Watlow designs and manufactures industrial heaters, temperature sensors, controllers and supporting software as well as assemblies – all of the components of a thermal system

Watlow partners with its customers to optimize thermal performance, decrease design time and improve efficiency of their products and applications.

Watlow brings its experience to numerous industries, including semiconductor processing, environmental chambers, energy processes, diesel emissions, medical and foodservice equipment.

Since 1922,  Watlow has grown in product capability, market experience and global reach. The company holds more than 450 patents and employs 2,000 employees working in nine manufacturing facilities and three technology centers in the United States, Mexico, Europe and Asia. Watlow also has sales offices in 16 countries around the world. The company continues to grow, while the commitment remains the same – to provide its customers with superior products and services for their individual needs.


Product range:




Air Heaters

Cartridge Insertion Heaters

Circulation Heaters

Flexible Heaters

Fluid Delivery Heaters

Heater Selection Guide

Mineral Insulated Band Heaters

High Temperature Heaters

Immersion Heaters

Nozzle Heaters

Radiant Heaters

Specialty Heaters

Strip Heaters

Tubular Heaters



Lead & Extension Wire

Mineral Insulated Cable

See All

Temperature & Process Controllers

Power Controllers

WATCONNECT® Control Panels

Data Loggers

Integrated Controllers

Mobile Applications


Limits And Scanners

Operator Interfaces



Select a product based on your material

Please select one image matching your system for selecting a proper component

System Component

external liquid watlow

flowing liquid or gas watlow


  • Powercontroller 
  • Process sensor
  • Limit controller
  • High limit sensor
  • Control panel
  • Data loger
  • Electric heater
  • Temp.controller

internal liquid

internal solid

pressurized liquid

non-contact solid watlow vietnam

Industries we serve


Function/ Application

Product example

Clinical Diagnostics

Watlow provides clinical diagnostic equipment OEMs with proven solutions that enable exceptional thermal control.

  • ULTRAMIC® Ceramic heater
  • FLUENT®In-Line Heaters
  • Polyimide Heaters
  • Silicone Rubber Heaters
  • EZ-ZONE controller
  • SERIES EHG SL 10 process controller
  • Temperature Sensor

    Clinical Diagnostics watlow

Energy Processes

Watlow provides energy process equipment engineers with innovative solutions that enable a competitive edge for oil, gas and power generation market leaders:

  • Power Generation
  • Nuclear
  • Hydrocarbon Refining
  • Natural Gas Processing


  • Completed thermal solutions design/ system (OEM)
  • Commercial heaters
  • Thermocouples
  • RTDs
  • Controllers
  • Etc…

    Energy Processes watlow

Foodservice Equipment (F&B)

Watlow provides foodservice equipment engineers with reliable thermal products that deliver a competitive edge (Thermal Solution, Engineering Support to Propriety Designs & Strategic Supplier):

  • Fryers
  • Grills & Griddles
  • Warming Cabinets
  • Ware washers
  • Ovens


Heater,  cooking controller, Power switching, sensors

Foodservice Equipment (F&B) watlow

Semi-conductor Processing

Watlow's solutions are based on an understanding of the Semiconductor Technology Roadmap.

 Watlow meets the thermal challenges and ongoing demands of the industry. We continue to invest in R&D, global manufacturing and sourcing and introductions of new thermal technologies and solutions.  

  • Heaters
  • Temperature sensors
  • Electronics and controls
  • Precision bonded assemblies
  • Cleaning and refurbishment.
  • standard product offerings or develop  custom integrated system solutions.

    Semi-conductor Processing watlow

Diesel Emissions (O&G)

 With over 35 years experience, our thermal expertise is leveraged by industry-leading OEMs to increase fuel economy and reduce CO₂ emissions, reduce the size and cost of the after treatment system and improve emissions performance under a full range of operating conditions.

 Our thermal management solutions are focused on small to mid-sized engines and high horse power engines where ample electrical power is available to create and direct heat where it is needed most; within the aftertreatment system.

EXACTSENSE® Thermocouples      ECO-HEAT® System

EXACTSENSE® Thermocouples  watlow ECO-HEAT® System watlow