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Furnace filter merv rating

A standard fiberglass one-inch filter is typically a MERV-2. The high end of the scale is MERV-16. Before we go further, we need to define the three general size ranges of particulate matter (PM). PM10 - 3.0 to 10.0 microns PM2.5 - 1.0 to 3.0 microns PM1.0 - 0.3 to 1.0 micron.

Most filters' values range from 1 to 16, with the higher number representing the thickest and densest filter. While a filter with a higher MERV rating will most definitely catch more dust and pollutants, it can be so thick that it impedes your furnace's airflow, which can lead to a whole other hosts of issues. Understand that the higher the MERV rating the greater the resistance or static pressure will be across the filter media. For most HVAC furnace filter applications a MERV 8 and lower since these filters will allow for lower resistance with good filtration of larger particles.

Find the furnace filters you need, from the popular 16x25x1 furnace filter to washable furnace filters and more. applicable regular annual rate from the day after the date of your next statement, and (ii) the balances outstanding will form part of the balance due on that statement.

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Other Measurement Systems. Familiarity with MERV ratings might not be enough when you need to buy your furnace filter. For example, some major retailers use the filter performance rating. Aug 24, 2016 · Please consult the below table before selecting the appropriate Honeywell Furnace Filter for your required needs. The MERV Ratings for all Honeywell Furnace Filters range from levels 8 to 12. A higher MERV rating equates to enhanced performance in protecting your surrounding air..

One fiberglass filter (Ace 30 Day) was chosen as a reference. Its rating was not listed and it was assumed to be MERV 2. All filters except the Ace 30 Day and WEB Lifetime filters have pleated media. All but one of the filters (a 2-inch MERV 13 product) were purchased from chain retail stores.

The rating is derived from a test method developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) [see]. The.

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