Blog & Insights

The latest in industrial air filtration: emerging trends, engineering guidance and practical advice for keeping the air in your facility safe and breathable.

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Buyer Questions

Frequently Asked Questions

What is capture-at-source filtration and why does it matter?

Source capture uses a hood, arm or enclosure to intercept contaminants close to their point of generation, before they spread through the work area. Effectiveness depends on hood geometry, position, airflow, cross-drafts and the process. It is not a blanket guarantee of exposure control or energy savings; see our source-capture engineering guide for the design questions to review.

What is the difference between a fume extractor and an ambient air cleaner?

A fume extractor uses a hood or arm to capture emissions near a process, while an ambient cleaner treats residual particulate after it has dispersed. Ambient treatment may supplement source capture, but is not a substitute for it. Confirm contaminants, filter capability and the exhaust or recirculation path for the actual installation.