Portable - Circulating Heaters

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Known for Reliability- Durability- Serviceability- Parts Availability

  • Rugged quality construction for continued mobile use 
  • Made to thrive in high dust construction environments
  • Designed for ease of maintenance and repair in the field
  • Corrosion resistance
  • Superior parts access from our large dealer network
  • 24 hour Online access to service manuals and trouble shooting videos 
  • Phone Technical support from our team of engineers on installation, sizing and advanced trouble shooting.
  • Warranty – 12 month protection from defects in material and workmanship 

L.B. White is the only U.S. manufacturer of commercial grade temporary gas construction heaters and is recognized as a leader in portable heating for over 50 years. L.B. White offers a full line of direct-fired convection, portable forced air, kerosene, circulating and ductable construction heaters and torches in addition to the Director, indirect fired heater.


  • Big Bertha

Circulating-Heaters

Designed for large, open-air area heating, L.B. White circulating heaters provide large Btu/h outputs using unique rugged steel case designs, and include powerful paddle-blade fans and cast-iron burners to circulate high volumes of heated air easily and effectively.

Strong, durable and designed to withstand long hours of operation, L.B. White circulating heaters are ideal for large space heating such as docks, warehouse openings, concrete drying, or brickwork. All Jet, Twin Jet, and Big Bertha natural gas or liquid propane gas heaters feature pilot ignition for dependable starts, as well as standard or optional thermostatic controls for automated temperature management.… you want the leader in Construction heating equipment on the job… L.B White

Call our technical experts to help you select the correct size and quantity of heaters for your job site. 

Technical Support – 1-800-345-7200 


Literature / Specifications


Circulating Heaters
Portable Construction Heating Catalog

Owners Manual


Jet 200 / Twin Jet 400
Big Bertha 334 336