| Contractor** |
Is properly registered by the State of Wisconsin and is actively engaged in designing, installing or servicing geothermal systems. |
| Loop Contractor** | Is properly registered by the State of Wisconsin and is actively engaged in designing, installing or servicing vertical or horizontal heat exchangers. |
| Designer** | Is a Mechanical Engineer (P.E.) or is a HVAC system designer that designs and/or specifies geothermal systems. |
| Distributor | Is an independent wholesaler of ARI certified geothermal systems. |
| Manufacturer | Is any manufacturer of ARI certified geothermal equipment. |
| Utility | Is any electric utility serving Wisconsin customers. |
| Associate | Is any company or individual not included in the other categories whose business has a direct relationship to the geothermal industry. |
| Honorary | Is a member whom the Association wants to recognize for outstanding service to the geothermal industry. Such members do not have voting privileges. |