Learn About Air Purification and Filtration

If We Rated Cars Like Air Filters

August 03, 2018 |

ASHRAE 52.2 gave us the Minimum Efficiency Reporting Value (MERV) for air filters, creating a 16-point chart that tells us what percentage of particles in a certain size range will be removed by a filter.  This system was an improvement when it was introduced in 1999 ...

Air Filters and Your Lungs

July 10, 2017 |

With the introduction of ISO 16890 to the world (only the United States is left to adpot it) there has been a lot more talk and research about the relationship between air filters and air quality.  This discussion has been happening before, but with little emphasis on ...

What is a High Efficiency Air Filter?  MERV 11 or MERV 13?

April 27, 2017 |

The phrase "High Effiecency Air Filter" has been a subjective term in the past, and has been left up to the manufacturers, not users, of air filters to determine what makes a filter high efficiency.  With this responsibility on the shoulders of the air filter ...

MERV 8 and MERV 10 Comparison

April 17, 2017 |

There is a battle among pleated HVAC filter manufacturers - MERV-8, MERV-9, and MERV-10  Which is "best" for your facility and how different are these prodcuts really, seeing as not too long ago they were all MERV-6 or 7?  Frustratingly with ASHRAE 52.2 and the MERV ...

95% Air Filter, MERV-14, MERV-15, or MERV-16 - Yes?

April 10, 2017 |

 Oh MERV, if there were any clearer reason why you are going to be replaced byISO 16890, it is the confusion of 95% air filters.  A still common specification for final filters in hospitals the 95% filter could refer to MERV 14, MERV 15, or MERV 16 high efficiency air ...

What MERV Filter Do I Need?

February 24, 2017 |

One of the most common questions we get is asked a variety of ways:           How much MERV is enough?           What efficiency filter should I use?           Isn’t 8 enough? As is the case with most questions like this, the answer is: It depends.  To come to an ...

MERV/ASHRAE 52.2 Vs ISO 16890 Efficiency Charts

February 24, 2017 |

One of the more common requests we get is to do a cross between different filter test methods.  For years it was a 52.1 to 52.2 cross, then when Europe adopted EN779 charts crossing those two came about now with the adoption and publication of ISO 16890 we are being ...