Geothermal Heat Pumps


Ground source heat pumps are one of the smartest way to heat and cool a building. They can reduce HVAC costs from 50% to 80%. It is a proven technology that has been around for decades.

Amazing Tools and Courses

Advanced Training

Deep Boreholes in GSHP Systems: Pressure Considerations & Installation Practices

Factors such as space limitations are forcing engineers to utilize deep boreholes to meet design requirements for Ground Source Heat Pump (GSHP) systems.
In such cases, hydrostatic pressures must be considered to ensure successful installation can take place. This short course, led by expert Ryan Carda, P.E., focuses on the necessary calculations along with the recommended […]

Geothermal HVAC Design: From Building Loads to Bore Field Design

Learn geothermal HVAC design fundamentals, with emphasis on building load (residential, commercial and institutional) development, leading to bore field specification.
Watch Al’s lectures (one introductory, the other highly technical), and download a Geothermal HVAC Design Performance Simulator excel file in his brand new, $45 HeatSpring course.

Who should enroll?

Engineers, HVAC contractors, building owners, and those who […]

John Siegenthaler Investigates: Low Ambient Air-to-Water Heat Pumps

Low Ambient Air-to-Water Heat Pumps: An emerging renewable heat source for North American hydronic systems.
Electrically powered heat pumps, in many varieties, are destined to play an increasingly important role in heating and cooling buildings around the world.

Heat pumps capture low grade heat from solar-resupplied sources such as outside air and soil several feet below the earth’s […]

3 Ground Source Heat Pump (GSHP) System Design Questions

Expert Instructor Ryan Carda discusses vertical boring systems, horizontal ground loops and Energy Recovery Ventilator ducting on the IGSHPA Certified GeoExchange Designer (CGD Plus) Training discussion board…
Student 1: Would you say that the addition costs associated with vertical boring are greater than the cost of extra piping necessary for a horizontal system?

Ryan Carda: To a point – HDPE pipe itself is […]

NYC Sets Precedent for Requiring Geothermal Certifications

The New York City Council recently passed local law 0609-A-2015 stating that all new city buildings or city-owned buildings undergoing a HVAC retrofit must use geothermal if the ‘geothermal system has the lowest net present value of all alternatives considered.’ This legislation is a big deal for designers and installers of geothermal projects because it requires a minimum […]