7 Common Air Conditioning Issues to Watch Out For

air conditioner

When rooms are blocked off, and air movement throughout the house is disturbed, common central air conditioning problems emerge. If you have an air conditioner, you’ll need to know when to seek regular air conditioning service. 

And there’s a problem with the operation. Close your home’s windows and exterior doors as much as possible to isolate the room or a set of related rooms from the rest of your house. Read on to learn about home cooling for a list of typical air conditioner problems and what to look for.

When selecting an air conditioning service in Alabaster, AL, know what to ask for to maintain your air conditioner. Below are the reasons why you need the help of a professional:   

Insufficient Upkeep

The air conditioner ceases to work effectively if the filters and air conditioning coils become unclean, and the compressor or fans will possibly fail early.

Drainage Issues

Check the condensate drain when humid outdoors to ensure it’s not clogged and draining correctly. If your room air conditioner isn’t level, it cannot drain effectively.

Failure of Electric Controls

The compressor and fan controls can deteriorate, especially if the AC is turned on and off repeatedly. Electrical connections and contacts should be examined during a professional service call since corrosion of wire and terminals is an issue in many systems.

Leaks of Refrigerant

If your AC is short on refrigerant, it was installed incorrectly or leaks. If it leaks, merely adding more refrigerant will not solve the problem. 

A skilled technician should repair any leaks, then test the repair and charge the system with the proper quantity of refrigerant. 

Remember that your air conditioner’s performance and efficiency are optimal when the refrigerant charge meets the manufacturer’s specifications. Refrigerant leaks can also possibly be hazardous to the environment.

Sensor Issues

A thermostat sensor is situated beneath the control panel of room air conditioners and detects the air temperature entering the evaporator coil. The air conditioner may cycle continually or act erratically if the sensor is knocked out of place. Adjust the sensor’s location by carefully bending the wire that keeps it in place near the coil but not touching it.

The Air Conditioner Doesn’t Turn On

If your air conditioner isn’t turning on, check your thermostat batteries. If the batteries are dead, replace them. Look at the thermostat settings to determine if the cooling mode is on if the batteries are in good working order. 

Noises From the Air Conditioner

Depending on the failure, an air conditioner might emit various sounds. Below are some of the reasons why your air conditioner is making strange noises:

  • A refrigerant leak creates a hissing sound.
  • It might be a relay issue if you hear clicking sounds when turning on and off your air conditioner.
  • Noises like hammering or pounding indicate a blower or motor assembly problem.
  • The compressor or fan motor creates a screeching noise.
  • Faulty electrical components cause a buzzing sound.


Above are common air conditioning issues that homeowners may encounter before or during peak air conditioning. To avoid more severe air conditioner difficulties, you should look for an air conditioning repair in Alabaster, AL. 

Mainline Heating & Air provides dependable heating & air conditioning service and quality products to our Birmingham, Pelham, Alabaster, and Jefferson/Shelby county area customers. For emergency heating and ac service, call (205) 664-4751.

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