Category Archives: News

Home Geothermal Project Delivered to Long Island

National Grid, one of the largest investor-owned energy companies in the world—covering Massachusetts, New York, Rhode Island and the UK—is now the first utility country in the U.S. to bring home geothermal energy to a residential community.

GEO Niii is proud to be a part of this project. It was the GEO Niii geothermal pump used in the installation in Riverhead, Long Island.  Ten homes in Glenwood Villiage will benefit from the loop system installed and now functioning to provide clean, affordable energy for the residents.

New York State has been a leader in finding ways to provide a cleaner more reliable and more affordable electric grid for the future.  The State has set a goal to reduce its production of greenhouse gases 40% by the year 2030.

We are looking forward to more projects like this in New York State and all over the U.S.

Utility Ground Loop Service Model Transforms Geothermal Heating And Cooling Costs

While geothermal heating and cooling has been growing in popularity, one of the barriers to wider adoption has been the additional cost of the ground loop.

Geothermal heating and cooling, also known as GeoExchange, is a heating and cooling technology that surpasses most traditional and alternative systems by simply moving heat from its source to another area.

In the heating mode, a geothermal or ground-source heat pump extracts energy from the earth—typically using a buried water loop—and moves it indoors. In the summer, the heat pump moves heat from indoors into the relatively cool earth, via the water loop. The result in both seasons is that less energy is needed than with conventional air-to-air heat pumps, natural gas, or oil heating systems. There are two major components to a geothermal system: the heat pump and air-duct portion, and the in-ground water loop well system.

The ground loop may represent an additional approximately 30 percent to 40 percent additional cost compared to a traditional HVAC system…

Read more here… Utility Ground Loop Service White Paper

New Geothermal Heat Pump Technology Book

ASHRAE, the American Society of Heating, Refrigerating, and Air-Conditioning Engineers, has published a new book on Geothermal Heat Pumps.

This new book, Geothermal Heating and Cooling: Design of Ground-Source Heat Pump Systems, completely updates the last book, Ground-Source Heat Pumps: Design of Geothermal Systems for Commercial and Institutional Buildings, which was published in 1997. This new book contains the -most recent info on design and engineering available, supporting the training by the International Ground Source Heat Pump Association’s Certified Geoexchange Designer program.

You can order the new book at

New Speaking Engagement – Minnesota Geo Association

Geo-Nii’s own Jack DiEnna will be a keynote speaker at the Minnesota Geo Association onCapture March 24th, 25th, & 26th.

Jack will be speaking on the topic “Geothermal Heat Pumps ‘The Playbook’ – Now More Than a ‘Niche’ Market”

Minnesota Geo Association Website

Conference Info