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How To Troubleshoot And Fix An AC Unit That Is Not Cooling

AC Unit

As the weather starts to change, you may have noticed that your AC unit is not as cold as it used to be. You are not alone, and many people are reporting this issue. While there are many possible explanations, here are five reasons why your AC might not be as cold as it used to be.

Poor Airflow

Poor airflow makes ac not as cold as it used to be, making your house feel stuffy and hot. It can also increase your energy bills because the AC has to work harder to cool your home. You can do a few things to improve airflow in your home and make your AC more effective.

First, check the vents and make sure they are open and unobstructed. If you have furniture or curtains blocking the vents, move them so that air can flow freely. Second, change your AC filter regularly, and a clogged filter will restrict airflow and make it harder for your AC to do its job. Finally, ensure no gaps around your doors or windows where air can escape. Sealing these gaps will improve airflow and make your home more comfortable.

Clogged Air Filter

A clogged air filter can make a big difference in the efficiency of your air conditioner. A clean filter allows air to flow freely through the system, while a clogged filter restricts airflow and makes the system work harder to cool your home. In addition, a clogged filter can cause the evaporator coil to freeze, leading to severe damage. If you notice that your air conditioner is not as cold as it used to be, or if it seems to be working harder than usual, check the air filter and replace it if necessary. Keeping your air conditioner’s air filter clean can help it run more efficiently and prevent costly repairs.


If your thermostat is not working correctly, it can cause your AC unit to cycle on and off more frequently than usual. It can lead to reduced cooling power and make it challenging to maintain a consistent temperature in your home. In some cases, a faulty thermostat may also cause your AC unit to run for more extended periods than necessary, leading to higher energy bills. If you suspect your thermostat is not working correctly, contact a qualified HVAC technician for diagnosis and repair.

Refrigerant Leak

A refrigerant leak can cause your AC unit to lose its cooling power. The refrigerant helps to cool the air as it circulates through the unit, so the air will not be as cold when there is a leak. You may also notice that your AC unit is running more often than it used to, as it tries to compensate for the loss of refrigerant. If you suspect that your AC unit has a refrigerant leak, it is essential to have it serviced by a qualified technician. Otherwise, the problem will only worsen and could significantly damage your AC unit.

Lack Of Maintenance

As any HVAC technician will tell you, regular maintenance is essential to maintain your air conditioner properly. Over time, dirt and dust can build up on the coils, preventing them from absorbing heat effectively. In addition, the freon levels may need to be topped off, and the filter may need to be replaced. If these things are not done regularly, your AC unit will not be able to function as efficiently as it did when it was first installed. As a result, your home will not be as fantastic as it could be, and your energy bills will be higher than they should be, so if you want to keep your home comfortable and save money, regular maintenance for your AC unit.

If your air conditioner is not as cold as it used to be, one of the five reasons above may be the culprit. Fortunately, most problems can be easily fixed if you know what to look for. So before you call in a repair technician, troubleshoot the problem yourself for a few minutes. And if all else fails, do not hesitate to contact a technician.

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