Does a merv 8 filter restrict airflow?

If you want you to at least clean your air and handle dust, mold, pollen and bacteria, then a Merv 8 will do the job. Usually, 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. Using an air filter with a MERV rating that is too high is as bad as using one that is too low.

Air filters with higher merv ratings may filter more, but the thickness of the filter material may restrict airflow. Restricted airflow can decrease comfort, increase energy use, and accelerate wear of HVAC components. In particular, using an air filter with a too high MERV rating can damage the compressor, heat exchanger, and air conditioner coil. A higher MERV rating means greater resistance, which means less airflow.

When researching HVAC systems, airflow will increase a lot. This is because it is very important to the performance and longevity of your oven or your air handler. Airflow is also the key to a comfortable home. A MERV rating is a good indicator of the effectiveness of an air filter in your central HVAC split system.

The higher the rating, the better the filter. As the MERV rating increases, fewer and fewer contaminants and dust pass through the filter, improving the quality of the incoming airflow. They also found that airflow in high-MERV filters dropped by 7% and 11% in the two HVAC systems compared to low-MERV filters. Similarly, the medium MERV filters also showed decreased airflow relative to the low MERV filters, this time 3% and 8% lower in both systems.

There are many considerations for choosing the best air filter. While a filter with a higher MERV rating might provide better filtration, it's important to recognize that a MERV that is too high could cost you more in terms of your heating and air conditioning system. The higher the MERV, the more restrictive the airflow through the device, causing the equipment to work harder. Your intention should be to achieve the right balance between air filtration levels, air flow and energy efficiency.

I would like more companies to push for the installation of Magnehelic pressure gauges and gauges, as well as simplistic information brochures explaining why jumping into a Merv 13 from a 50 micron filter can be problematic, or letting a filter double its depth due to dust accumulation (I saw it, like handyman, the oven still worked (type of). A MERV rating of 13 to 16 is considered hospital-level air quality, so your home is unlikely to need more than that. While ASHRAE recommends MERV 13 and 14, it is best to select a filter with the highest possible MERV rating for your specific HVAC system. Through this site and the trails that led me, I have learned that two Merv 11 filters can have the same filtering capacity, but one could allow more air to be transferred.

If you're concerned about the effects of breathing fine air particles, that's another reason to choose a Merv 11 air filter instead of a MERV 8 air filter. Generally speaking, anything under a merv 13 air filter should provide very efficient air purification in a house without affecting airflow. Since the MERV rating system is standard, it makes it a little easier to compare filters with different MERV ratings. If someone has an allergy or respiratory problem, use a MERV 11 air filter or even a MERV 13 air filter.

MERV was designed by the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) to evaluate the effectiveness of air filters. Oven filters trap dust, hair and other debris from the air before air enters the oven fan. The MERV rating tells you how efficient the air filter is at filtering particles of certain sizes. The problem with these filters is that the core is never completely cleaned, and over time, the accumulation of particles in the core reduces filtration efficiency and airflow.

They tested all filters with the same width and height (16″ x 25″) but depth ranged from 1″ to 4″. Consider all the considerations for air filters when buying a filter, make sure you understand MERV and know the best maintenance practices for your filters. . .

AnnMarie Noland
AnnMarie Noland

Amateur coffee expert. Certified twitter enthusiast. Wannabe web aficionado. Certified web trailblazer. Proud twitter buff.

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