When is the Right Time to Replace Your MERV 11 Filter?

Learn when is the right time for replacing your MERV 11 filter and how often should you change it depending on its size and type.

When is the Right Time to Replace Your MERV 11 Filter?

The general consensus among HVAC professionals is that furnace filters should be replaced every 90 days or every three months. However, this depends on the thickness of the filter. Thicker filters have more room to accumulate dirt and dust, so they don't need to be changed as often.

Thomas & Galbraith Heating, Cooling and Plumbing

, of Ohio, recommends changing filters less than 2 inches thick every 30 to 90 days.

Three- or 4-inch filters can last 6 to 9 months, and filters up to 6 inches thick can be replaced once a year. A Honeywell oven filter will have the same filter replacement recommendations as standard filters. When it comes to MERV ratings, the oven owner's manual will specify the best rating for the oven. 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.

If you use a higher-efficiency filter (MERV 11 or higher), you may need to change it more often, as they can cause air restriction due to the larger surface area. Because filters with higher MERV ratings are denser, the oven must work harder to get air through them, and not all ovens have enough power to do so. It's important to remember that clogged air filters will cause the air conditioning system to work overtime because it will have to use more force to push the same amount of air through the filter. To ensure your system is running efficiently and effectively, it's essential to replace your oven filter regularly. The basic recommendation for replacing oven filters is every 3 or 4 months for MERV 8, every 6 months for MERV 10 and 11, and every year for MERV 16. However, there are other factors that should be taken into account when deciding when to change your home air filter. The general rule of thumb is that the oven filters should be changed at least once every 90 days. When replacing your oven filter, it's important to consider the size and type of filter you need.

If you're using a standard filter, you'll want to make sure it's rated for your specific oven model. If you're using a higher-efficiency filter, such as a MERV 11 or higher, you'll want to make sure your oven has enough power to handle it. Additionally, if you're using a thicker filter, you may need to replace it more often than recommended. Replacing your oven filter regularly is an important part of maintaining your HVAC system and ensuring it runs efficiently and effectively. By following the manufacturer's recommendations for filter replacement and taking into account factors such as size and type of filter, you can ensure your system is running at its best.