High Temperature HEPA Filters: 250°C–350°C Solutions for Hot Processes
What Is a High Temperature HEPA Filter?
A high temperature HEPA filter is a HEPA filter engineered to operate continuously in hot air streams — typically 250°C to 400°C — without degrading, delaminating or leaking. They are essential in industrial drying, ovens, spray-painting and coating lines, where the air being filtered is far hotter than standard cleanroom air.
Onecleans builds high temperature HEPA filters with temperature-rated microglass media, special sealants and metal frames (galvanised steel or aluminium), and tests every unit at our CNAS-accredited laboratory.
Temperature Ratings We Offer
| Max Temperature | Product | Typical Application |
|---|---|---|
| 250°C | 250°C High Temp HEPA (Alu Frame) | Drying ovens, industrial air handling |
| 300°C | 300°C High Temp Pleat Prefilter | Spray-painting and coating lines |
| 350°C | 350°C High Temp HEPA Air Filter | High-heat curing, powder coating, incineration air |
What Makes a Filter “High Temperature”?
- Media — microglass fibre media that retains efficiency at elevated temperatures
- Separators — aluminium or stainless steel corrugated separators that hold pleats without softening
- Sealants — high-temperature silicone or ceramic compounds that do not outgas or crack
- Frame & gasket — metal frames and heat-rated gaskets for leak-free seating
Applications
- Spray coating & painting lines — removing overspray and particulates from hot booth air
- Powder coating and curing ovens
- Industrial dryers and heat-treatment air handling
- Food baking and high-heat processing
For a real-world look at how these filters perform, read our article on high-temperature HEPA filters in spray plants and coating lines.
How to Specify a High Temperature HEPA Filter
- Confirm the actual maximum air temperature, including start-up spikes.
- Choose the right rating — leave a safety margin above your peak temperature.
- Match airflow and dimensions to the oven or duct housing.
- Verify gasket and seal materials for your process gases.
Related Reading
Frequently Asked Questions
Can a standard HEPA filter handle high temperatures?
No. Standard HEPA filters use sealants and separators that soften or fail above ~80°C. Always use a temperature-rated filter for hot air streams.
What is the maximum temperature available?
We supply high temperature HEPA filters rated to 250°C, 300°C and 350°C, with higher ratings available on request.
Do high temperature filters need prefilters?
Yes — a high-temperature prefilter protects the HEPA media and extends service life in dirty hot-air environments.
Request a high temperature filter quote — tell us your temperature and airflow for a matched solution.