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Air conditioner maintenance checklist 

The air conditioner is a device that cools or heats the air inside your home. It can be used to control the temperature in rooms and also helps you save energy by lowering the temperature of the room. Your air conditioner will need regularly checking by yourself so that any issues or problems can be quickly identified. Then, if needed, the services of a professional like those at this AC repair in Crofton company can be employed to carry out all necessary repair work. A properly maintained air conditioner will help you keep your home comfortable throughout the year. This article provides information on some of the air conditioner maintenance checklists:

1) Check for leaks

This is one of the air conditioner maintenance checklists, which should always be performed before using it. If there are any leaks, then this may cause damage to the unit. So make sure that all the faucets and pipes are tightly closed. This will ensure that no water enters the system. For example, if you have an AC installed in your bathroom, then check for leakages at the sink, shower, toilet etc. Leaks can also occur when the AC drain line clog gets backed up with dust, dirt, and lint. When this happens, the drain pan fills up causing water to leak around the AC unit. If you do find a leak, a professional company, such as R.E. Long Services can show you how to unclog an AC drain line and do this on your behalf.

2) Clean filter

The filter is located near the compressor. Make sure that it is clean and free from dust. Also, make sure that the filter has been changed after every six months. You can use compressed air to clean the filter. In case the filter gets clogged, it may not allow the proper flow of air through the system. This may lead to overheating of the unit and cause damages to the unit.

3) Change the refrigerant level

The refrigerant level must be checked regularly. The refrigerant level is measured in terms of R-134a. You can find the refrigerant level by opening the drain valve. In case the level is low, then add more refrigerant. If the level is high, then remove some refrigerant. During air conditioner installation, the technician usually fills up the tank with refrigerant. But sometimes, the technicians do not fill up the tank completely. So make sure that the tank is filled with enough refrigerant.

4) Check for condensation

Condensation occurs when the evaporator coil becomes too cold. This causes moisture to form on the coils. When this happens, it may drip down onto the floor. So make sure that the fan is running during the winter season. Also, turn off the power supply switch while checking for condensation.

5) Inspect the electrical connections

If you realize that the wires are loose, then tighten them. Loose wires may cause short-circuiting. So make sure that they are tight. Normally, the wires are connected to the terminals. But sometimes, the terminals get disconnected. So make sure that both the terminals and the wire are connected well. For instance, if you notice that the terminal has become loose, then tighten it.

6) Replace the thermostat

Check the thermostat once a month. If it does not work properly, replace it immediately. It is important to maintain the set point of the thermostat as per the room’s requirement. For example, if the room requires cooling, then set the thermostat accordingly. For instance, if the room needs to be cooled, then set the thermostat to 20 degrees. If the room requires heating, then set the thermoset to 60 degrees.

7) Check the ductwork

You should make sure that the ductwork is clean and free from debris by performing a HVAC service on a periodical basis. Dirt particles may block the airflow and increase the chances of getting mould growth. When it comes to ductwork, make sure that the vents are clear and open. Otherwise, it may affect the performance of the air conditioner.


Air conditioning systems require regular maintenance. It is important to perform these checks regularly. These checks help us to prevent potential problems. By performing these checks regularly, we can save money and avoid expensive repairs.