A Geo exchange system can cut energy costs by 60% or more compared to conventional systems. It can produce and reject 3-4 times more energy than it consumes. They also have the lowest lifecycle cost of any type of mechanical system. Plus, they are better for the environment because there is no consumption of fossil fuels, if the electricity required is renewably generated.

The life expectancy of a geothermal unit is 30 years, and the High Density Polyethylene piping, which has a high resistance to chemicals found in the soil, has a lifespan of 75-100 years. Like any other heating or cooling system, good maintenance is a key part of getting the most value for your energy dollar. Checking the system periodically and having it professionally inspected regularly will help ensure that it stays in peak operating condition. A geothermal unit can generally pay itself off within 8-10 years. It can work as a retrofit, with the exception of high temperature baseboard. Cost is determined by coming up with a projected overview of the entire project. The site must be evaluated, as well as the mechanical room if the project is a retrofit. A floor plan should be reviewed for a heat loss calculation. This will determine the requirements for the system.

Jo Anne Peña has nine years of experience in construction project management and extensive training in geothermal installation. Contact: joanne.pena@dahlplumbing.com.