Troubleshooting and doing your own AC repair in Florissant and St. Charles, Missouri, can appear like a lot of hassle.

There’s a better way. There are several quick remedies you can attempt by yourself that might help you get out of an AC service call.

When you’re having air conditioning issues, try this checklist before calling a heating and cooling repair professional like B & B Heating & Cooling.

Our experts are standing by at 314-325-7552 when you need expert service. We have emergency AC repair and work on most brands of central AC equipment.

If you want to get an up to date air conditioner, we also provide AC installation.

When you’re in contact with us, contemplate a yearly AC maintenance plan that may help you keep clear of future malfunctions. We can advise how often you need air conditioner service.

Ready to get started troubleshooting your system? Try our fast tips below. Many of these procedures don’t require any HVAC knowledge.

Air Conditioner Repair Checklist

1. AC Won’t Turn On

There can be several reasons why your air conditioner won’t cool: a triggered circuit breaker, inaccurate thermostat settings, a shut off switch or an overflowing condensate drain pan.

Blown Circuit Breaker

Your air conditioner won’t run when you have a tripped breaker.

To see if one has gotten overloaded, go to your house’s main electrical panel. You can locate this metallic box on the wall in the basement, garage or closet.

  • Ensure your hands and feet are free of moisture before you touch the panel or breakers.
  • Locate the breaker labeled “AC” and ensure it’s in the “on” spot. If it’s overloaded the lever will be in the middle of the panel or “off” position.
  • Steadily transfer the lever back to the “on” position. If it instantly flips again, don’t touch it and contact us at 314-325-7552. A switch that keeps flipping may signal your house has an electrical issue.

Incorrect Thermostat Settings

If your thermostat isn’t giving a sign to your AC to work, it won’t turn on.

The most important point is ensuring it’s on “cool” and not “heat.” Otherwise your air conditioning might not switch on. Or you might have. hot air coming from vents since the furnace is running instead.

If you have a traditional thermostat:

  • Replace the batteries if the readout is empty. If the readout is displaying jumbled characters, get a new thermostat.
  • Ensure the correct mode is displaying. If you can’t change it, override it by dropping the temperature and pushing the “hold” button. This will make your AC start if scheduling is not right.
  • Test setting the thermostat 5 degrees cooler than the space’s temperature. Your AC won’t work if the thermostat matches the room’s temperature.

Once your thermostat is set accurately, you should receive refreshing air quickly.

If you have a smart thermostat, such as one manufactured by Nest, Ecobee, Lux, Honeywell or Bosch, check the manufacturer’s website for help. If you’re still having problems, reach us at 314-325-7552 for assistance.

Shut-Off Switch

Your air conditioner probably has a shut-down switch near its condenser. This lever is generally in a metal box mounted on your home. If your air conditioner has recently been serviced, the lever may have unintentionally been left in the “off” location.

Overflowing Condensate Drain Pan

Condensate drain pans hold the surplus liquid your system takes out of the air. This pan can be positioned either below or inside your furnace or air handler.

When there’s a clog or blocked drain, water can build up and trigger a safety control to switch off your unit.

If your pan involves a PVC pipe or drain, you can drain the surplus liquid with a special pan-cleaning tab. You can purchase these tabs at a home improvement or hardware store.

If your pan includes a pump, look for the float switch. If the mechanism is “up” and there’s moisture in the pan, you could need to get a new pump. Reach us at 314-325-7552 for assistance.

2. AC Blows Warm Air

If your equipment is on but not delivering cold air, its airflow could be obstructed. Or it might not have adequate refrigerant.

Obstructed Airflow

Your unit’s airflow can be reduced by a blocked air filter or dirty condenser.

How to Change Your Air Filter

A dirty filter can cause numerous problems, like:

  • Limited cooling
  • Icy refrigerant lines or evaporator coil
  • Uneven cooling
  • Higher electricity bills
  • Making your system wear out more quickly

We recommend replacing flat filters monthly, and creased filters every three months.

If you aren’t sure when you last replaced yours, switch off your system completely and pull out the filter. You can locate the filter in your furnace or air pump’s blower compartment. It might also be found in a connected filter case or wall-mounted return air grille.

Tilt the filter up to your light fixture. If you can’t see through it you need to replace it.

How to Clean Your Air Conditioning Equipment

Brush, grass and shrubbery can block your condensing unit. This can limit its airflow, lower its energy efficiency and affect your comfort. Here’s how you can get your equipment working well again.

  1. Turn off power totally at the breaker or outdoor device.
  2. Get rid of greenery rubbish around the unit. Once you’ve removed all the refuse within a two-foot range, you can use a paint brush or vacuum to slowly remove dirt from the unit’s fins. Bent fins can also hurt capability, so you can attempt to adjust them with a dinner knife.
  3. Use a hose nozzle to gingerly clean the fins from inside the equipment. Be careful to avoid getting water on the fan motor.
  4. Install the top again and turn on the power.

Low Refrigerant Levels

When cooling equipment doesn’t have enough refrigerant, they’ll struggle to remove heat and humidity from your rooms.

Here are a few symptoms that your unit is losing refrigerant:

  1. It takes a long time to cool your space and you’re regularly lowering the thermostat.
  2. Air conditioning coming through the registers isn’t as chilled as it should be.
  3. You’re experiencing whistling or burbling racket when the air conditioning runs.
  4. Your evaporator coil is frozen as a result of having difficulty taking on humidity.

Worried your equipment is leaking refrigerant? You need a authorized heating and cooling service expert to take care of the leak and restore the proper amount of refrigerant in your unit. Call us at 314-325-7552 for help.

3. AC Not Blowing Enough Air

When it seems like you’re not receiving adequate amounts of cold air, there’s probably a blockage or detachment within your air conditioning system.

  • The first stage is looking at your air filter. Get a new one if it’s filthy.
  • Then make sure the vents are clear across your residence.
  • If you’re still not getting ample chilled air, you should have your duct system checked by a expert like B & B Heating & Cooling. Your ductwork may need to be serviced or rejoined in tricky locations like your attic, basement or crawl space.

Request Pro Air Conditioner Repair Now

When you require air conditioning service quickly, contact the HVAC repair experts at B & B Heating & Cooling at 314-325-7552. We’ll quickly identify the problem when your equipment won’t work or provide enough chilled air.

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