--- title: "ENERGY EFFICIENCY TIP: Change HVAC Filters Regularly" description: "ENERGY EFFICIENCY TIP: Change HVAC Filters Regularly" image: https://blog.citizensenergygroup.com/hubfs/GettyImages-Energy%20Efficiency-Dec2020.jpg --- [![](https://blog.citizensenergygroup.com/hubfs/Engauge/engauge-logo.jpg)](https://blog.citizensenergygroup.com/engauge) [![](https://blog.citizensenergygroup.com/hubfs/Backgrounds/search-mobile.png)](https://www.citizensenergygroup.com/Search) # ENERGY EFFICIENCY TIP: Change HVAC Filters Regularly By Brett McClellan on 12/8/20 1:06 PM ![](https://blog.citizensenergygroup.com/hubfs/GettyImages-Energy%20Efficiency-Dec2020.jpg) Regular replacement of your heating, ventilation, and air conditioning (HVAC) unit’s filter is an essential part of maintenance that can ensure proper functioning of your system, improve its efficiency, increase its lifespan, and reduce your utility costs.  Filters remove contaminants from your home’s indoor air before you breathe it in and keeps the HVAC system’s ductwork clean.  The average HVAC system needs a new filter every three months. Several factors determine how often you should change the filter, including the type of filter you use, the size of your home, how often the HVAC unit is on, whether you have pets, and whether household members have allergies or other medical conditions.  It’s good practice to check your filter every month, especially if you have just installed a new system. Paying attention to changes in your home and in your city (such as construction and pollution) also will help you decide when to replace the filter. If you notice the furnace filter’s surface is gray and covered in buildup, you should change it. Other signs you may need to change your filter are more dust in the home or longer heating and cooling cycles.  A filter’s thickness can range from one to five inches. Generally, a thicker filter will last longer and be more efficient. Your system configuration will determine the thickness of the filter that you can use.  Pleated furnace filters are more efficient and last longer than simple fiberglass non-pleated filters. Pleated filters contain much more surface area to catch pollutants and contaminants and have smaller pores to capture smaller particles while still allowing full air flow.  ### Current Articles ### Recent Issues - [November 2019 (23)](https://blog.citizensenergygroup.com/engauge/archive/2019/11) - [November 2018 (21)](https://blog.citizensenergygroup.com/engauge/archive/2018/11) - [January 2021 (21)](https://blog.citizensenergygroup.com/engauge/archive/2021/01) - [October 2021 (21)](https://blog.citizensenergygroup.com/engauge/archive/2021/10) - [February 2020 (20)](https://blog.citizensenergygroup.com/engauge/archive/2020/02) - [December 2021 (20)](https://blog.citizensenergygroup.com/engauge/archive/2021/12) - [October 2018 (19)](https://blog.citizensenergygroup.com/engauge/archive/2018/10) - [January 2019 (19)](https://blog.citizensenergygroup.com/engauge/archive/2019/01) - [June 2020 (19)](https://blog.citizensenergygroup.com/engauge/archive/2020/06) - [August 2019 (18)](https://blog.citizensenergygroup.com/engauge/archive/2019/08) - [October 2019 (18)](https://blog.citizensenergygroup.com/engauge/archive/2019/10) - [April 2020 (18)](https://blog.citizensenergygroup.com/engauge/archive/2020/04) - [September 2022 (18)](https://blog.citizensenergygroup.com/engauge/archive/2022/09) - [July 2019 (17)](https://blog.citizensenergygroup.com/engauge/archive/2019/07) - [July 2020 (17)](https://blog.citizensenergygroup.com/engauge/archive/2020/07) - [June 2021 (17)](https://blog.citizensenergygroup.com/engauge/archive/2021/06) - [April 2019 (16)](https://blog.citizensenergygroup.com/engauge/archive/2019/04) - [January 2020 (16)](https://blog.citizensenergygroup.com/engauge/archive/2020/01) - [October 2020 (16)](https://blog.citizensenergygroup.com/engauge/archive/2020/10) - [December 2020 (16)](https://blog.citizensenergygroup.com/engauge/archive/2020/12) - [April 2021 (16)](https://blog.citizensenergygroup.com/engauge/archive/2021/04) - [July 2021 (16)](https://blog.citizensenergygroup.com/engauge/archive/2021/07) - [September 2020 (15)](https://blog.citizensenergygroup.com/engauge/archive/2020/09) - [March 2021 (15)](https://blog.citizensenergygroup.com/engauge/archive/2021/03) - [June 2022 (15)](https://blog.citizensenergygroup.com/engauge/archive/2022/06) - [February 2019 (14)](https://blog.citizensenergygroup.com/engauge/archive/2019/02) - [May 2019 (14)](https://blog.citizensenergygroup.com/engauge/archive/2019/05) - [May 2022 (14)](https://blog.citizensenergygroup.com/engauge/archive/2022/05) - [July 2022 (14)](https://blog.citizensenergygroup.com/engauge/archive/2022/07) - [October 2023 (13)](https://blog.citizensenergygroup.com/engauge/archive/2023/10) - [September 2021 (12)](https://blog.citizensenergygroup.com/engauge/archive/2021/09) - [March 2023 (12)](https://blog.citizensenergygroup.com/engauge/archive/2023/03) - [May 2023 (12)](https://blog.citizensenergygroup.com/engauge/archive/2023/05) - [June 2023 (12)](https://blog.citizensenergygroup.com/engauge/archive/2023/06) - [February 2022 (11)](https://blog.citizensenergygroup.com/engauge/archive/2022/02) - [August 2018 (10)](https://blog.citizensenergygroup.com/engauge/archive/2018/08) - [August 2023 (10)](https://blog.citizensenergygroup.com/engauge/archive/2023/08) - [March 2022 (9)](https://blog.citizensenergygroup.com/engauge/archive/2022/03) [![PDF Archives](https://no-cache.hubspot.com/cta/default/2545024/33b9e93c-8f43-4101-9b48-7e78154731f5.png)](https://cta-redirect.hubspot.com/cta/redirect/2545024/33b9e93c-8f43-4101-9b48-7e78154731f5) **Engauge** is published by Citizens Energy Group, Corporate Affairs Department, under the direction of Shannon Stahley, Director of Corporate and Public Affairs. 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