It's always a smart idea to be conscious of the most frequent problems that occur with your air conditioner. Here are the top three reasons homeowners seek air conditioner repair: 

1. A blocked or unclean filter is perhaps the most common reason air conditioners don't perform correctly. Follow the manufacturer's recommendations for changing your air filter. Some are changed monthly, some every three months, and some are reusable and should be cleaned as needed.
2. Another simple and common problem is a faulty or incorrectly placed thermostat. Check that your thermostat (which regulates the degree of cooling in your house) is switched on, that it is not impacted by sunshine, and that it is set to the right temperature. If the difficulties persist, there might be another concern.
3. Another prevalent issue is refrigerant leaks. When the coolant in the air conditioner begins to leak, the device will not function properly, and the temperature will vary. Because the location of the leak affects the cost of the repair, it is recommended that this be checked yearly by a skilled AC specialist.

Although every situation is unique, and every homeowner has a different perception of when and how often to do preventative maintenance, it's safe to say that with proper upkeep and care, you can expect a new high-efficiency air conditioning system to provide 15 to 20 years of cooling.

The most common reason air conditioners cease operating properly is a dirty or blocked air filter. A clogged one might obstruct airflow and impair cooling in your home. In more severe circumstances, it might cause the system to entirely shut down.

If your thermostat is set to cool and you still don't get cool air, look for your system's air filter, switch off the system, remove the filter, and examine. If, after ensuring that you have a clean air filter, your central air conditioner still does not chill your home, you will need to go a bit further to find the source of the problem.