Stelter & Brinck Indirect Fired Air Heaters
Stelter & Brinck Indirect Fired Air Heaters
Indirect Air Heater Request For Quote Data Sheet


In-duct indirect fired air heater for drying Clean, hot air is provided by S&B's 'in-duct' IAH-ST
Maximize space in your layout with our straight-through heater Maximize space in your layout with our compact, Straight-Through Air Heater
Highly Efficient, Compact, Straight-Through Indirect Air Heater Highly efficient, compact, Straight-Through Indirect Air Heater
Clean, hot air regardless of what product you're drying IAH-ST provides clean, hot air regardless of what product you're drying!
Indirect Fired Air Heater that can be placed right into your duct-work Our IAH-ST is an Indirect Fired Air Heater that can be placed right into your duct-work!

This unit is small and mighty - our most compact indirect air heating model, our straight-through indirect air heater does not lack in efficiency, reliability or performance.

Whether you’re drying hydrated lime, spray drying dairy products, or drying chemicals and pharmaceuticals, S&B’s IAH-ST heaters are ideal for applications that require hot, clean air. With heat exchangers that can be mounted on the positive or negative side of the process, the straight-through heater will maximize space in your layout. Up to 1200°F process air outlet temperature is standard for this unit (for higher temp., call factory). Our IAH-ST is custom designed to meet your project’s requirements and to be industrial, reliable and “plug and play”.

S&B's IAH-ST units are designed, engineered and manufactured to provide consistent and reliable performance. These process air heaters are easy to use and install, among the features offered are:

  • Fully welded, all stainless heat exchangers.
  • Process contact surfaces built of non-rust, high-grade stainless: 304, 316 & 321 available.
  • Prewired to control enclosure for interconnection to customer's DCS, or remote operator station.
  • Integral control panel with annunciator, FM approved high temperature limits, air pressure switches, PID digital temperature control (single and multi-loop available), flame safety relay, main power disconnect, control transformer, and hot side blower motor starters. UL 508A priced per request.
  • Built to meet your construction standard requirements.
  • Insulated and skinned combustion chamber.
  • Rigorously tested and tuned, in-house, prior to shipment. On-site start-up and on-going maintenance available world-wide through S&B’s Field Service Department.


  • Recirculating or non-recirculation configuration.
  • Horizontal or vertical available.
  • Low emissions option available.
  • Control interface for PLC or DCS operation.
  • Process supply blowers and ductwork.
  • Secondary heat recovery for producing hot air.

A product of more than 95 years of experience with process heat equipment, Stelter & Brinck straight-through indirect air heater units provide unmatched performance, in a compact design. Advantages:

  • Single point connections for fuel and power.
  • Thermal efficiencies to 90%.
  • High energy turn-down.
  • High & low process air temperatures.
  • PID digital process temperature control.
  • Indirect air heaters can be provided to fire on natural gas, and propane gas.
  • Flame peep sight, pressure test taps and stainless steel I.D.’s throughout.
  • Designed for easy cleaning and maintenance.
  • All welded stainless steel heat exchanger.
  • Robust, reliable system provides heat without free from combustion by-products.

Straight-Through Indirect Fired Air Heater RFQ