Geothermal power - How it works

Geothermal Heating and Cooling

One of the most promising solutions to high energy costs is buried deep under your lawn. Super efficient geothermal pumps provide clean, quiet geothermal heating and cooling while cutting utility bills by up to 70%. The earth’s temperature stays at a constant 50 degrees or so, no matter how hot or cold it gets outside. So while a conventional “air-source” heat pump battles to scavenge heat from the freezing winter air or to dump it into the sweltering summer, the ground below has a comparatively easy job of extracting and disbursing heat through the 50 degree liquid circulating in ground loops. It takes only one kilowatt/hour of electricity for a geothermal heat pump to produce nearly 12,000 BTU of cooling or heating which is twice as efficient as the top-rated air conditioners.

More in depth

Almost everywhere, the upper 10 feet (3.0 m) of Earth’s surface maintains a nearly constant temperature between 50 and 60°F (10 and 16°C), depending on latitude. An NP Environmental designed geothermal system is used to circulate a carrier fluid (usually a water/antifreeze mix) through pipes/tubing buried in the ground. As the fluid circulates underground it absorbs heat from the ground and, on its return, the now warmer fluid passes through the heat pump which uses electricity to extract the heat from the fluid. The re-chilled fluid is sent back through the ground thus continuing the cycle. The heat extracted by the heat pump is used to heat the house creating clean and comfortable geothermal heat. For geothermal cooling just switching the direction of heat flow, the system circulates the cooled water through the house for cooling in the summer months. Please note in order to cool your home duct work or air handlers must be installed. The heat is exhausted back to the constant ground temperature rather than being delivered to the hot outside air as a typical air conditioner does. Moreover, a NP Environmental system makes geothermal heating and cooling economically viable in any geographical location. Get your custom geothermal heating and cooling quote today by clicking the “get a quote” button on the home page.