sure the thermostat is set to the
“Auto” position. If the actual temperature is above the temperature
set, call for service. If the actual temperature is below the
temperature set, the heat will continue to run until it reaches the
temperature for which it is set. If you find it hasn’t shut off
after reaching the requested temperature,
call CE Chandler for service 850-626-8225, where we sell comfort.
If you need a free estimate to replace
equipment, if you have questions about products or services
please call us at 850-626-8225 or e-mail us at