Profile Home


For nearly 100 years, Dalton Electric Heating Co., Inc., has manufactured industrial heaters. Today, Dalton's patented Watt-Flex® Cartridge Heaters and Diff-Therm® Platen Heaters are used throughout the world in manufacturing industries such as the aerospace, automotive, composites, plastics, and many other industries.

Dalton moved to their present headquarters location in Ipswich, MA in 1989. In 1995, they doubled their manufacturing floor space. In 2000 they completed a two-story addition, housing both office and manufacturing.

Watt-Flex® Split-Sheath
Cartridge Heaters
Diff-Therm® Vacuum
Diffusion Pump Heaters
Dalton Electric Heating Co., Inc.
  • Maximize Heat Transfer
  • Reduce Maintenance Costs
  • Warranted Easy Removal
  • Last up to 5 times longer than conventional heaters
  • Custom options including Hot or Cool Tip, distributed wattage and lead modifications

For new or replacement cartridge heater  applications, Dalton's revolutionary split-sheath cartridge heaters will provide even heating, eliminate bore seizure, and lower your process heating costs. 

Dalton Electric Heating Co., Inc.
  • Direct Replacement Heaters for all 2" thru 48" Major Vacuum Diffusion Pumps
  • Outperform Original Equipment Heaters
  • One Piece Assembly Simplifies Installation
  • Over 100 combinations of casting sizes and electrical ratings
  • Available from STOCK

Diff-Therm® Platen Heaters set the industry standard for long-life, uniformly distributed process heat and efficient power generation. Over 110 heater combinations are available for direct replacement of vacuum diffusion pump heaters.

Product Catalog

Dalton Electric Heating Co., Inc. is also listed in these categories:

Technical Articles

Diff-Therm Technical Brief (Industrial Heaters and Heating Elements) Vacuum diffusion pumps require an effective heating system to drive the pump. Conventional designs often employ a complicated series of components that must be carefully matched up, adding unnecessary... (View Full Article)
Process Heating Engineering Data and Application Design Considerations (Industrial Heaters and Heating Elements) Reference information to assist you in the selection of Watt-Flex heaters for new process heating designs. (View Full Article)