Author Donal B. Lloyd

DonLloyd-headshot72dpiRGBDon 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 US Army. Don lives in the Hudson River Valley region of New York State with his wife, artist Martha Lloyd, in their new home where the oil trucks pass by but never stop. “Installing a geothermal heat pump was one of the best decisions I ever made!”


Lawrence A. Muhammad is an International Ground Source Heat Pump Association (IGSHPA) Certified National Trainer, having conducted numerous trainings throughout the US. As a community college professor, he teaches a wide variety of geothermal courses at three colleges in Michigan. Putting his teaching and training skills to work, Lawrence is also a licensed residential builder, an IGSHPA Accredited Installer, a NATE Proctor, and the designer / developer of the apprenticeship program for the Geothermal Innovations Gii4 proprietary heat exchanger. His geothermal training company, Geo NetZero, is committed to providing a skilled and qualified workforce throughout America.




Books that inspire and empower the individual to make a difference.