U.L. Recognized – Guide SEOT2, file SA4093 for use in air conditioning equipment.
C.S.A. Certified – Guide 165-E-90, file 016386-0-000 for use in air conditioning equipment.

Crankcase heaters are used to overcome the problem of migration and condensation of refrigerant in the crankcases of compressors used in air conditioning and heat pump systems. They are designed to keep the crankcase oil at a temperature higher than the coldest part of the system to prevent migration.

• Backer Hotwatt Crankcase Heaters are constructed of the highest quality corrosion resistance materials and sealed against moisture.

The following lists Backer Hotwatt Crankcase Heaters by the OEM manufacturer. In addition, custom designed crankcase heaters and variations to the units shown are also available.

• Borg Warner Compressors
• Carrier Compressors
• Copeland Compressors
• Fedders Compressor
• Trane Compressors
• Westinghouse/McQuay Perfex Compressors