Enclosure & Electronics Cooling, Liquid Cooling and Signaling Solutions

How to Choose the Best Heater for your Electrical Enclosure?

Posted by Marine Vienney on Dec 16, 2016 9:58:02 AM

Condensation is one of the biggest dangers for electrical enclosures. As long as the components operate under load, their own warmth prevents water from condensing. If the process is switched off, the electronics cool down. This is where Pfannenberg control cabinet radiant heaters and fan heaters provide additional protection for your electronics. 

How to Choose the Best Heater for your Electrical Enclosure?

  • Radiant Heaters

Radiant_Heaters.jpgPfannenberg PRH-M Mini Radiant Heaters (10 to 30 Watts) are ideal for smaller enclosures or for the heating of isolated spots in sensitive areas. These heaters use natural convection to heat the cabinet and prevent condensate formation. FLH series of Radiant Heaters (up to 150 Watts) are used in combination with a thermostat or hygrostat, mainly to avoid excessively low temperatures or high humidity into the enclosure.

  • Fan HeatersFLH_Fan_Heater.jpg

Ideal for use in larger electrical enclosures with higher heat requirements,
Pfannenberg FLH series of Fan Heaters (250 to 400 Watts) have an integrated fan that assists the natural convection and provides fast distribution of the heat in the electrical enclosure. The fan heaters are used in combination with a thermostat or hygrostat, and are designed to protect electronics from moisture or corrosion caused by high humidity, low temperatures or condensation caused by rapid temperature change.


Need more than "just" a Heater?

PFH-T_Hi-Res_THUMB.jpgPfannenberg also offers a range of fan heaters with an  integrated thermostat: PFH-T (200 - 1200 Watts) dedicated to larger enclosures and with flexible mounting options. These fan heaters with adjustable thermostat are especially designed to protect electronics from the effects of low temperatures such as corrosion, freezing or condensation, which can damage critical components within a control enclosure.


To provide the best Thermal Management for your electronics, using a thermostat or hygrostat results in greater reliability of your production process:

  • Pinpoint distribution and constant temperature in the control cabinet
  • Reduced energy consumption and optimization of the efficiency of the heaters.
  • Additional savings on energy, materials and time.

Pfannenberg’s heaters, thermostats and hygrostats  detect and keep ambient conditions above dew point to avoid the harmful effects of condensation on your electronics. They can be used as a standalone product or in partnership with our Filterfan® and Cooling Unit product lines for a complete Thermal Management of your electrical enclosures.

Topics: Thermal Management, Heaters