The only way to be sure how often your air filter should be changed is to visually inspect it every month. After a few months, you'll get an idea of how quickly it gets dirty and if you need to re-evaluate the frequency of replacement. Generally, pleated air filters (such as those manufactured by FilterBuy) should be replaced every 90 days. However, there are certain factors to consider when determining when to change an old filter.
If you use less expensive fiberglass filters, it is recommended that you change them every 30 days. This is because the filter traps more dirt, dust, and allergens from the air, and its efficiency decreases over time. Additionally, if you live in a big city with high levels of pollutants such as smoke and dust, the air filter will clog at a much faster rate. To ensure that only clean air comes out of the air conditioning system, replace the air filter before it clogs so you can breathe better. Doing so will also allow more air to flow through the system with lower energy consumption, resulting in better circulation, cleaner air, and a lower electricity bill.
However, if the filter is not changed regularly, it will put unwanted pressure on your climate system, leading to poor air quality and poor air circulation. If you have allergies or an asthmatic or allergic person at home, it is recommended that you change the filter every 6 weeks to ensure optimal indoor air quality. Additionally, you should check for excess particulate matter buildup every month. The MERV rating is a scale that ranges from 1 to 20 and evaluates how well an air filter can remove particulates from the air. The HVAC air filter helps keep indoor air clean by trapping particles of mold, pollen, and other contaminants that move through the system. As a homeowner, it's important to understand how often your AC air filter should be changed in order to maintain optimal indoor air quality.
By inspecting your filter every month and replacing it according to the manufacturer's instructions or based on your environment's needs, you can ensure that your home's air conditioning system is running efficiently and effectively.
