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Air Filtration

December 26, 2020 By Jim Rosenthal

Comparing Filters for Resistance and Efficiency

By Jim Rosenthal, CAFS Several years ago I wrote an article for this website comparing different commonly available filters for resistance and efficiency (at 0.3um). The article continues to be one of the most popular on our site. There just aren’t many places where one is able to compare filters from various manufacturers. Somehow it … More

Filed Under: Air Filtration, Articles Tagged With: filter comparisons efficiency pressure drop resistance

December 4, 2020 By Jim Rosenthal

It’s All About the Air Flow Through the Filter

By Jim Rosenthal, CAFS Users of air filters – whether they are residential or commercial – are not interested in filter efficiency. Efficiency is just a number. What they are interested in is whether or not an air filter will protect their HVAC system and provide better indoor air quality in their home or building. … More

Filed Under: Air Cleaners, Air Filtration, Articles, Indoor Air Quality Tagged With: Filtration efficiency MERV11 Corsi Box HEPA competition

August 6, 2020 By Jim Rosenthal

How a MERV 13 Air Filter and a Box Fan Can Help Fight Covid-19

By Jim Rosenthal, CAFS A MERV 13 filter and a box fan? It is definitely not a new idea. It has been floating around for years. However, in the era of Covid-19, it is time to take all of the tools out of the toolbox. This simple, inexpensive air cleaning device can remove substantial amounts … More

Filed Under: Air Filtration, Articles, Indoor Air Quality

January 5, 2017 By Jim Rosenthal

Is ISO 16890 Adoption Related to PM1 Removal in Indoor Air?

  “The World Health Organization (WHO) has stated that air pollution is the greatest threat to human health today.  The smallest and most dangerous fraction is PM1.  It is so dangerous that we need to protect ourselves against it.  The industry is responding.  That is why we welcome ISO 16890 – the new industry standard … More

Filed Under: Air Filtration, Articles

January 1, 2017 By Jim Rosenthal

ISO 16890 Should not be Adopted as the US Air Filter Testing Standard – Continued

  After publishing this article: https://www.texairfilters.com/the-usa-should-not-adopt-iso-16890-for-air-filter-testing-heres-why/ on Linkedin, we had a very good discussion about the pros and cons of the US adopting ISO 16890 as our air filter test standard.  This article is taken from that discussion.  I have omitted some comments and the names of participants, have shortened the comments of other participants (although I … More

Filed Under: Air Filtration, Articles

November 29, 2016 By Jim Rosenthal

The USA Should Not Adopt ISO 16890 for Air Filter Testing – Here’s Why

Currently, air filters are tested in the United States according to the procedures described in ANSI/ASHRAE Standard 52.2-2012. This test procedure results in a Minumum Efficiency Reporting Value (MERV) for an air filter. For details of how the test is conducted see other articles on this site. There is a movement to approve the new … More

Filed Under: Air Filtration, Articles

April 22, 2016 By Jim Rosenthal

Importance of Air Filtration

To reduce maintenance and operating costs of the equipment and to provide the level of cleanliness required, and Protecting the general well-being of the occupants of a space; Protecting the décor of occupied spaces by removing the staining portion of airborne dust; Reducing maintenance of building interiors by reducing the freuency of washing such items … More

Filed Under: Air Filtration

March 14, 2014 By Jim Rosenthal

ASHRAE Research Project Report On Air Filters Raises More Questions Than it Answers

In March of 2013 the results of ASHRAE Research Project Report 1360-RP was made available for distribution.  The 415 page Report is entitled “How Do Pressure Drop, Efficiency, Weight Gain, and Loaded Dust Composition Change throughout Filter Lifetime.  The Contractor was RTI International and the Principal Investigator was Kathleen Owen.  Ms. Owen presented the findings … More

Filed Under: Air Filtration, Articles, Indoor Air Quality

February 20, 2014 By Jim Rosenthal

Selecting the Right Filter to Improve Indoor Air Quality

Many HVAC technicians falsely believe that the only type of filter to use in a system is a fiberglass one-month “throwaway.”  They are convinced that the only purpose of a filter is to protect the equipment from dust and debris and that the need for the better air flow provided by the fiberglass filter overrides … More

Filed Under: Air Filtration, Articles, Indoor Air Quality

May 22, 2013 By Jim Rosenthal

How Concerned Should We Be with the Filtration of Sub-micron Sized Particles in Indoor Environments?

In recent years more and more studies have been published showing that increased levels of sub-micron sized particles in the air result in higher levels of inflammation.  This inflammation has been found in the cardiovascular and the respiratory system of exposed individuals resulting in increased morbidity and mortality.  Increased levels of heart attacks and asthma attacks … More

Filed Under: Air Cleaners, Air Filtration, Allergies, Articles, Asthma, Indoor Air Quality, Mold (mould), Respiratory Health

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  • Company News (4)
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