Your home’s HVAC filter is one of the best defenses against allergens and other contaminants getting into your airflow. HVAC filters include MERV ratings, and understanding them can help you pick the right filter for your Farmington, Arkansas, home. Here’s a quick rundown of MERV ratings and how they can affect your home:
What’s a MERV Rating?
MERV stands for Minimum Efficiency Reporting Value. It measures a filter’s ability to remove particles from the air, including superfine allergens and larger contaminants. To get their MERV ratings, filters undergo lab testing against a variety of airborne particles, ranging from pollen and tobacco to smoke and dust mites.
Choosing a Filter Rating
Ratings range from 1 to 16, with 16 being the highest and finest. Ratings are standardized, so a 7 from one brand is the same as a 7 from another. It’s a common misconception that you should always choose the filter with the highest number. High-rated filters are superfine and catch almost all contaminants. However, they’re also more difficult to pull air through, and some systems might not be strong enough to handle the extra resistance.
Your HVAC system’s user manual should indicate its ideal MERV range, or you can ask an HVAC professional. Also consider that the higher the rating, the higher the price.
Filters with different MERV ratings will require different maintenance. Lower-level MERV filters let lots of particles through. Because it takes longer for them to clog, you don’t have to change them as frequently. The opposite is true of higher-rated filters. Because they pull so much more out of the air, you must change them more regularly. If they get clogged, filters can reduce airflow and cause your utility bills to rise.
Our HVAC experts at Morrow Heat & Air, LLC can help you with all your filter concerns. Give us a call at (866) 821-7712 to set up a consultation today.
Image provided by Shutterstock