The Right Book at the Right Time

"We each must do our share in ensuring that future generations have safe and clean energy sources while not compromising our comfort or budget. Geo Power shows how that is possible with ground-source heat pumps."

-Lawrence A. Muhammad, IGSHPA Certified National Trainer, IGSHPA Accredited Installer, and Professor at Michigan Community Colleges

Ideal for homeowners, home-building partners (architects, builders, lenders, inspectors), and those training for the geothermal industry.


Geo Power: Stay Warm, Keep Cool and Save Money with Geothermal Heating & Cooling
Updated & Expanded Edition

by Donal Blaise Lloyd
ISBN 978-1-936555-58-1
5.5" x 8.5" pb, 208 pages, illustrated
published 2015

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Geo Power: Stay Warm, Keep Cool and Save Money with Geothermal Heating & Cooling

A straight-talking book on why ground-source heat pumps (GHPs) are the best choice for heating and cooling new or existing homes in any climate and how this reliable, silent, non-polluting way of extracting free energy from the earth saves money year after year.

Ideal for homeowners, anyone training for the geothermal industry, and home-building partners (architects, builders, lenders, inspectors), Geo Power explains the various GHP system options and why installing a geothermal system is a smart investment. Then author Don Lloyd goes one step further and provides insights into the simple science of this proven heat-pump technology.

GeoPower details

  • Contents

    This updated & expanded edition includes a more comprehensive science & technology section for geothermal students / trainees and installers, and savvy homeowners. Geothermal system options: open loop vs. closed earth loops; either horizontal or vertical, for water-to-water or water-to-air HVAC systems. The importance of finding a qualified contractor. Important money concerns: costs, tax credits, payback time, increased home values. Who is using geothermal energy, including the author's firsthand experiences and Earth Smart Home profiles from around the country. How solar electricity can be used to power the system, plus other future trends. Understanding the basic principles of heat pumps and Read More
  • Reviews

    "Lloyd expands his 2011 Smart Guide to Geothermal by delving deeply into the nifty science behind ground-source heating. "Simple in concept, complex in practice," geothermal heat pump systems (GHPs) use the earth as both a heat source and heat sink. Heat is transferred from ground to building via an underground piping loop that uses soil temperature to warm or cool the refrigerant (or water) circulating within. Various kinds of ground-source systems (open loop, closed loop, direct exchange, etc.) and pipe layouts are discussed and illustrated. Although growing in popularity, GHPs are underutilized because, writes Lloyd, they are relatively unknown and Read More
  • Author Don Lloyd

    Don Lloyd is an electrical engineer now retired from Honeywell after 35 years in marketing, engineering and project management. He has extensive experience in taking complex subjects (such as laser gyroscopes or mosaic infrared detectors) and explaining how they work in terms understood by the general public. He is at his best when giving lectures describing how geothermal heat pumps work and why they are the ideal heating and cooling solution for homeowners. Prior to entering the geothermal world, he operated his own software consulting business as a Microsoft Certified Software Professional. He also served as an officer in the Read More
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