Geothermal Technology

Some firms are afraid to embrace new technology. Not Global LLC. Technological advancements often lead to cost savings for our clients.

A perfect example is geothermal technology.

Geothermal heat pump systems utilize the heating and cooling properties of the earth, reducing energy costs up to one-half and maintenance costs by one-third over the life of a facility. Moreover, geothermal systems require far less equipment, minimize the use of fossil fuel, and offer tremendous rebates.

  • Lowest Life Cycle Cost
  • Lowest Energy/Operating Cost
  • Lowest Maintenance Cost ($0.08/SF vs. $0.30/SF per year for traditional HVAC systems)
  • Eliminates:
  • Boilers
  • Chillers
  • Cooling Towers
  • Water Treatment
  • Condenser Pumps
  • Related Controls
  • Reduces Size of Equipment Room
  • Eliminates Outdoor Equipment
  • Provides Heating and Cooling All Year with Automatic Change Over
  • Each Room Zoned Separately
  • Environmental Benefit: Reduces Refrigerant 40 - 50%

The earth is a giant energy collector that absorbs and stores heat from the sun. At depths greater than 20 feet, the ground temperature remains within five degrees Fahrenheit of the average annual air temperature. This ground temperature is stable throughout the year, so in most climates, the ground temperature is warmer than the air in the winter and cooler than the air in the summer.

Geothermal/Ground Source Heat Pump Systems don't actually create heat. Instead, they move heat that already exists. For example, a water and antifreeze solution is circulated through a closed Ground Loop system consisting of over ten miles of plastic pipes buried beneath the ground. These one-inch diameter pipes are buried in 100 vertical bore holes, 275 feet deep. During winter, the system extracts heat from the ground and moves it into the building. During summer, the system extracts heat from the school and moves it into the ground.

Benefits of a Geothermal/Ground Source Heat Pump System

Environmental - For each hour of operation, each water-to-air heat pump produces one pound less CO2 than a fossil-fueled heating system, including emissions from fuels used by the power company to generate electricity for each pump.

Conservation - No fossil fuels are burned to create heat. Heat from the earth's moderate ground temperature is used to regulate temperature in the building. Using this stored heat from the sun provides the building with a limitless, renewable, and free source of energy.

Low Maintenance - The Ground Loop has an expected maintenance free life of over 50 years. Most heat pump units are located indoors, protected from weather exposure. Also, there is substantial maintenance cost savings since no boiler or chiller equipment is required.

Efficiency - On average, three to four times more heat energy is produced than is consumed in electric kilowatt-hours. An added benefit is that domestic hot water is also heated through the system.

Space - Geothermal/Ground Source Heat Pump Systems require very little floor space indoors and are almost always smaller than fossil-fueled furnace or boiler systems. Construction savings are possible as the size of the mechanical space and the area needed for duct work are less than the space requirements of conventional systems.

Flexibility - Geothermal/Ground Source Heat Pump Systems can be adapted to residential and commercial use across the country in either new buildings or as retrofits in existing buildings.

Low Noise - Most heat pump units are housed entirely within the building and have no exposed noisy outside condenser units. The noise from the water-to-air heat pump units mounted above classroom ceilings is much less than that from a conventional unit ventilator or rooftop system.