What is MERV? – Features, Benefits and Information

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The MERV (Minimum Efficiency Reporting Value) rating of a filter describes the size of the holes in the filter that allow air to pass through. The higher the MERV rating, the smaller the holes in the filter, the higher the efficiency.

Recently the American Society of Heating Refrigeration and Air Conditioning Engineers (ASHRAE) and the air filter industry have come up with a standardized rating system, based on the European concept, of a MERV rating for each type of air filter. This numbering system makes it easier to evaluate and compare mechanical air filters and will hopefully eliminate some of the confusion regarding the overall effectiveness of any type of a mechanical air filter on removing airborne particulates, especially those that are less than 2 microns in size.


Throw-Away Fiberglass Media MERV 1 -MERV 4
Pleated Media Air Filters 30% ASHRAE MERV 10 – MERV 11
Pleated Media Air Filters 65% ASHRAE MERV 13 *
(* 65% ASHRAE is about 20% effective on less than 1 micron particles)
Pleated Media Air Filters 95% ASHRAE MERV 14

Some of the man-made synthetic media like that used in the 3M Filtrete air filters may be rated MERV 15. However, they hold very little dust and load up quickly and have a relatively high-pressure drop (static pressure) and can affect the performance of the heating/cooling system.
If you need any more information or have any questions as you consider an indoor air quality purchase, please do not hesitate to contact our customer support team via email by clicking here: I Have A MERV Question

Aprilaire humidifier :-

The Aprilaire humidifier sets the gold standard for whole house humidification at an affordable price. For many years, Aprilaire has been the market leader in providing two main types of residential humidifiers:

•    Bypass humidifiers – can produce 12 – 17 gallons of humidification per day and utilize a small bypass duct to introduce moisture into the air stream

•    Power-spray humidifiers – can produce 18 gallons of humidification per day and utilize a power-spray mechanism to introduce moisture into the air stream
Both the bypass and power-spray humidifiers offer excellent performance, comfort enhancement, reliability, and low maintenance requirements. The type you choose will be based on factors such as the square footage of the home, ductwork type and location, accessibility, and budget. In general, bypass humidifiers cost less and are used in most average-sized homes, while the power-spray models like the Aprilaire 700A and Aprilaire 700M humidifiers are used in larger homes or in special applications.
As always, Thank You for shopping at DiscountFurnaceFilter.com. We sincerely appreciate your business.

Will Housh is a very well known author who writes on the topics related with Aprilaire Humidifiers, Lennox Filters, Whole house Humidifiers and many more for the site www.discountfurnacefilter.com.

Tags: General Humidifier

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