Prairie Engineering completed their first geothermal project in 1983 and have completed over 100 successful geothermal projects to date. Notable projects include the Grand International Inn, YMCA, Zion Lutheran Church, and Washington School in Minot; the Bank of North Dakota and Workforce Safety and Insurance Building in Bismarck; and the Rough Rider Motel in Medora. The WSI Building achieved the Energy Star "Silver" rating for energy consumption. Prairie Engineering, P.C. completed the technical portion of the successful grant application that funded the Fort Berthold Community College geothermal retrofit project.
Grand International Inn Geothermal Conversion
Minot, North Dakota

The International Inn had a conventional heating and air conditioning system. 168 geothermal wells were installed. The initial retrofit utilized water-to-water heat pumps to interface with the existing HVAC system. The second phase involved the installation of extended range geothermal heat pumps to serve the Convention Center and Reflections meeting room. Water-to-water heat pumps were utilized to heat the main pool, spa, and domestic water heating for the laundry and south tower. Construction was completed in 2008.
Fort Berthold Community College
Geothermal Conversion
New Town, North Dakota

Lon Drevecky assisted Kyle Patterson Ed.D., M.P.H. Director of Research and Development with the successful grant application that funded this project. This project came within budget and was be complete four months ahead of schedule in 2010. 126 wells were drilled in two remote well fields. Multi-stack extended range water-to-water heat pumps and a mix of extended range water-to-water and water-to-air heat pumps were utilized.
Parshall Elementary School
Geothermal Conversion
Parshall , North Dakota

This project was a complete retrofit of the current HVAC system. There were so many problems with the existing system that we replaced the mechanical system 100%. The project featured air-to-air heat exchangers for ventilation heat recovery, extended range water-to-air heat pumps and sixty 200 foot geothermal wells.
MAFB 168 Room Dormitory
Minot Air Force Base, North Dakota

This is a design build project. Prairie Engineering provided the mechanical design on this project. Extended range stacked water-to-air heat pumps were used for this 168 room dormitory. Air-to-air heat exchangers reduced ventilation loads. Domestic water preheat via geothermal will be used. (130) 200 foot deep wells were utilized. The well field was located 2 blocks from the building. This design will be used as the prototype for future geothermal dormitories constructed at Northern Tier Air Force Bases.
MAFB Renovate Dorms 205 & 207
Minot Air Force Base, North Dakota

We just finished the design work for the retrofit of two dormitories at Minot Air Force Base. The new HVAC system will feature air-to-air heat recovery and extended range geothermal heat pumps. This project is currently under construction. Each dormitory will utilize (40) 200 foot deep wells as its heating/cooling sink.
Minot Family YMCA Addition
Minot, North Dakota

Multi-stack centralized water-to-water heat pump was utilized for Phase II of the Minot YMCA. This unit provides chilled water for summer air conditioning, while simultaneously providing hot water for domestic water heating. The unit provides warm water for the air-to-air heat exchanger ventilation system and radiant floor heat during the winter season.