Please ensure Javascript is enabled for purposes ofwebsite accessibility

F.H. Furr answers: When should you change your air filter?

Screen Shot 2021-01-13 at 11.38.20 AM.png
Do you know how often you should change your HVAC system's air filter?

F.H. Furr Plumbing, Heating, Air Conditioning, & Electrical joined ABC7 to share the answer to a question they received from one of their customers: How often should you change your HVAC system's air filter?

Most heating and air conditioning systems use a standard one-inch filter, but your system might instead have a four to five-inch filter, depending on the filtration efficiency. For most standard HVAC filters, a good rule of thumb is to replace them every 60-90 days. Some homeowners who suffer from allergies or other health concerns may choose to change their filters monthly. If your system uses a thicker five-inch filter, these can last up to twelve months. But you will still need to check these larger filters regularly for best results.

Regularly checking your filter will keep your system operating smoothly and efficiently. A good way to determine if your filter needs to be changed is to take it out and look towards a light source to see if you can see through it. If you can't see light through it on the other side, your filter needs replacing.

Regular check-ups also help your system run properly. When dust and dirt build up in your filter, it can create problems and shorten your system's life. Keeping your filter clean is essential, because if the filter is clogged, dirt is able to get past, creating buildup on your blower and coil. Cleaning these components can be quite expensive should you require the help of a technician.

Another important reason to change your filter is that many new units have safety switches to ensure that no significant issues occur. Those safety switches can cause the unit to stop working due to a contaminated filter. The indoor air quality experts at F.H. Furr Plumbing, Heating, Air Conditioning, & Electrical work to ensure that their customers get the best service and air quality for optimum health and comfort.

For more information and other tips, be sure to visit