Products / Tube Heaters / premierSchwank

premierSchwank STS Series

Indoor energy efficient tube heater

The premierSchwank is designed for indoor use and can be utilized in sports complexes, arenas and other such applications that require efficient infrared radiant heating. It uses Schwank’s famous infrared radiant tube technology–an affordable heating alternative to conventional indoor heaters, which just warm the surrounding air.


  • Warehouses
  • Manufacturing
  • Distribution centers
  • Vehicle maintenance
  • Airplane hangars
  • Industrial applications

premierSchwank Highlights

The most efficient gas-infrared Schwank tube heaters


  • Our Whisper-Jet technology significantly reduces noise for employee comfort
  • 45,000, 60,000, 80,000, 100,000, 110,000, 130,000, 155,000, 175,000 and 200,000 input BTU/HR models
  • 20”, 30”, 40”, 50”, 60”, and 70” heater lengths
  • Available in single-stage models
  • Aluminized steel
  • UL Certified

Optional accessories

  • ThermoControl Plus
  • TruTemp Thermostat
  • Terminal Elbow Kit
  • Fresh air intake wall cap
  • 4ʺ Horizontal flue vent terminal (wall)
  • #2 Lion chain


  • The long and laminar flame of this tube heater provides an even heat distribution and is easy to install, access, and maintain.
  • 24 or 120 Volt control options.
  • Whisper-Jet technology makes the heater extremely quiet.
  • Schwank’s unique clamshell cabinet design provides easy access and maintenance.
  • Pre-installed igniter and status indicator lights.
  • Flexible system configurations including straight, U-shaped, and L-shaped.
  • 10 year replacement warranty on the infrared radiant tube.


premierSchwank resources

Explore product brochures, case studies & technical information.


Click on the image to view and download PDF.

Case studies



Technical documents

Manual: Model STS-JZ & IQ

Manual: P40


Engineering specs


Get started

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Get in touch

For general inquiries, please call us toll-free (USA & Canada) 1-877-686-3779 or email our experts. 

Where to buy

Schwank reps will help you select the units and designs that best fit your application, at no charge.


Request a design

We can recommend, support specifying, and be a partner through the entire design process.