ECONAR^® Energy Systems - Residential Case Study
Hefel (Doug) Residence - Dubuque, Iowa

Doug Hefel built this home for his family with an outlook towards new technologies. When it came to heating and cooling his home, he wanted a unique system that provided optimum heating and the best cooling possible. He was very impressed when he came across ECONAR GeoSource Heat Pumps that could do both! This residence uses two 6 ton GeoSource 2000 Hydronic heat pumps. These units make hot water, which is circulated through tubing in the floor, to provide heating during the winter months. In the summer, the units produce chilled water, which is circulated through fan coil units to cool and dehumidify his home.

Geo$ense

Geothermal heat pumps offer consumers a heating, cooling and hot water system that is cost-saving, reliable, efficient and environmentally sound.

Physical Data

• 4,500 square feet + 1,100 square foot garage, Built in 1996
  
• Estimated Heating Loss: 147,000 BTUH or 12.25 Ton
  
• Estimated Heating Gain: 81,115 BTUH or 6.76 Ton
  
• Equipment: 2 - GV671 ECONAR Hydronic Units, 2 - Fan Coils for cooling, 7,246 feet of radiant floor tubing throughout home and garage
  
• Typical radiant floor lengths in the house – 300 feet-12 inches on centers
  
• Garage 500 feet-18 inches on centers
  
• Horizontal Slinky Loop
  
• Mechanical Contractor – Hawk Construction, Dubuque, IA
  
• Distributor – Terra-Therm Inc., New Richland, MN
  

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