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Series 3R Filterfan
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PF/PFA Series Filterfans®, Exhaust Filters and Filter Media

Trust in the Original

Filterfans 4.0™

Our most popular standard
Type 12 Filterfans®.

Outdoor Filterfans Type 3R

Designed for outdoor weather – resistance against falling rain, snow, and UV degradation..

Slimline Filterfans 4.0™

This Type 12 Filterfan® is ideal for installation in enclosures with limited depth.

Exhaust Filters

Exhaust Filters to complement our Type 12 and Type 3R Filterfans®.

Top Mount Filterfans 4.0™

These Type 12 Filterfans® are designed for installation on top of enclosures.

EMC Filterfans 4.0™ & Exhaust Filters

Our EMC Filterfans® offer the widest range of protection against electromagnetic interference.

Filterfans® Rainhoods

Pfannenberg Rainhoods feature a robust design rated to NEMA TYPE 3R/4/4x and IPx6 when used with Filterfans®.

Datawind Filterfan®

Externally mounted Datawind Filterfan® designed for the new IT space, the manufacturing floor.

Filter Media

Pfannenberg offers different types of filter mats giving you the best possible protection.

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Otto Pfannenberg’s invention of the Filterfan® in 1958 was a milestone in the area of industrial thermal management. As a result of over 50 years of experience and continuous development, Pfannenberg’s Filterfans® have evolved into the trusted name for forced convective cooling to circulate and cool the air in your cabinets.

If the ambient temperature is always lower than the temperature required in the electrical enclosure, then Filterfans® represent an economical solution for thermal management of electrical enclosures. Filterfans® are the ideal solution for clean, non-hazardous environments with an acceptable ambient (outside the enclosure) temperature range.

When the amount of heat being removed from your enclosure is minimal, the use of PFA Exhaust Filters can be effective.  This method usually provides less of a cooling effect than is necessary with today‘s components.

Important for the use of Filterfans®:

  • Use Filterfans® to force the surrounding air into the electrical enclosure, so that a slight overpressure builds up inside the enclosure.
  • The surrounding air enters the electrical cabinet exclusively via the Filterfans®, which ensures that it is filtered.
  • Install the Filterfans® in the lower third of the electrical enclosure and the exhaust filter as close to the top as possible. This assists the natural convection of the air and avoids hot spots within the enclosure.

Why Choose Pfannenberg Filterfans?®

UL Listed Certification

The first true globally manufactured UL Listed Type 12 Filterfans®. Save time and money certifying your panel to UL508a.

Highest Airflow & Protection

With our flow optimized fins and rotor blades, the Filterfan 4.0™ reaches a particularly high airflow and at the same time providing a Type 12 and Type 3R system of protection. The flat-profile, uni-colored design complements modern machines and plants.

Tool-free Installation

Pfannenberg’s patented click mechanism on our Filterfans 4.0™ have a unique patented 4-corner fastening system enabling safe and quick, tool-free installation allowing the filter medium to be replaced in seconds.

Superior Filter Design

The fluted filter mat’s folded structure provides an unrivaled airflow guaranteeing Nema Type 12 protection, while also extending the filters lifetime 300% longer than conventional filter.

Trust in the Original – For Over 50 Years

Otto Pfannenberg’s invention of the Filterfan® in 1958 was a milestone in the area of industrial thermal management. Today Pfannenberg provides a wide range of different solutions for industrial thermal management and is thus one of the few specialists that can provide the appropriate devices for virtually all industrial requirements – worldwide.

All Weather Protection

Pfannenberg offers Indoor Type 12 and Outdoor Type 3R Filterfans to face all environmental conditions.

Patented Tool-Less 4 Corner Fastening System

The patented fastening system allows for fast installation (possible to install in seconds) and easy removal reducing MTTR.

Aesthetically Pleasing Design Using Neutral Colors

Available in a standard RAL 7035 Grey and an optional Black color. These units blend in well with the modern styles and colors used for existing machines and systems.

300% Longer Service Time via Patented Fluted Filter Mat

A larger surface area on the filter mat allows for a high filtration level, greater service life and maximum airflow. Saving time and money.

UL Certification

With the UL Listed Certification Pfannenberg is the only global manufacturer who offers a certified robust product, dedicated to harsh environmental requirements, without further protection – worldwide.

Highest Quality Fans

German manufactured fans that exceed industry standards for quality, performance and service life.

Globally Compatible

ERP compliant to meet European efficiency directives. Units also comply with additional national & international standards (TüV, NEMA, UL, CSA & EAC).

Versatile Options

Options including UV Protected Plastic for use in direct sunlight, EMC shielding to attenuate RF signals and exhausting fans for custom applications.

Highest System Airflow Compared to Competitors Filter Fans.

The design of the louvers supports the greatest airflow while further protecting against airborne dust and dirt.