A GeoExchange installation requires the skill and experience of a certified contractor. You can find a CGC (Canadian GeoExchange Coalition) accredited professional by going to: http://www.geo-exchange.ca/en. When looking for a contractor, ask for references and photos of their previously installed systems. Previous clients will be the best indicator of the quality of work and integrity of the company. Ask the contractor about current projects, similar projects to yours, and the length of time that they have been installing GeoExchange systems. Confirm that your contractor has a generous portfolio of completed and working jobs to show you.

When hiring a contractor, get two to four estimates/quotes to compare. Each estimate should include:

• Cost of labour, equipment and materials (Including makes, models, sizes, etc.)
• Expected payment schedule
• Estimated work start and completion dates
• Warranties or guarantees
• Homeowner (General Contractor) vs. Mechanical Contractor responsibilities
• A statement that the Mechanical Contractor will instruct the homeowner on the operation and maintenance of any equipment and supply an operation manual
• Confirmation that the contractor will work with an engineer regarding letters of assurance and inspections if the municipality requires it
• Confirmation that the contractor will hire the drilling company and an estimate of the drilling costs

When you hire a contractor ask for a written contract. Before you sign:

• Read carefully to make sure all details in the estimate have been included
• Review all terms and conditions and the fine print

Do not sign an incomplete contract and do not make a verbal agreement. A contract will help resolve any disputes if the work is unsatisfactory. Most contractors will require a signed contract and a small deposit before work can begin on the home.

Can I Install a GeoExchange System Myself?

Although based on a very simple theory, GeoExchange systems require diverse skill sets for a proper installation. Refrigeration technicians, plumbers, electricians, control technicians, drillers, and CGC certified installers all work together with the GeoExchange designer to install and commission the system.

The design of the system is by and large the foundation for an efficient and cost effective system. A few of the considerations and calculations made by the designer are:

• Heat loss/cooling load calculation of the building in question
• Thermal conductivity of the ground estimated or tested
• Heat pump and ground loop sized along with any auxiliary heat required
• Flow rates and heat loss through the source-side and distribution piping for pump selection
• Calculation of antifreeze required
• Control system selection and integration
• Some municipalities require B1/B2 and Schedule C documents from a professional engineer

Qualified installation technicians and designers will consider the homeowners comfort needs and budget so that they receive the system they desire.