Why is my air conditioning unit not cooling the air? There are several reasons why an air conditioner would stop cooling.
1. Thermostat is set too high
Make sure the thermostat on the air conditioner is in relaxed mode and not heat. If it’s currently in heating, move it to a cool way. This will prevent the unit from turning off automatically when it reaches your desired temperature. It could also be that you need to give it more time to get that temperature if there were extreme weather conditions recently or you just installed a new central AC system for your home.
2. Dirty Air Filter
Cleaning of furnace filters should be done at least once every three months; however, depending on the rate of use (how many hours it runs each day), the filters may need to be cleaned more often. If pets in your household shed frequently, this will also contribute to the inside air filter accumulating debris at a much quicker rate. Be sure to check and clean or replace your filters regularly. Dirty filters do not allow an air conditioner to cool properly because they block proper airflow.
3. Leakage of refrigerant
If you installed an AC system yourself or had someone else install it for you, there is always the possibility that the wrong refrigerant was used when installing your AC unit. Only purchase R-410A refrigerant if replacing standard R-22 units, which were common before 2010 since the newer refrigerant can handle higher temperatures.
4. Drainage problem
The lines that drain water from your AC unit mustn’t be clogged up with debris. This could cause lower cooling efficiency and increase the chance of mold growth inside the drainage piping, which will only exacerbate your lack of airflow while using your AC system. The best way to resolve this issue is by getting your outside condensing unit inspected by a professional since it’s difficult to diagnose if there are indeed drainage issues when you are only viewing the unit from inside your home or business.
5. Bad thermostat
A lousy thermostat in an air conditioning system could prevent the compressor from running; thus, cooling for all of your rooms in your home or business will not occur. If you can hear the fan blowing but there is no compressor action, then your thermostat may be wrong and need to be replaced.
6. Low voltage
If your AC system has low voltage, this could prevent it from working at all. Do you notice that some electrical appliances in your house lose power more frequently than others? Does it happen more often when the weather is warm and humid? What do you think might be causing this problem with the electricity in your home or business?
Anytime we have a surge of humidity in conjunction with very high outside temperatures, we will see higher incidents of lower output voltages that affect everything that runs on current in your building, including air conditioning units. If you go out to your air conditioning unit during this time of year and notice that it is not running, get familiar with these six reasons why your AC system might be cooling less than usual.