Used in processes that require a hot air source, Direct Fired Air Heaters are ideal for applications that are not sensitive to the by-products of combustion. Direct Fired Process Air Heaters, as their name implies, apply heat directly to the product air stream. These process heaters are used in heat treating, drying, curing, mining, printing and many other industries.
Stelter & Brinck designs, manufactures, and provides service for 3 types of direct gas-fired or oil-fired air heaters: duct, gun style and packaged.
Stelter & Brinck’s Duct Heater Models:
Fresh Air Duct Section Heater – uses the oxygen present in the air stream for combustion, eliminating the need for an additional combustion air source
Recirculating Duct Section Air Heaters- used for dirty air streams and features a combustion blower
Selective Catalytic Reduction Heater- designed to be either a start-up air heater or a post-heater where NOx is present in the air stream
Unique Duct Style Process Air Heater Feature: designed to fit into the processes’ duct work
Duct Air Heater Applications: baking, curing, heat treating, oilfields, drying, and many more
Picture of a Stelter & Brinck Duct Air Heater:
Gas only burner
Oil only burner
Combination gas and oil fired burner
Unique Duct Style Process Air Heater Feature: ideal for those processes that require larger mass flows, have recirculating process air streams, higher temperatures, or fuel oil operation
Gun Style Heater Applications: same as duct style
Picture of S&B Gun Style Air Heater:
Natural gas fired burner
Propane fired burner
Butane fired burner
Unique Packaged Process Air Heater Feature: complete packages; each air heater is completely prepiped and prewired and complete with flame safety controls, process temperature controls, process blower, outlet transition, and motor starters; arrives on-site ready to be installed
Packaged Heater Applications: dye and paint manufacturing, molds processing, ect.
Picture of Stelter & Brinck Packaged Air Heaters:
Low emission air heater models and stainless steel construction are available for each unit by Stelter & Brinck. For more information on our direct fired air heaters, please visit our website: