• Duct Heater
    LDH & D SERIES
    DUCT HEATERS by Watlow
    INSTALLATION FLEXIBILITY - No flues or fuel lines
    UL® and CSA COMPONENT RECOGNITION
    Learn More
  • Watlow Enclosure Heater
    SILICONE RUBBER
    ENCLOSURE HEATERS by Watlow
    RUGGED, RELIABLE AND SAFE TO OPERATE
    Designed for freeze and condensation protection
    Learn More
  • Watlow 375 Finned Strip Heater
    375 & FINBAR
    FINNED STRIP HEATERS
    EFFICIENT HEAT CONDUCTION
    FROM WIRE TO SHEATH
    Learn More
  • Watlow Enclosure Heater
    WATROD
    ENLCOSURE HEATERS by Watlow
    PREVENT FREEZING and CONDENSATION
    IN ELECTRICAL and MECHANICAL HOUSINGS
    Learn More
  • Watlow ECO-HEAT System
    ECO-HEAT® SYSTEM
    IDEAL for DIESEL GENERATOR
    AFTERTREATMENT SYSTEMS
    by Watlow
    Learn More

LEARN MORE: To request a duct heater quotation, fill out our application worksheet and email it to our technical sales department at sales@thermalsolutionsoftexas.com

Industry Leaders

Partnering with YOU to optimize thermal performance

Custom Solutions

Decreased design time and improved efficiency

Support Specialists

Providing superior products and services for individual needs


Duct Heater

Watlow duct heaters are constructed of sturdy 0.430 in. (11 mm) diameter heating elements mounted to a 1/4 inch thick steel flange. Modular duct heater modules are removable through the housing of the assembly, eliminating the need to pull the complete heater from ductwork, reducing downtime costs.

  • Long life alloy 800 sheath resists corrosion/oxidation while protecting resistance coils against contamination
  • MgO insulation filled elements compacted to rock hard density maximizes dielectric strength, heat transfer and life
  • Field replaceable elements permit easy service and reduces downtime
  • WATROD hairpins are recompacted after bending to eliminate hot spots and electrical insulation voids

Request a Quote

To request a detailed request for quote, please fill out our Duct Heater Application Worksheet
and return it to our technical sales department by email at sales@thermalsolutionsoftexas.com or by fax at (281) 351-4324. For faster service, give us a call at (866) 351-4328.


SR Enclosure Heater

Designed for freeze and condensation protection, Watlow's enclosure heaters are rugged, reliable and safe to operate. A thermostat can be attached to the heater or mounted separately. Pictured are enclosure heater units with thermostat on heater in foreground and heater with remote thermostat in background.

  • Pressure sensitive adhesive mounting for quick and easy installation
  • No exposed electrical connections creates a safe and reliable operation
  • Multiple lead options accommodate a variety of wiring requirements
  • Several standard thermostat set points ensures protection against freezing with minimal energy consumption