Air Cleaners

When source control or dilution are not adequate or feasible, air cleaners can be used to remove particulates and gases from indoor air. This lesson examines the different types and efficiencies of HVAC filters.

Learning Objectives

At the conclusion of this lesson, you will be able to:

• Summarize the methods used to categorize filter efficiency in ASHRAE 52.2
• Identify the types of filters that are most effective at removing different types of air pollutants
• Identify different types of filters and explain how they work
• Recommend an appropriate furnace filter

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