![]() ![]() MERV: Many whole-house filters list a minimum efficiency reporting value (MERV), developed by ASHRAE (formerly the American Society of Heating, Refrigerating and Air-Conditioning Engineers). Read on to learn more about our air filter tests and which type of filter is best for your forced-air heating and cooling system. For more information on the individual products that use filters, such as air purifiers, room air conditioners, and dehumidifiers, check out their dedicated buying guides. Here’s a rundown of the 12 filters you should be changing. Of course, air filters aren’t the only filters you should be monitoring and/or replacing to keep the air and water in your home clean. Any air filter that scores well in our tests is a good choice for clearing the air during smoke conditions. A good air filter can help with that, too. And by typically, we mean on days when no heavy smog or wildfire smoke has seeped into your home. That’s important because the concentration of air pollutants inside your home can be two to five times higher than concentrations typically found outdoors. The best air filters trap indoor pollutants such as dust, pet dander, and pollen, helping to clean the air in your home. If you’re getting low airflow, check the air filter-a clogged filter is one of the most common reasons. A dirty filter can restrict airflow, preventing the system from working like it’s supposed to, and that can eventually lead to an equipment breakdown. But it’s one small thing-the air filter-that keeps the entire central air system humming along. ![]() Heating and cooling probably constitutes a big part of your utility bill. ![]()
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