You've heard the term MERV rating before, but what is it exactly and how does it affect your dust collector?
What is a MERV Rating?
The term MERV is actually an acronym and stands for "Minimum Efficiency Reporting Value". In simpler terms, this rating answers the question "How effective is my filter media". MERV ratings are assigned numerical values based on the how efficient they are at capturing dust particles. The numerical values are typically rated between 1-16.
MERV & Dust Collector Performance
How does MERV rating impact your dust collector's performance and why should it be important to you? To relate how we use MERV ratings in an everyday life scenario, you can simply think of it like a car rating on the website Kelly Blue Book. Kelly Blue Book is a website that allows you to check the rating and value of new and used cars based on their performance, price, mileage, and other factors that may be important to you as a consumer. When you go shopping for a new car you'll choose the car with characteristics that match your personal wants and needs. Similarly, when choosing your dust collector filters, it's important to consider the characteristics that most suit your facility's needs including your dust properties, work environment and dust volume.
Choosing the Right MERV Rating
Choosing the right filter and MERV rating for your dust collector is based on your application and the dust particles you need to capture. Higher MERV ratings are best suited for very fine particulate filtration applications. For example, if you operate a dust collector in a woodworking shop and your dust particles are larger, a higher MERV rating isn't important. However, if you operate a dust collector in a plant that has a plasma cutter which emits smoke and very fine dust particles, your application would benefit from filters with a higher MERV rating. You would see a performance difference because a filter with a higher MERV rating is more efficient at capturing small fine dust.