4 step guide to designing geothermal systems the first part to understanding any aspect of the geothermal industry whether it be marketing sales design or installation is to understand how the technology works and it is designed by understanding the design process even if you are never going to do design yourself you will better understand how the technology is sold will be confident . Even though the installation price of a geothermal system can be several times that of an air source system of the same heating and cooling capacity the additional costs are returned to you in energy savings in 5 to 10 years system life is estimated at up to 24 years for the inside components and 50 years for the ground loop there are approximately 50000 geothermal heat pumps installed in . Resource assessments for geothermal heat pump systems depend on the size of the project for small closed loop projects such as individual homes or businesses where the size of the installation is approximately less than 6 tons 21 kw little advanced investigations are normally undertaken usually only the local experience of designers and . Homeadvisors geothermal system cost guide lists prices associated with installing geothermal heating or cooling including labor and materials average costs of ground source heat pumps and closed loop hvac systems for residential homes. Ask for references from owners of systems that are several years old and check them the ground heat exchanger in a ghp system is made up of a closed or open loop pipe system most common is the closed loop in which high density polyethylene pipe is buried horizontally at 4 to 6 feet deep or vertically at 100 to 400 feet deep these pipes are
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