Air filters are a vital component of your HVAC system. They help your system run efficiently, help boost our indoor air quality and protects your HVAC system from getting damaged. There are two different types of filter types called MERV and HEPA.
For starters, MERV stands for Minimum Efficiency Reporting Value. It measures how effective the air filter is at capturing particles. MERV ratings are used on a scale of 1-20. The lower the rating, the less particles the filter will catch from the air.
If you have a higher MERV rating, it will catch more particles, but will restrict the amount of airflow. Deciding which MERV rating is best for you will depend on the kind of air quality you prefer and how much particles you want the filter to catch vs. how much airflow you want. If you prioritize energy efficiency, a lower MERV rating will work. Because it prevents your system from capturing as many particles and allows more airflow, you will need to replace it more often.
MERV filters are the most common filters used in homes. Whenever you are deciding on a higher MERV rating for your system, check with an HVAC professional to make sure that your furnace can adjust properly to the reduced amount of airflow.
So, what are HEPA filters used for? These filters have the highest MERV ratings and they are so efficient that they are used in hospitals and medical facilities. HEPA stands for high efficiency particulate air. These kinds of filters are usually found in air purifiers and are great for people who suffer from allergies, asthma or, have serious health concerns.
Choosing the right filter has a lot of components to think about. If you need help deciding what filter is best for your home, contact an HVAC professional today at 515-965-7272.