Why choose geothermal HVAC?
- Federal and local incentives upto 60% making initial investment competitive with conventional HVAC.
- Coefficient of Performance 3 – 5 : Every one unit of electricity that powers the system yields 3 to 5 units of heat energy.
- Earth loops durable for upto 30 years
- No Fossil fuel: that means no pollution
Types of Geothermal Loops
- Open Loop: When an aquifer is available. A well is drilled into the underground water. The water exchanges temperature in heat exchanger and returned to the aquifer through “reinjection”.
- Closed Loop: Water with anti-freezing solution is circulated in a closed loop that comes out of and goes into the building.
- Horizontal loop: Requires a little excavation to lay the horizontal ground loops as a closed geothermal system.
- Vertical loop: A series of pipes are bored down into the ground providing 45 to 75 degree ground temperature to the building.
What goes into installing Geothermal HVAC?
- Soil thermal conductivity
- Aquifer depth and availability
- Checking groundwater quality
- Exchanger type and quality
- Piping/Duct work
- Valves and controls
Geothermal for all seasons
- In Winter A geothermal heat pump collects the Earth’s natural heat through a series of pipes called a loop which are installed below the surface of the ground or submersed in a pond or lake. Fluid circulating through the loop and carries the heat to an electrically driven compressor and a heat exchanger where the heat is compressed and released inside the home at a higher temperature. Ductwork distributes the heat to different rooms.
- In Summer The underground loop draws excess heat from the house and allows it to be absorbed by the Earth. The system cools your home by drawing heat from the interior and not by blowing in cold air.
How it works Ground Source Heat pumps
- Elimination of outdoor equipment
- Superior comfort in heating and cooling modes
- Elimination of fossil fuel consumption (on-site)
- Enabling thermal load sharing (Pool/water heating)
- Longevity of system
- Elimination of fresh water consumption (usually from cooling towers)