Books To Buy
Slinky Installation Guide
Everything you need to know about installing Slinky™ ground heat exchangers.
Guides to Download
How GSHP Work
Start with the basics with this easy to read introduction to the physics of heat pumps.
ASHP vs. GSHP
Level the playing field when comparing ground source heat pumps to air source heat pumps.
Let Geo LEED The Way
Learn about LEED certification and how geothermal systems can be used to achieve LEED status.
Measure GSHP Efficiency
A DYIers guide to measuring the efficiency of forced air geothermal heat pumps.
EPA Space Conditioning
A thorough examination of the pros & cons of advanced residential space conditioning equipment.