For your AC unit to function effectively, you need to carry out some maintenance regularly. This should be done at scheduled times irrespective of whether the unit is working effectively or not. When done right, it can end up saving you a lot of money that would otherwise go to repairs.
Below are a few maintenance tips for homeowners
Cleaning and Replacement Air Filters
Over time, the filter gets filled with dirt, dust, and allergen particles, which significantly decreases the airflow. This causes the system to work a lot 
harder than it is supposed to. It may also cause the air flowing through the AC system to become dusty and dirty such that it will trigger asthma and allergy symptoms. You should thus ensure that you replace the filter of your AC, or clean it if it is the reusable type, regularly. During the high-use seasons, this should be done at least once every month. The location of the filter will vary depending on the make and model of your air conditioning unit.
Check Components and Wiring
It is essential that you switch off the power supply to the AC before you start working on it. After this, you can check for signs of overheating in the condensing unit, including melted wires or blackened wires. Also, ensure that all electrical connections are as tight as they should be. For the contactor switch, it should be replaced if you notice excessive pitting. In case you see any problem with the wiring or components, you should get in touch with a professional to help you with the repairs.
Clean the Coils
If the coils appear to be dusty or dirty, you should clean them. This is because a layer of dirt or dust on the coils reduces the efficiency in which warm air is cooled. When cleaning, make sure you do not get water on any electrical component and ensure everything is dry before you switch the AC unit back on.
Clear the Airflow Path
For effective cooling of your home, good airflow is essential. You should thus ensure that nothing is blocking the vents, such as clothes, books, furniture, or any other item.
