Avoid Costly Mistakes When Replacing Your AC Filter

Maintaining your air conditioner is essential for keeping it running efficiently and avoiding costly repairs. One of the most important tasks is replacing the filter regularly, but mistakes can be made during this process that can lead to energy inefficiency and other issues. To help you avoid these common errors, here are some tips for replacing your air conditioner filter.

Know the Right Size

The first step in replacing your AC filter is knowing the right size for your system. The size of the filter needed will depend on the model and type of system you have, so it's important to measure carefully before purchasing a new one. If you purchase a filter that is too large or too small, it won't fit properly and could cause damage to your AC unit.

Change It Regularly

It's also important to remember to change your air conditioner filter regularly. Depending on how often you use it, you should replace your filter every one to three months. When you don't replace it regularly, dirt and debris can build up, causing your system to run inefficiently and possibly even break down.

Choose the Right Type

When buying a replacement filter, make sure you choose the right type for your needs. There are many different types of air conditioner filters available including disposable fiberglass filters, pleated filters, electrostatic filters, and HEPA filters. Each type has its own benefits and drawbacks so do some research before making a decision.

Install It Properly

Finally, when installing a new filter, make sure you do so correctly. Many people make mistakes when installing their new filters, which can result in air leaks or other issues. Be sure to follow all manufacturer instructions carefully when installing a new filter in your AC unit.


Replacing an air conditioner filter is an easy task if done correctly. However, mistakes can be made that can lead to costly repairs and energy inefficiency. To avoid these common errors, make sure you know the right size for your system, replace your filter regularly, choose the right type of filter for your needs, and install it correctly. By taking these steps, you can ensure that your AC unit runs efficiently and effectively.