HVAC Strategies

2018 HPC National Conference Session

Improving the Field Performance of Heat Pumps in Cold Climates

Tuesday, April 24
3:30 PM - 5:00 PM
Location: Franklin 4 (4th Floor)

Air-source heat pumps (ASHPs) have been installed in US homes for decades. However, the latest generation of ASHP technology has increased their appeal – and market share – in colder climates of the US (IECC climate zones 4 and higher). While many are excited about the benefits that recent advancements in variable-speed ASHPs can bring to cold climate regions, there is concern these systems may be improperly installed and operated. Despite proven performance in cold climates, sizing and installation issues can reduce performance and energy savings, sometimes significantly. Join this session to hear about newly available tools and resources, and a summary of some research results that can help to achieve both consumer and installer confidence in ASHPs for practitioners and programs alike.

Learning Objectives:

Steve Dunn

Project Manager
U.S. Department of Energy

Steve Dunn has over twenty years of experience working to advance innovative energy and climate change solutions in the nonprofit sectors and government. In his current position, he is a Project Manager with the U.S. Department of Energy, Building Technologies Office, in the Residential Buildings Integration program, supporting initiatives focused on energy efficiency financing, advanced HVAC technologies and local governments. At DOE, he led the project management team responsible for a $500 million portfolio of 40 award recipients under the Better Buildings Neighborhhood Program. Prior to DOE, he worked at the U.S. Environmental Protection Agency in Washington, DC, where he led national efforts to advance clean energy and climate policies at the state and local level.


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Bruce Harley

Bruce Harley Energy Consulting

Bruce Harley is a nationally recognized expert on energy efficiency. With three decades of experience retrofitting and analyzing homes and HVAC systems, teaching building science, developing energy software and savings models, and developing technical policy and standards, Bruce is known for his ability to provide complex information in an engaging and understandable style. He has published three books with the Taunton Press, and received several national awards. Bruce main focus is currently heat pumps: developing realistic lab tests and models, design and installation guidance, consulting with state and federal agencies, utility companies and programs, monitoring systems in the field and educating stakeholders at all levels.


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David Lis

Director of Technology & Market Solutions
NEEP (Northeast Energy Efficiency Partnerships)

Dave oversees NEEP’s Technology & Market Solutions team, which is currently leading regional market transformation initiatives for Air-Source Heat Pumps (ASHP), Strategic Energy Management (SEM), Home Energy management Systems (HEMS), Strategic Electrification and Appliance Standards. In this capacity, Dave provides strategic direction for the teams’ development, management and integration with other NEEP teams. Dave also serve as a member of NEEP’s Senior Management Team.

Dave began his professional career as a high school math teacher in Boston. Prior to joining NEEP, Dave also spent two seasons living in Aspen, CO working as the Manager of the Annabelle Inn. His undergraduate degree is in physics from Middlebury College.


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Improving the Field Performance of Heat Pumps in Cold Climates


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