High-Temperature HEPA filters

Clean-Link can support H13 and H14 project requirements, separator-style HEPA constructions, metal frame options, custom dimensions, airflow and pressure drop review, and application-specific temperature requirements.

High-Temperature HEPA Filter Products

High-Temperature HEPA Filter with Aluminum Separator

A separator-style HEPA filter designed for selected elevated-temperature HVAC and industrial process applications.

Typical project options may include:

• H13 / H14 requirements
• Aluminum separators
• Metal frame construction
• Custom dimensions
• Gasket options
• Project-specific sealant
• Airflow and pressure drop review

High-Temperature HEPA Filter with Galvanized Steel Frame

Rigid metal-frame construction for industrial air handling, process ventilation, and equipment applications.

Typical options:

• Galvanized steel frame
• Separator media pack
• Custom filter depth
• H13 / H14 project requirements
• Gasket configuration
• Project-specific temperature review

High-Temperature HEPA Filter with Stainless Steel Frame

For projects where elevated temperature is combined with demanding environmental, cleaning, corrosion, or process conditions.

Typical applications may include:

• Pharmaceutical processes
• Laboratories
• Industrial ovens
• Process air systems
• Controlled production environments
• Specialized OEM equipment

Custom High-Temperature HEPA Filter

For non-standard housings, retrofit projects, OEM equipment, ovens, and process ventilation systems.

Custom options may include:

• Length, width and depth
• Frame material
• Separator material
• Efficiency requirement
• Rated airflow
• Pressure drop
• Sealant
• Gasket
• Continuous operating temperature
• Peak temperature
• Drawing or sample matching

Request Custom Specification →

What Makes a HEPA Filter Suitable for High Temperature?

A high temperature HEPA filter is not simply a standard HEPA filter installed inside a metal frame.

The entire construction must be suitable for the expected temperature and operating cycle.

Important components include:

• HEPA filter media
• Separator material
• Frame material
• Media-to-frame sealant
• Gasket material
• Protective grille or faceguard
• Adhesives or bonding materials
• Corner construction
• Filter depth
• Airflow conditions

Each component can have a different temperature limitation.

That is why buyers should confirm the actual continuous and peak operating temperatures before ordering.

The temperature capability of a high-temperature HEPA filter depends on the complete filter construction, not only the frame material.

Continuous Temperature vs Peak Temperature

One of the most important details in a high-temperature HEPA filter RFQ is whether the stated temperature is:

• Continuous operating temperature
• Short-duration peak temperature
• Start-up temperature
• Process temperature
• Air temperature at the filter face

These are not always the same.

For example, an oven process may reach a high internal temperature while the air reaching the HEPA filter is lower.

In another system, the filter may be continuously exposed to elevated air temperature for many hours.

Buyers should provide both:

Normal operating temperature + maximum expected temperature

This helps avoid selecting a filter based on an unrealistic or incomplete temperature value.

Separator Construction for High-Temperature HEPA Filters

Many high-temperature HEPA filters use deep-pleat separator construction.

The separator helps maintain spacing between the pleated filter media and supports airflow channels through the filter pack.

Aluminum separators are commonly associated with this type of construction because they can provide structural stability in applications where conventional thermoplastic mini-pleat spacers may not be appropriate.

The separator should still be evaluated together with:

• Media
• Frame
• Sealant
• Gasket
• Filter depth
• Airflow
• Operating temperature

Related collection: Deep-Pleat HEPA Filters

H13 and H14 High-Temperature HEPA Filters

Clean-Link can support H13 and H14 high-temperature HEPA filter requirements depending on the confirmed product design and application.

Efficiency selection should be considered together with:

• Operating temperature
• Rated airflow
• Pressure drop
• System fan capability
• Filter dimensions
• Separator construction
• Prefiltration
• Sealing
• Testing requirements
• Process conditions

High-efficiency filter classification and testing are covered within ISO 29463. ISO 29463-1:2024 is the current classification, performance, testing and marking framework for high-efficiency filters and filter media.

The required class and testing scope should be specified according to the actual project.

Frame Material Options

High-temperature HEPA filters generally require frame materials suitable for the operating environment.

Galvanized Steel Frames

Galvanized steel may be used for selected industrial and process ventilation applications where rigid metal construction is required.

Stainless Steel Frames

Stainless steel may be considered where the project also involves:

• Corrosion exposure
• Cleaning requirements
• Demanding industrial conditions
• Pharmaceutical or process environments
• Higher structural durability requirements

Aluminum Frames

Aluminum frames may be suitable for certain temperature and application requirements, depending on the complete filter construction.

Frame material should never be selected independently from the sealant, gasket, media, and separator system.

Sealant and Bonding Materials Matter

The sealant that bonds the media pack to the frame is a critical part of high-temperature HEPA filter construction.

A standard adhesive used in ordinary HVAC filters may not be suitable for elevated-temperature operation.

Depending on the project, the filter may require a temperature-compatible sealing system.

Important information includes:

• Continuous operating temperature
• Peak temperature
• Heating cycle
• Cooling cycle
• Humidity
• Chemical exposure
• Process air composition

Clean-Link can review the required filter construction based on the actual operating environment.

Gasket Options for Elevated Temperature Applications

The gasket should also be suitable for the operating conditions.

Depending on the project, gasket selection may need to consider:

• Temperature resistance
• Compression
• Housing surface
• Installation direction
• Chemical exposure
• Replacement frequency

Possible configurations may include:

• Upstream gasket
• Downstream gasket
• Full-face gasket
• Custom gasket position
• Project-specific gasket material

The gasket and filter housing should be treated as part of the same sealing interface.

Airflow and Pressure Drop

High-temperature applications still require careful airflow and pressure drop review.

Important parameters include:

A high-temperature filter should not be selected only by temperature rating and efficiency.

It must also fit the system's airflow and pressure capability.

Related guide: Air Filter Pressure Drop

Typical Applications

High-temperature HEPA filters are used in applications where high-efficiency particle filtration is required under elevated temperature conditions.

Typical applications may include:

• Industrial ovens
• Drying systems
• Pharmaceutical processes
• Sterilization-related equipment where project specifications require suitable HEPA filtration
• Coating and finishing processes
• Baking or curing processes
• Heat-treatment-related ventilation
• Laboratory equipment
• Process air systems
• Industrial exhaust or recirculation systems
• OEM thermal equipment
• Specialized manufacturing environments

Actual filter construction should be selected according to the filter location and air temperature reaching the filter.

High-Temperature HEPA Filters for Ovens and Drying Systems

Oven and drying applications can present specific filtration challenges.

Important conditions may include:

• Elevated temperature
• Continuous operation
• Temperature cycling
• Process-generated particles
• Limited installation space
• High airflow
• Existing filter housing dimensions

For an oven or drying-system project, buyers should provide both the equipment operating temperature and the expected air temperature at the HEPA filter location.

This is especially important because the filter may not be exposed to the same temperature as the main process chamber.

High-Temperature HEPA Filters for Pharmaceutical and Process Applications

Some pharmaceutical and controlled process environments require high-efficiency filtration together with elevated operating temperatures.

Filter selection may need to consider:

• Efficiency class
• Temperature
• Frame material
• Separator
• Sealant
• Gasket
• Pressure drop
• Cleaning environment
• Test requirements
• Documentation needs

The filter should be treated as part of the complete process and HVAC design rather than selected only by HEPA class.

Standard and Custom Sizes

Clean-Link can support standard and custom high-temperature HEPA filter dimensions.

Custom requirements may include:

• Length
• Width
• Depth
• Frame thickness
• Flange design
• Gasket position
• Separator construction
• Rated airflow
• Pressure drop
• Temperature
• H13 / H14 requirement
• Packaging
• OEM labeling

For replacement projects, buyers should provide actual dimensions rather than nominal dimensions whenever possible.

Related page: Custom HEPA Filters

Replacement High-Temperature HEPA Filters

Replacing an existing high-temperature HEPA filter requires more than matching the outside size.

Buyers should confirm:

If complete information is unavailable, start with:

Photo + dimensions + application + operating temperature

How to Select a High-Temperature HEPA Filter

Before requesting a quote, confirm as much of the following information as possible:

• Application
• Filter dimensions
• H13 / H14 or project efficiency requirement
• Continuous operating temperature
• Maximum / peak temperature
• Rated airflow
• Pressure drop requirement
• Frame material
• Separator requirement
• Gasket type
• Filter installation location
• Heating and cooling cycle
• Humidity
• Process contaminants
• Existing filter photo
• Drawing or sample
• Quantity
• Testing requirements

The most important selection rule is:

Do not select a high-temperature HEPA filter based on temperature rating alone.

Efficiency, airflow, pressure drop, materials, sealing, filter construction, and actual operating conditions all need to work together.

Testing and Documentation Requirements

High-temperature HEPA filter projects may require different inspection or testing requirements depending on the application.

Clean-Link can support discussion of:

• Dimensional inspection
• Visual inspection
• Frame and separator inspection
• Gasket inspection
• Resistance data where applicable
• Efficiency-related testing where applicable
• Leakage / scan testing requirements where applicable
• Datasheets
• Drawings
• Project-specific documentation where applicable

Testing scope should be confirmed before production.

ISO 29463-4 covers the scan method for determining leakage of high-efficiency filter elements, while ISO 29463-5 covers test methods for filter elements.

Do not assume a standard temperature rating automatically defines the required HEPA testing procedure.

Request a High-Temperature HEPA Filter Quote

Need a high temperature HEPA filter for an oven, drying system, industrial process, pharmaceutical application, or OEM equipment?

Send Clean-Link:

• Filter dimensions
• Efficiency class
• Continuous operating temperature
• Maximum temperature
• Rated airflow
• Pressure drop requirement, if available
• Frame material
• Separator requirement
• Gasket requirement
• Application
• Existing filter photo or drawing
• Quantity
• Testing requirements

If you do not have the full specification, start with:

Photo + dimensions + application + operating temperature

Clean-Link can help review what should be confirmed next.

Request a Quote →

FAQ

What is a high-temperature HEPA filter?

A high-temperature HEPA filter is designed for high-efficiency particle filtration in applications where the filter is exposed to elevated air temperatures. The media, frame, separator, sealant, gasket, and other components must all be suitable for the operating conditions.

What temperature can a high-temperature HEPA filter withstand?

There is no single temperature rating that applies to every high-temperature HEPA filter. The allowable temperature depends on the complete filter construction and whether the exposure is continuous or short-term. Buyers should provide both normal and maximum operating temperatures.

Are high-temperature HEPA filters available in H13 and H14?

Clean-Link can support H13 and H14 project requirements depending on the filter construction, operating temperature, airflow, pressure drop, and testing specification.

Why are separators used in high-temperature HEPA filters?

Separator construction helps maintain spacing between deep media pleats and creates airflow channels through the filter pack. Aluminum separators are commonly used in many traditional high-temperature HEPA designs.

Can high-temperature HEPA filters be used in ovens?

They can be used in suitable oven and drying applications when the complete filter construction is matched to the actual temperature, airflow, process environment, and housing design.

Can Clean-Link manufacture custom high-temperature HEPA filters?

Yes. Custom options can include dimensions, efficiency, frame material, separator construction, gasket, airflow, pressure drop, temperature requirement, packaging, and sample or drawing matching.

Is stainless steel required for every high-temperature HEPA filter?

No. Frame material depends on the actual temperature, corrosion conditions, cleaning requirements, housing design, and project specification. The complete construction should be reviewed.

Does a metal frame automatically make a HEPA filter suitable for high temperature?

No. The filter media, separator, sealant, gasket, and other components also need to be compatible with the operating temperature.

What information is needed for a quote?

Provide dimensions, efficiency class, continuous and maximum temperature, airflow, pressure drop if available, frame material, separator requirement, gasket, application, quantity, and an existing filter photo or drawing where possible.