Specialists in Sustainable Energy Systems

Lisa Meline, P.E.
Consulting Engineer

Lisa Meline is the owner and principal engineer of Meline Engineering. Her background includes experience with NASA Ames as a facilities engineer and project manager and Apple Computer as an engineering manager. Since founding Meline Engineering in 1995, she has become recognized as an authority on geothermal heat pump systems. Ms. Meline speaks regularly on the topic of geothermal heat pump systems at industry events.

Ms. Meline is a licensed professional engineer and Certified Geoexchange Designer. She is past Chair of ASHRAE TC6.8 Geothermal Heat Pump and Energy Recovery Applications, and holds memberships with ASME, ASHRAE, CaliforniaGeo and GEO. Ms. Meline is an ASME Fellow and is a recipient of ASME’s Dedicated Service Award.

Ms. Meline serves on the Technical Committee responsible for updating ANSI/CSA/IGSHPA C448 Series 16, “Design and installation of ground source heat pump systems for commercial and residential buildings.”

Ms. Meline is also currently serving on the Technical Advisory Committee formed by the California Department of Water Resources to provide review and comments on the State Well Standards (Bulletin 74) Update as they pertain to geothermal heat pump systems and in particular the ground heat exchanger or ground loop system.


Master of Science, Mechanical Engineering, 1996, California State University, Sacramento

Bachelor of Science, Mechanical Engineering, 1989, California State University, Sacramento

Associate of Science, 1985, American River College, Sacramento

Licenses & Certifications

California Professional Engineer’s License

Colorado Professional Engineer’s License

Nevada Professional Engineer’s License

Utah Professional Engineer’s License

Certified Geoexchange Designer


Meline, Lisa and Steve Kavanaugh, 2019, “Geothermal Heat Pumps – Simply Efficient.” ASHRAE Transactions, Volume 125, Part 2. pp 556-576.

Meline, Lisa and Steve Kavanaugh, 2016, "Grounded in Reality" Engineered Systems, Vol. 33. No. 12 pp 28-35.

Kavanaugh, Steve and Lisa Meline 2016, “Long Term Commercial GSHP Performance, Part 7: Achieving Quality.” ASHRAE Journal 55 (2), pp. 26-32.

Meline, Lisa, 2013, “GHP Piping Systems.” ASHRAE Journal 55 (3), pp. 86-88.

Speaking Engagements

ASHRAE/NYSERDA Community Heat Pump Systems Webinar Series, a series of 17 Webinars offered October 13, 2021 through May 25, 2022.

CaliforniaGeo Three-Module Webinar Series, “Ground Source Heat Pump Design Course for Building Professionals.”  Module 3 presented on November 4, 2021.

NY-GEO 2021 Webinar Series “Grounded in Reality: Better Ground Source Heat Pump Design; Navigating Codes, Standards and Practical Experience in GSHP Design; Burying Mistakes: When a GSHP Designer Trusts But Does Not Verify.” Albany, New York, September 7, 14, and 21, 2021.

ASHRAE Virtual Annual Meeting, “Considerations for District Energy Systems Utilizing Geothermal Heat Pumps.” June 2021.

CaliforniaGeo Three-Module Webinar Series, “Ground Source Heat Pump Design Course for Building Professionals.”  Module 3 presented on January 26, 2021.

ASHRAE Winter Meeting, “Black, Grey and Almost Clean: Energy Recovery with GSHPs,” Orlando, Florida, February 3, 2020.

ASHRAE Annual Meeting, “ASHRAE 125th Anniversary: Retrospect on Geothermal Heat Pumps and Refrigerant Properties,” Kansas City, Missouri, June 24, 2019.

ASHRAE Winter Meeting, January 14, 2019, “Ground-Source Heat Pump Design for a Moderate Residence in Northern, CA.” Atlanta, Georgia.

SIERRA DELTA ASHRAE Section Meeting, November 8, 2018, “Designing a Ground Heat Exchanger.“ Modesto, California.

IGSHPA 2017 Technical Conference and Expo, "Ground Loop in the Vineyard?," March 14, 2017 Denver, Colorado.

Geo-Connections Lecture Series, "Burying Mistakes" presented via webinar February 16, 2017.

2016 ASHRAE Winter Conference, “Ground Source Heat Pumps Get Bi-National Attention,” January 25, 2016, Orlando, Florida.

IGSHPA 2015 Technical Conference and Expo, "Geothermal Heat Pumps: A Pathway to Zero Net Energy (ZNE) for Schools, Homes, and Businesses,” Thursday, October 8, 2015, Crowne Center, Kansas City, Missouri.

Seminar/Webinar: Creating Zero Net Energy Buildings with Off-the-Shelf Technologies, sponsored by California Geoexchange Organization and San Jose City College, “A Pathway to ZNE for Schools, Homes and Businesses,” April 23, 2015.

2014 ASHRAE Annual Conference, “Ground Source Heat Pumps State of the Art: Design, Performance and Research Track”, Seminar Chair for “Assessing a Project Site for Geothermal Heat Pump Applications”, Speaker for “Ground Source Systems Commissioning and Closeout: Unique Issues, Avoiding Fatal Flaws and Ensuring Client Satisfaction”, June 28-July 2, 2014, Seattle, Washington.

AiCARR,”Design of Commercial Ground-Source Heat Pumps” MCE 2014, Milan, Italy, March 20, 2014.

National Ground Water Association, “Women in Geosciences Webinar,” October 17, 2013.

Sacramento Municipal Utility District, “Introduction to Geothermal Heat Pump Systems,” September 19, 2013, Sacramento, California.