8 Reasons Why Your AC Isn't Cooling Your Room Fully & What to Do About it

June 24, 2022

Most people take their air conditioners for granted until they stop working properly. It can be a major annoyance when your AC isn't cooling your room fully. You may not be able to sleep at night and might act irritated during the day due to lack of sleep. To ensure your AC works fine when you need it the most, here are eight reasons why your AC might not be performing as well as it should and what you can do about it.

The AC Is Not the Right Size

If your AC is too small, it will have to work harder to cool your room and may not be able to do so effectively. On the other hand, if it's too big, it will cool the room quickly but won't remove enough humidity, leaving you feeling cold and clammy. To determine the right size for your room, consider the square footage and ceiling height when purchasing.

Thermostat Is Not Set Properly

Your AC will only cool your room to the temperature you set on the thermostat. If it is set too high, the AC will run continuously without ever reaching the set temperature. On the other hand, if it is set too low, the AC will turn on and off frequently, wasting energy and not cooling your room effectively.

The Air Filter Is Dirty

Over time, the air filter in your AC can become clogged with dust and dirt. This prevents proper airflow and makes the AC work harder to cool your room. As a result, it doesn't work as efficiently as it should, and your room may not reach the desired temperature. To clean or replace the filter, consult your AC's manual. You can also call for a heating and air conditioner service to get professional assistance.

The Evaporator Coil Is Frozen

The evaporator coil is responsible for absorbing heat from the air in your room. If the coil is frozen, it can't do its job properly, and your AC will be less effective in cooling your room. To thaw the coil, turn off the AC and set the thermostat to fan only. Once the ice has melted, you can turn on the AC again.

The Condenser Coil Is Dirty

The condenser coil is responsible for releasing heat from the refrigerant. If the coil is dirty, it won't be able to release heat properly, and your AC will have to work harder to cool your room. To clean the coil, consult your AC's manual or call a professional.

The Refrigerant Is Leaking

The refrigerant is what helps the AC to cool the air. If there is a leak, the refrigerant will escape, and the AC won't be able to cool the air effectively. To address this, you need to call a professional to repair the leak and recharge the refrigerant.

The Ducts Are Leaking

If the ducts that transport cooled air from the AC to your room are leaking, it can cause your AC to work harder and not be as effective in cooling your room. To fix this, you will need to call a professional to seal the leaks.

The Outdoor Unit Is Dirty

The outdoor unit of your AC contains the condenser coil. If the unit is dirty, it can cause the AC to work harder and be less effective in cooling your room. To clean the unit, consult your AC's manual or call a professional.

Final Word

If you find that your AC isn't cooling your room fully, there could be any one of these eight reasons behind it. By troubleshooting and addressing the issue, you can ensure that your AC works properly when you need it the most.


Carlos Diaz
I believe in making the impossible possible because there’s no fun in giving up. Travel, design, fashion and current trends in the field of industrial construction are topics that I enjoy writing about.

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