In general, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days or 3 months. This may change depending on the location of your home (e.g. dry and dusty climates), if you have pets, and the age of your system and equipment. If you have pets in your home, 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.
Usually, vacation homes or vacant homes that don't have much use can expect 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. 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 need to keep track of the date you installed them. If you wait too long to change the filter, indoor air quality will suffer. 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. According to the Allergy and Asthma Foundation of America (AAFA), “indoor air quality is just as important as outdoor air quality. A collapsed air filter can get stuck in the fan or create a large space, causing air to float around the filter without leaking out. You can hear it: Your HVAC technician is giving you lessons on how to make sure you change your air filter.
If you live in a “smaller house,” your air conditioners and ovens need to pump less air for the same amount of temperature change, which could mean fewer filter changes. There is no strict guideline, but if the filter shows only a subtle layer of dirt under which the filter material is still visible, the filter is in good working order. But what happens if you let that time go by a little? Before we talk about WHEN you should change your air filter, let's start with the WHY. To keep air quality under control and your home clean, you'll want to replace the filter with a minimum interval of 2 to 3 months.
If you have poor outdoor air quality or pets indoors, you'll need to replace your air filter more often. We expect drivers in most cases to spend more than a year, at least, and probably more than two years between air filter changes, depending on conditions and mileage. Some manufacturers recommend replacing air filters every 30 to 60 or 90 days, depending on the type of air filter. With air conditioners, replace the filter every 30 days with cheaper fiberglass filters to avoid higher energy bills.
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. It's important to note that there are high-efficiency filters that are designed to filter out small bacterial, mold, and fungal particles, but your standard MERV 8-11 filters will simply block out larger particles of dust, dirt %26 hair.
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