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CRD Certified Residential Geothermal Designer VIP Exam
CRD — The CRD (Certified Residential Geothermal Designer) credential is issued by the International Ground Source Heat Pump Association (IGSHPA); the written exam covers residential ground source heat pump system design across site assessment, thermal load analysis, loop field design, equipment selection, and system integration.
29
Questions
180m
Time Limit
70.00%
To Pass
Question 1 of 29👑 VIP
A designer is evaluating a site in central Oklahoma for a vertical closed-loop ground source heat pump (GSHP) system. The site geology report indicates a mix of sandstone and shale with an average dry thermal conductivity of 1.4 W/m·K and a volumetric heat capacity of 2.1 MJ/m³·K. The home has a design heating load of 36,000 BTU/h and a design cooling load of 42,000 BTU/h. Before running a detailed bore field sizing calculation, the designer needs to estimate the undisturbed ground temperature (UGT). Which of the following sources provides the most reliable starting point for the UGT at this location?
Questions 2–29 and full explanations are VIP-exclusive.