Air Conditioner Repair Checklist
1. AC Won’t Turn On
There can be a couple of causes why your AC unit won’t cool: an overloaded circuit breaker, wrong thermostat settings, a switched off switch or a full condensate drain pan.
Overloaded Circuit Breaker
Your air conditioner won’t turn on when you have a blown breaker.
To see if one has blown, go to your house’s main electrical panel. You can find this gray box on the wall in the basement, garage or closet.
- Make sure your hands and feet are dry before you check the panel or breakers.
- Find the breaker marked “AC” and ensure it’s in the “on” spot. If it’s overloaded, the lever will be in the "off" position.
- Firmly transfer the lever back to the “on” location. If it immediately triggers again, don’t touch it and contact us at 478-202-3076. A breaker that keeps turning off may signal your residence has an electrical problem.
Inaccurate Thermostat Settings
If your thermostat isn’t telling your equipment to start, it won’t switch on.
The first step is making sure it’s set to “cool” and not “heat.” Otherwise your air conditioner may not turn on. You might also receive heated air moving from vents since the heat is running instead.
If you have a regular thermostat:
- Put in new batteries if the monitor is empty. If the monitor is showing garbled characters, buy a new thermostat.
- Ensure the proper option is displaying. If you can’t change it, override it by decreasing the temperature and pressing the “hold” button. This will force your AC to work if programming is not right.
- Attempt to set the thermostat 5 degrees lower than the house’s temperature. Your AC won’t cool if the thermostat is identical to the space’s temperature.
Once your thermostat is set accurately, you should start getting cold air quickly.
If you have a smart thermostat, including ones produced by Nest, Ecobee, Lux, Honeywell or Bosch, go to the manufacturer’s website for assistance. If you’re still having problems, reach us at 478-202-3076 for support.
Your system typically has a shut-off device around its condenser. This switch is commonly in a metal box hung on your home. If your air conditioner has recently been maintained, the lever may have unintentionally been turned off.
Clogged Condensate Drain Pan
Condensate drain pans hold the additional liquid your system pulls from the air. This pan is located either below or in your furnace or air handler.
When there’s a blockage or backed up drain, water can build up and prompt a safety feature to turn off your air conditioner.
If your pan includes a PVC pipe or drain, you can clear the extra condensation with a formulated pan-cleaning tablet. You can buy these tablets at a home improvement or hardware retailer.
If your pan has a pump, look for the float switch. If the switch is “up” and there’s water in the pan, you may need to replace the pump. Contact us at 478-202-3076 for support.
2. AC Blows Warm Air
If your air conditioner is going but not delivering cold air, its airflow may be congested. Or it may not have sufficient refrigerant.
Your unit’s airflow can be restricted by a plugged air filter or filthy condenser.
How to Change Your Air Filter
A dirty filter can cause a lot of issues, including:
- Reduced comfort
- Frosted refrigerant lines or evaporator coil
- Uneven cooling
- Increased energy bills
- Making your system stop working faster
We suggest changing flat filters once a month, and pleated filters every three months.
If you can’t recall when you last replaced your filter, turn off your system totally and remove the filter. You can find the filter in your furnace or air pump’s blower compartment. It might also be found in an attached filter holder or wall-mounted return air grille.
Hold the filter up to your light fixture. If you see a lot of dust, you should buy a new filter.
4 Steps to Cleaning Your AC Equipment
Greenery, vegetation and bushes can obstruct your condensing system. This can restrict its airflow, impact its energy efficiency and affect your comfort. Here’s a way you can get your unit running smoothly again.
- Shut off the electrical current completely at the breaker or external lever.
- Get rid of greenery waste around the equipment. Once you’ve removed all the debris within a two-foot range, you can use a fine-bristled brush or vacuum to slowly remove dirt from the condenser fins. Bent fins can also affect effectiveness.
- Use a hose nozzle to carefully remove gunk off the fins from inside the system. Be careful to avoid getting water on the fan motor.
- Turn the power back on.
Low Refrigerant Levels
When air conditioning systems don’t have adequate refrigerant, they’ll struggle to remove heat and humidity from your space.
Here are a few indications that your unit is seeping refrigerant:
- It takes a long time to cool your home and you’re continually turning down the thermostat.
- Cooling coming through the vents isn’t as chilled as it should be.
- You’re noticing fizzing or burbling noises when cooling works.
- Your evaporator coil is icy because it’s having difficulty absorbing heat.
Think your unit is leaking refrigerant? You need a qualified heating and cooling service expert to repair the leak and replenish the right measurement of refrigerant in your system. Contact us at 478-202-3076 for support.
3. AC Not Blowing Enough Air
When it feels like you’re not having ample amounts of cold air, there’s likely a clog or detachment within your AC unit.
- The first place is checking your air filter. Replace it if it’s dirty.
- Make sure the vents are open across your residence.
- If you’re still not experiencing adequate chilly air, you should have your duct system checked by a specialist like Gillman Heating and Air. Your ductwork might need to be serviced or rejoined in tricky spots like your attic, basement or crawl space.