For industrial processes which require a controlled source of hot flue gases, Bigelow-Liptak has developed a complete line of hot air furnaces fired by gas, oil, coal or a variety of waste fuels.
 
Our furnace designs can accommodate pressurized, negative or balanced draft operation.  Any fabrication code can be utilized, from ASME to most international requirements.

Thermal outputs from 1 MM Btu/hr (0.25x106 kCal/h) through 400 MM Btu/hr (100x106 kCal/hr) are available in horizontal or vertical configurations.  A variety of refractory lining systems are available including brick, castable, plastic or ceramic fiber.  
 
The majority of our furnaces, however, utilize our unique air-cooled, air-inlet suspended construction.

This style of lining offers a number of advantages including:

• Air-cooled steel shell
• Air-cooling of the suspended refractory construction
• Air sweep of the hot face of the suspended refractory wall
• Increased service life
• Minimal heat loss, resulting in high thermal efficiency
• Allows for accelerated start-ups
• Uniform outlet temperatures due to the progressive introduction of the dilution air.

With hundreds of Bigelow-Liptak hot air furnaces installed worldwide, we have the experience to handle any air heating application.