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Your One Source For Rotary Heat and Mass Transfer Products 
Located in Baton Rouge, LA   225-753-1700

Energy Recovery



Rotor Source provides Ostberg Energy Recovery Rotors – commonly known as energy recovery wheels – and cassettes with lots of sizes to meet a wide range of applications. 

Ostberg is a popular multinational manufacturer of energy recovery equipment. 
The company’s energy recovery rotors have tens of thousands of applications while maintaining a reputation for high quality, low maintenance, and low costs energy recovery wheels.

TA3 models offer industry standard 3A non-migrating molecular sieve desiccant performance on an extra-thick, heavy-duty aluminum substrate specifically developed for the U.S. market. 


Ostberg rotary energy recovery rotors and cassettes are known for:
  • Welded spoke structure maintains tolerance
  • No-maintenance internal bearings
  • Low cost for industrial and commercial applications
  • Standard sizes to 3.5-meter diameter – larger sizes available
  • Standard depth of 100 mm and 200 mm
  • Standard flute height of 1.7 – 2.0 mm offers high capacity, low pressure drop
  • Available in non-standard sizes
  • Complimentary performance software program


  • Standard 3A molecular sieve for high-capacity, water-selective absorption
  • Smooth face for close seal tolerance and minimal leakage


  • Oversized shaft and bearings mean long life and maximum rigidity
  • Welded, heavy-gauge interior spokes for maximum rigidity at hub and outer band
  • Minimizes operating run out of rotor
  • Heavy-gauge cassette and center post resists flex from operating air pressures
  • Rigid cassette structure for low leakage at higher air velocities 
  • Maintains seal clearance
Shaft alignment system


  • 16 standard sizes for a wide spectrum of air volumes
  • 16 different cassette configurations from one standard “universal” cassette 
  • Maximum design flexibility
  • Single and three-phase motors for all sizes 
  • The right voltage for the application
  • Adjustable purge section on all sizes
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