LATEST POSTS
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Guidelines for Deciding When to Change Your Filter
Every filter has an optimal change-out point, and it is rarely the day the maintenance calendar says. Three things decide it: the measured pressure drop, the maintenance window you actually have, and what the element looks like when you open the unit. This post covers how to weigh those three against each other, and why…
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Guidelines for Changing G4, G3, and F Series Bag Filters in Air Handling Units (AHUs)
Bag filters in an air handling unit are changed, not cleaned. Washing or blowing them out damages the fibres, and the filter never returns to its rated efficiency however clean it looks afterwards. This post is the procedure for changing G3, G4 and F series bags safely, from the protective equipment through to seating the…
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ISO 29461: Standard for Air Intake Filters in Gas Turbines
ISO 29461 is the test standard for air intake filters on gas turbines and other rotary machinery. It now has three published parts, and the third one only arrived in 2024. Part 1 covers efficiency and dust holding capacity, Part 2 covers water, Part 3 covers whether the filter physically survives. Each part tests something…
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Dust Holding Capacity in Air Filters
Dust holding capacity (DHC) is a critical attribute of air filters that determines their overall performance and operational life. The ability of an air filter to retain particulate matter significantly affects the quality of indoor and outdoor air, as well as energy consumption in ventilation systems. Below is what DHC measures, why it drives filter…
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The Role of Air Filters in LEED-Certified Buildings
The world is becoming increasingly more conscious of its impact on the environment, and as a result, the importance of sustainable building practices has come to the forefront. One of the most well-known certification systems for green buildings is the Leadership in Energy and Environmental Design (LEED) program. Developed by the U.S. Green Building Council…
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What is HEPA Filter?
A High Efficiency Particulate Air (HEPA) filter is a type of air filter designed to remove fine airborne particles, such asvirus, bacteria, and mold spores, from the air. These filters are commonly used in various applications, including residential and commercial buildings, industrial cleanrooms, and medical facilities, to improve indoor air quality and protect sensitive equipment…
