Is a MERV 10 Filter Too High for Your Needs?

Learn about the importance of choosing an appropriate air filter for your home's HVAC system. Understand why using an air cleaner with a MERV rating that is too high can damage your compressor, heat exchanger, and air conditioner coil.

Raymond Zephyr21/12/20221 minute 52, seconds read0 Comment

When it comes to air filters, the MERV rating system is used to measure the efficiency of the filter. A higher MERV rating means that the filter can capture more particles, but it also means that the filter is thicker and your HVAC system will have to work harder to circulate air throughout the house. So, is a MERV 10 filter too high for your needs?Generally, a filter with a higher MERV rating will reduce airflow. However, there are many other factors at play, such as the size of the filter and the type of fan motor in your HVAC system.

In particular, using an air cleaner with a MERV rating that is too high can damage the compressor, heat exchanger, and air conditioner coil. Low-efficiency filters are generally within MERV 1-4 and high-efficiency filters are MERV 13 and later. The MERV scale is not linear; the difference between a MERV 6 and a MERV 8 is almost double in the percentage of particles captured. Home Energy published an article by Dave Springer of Davis Energy Group at the time, on the pressure drop and energy use of several MERV filters.Sometimes particles such as pollen, pet dander, and fine dust can sneak through the filter unless you get one with a higher MERV rating.

MERV 8 air filters are very common because they are quite a complete option, so you might think that they are excellent in price but poor in performance.For example, if an air filter can capture at least 20% of E1 particles, 65% of E2 and 85% of E3 particles, it will obtain a MERV 11 rating. When you have a Merv filter 13 and higher, it's more similar to the material you'd find in an n95 dust mask.With the Filter King filter selection tool, you can mark exactly the size, thickness and MERV rating you're looking for. This way you can make sure that you get an air filter that is suitable for your needs without risking damage to your HVAC system.Ultimately, it's best to consult with a certified HVAC technician who can help you determine which filter is best for your oven or air controller. They will be able to assess your specific needs and recommend an appropriate filter.