You should replace them approximately every 90 days, if you don't have allergies, but AC professionals generally recommend every 45 days for maximum efficiency. Be sure to replace them with the correct size and type of air filter. If your air conditioner is working properly, you can remove the filter and buy one that is identical to it. In general, most air filter manufacturers and HVAC companies recommend changing the air filter every 90 days or 3 months.
That may change depending on the location of your home (e.g. EJ. dry and dusty climates), if you have pets and the age of your system and equipment. If you have pets in the house, you should consider changing the filter every 60 days or 2 months, and for households with multiple pets or people with allergies or respiratory conditions, we recommend changing the filter every 20 to 45 days.
Vacation homes or vacant homes that don't have much use can usually wait to change filters every 9-12 months. The general consensus is that the more you use your home, the more you need to change the air filter. The only way to ensure how often you need to change your air filter 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 will need to re-evaluate if you have a new pet or if the outdoor air quality has been poor. How often you need to change your air filters depends on how often you use your home. For a little-used vacation home, you could get away with changing filters once a year. However, for a typical suburban home, you'll probably want to change filters at least every 90 days.
But that time frame changes depending on the additional circumstances listed below. A general rule of thumb for pleated air filters (such as those manufactured by FilterBuy) is to replace the filter every 90 days. As the filter traps more dirt, dust and allergens from the air, the efficiency of the filter decreases. Find out below if you should replace the filter more often.
The ideal is to change your air filter every three months, however, there are certain factors to consider when determining when to change an old filter. Some manufacturers recommend replacing air filters every 30 to 60 or 90 days, depending on the type of air filter. Filters with higher MERV ratings trap small particles more effectively than filters with lower MERV ratings. Households with a pet should generally replace filters after two months; those with more than one pet may need to replace the filter once a month.
A professional will be able to help you if there is a particular protocol for changing the air filter of a specific brand or how often an air filter needs to be changed. In addition, not replacing the air filter accordingly can cause the homeowner's energy bill to rise, as clogged filters cause the system to work harder when air circulates. The Minimum Efficiency Report Value (MERV) rating for an air filter measures how effectively the filter prevents dust and other contaminants from passing through the filter into the air stream. More cycles mean more filter passes and opportunities to trap contaminants, so filters typically fill faster during periods of heavy use.
Air filters typically have a MERV (Minimum Efficiency Report Value) that determines the type and size of contaminants against which the filter will act. If the dirty air filter is completely covered with dust and dirt, it is a good idea to change the filter even if it has not reached the end of its recommended life. While these factors affect the frequency of air filter replacement, you should visually inspect the filter every month for excessive particulate buildup. An air filter manufacturer will generally explain how often you should replace the air filter in their installation instructions.
At this time, it is recommended that air filters be replaced with quality replacements that can filter out common allergens, including pollen. .