These systems work on a different principle than an ordinary furnace/air conditioning system and require little maintenance or attention from homeowners. Furnaces create heat by burning a fuel—typically natural gas, propane or fuel oil. With geoexchange systems there’s no need to create heat or for chemical combustion. Instead the earth’s natural heat is collected in winter through a series of pipes—called a loop—installed below the surface of the ground or submersed in a pond or lake. Fluid circulating in the loop carries this heat to the home. An indoor system then uses electrically-driven compressors and heat exchangers in a vapor compression cycle—the same principle employed in a refrigerator—to concentrate the earth’s energy and release it into the home at a higher temperature. In typical systems duct fans distribute the heat to various rooms.
In summer the process is reversed in order to cool the home. Excess heat is drawn from the home, expelled to the loop and absorbed by the earth. GeoExchange systems provide cooling in the same way that a refrigerator keeps its contents cool—by drawing heat from the interior, not by injecting cold air.
GeoExchange systems do the work that ordinarily requires two appliances—a furnace and an air conditioner. They can be located indoors because there’s no need to exchange heat with the outdoor air. They’re quiet, compact and often installed in a basement or attic—some are even small enough to fit on a closet shelf. The equipment is protected from mechanical breakdowns that could result from exposure to harsh weather.
Geoexchange systems don’t have to work as hard—which means they use less energy—because they draw heat from a source whose temperature is moderate. The temperature of the ground or groundwater a few feet beneath the earth’s surface remains relatively constant throughout the year even though the outdoor air temperature may fluctuate greatly with the change of seasons. At a depth of approximately six feet the temperature of soil in most of the world’s regions remains stable between 45ºF and 70ºF.
GeoForce Energy provides professional Vancouver geothermal energy solutions. With years of experience installing both commercial and residential projects, GeoForce is your best choice when you are considering geothermal heating and cooling. GeoForce Energy services Vancouver, West Vancouver, Squamish, Whistler, Richmond, White Rock, Surrey, South Surrey, Langley, Cloverdale, Burnaby, Port Moody, Aldergrove, Abbotsford and Metro Vancouver.