Profile: Pfannenberg, Inc. manufactures cooling units for electronic enclosures. Our products include filterfans, air conditioners, heat exchangers, heaters & thermostats. Our sturdy BR 50 signal tower is suitable for all indoor and outdoor applications designed for the rigors of industries. Our air-water heat exchangers feature thermostat & solenoid valve for temperature control, integrated temperature monitoring and high air flow rate. We are accredited with ISO 2000 certification.