How Often Should Merv Filters Be Changed? A Comprehensive Guide

Learn how often Merv filters should be changed based on their ratings and other factors such as location of home and pet ownership.

How Often Should Merv Filters Be Changed? A Comprehensive Guide

Your oven owner's manual will specify the best MERV rating for your oven and, in general, filters with a MERV rating of 6 to 9 should be changed every 90 days, while those with a MERV rating of 10 to 12 should be changed every 60 days. Air filters with a MERV 11 rating or higher can typically take three to six months before they are replaced. Specifically, for high MERV ratings and greater thickness, these filters easily require only two filter changes per year. Filter types are determined by their MERV rating.

A MERV rating, the minimum value of efficiency reports, measures the effectiveness of filtration. The higher the MERV ratings, the more effective the filter will be at not allowing particles in the air to pass through it. We offer MERV 8, 10, 11 and 16 filters for sale in our office and can also place special orders for unique sizes. The MERV rating also generally determines how often the oven filter needs to be changed.You should have a clean filter, MERV 8 filters should be changed every 3-4 months, MERV 10% 26 11 filters every 6 months and it's a good idea to change MERV 16 filters every year.

In general, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days or 3 months. That may change depending on the location of your home (e.g. e.g. 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 20-45 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.And then there's the question of the type of filter. If you've been following this blog for the past year, you know that I'm a fan of high MERV filters that are thicker (at least two inches) because they do a much better job cleaning the air. If you want good indoor air quality (IAQ), you need better filtration and that means a MERV-13 filter.

But high-MERV filters are also more expensive, so changing them every 30 days isn't as good for your pocket.By removing the air filter from the air handler, if you hold it close to a light source, you can see if the filter is dirty or clogged; if you can't see the light through the filter, it's definitely time to change it.To ensure your family is safe from germs and other potentially harmful air particles, you should replace the filter more often. As air moves through a building's HVAC system, air filters trap and pick up large and small particles, such as dust, allergens and microorganisms. All the air that circulates through your HVAC system, whether for heating or cooling your home, will eventually pass through the air filter. Air filters typically have a MERV (Minimum Efficiency Report Value) that determines the type and size of contaminants against which the filter will operate.If you answer yes to this question, you'll want to change your filter every 6 weeks to maintain the best indoor air quality.

If you're a pet owner, you'll want to change your air filter every 2 months, especially when winter turns to spring and summer turns to fall. So, make sure you have the right type of air filter for your air handler, and if you've recently done work around your home or own a pet, follow these simple steps to improve your oven's air filter performance.With this in mind, to ensure the cleanest air filter, you need to consider all of the factors listed above to determine the best filtration timeline for your space.But what happens if you let that time go by a little? Before we talk about WHEN the air filter should be changed, let's start with the WHY. As a general rule, you'll want to replace your home's pleated air filters and heating filters every 90 days. A new air filter in your home is like a new one in your car; it improves the air in your home, keeps the oven in perfect condition and helps control dust in the air.

If you use the air filter for less than five hours a day, you can extend its life to a few more months.

Raymond Zephyr
Raymond Zephyr

Subtly charming pop culture nerd. Wannabe food guru. Wannabe beer junkie. Hardcore zombie evangelist. Freelance zombie practitioner.

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