Sigma Thermal, Inc.

Direct Fired Heaters

Sigma Thermal offers convection style, API 560, and non-API radiant convective heaters from 1MM to 80MM Btu/hr.

A direct fired heater is a style of heater in which a burner provides hot gasses that transfer their heat energy to a process liquid or gas flowing directly through coils installed inside the heater vessel. Direct fired heaters can utilize radiant and/or convection heat transfer sections, and can be configured in many different ways depending on the customers’ specific requirements. Due to the flexibility in design, virtually any style of furnace burner can be used in single or multi-burner configurations. For help selecting the right solution for your project, contact our application engineers today.