Chromalox Thermwire Compressor Heaters


  • Available in 8 Watts per Foot
  • Available in 120 and 240V Models
  • Third-party certifications: CSA, UL (Ordinary Areas Only)
  • Pre-Assembled length good for compressors up to 48″ diameter
  • 120V Models include factory terminated 3 foot cord set with plug and end seal
  • 240V Models include factory terminated 3 foot cord set with flying leads and end seal
  • Integral zip tie for easy and secure installation
  • For Use on residential HVAC compressors

Thermwire Compressor Heaters provide safe reliable freeze protection of residential HVAC compressors. Preassembled units include factory terminated cold lead with plug or flying leads, end seal and integral zip tie for fast reliable installation. Models available for 120 and 240 volt use. These cables are designed to heat the bell of the compressor to prevent oil and refrigerant separation at cold temperatures thus preventing premature compressor wear.


  • Residential HVAC compressors


Approximate Size  3/8″ x 1/8″
Process Temperature Maintenance  150°F (65°C)
Maximum Continuous Exposure Temperature, Power Off 185°F (85°C)
Min. Install Temperature -40°F (-40°C)
Min. Bend Radius  1-1/8″