Category: Maintenance & Cost
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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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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 Total Cost of Ownership of Air Filters
The purchase price of an air filter is usually the smallest number in its lifetime cost. Energy consumption driven by pressure drop dominates, and labour and disposal follow. This post breaks the total cost of ownership into its five parts, pressure drop, energy, filter price, labour and disposal, and shows why the cheapest filter on…
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How Often Should You Replace Your Air Filters
Air filters play a crucial role in maintaining the quality of indoor air, ensuring the health and comfort of occupants in a building, and supporting the efficiency of air handling units (AHUs) and industrial applications. An air filter’s primary function is to trap and remove contaminants, such as dust, pollen, and other particulates, from the…