EN779 is Europe’s ASHRAE 52.2 Included in their testing is energy use, and though MERV isn’t a direct cross to EN779 efficiencies this chart gives you a good idea of the energy required by different types of filters.

Real-World Fractional Efficiency Curves:

Most Fractional efficiency curves only tell you the efficiency at a particle size. When you mate that data with the distribution of particles in the air, you see a much different and more accurate picture.

So is Merv-8 really doing anything? Shouldn’t Merv-13 be the “standard”?

Air Filter Battles Video Series

Comparing different filter styles side-by-side to see their different Energy Requirements

Merv-8 As A Standard

Why we use MERV-8, and what is it actually doing for you

CamField Mobile Lab

True In-Situ testing that cuts through all the claims and provides clear, unbiased, real-world results

Filter Testing

Discussing the limitations and useful portions of the ASHRAE 52.2 testing procedure

FARR 30/30 vs Ring Panels

A quick look at the energy consumption differences between the FARR 30/30 and Ring Panel style fitlers

Circle Of Success

Camfil is a leader in Air Filtration Research and Development, this video explains what you get for all that time and effort

Bag In/Bag Out

Step by step procedure for changing filters within a BIBO system

Pleats vs Water

Take a look at what happens to a normal pleat, and then FARR 30/30 when they get wet and become loaded – Only one lasts

Synthetic Media

A discussion of the properties synthetic HVAC medias and filters

HEPA Manufacturing

See the Proccess Camfil uses to make their Absolute HEPA filters

    White Papers

    What’s In A Filter:


    How are filters constructed, and how do different filter medias perform.

    Simple Life Cycle Cost Procedure:


    An outline of a simple way to compare air filter options.

    Net Present Value for Operations Decisions:


    NPV is used as part of the routine to evaluate whether a capital investment is worthly of the expense, and you can use this evaluation method for operational decisions as well.

    ASHRAE 52.2-2012:


    A few of the highlights of the current 52.2 revision.

    Air Quality Index:


    Increased focus on non-particulate pollutants will have significant impacts on how we will need to filter buildings.

    Leakage in AHUs:


    Leakage is common in OEM made filter housings – how much and what can you do about it.

    Healthy Schools:


    Many “healthy schools” initiatives focus only on what is on the breakfast and lunch menus, but people consume more air than food and drinks.

    HVAC Energy Savings:


    What are your filters costing you and when to change them for maximum benefit.

    Isolation Room Filtration:


    A basic overview of the filtration requirements and recommendations for Isolation Rooms.

    What’s In The Air:


    We use filters, but why? What is really in the air we breath?

    Keeping Coils Clean:


    Modern technology is a great thing, keeping coils clean and in their most efficient condition is easier now than it has ever been due to some great technological advances.

    Energy Ratings for Air Fitlers:


    ASHRAE’s European counterpart has developed a testing standard to show how much energy a filter will use over its life, allowing you to have third party documentation instead of just trusting how much energy a manufacturer says their product will save.

    Comparison of Wetlaid and Airlaid Air Filter Media:


    When choosing High-Efficiency air filters wetlaid media offers more square footage, but air laid offers higher dust holding per square foot. This article will discuss this and the other differences between the two air filter media options.

    Filters As A System:


    Looking at your air filters as a sytem within themselves instead of just something you put into your HVAC system allows you to understand the relationship of the air filter with the ventalation system and provide you with better insight as to how to optimize your air filter program.

    UV-C Checklist:


    Thinking about UV-C for your facility to help reduce energy consumption and improve your HVAC systems efficiency? Many facility engineers are as it has proven itself to offer quick paybacks and reduce maintance requirements on HVAC systems. Learn what you need to know and what to look out for when you’re starting to look into a UV-C system