Associates
- Aecon Geoexchange Solutions
- Diverso Energy
- Evolved Thermal Energy Inc.
- Gorski Plener & Associates Inc.
- OEC
- Rathco Engineering
- Synergy HVAC Design Inc.
Contractors
- 719329 Ontario Limited o/a Laskey's Service Ron Smith Well Drilling & Ontario Ge
- Abram Refrigeration & Systems
- Aecon GeoExchange Solutions Inc.
- Air Rock Drilling Company Ltd.
- ATEL Air Heating & Air Conditioning
- Bostech Mechanical Ltd.
- Bryan's Fuel
- Buchanan & Hall
- Cook's Plumbing & Heating
- Denoco Energy Systems Ltd.
- Earth4u
- GeoEnergy Systems Inc.
- Geo - Teck Heating & Cooling Limited
- Geo Source Energy Inc.
- Geo-Thermal Furnaces Ltd
- Groundheat Solar Wind Corp.
- JAC Mechanical
- Konkle Plumbing & Heating Inc.
- Koolen Electric
- M.A.R.C.H. ClimateCare
- MAK Mechanical Ltd.
- McCrea's ClimateCare
- Mirabelli HVAC Inc.
- Nottawasaga Mechanical
- Quest Geothermal
- R.B. Heating ClimateCare
- Reliance Home Comfort - Toronto Head Office
- Rick Menard Heating & Cooling Ltd.
- STS Renewables
- The Green Method Inc
- The Hayter Group (Alvinston)
- Waterloo Energy Products
