The only way to be sure how often the air filter needs to be changed is to perform a visual inspection of the filter every month. After a few months, you'll get an idea of how quickly it gets dirty. You'll need to re-evaluate if you're having a new pet or if the outside air quality has been poor. Air filters should be changed every 90 days on average.
An HVAC filter will only last one to three months on average. Which means you should keep track of the date you installed them. If you wait too long to change the filter, indoor air quality will be affected. The general recommendation on how often air filters should be changed can range from every 30 days to every year.
Two of the factors that determine the lifespan of a filter are the type and quality of the filter being used. Estimating how often an air filter should be changed can be complicated because of the many different variables involved. During these months, pollutants in your home may increase, but the air filter doesn't catch them. If you have allergies, you can reduce your symptoms by using a high-quality air filter and adopting a more frequent replacement program.
While a filter with a higher MERV rating should last longer, it can also restrict airflow in your home. If you allow dandruff, dust, and other contaminants to build up in the air filter and reach your home, it can harm you. When the air filter is clogged, the HVAC unit requires a lot of extra work to circulate fresh air throughout the house; the additional work requires more electricity. Studies have shown that the air in your home can be between two and five times more polluted than outdoor air.
Consider the factors mentioned above to determine a replacement program and decide what type and quality of filter you should use. If you don't want your air filter to introduce more dirt into your home than before, we recommend that you replace it every 30 days or reasonably, as indicated above. The lifespan and health of your HVAC will thank you for complying with the proper guidelines on when you should change your air filter. Another 12 particles are used to determine which air filters are best for trapping different air pollutants.
During periods of the year when HVAC equipment is operating frequently, air circulates more times around the house compared to times when the HVAC system is used sparingly. To help protect the life of the air conditioner and improve comfort, it's important to clean or replace the HVAC filter regularly. When the air filter is clean, you don't need to inhale particles or other different contaminants. The HVAC air filter helps keep indoor air clean by trapping mold, pollen, and other contaminants that move through the system.
In smaller homes, the HVAC system needs to move less air, which may mean less frequent replacement of air filters.