9 Common AC Maintenance Mistakes You Should Avoid

If you have an air conditioner, it’s essential to keep it well-maintained. Doing so will prolong its lifespan and keep your home comfortable all summer. However, some common mistakes people make when it comes to AC maintenance. In this blog post, we’ll be discussing nine of them. By avoiding these mistakes, you can keep your air conditioner in tip-top shape for years to come.

1. Not Changing the Filter Regularly 

One of the most important things you can do for your air conditioner is to change the filter regularly. Most filters should be changed every three months. However, if you have pets or live in a dusty area, you may need to change the filter more often. Not changing the filter regularly can cause several problems, including decreased airflow and energy consumption.

2. Neglecting to Inspect and Clean the Condenser coils 

The condenser coils are responsible for dissipating heat from the refrigerant. Over time, they can become dirty and covered in dust, which can impede their ability to do their job effectively. As a result, your air conditioner will have to work harder to cool your home, leading to higher energy bills and shortened lifespan. To avoid this, inspect and clean the condenser coils at least once a year.

3. Leaving the Thermostat Set to One Temperature 

Leaving the thermostat set to one temperature is a mistake because it doesn’t allow your air conditioner to rest. It will help if you give your AC a break every so often by raising the temperature for an hour or two. This will help prolong its lifespan while also saving you money on your energy bills.

4. Failing to Schedule Annual Maintenance 

Air conditioners need annual maintenance to run correctly like any other mechanical device. A technician will inspect the unit and clean any parts required during maintenance. They may also spot potential problems and repair the AC before they become significant issues. Scheduling annual maintenance is essential to keeping your air conditioner running smoothly for years to come.

5. Not Cleaning the Outdoor Unit 

The outdoor unit of your AC system is exposed to all sorts of elements, which is why it’s so important to keep it clean. Over time, dust, pollen, and other debris can build up and cause corrosion. Be sure to periodically check and clean your outdoor unit to avoid any problems.

6. Running the Unit 24/7 

During the summer months, leaving your AC running all day and night is tempting. However, this can lead to more problems than it solves. It’s best to keep your AC unit on a regular schedule so that it doesn’t overwork and break down prematurely.

7. Ignoring Strange Noises 

If you start hearing strange noises from your AC unit, don’t ignore them! These could be signs of a severe problem that will only worsen if left unchecked. Be sure to contact a professional as soon as possible so that they can diagnose and fix the issue before it causes further damage.

8. Putting Furniture or Other Objects in Front of the Air Conditioner 

It’s common for people to put furniture or other objects in front of their air conditioners, especially during the summer months. However, this is not a good idea as it can block airflow and prevent your AC from working correctly. Additionally, putting furniture in front of your AC unit can cause it to tip over, leading to severe injuries. If you must put something in front of your AC unit, be sure there are at least two feet of clearance on all sides.

9. DIY Repairs 

When something goes wrong with your AC unit, it’s tempting to try and fix it yourself rather than call a professional (especially if you’re handy around the house). However, you’ll do more harm than good unless you’re a trained AC technician. Leave repairs to the professionals, so you don’t void your warranty or cause further damage. 


When it comes to maintaining your air conditioner, there are a few common mistakes that many homeowners make without even realizing it. By being aware of these mistakes and taking steps to avoid them, you can save yourself a lot of time, money, and hassle in the long run. Contact us today if you have any questions about AC maintenance or need assistance with a repair. Our team of expert technicians would be happy to help.

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