About
Your Filtration Partner Since 2019
Weier makes high-performance air filters for cleanrooms, pharma plants, semiconductor fabs, labs, and HVAC systems. Our facility produces over 500,000 filters a year, and we ship to more than 80 countries.
We manufacture our own filter media in-house, which means tighter quality control and faster lead times for you. Need a custom size or a specific efficiency rating? Our 15 R&D engineers work with you to get it right.
The Team Behind Your Filters
When you work with Weier, you get a dedicated team of filtration engineers who know your industry. We handle everything from material selection to final testing, so your filters show up ready to perform.
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Founded
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Countries Served
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Filters Produced Yearly
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R&D Engineers
See How We Work for You
Explore our workshop, production lines, testing systems, and real project installations—everything designed to give you cleaner air.
Every Filter Backed by Real Certifications
- ISO 9001 – Batch-to-batch consistency you can count on
- ISO 14001 – Meets your facility’s sustainability requirements
- ISO 45001 – Worker safety built into our production process
- SGS Tested – Independent lab results, not just our word
- RoHS Compliant – Safe for use in regulated environments
- Intertek Certified – Accepted across global markets without extra paperwork
- EN 1822 & ISO 16890 – Efficiency ratings based on mechanical testing, not electrostatic charge
