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State-of-the-Art Air-to-Air Energy Recovery: A Trane ENL Program Preview

In this Engineers Newsletter LIVE (ENL) program, the various technologies used for air-to-air energy recovery are explored, reviewing considerations for integrating these technologies into HVAC systems and explaining proper control.

The use of air-to-air energy recovery to reduce total building energy consumption continues to be popular, especially with decarbonization efforts and more stringent building code requirements. In our latest Trane® Engineers Newsletter LIVE (ENL) program, we discuss various technologies used for air-to-air energy recovery, review considerations for integrating these technologies into HVAC systems, and explain proper control.

This ENL features applications engineers Greg DuChane, Ronnie Moffitt, John Murphy, and Eric Sturm. After viewing this program, you should be able to:

  • Summarize how air-to-air energy recovery technologies can be applied to either precondition outdoor air or temper (reheat) supply air.
  • Understand how the effectiveness of an air-to-air energy recovery device is determined.​
  • Explain ASHRAE® Standard 90.1 prescriptive requirements for exhaust-air energy recovery.​
  • List common air-to-air energy recovery technologies.​
  • Describe methods to reduce recirculation (cross-leakage) of exhaust air when using an air-to-air energy recovery device.

Viewing this ENL

A recording of this program is now available to view on-demand from the Trane Education Center.

More about Trane Engineers Newsletter LIVE (ENL) programs

Trane ENL is a series of video programs focused on the design and control of HVAC systems, industry issues (sustainability, decarbonization, indoor air quality, acoustics, etc.), or codes and standards. The content is technical and educational, but non-commercial. The target audience is HVAC system design engineers; however, some programs may also be of interest to others in the industry.

Previous programs are available to view on-demand, and free of charge, in the Trane Education Center. In many states, ENL programs meet the requirements for earning Professional Development Hours (PDHs) to help meet the continuing education requirements of your professional engineer license or other certification.

State-of-the-Art Air-to-Air Energy Recovery


About the Author

Eric Sturm, Applications Engineer




Eric joined Trane in 2006 after graduating from the University of Wisconsin – Platteville with a Bachelor of Science degree in mechanical engineering. Prior to joining the applications engineering team, he worked in the Customer Direct Services (C.D.S.) department as a marketing engineer and product manager for the TRACE™ 700 load design and energy simulation application.

In his current role as an applications engineer, Eric’s areas of expertise include acoustics, airside systems, indoor agriculture, and indoor air quality. He is currently involved with ASHRAE® as a member of the Standard 62.1 project committee, the indoor agriculture technical committee, and the sound and vibration technical committee. Eric is the recipient of the ASHRAE Distinguished Service Award and Young Engineers in ASHRAE Award of Individual Excellence.