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What Engineers Need to Know: The Minimum Efficiency Standards for Direct Expansion – Dedicated Outdoor Air Systems (DX-DOAS)

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Discover how Dedicated Outdoor Air Systems (DOAS) are transforming HVAC design by enhancing humidity control and energy efficiency, as the new Department of Energy (DOE) minimum efficiency standards become effective in May 2025.  With this new efficinecy standard DX-DOASes will be listed to the DOE and subject to enforcement redefining compliance for engineers. Join our webinar to explore the critical implications of these regulations, including an in-depth look at AHRI standards and the innovative Trane Horizon solution tailored for DOAS applications.

Dedicated Outdoor Air Systems (DOAS) are pivotal in modern HVAC system design, significantly enhancing humidity control, energy efficiency, and indoor air quality. In response to evolving energy conservation needs, the Department of Energy (DOE) has issued a final rule establishing stringent energy efficiency minimums for direct expansion-dedicated outdoor air systems (DX-DOASes). These requirements align with the latest Air-Conditioning, Heating, and Refrigeration Institute (AHRI) 920-2020Standard.

Learning Objectives: 

  • Understanding DOAS: Gain a clear understanding of what a dedicated outdoor air system is and its role in HVAC design. 
  • AHRI Standards: Learn about the AHRI 920 2020 standard and how it differs from AHRI 340/360. 
  • DOE Efficiency Standards: Understand the minimum efficiency standards for DX-DOAS equipment as mandated by the Department of Energy. 
  • Industry Implementation: Discover how new standards are being implemented across the industry and what engineers need to be vigilant about. 

Webinar Details

Date: November 19, 2024

Duration: 1 hour

Meet the Speakers

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Kristin Myers, Portfolio Manager - Outdoor Air, Trane 

Kristin Myers is the product manager for Trane’s DOAS (Dedicated Outdoor Air Systems) portfolio. She leads the portfolio growth strategy, focusing on customer needs, market trends, and competition. She collaborates with engineering, operations, sales, and quality teams in the development and implementation of advanced DOAS solutions, ensuring they meet market demands and exceed customer expectations. With over 15 years of experience across three industries, she has demonstrated results in driving product development success and organizational growth. Kristin holds a bachelor’s degree in engineering and management from Clarkson University, a master’s in Organizational Leadership from Quinnipiac University, and is PMP certified. 





Adam Froman, National Sales Director, KCC 

Adam is the National Director at the Trane Horizon manufacturing plant in Louisville, KY. Adam has spent the past 7 years specifically focused on design parameters and improvements in applications utilizing outdoor-air systems; as well as the impact that properly designed outdoor-air dewpoint has on space relative humidity year round. 

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