Straight-Through Indirect Air Heater (IAH-ST)
Compact & Clean Hot Air for Industrial Processes
Compact yet powerful, Stelter & Brinck’s Straight-Through Indirect Fired Air Heater (IAH-ST) is our most space-efficient indirect air heating model—engineered for maximum performance, reliability, and clean heat output.
Ideal for processes that demand contamination-free hot air, the IAH-ST excels in applications such as drying and chemical or pharmaceutical production.
Designed for versatility, these indirect process air heaters offer the following options:
- Handle process air flow L to R or R to L, “straight-through” the unit
- Heat exchangers that can be mounted on the positive or negative side of the process to maximize space in your plant’s layout
- Non-Recirculating or recirculating options available
- Horizontal & vertical layouts available
Indirect Air Heater with Process Air Blower & Slate Controls
Indirect, Straight-Through, Air Heater with Process Air Transitions
Compact, Straight-Through Air Heater
Straight-Through Indirectly Fired Process Air Heater for Industrial Applications
Highly efficient, Straight Through Indirect Heater with Process Air Transitions
Stainless Indirect Fired, Straight-Through, Air Heater
Vertical, Straight-Through, Indirect Heater
FEATURES
Stelter & Brinck’s IAH-ST Straight-Through Indirect Fired Air Heaters are designed, engineered, and manufactured for consistent, long-term, and reliable performance. Built for simplicity and dependability, these process air heaters are easy to install, operate, and maintain.
Standard Features Include:
Fully welded, all-stainless steel heat exchangers for superior durability
High-grade process contact materials available in stainless 304, 316, or 321
Prewired control enclosure for seamless integration with your DCS or remote operator station
Integral control panel featuring annunciator, FM-approved high-temperature limits, air pressure switches, PID digital temperature control, flame safety relay, main power disconnect, control transformer, and hot-side blower motor starters (UL 508A available upon request)
Built to meet your construction standards and plant specifications
AWS D1.1, D1.3, and D1.6 certified welders provide high-quality fabrication
Insulated and skinned combustion chamber for operator safety and energy efficiency
Factory tested and tuned in-house by Stelter & Brinck’s Quality Control Team prior to shipment
Global field service and support, including on-site start-up, preventative maintenance, and access to S&B’s Parts Department
CUSTOM DESIGN OPTIONS:
Each IAH-ST unit can be custom-engineered to fit your specific process requirements:
Recirculating or non-recirculating configurations
Horizontal or vertical layouts
Low-emission burner options
PLC or DCS control interface compatibility
Process supply blowers and transition ductwork
Secondary heat recovery systems for additional hot air generation
ADVANTAGES OF A STELTER & BRINCK STRAIGHT-THROUGH INDIRECTLY FIRED AIR HEATER:
A product of more than 100 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 both fuel and power simplify installation
Thermal efficiencies up to 90 percent
High-energy turndown capability for flexible operation
Suitable for high or low process air temperatures
PID digital temperature control for precise, stable performance
Compatible with natural gas or propane fuel
Flame observation port, pressure test taps, and stainless steel ID tags for easy inspection
Engineered for simple maintenance
Provides clean, combustion-free hot air for contamination-sensitive processes
