Geothermal Is A Green Home Energy Option

If you are interested in pursuing different options to make your home more eco-friendly. Also, you may be interested in improving the energy used while you maintain an amazing interior comfort conditions. Either way, your greenest option for comfort at home is a geothermal heat pump. Knowing how geothermal systems function and the advantages of installing them may motivate you to go green as you fully consider changing your current equipment.

What Is a Geothermal System?

Geothermal technology is attributed to the earth’s internal heat, and a geothermal system uses the more constant earth conditions to offer better energy efficiency in home comfort control. While an air source heat pump uses the surrounding air as the heat is absorbed from or released into one’s environment, a ground or water source heat pump makes use of soil or water to facilitate the energy exchange. Because temperatures are more stable underground or in deep water, the geothermal system will operate with less energy consumption.

Geothermal Systems

Geothermal heat pumps rely on a loop field for absorption and release of external heat. In an air source heat pump, a refrigerant loop is smaller with the outside coils in a condenser unit. A geothermal heat exchanger’s footprints are extensive. These coils are constructed with tubes that are usually plastic, and an antifreeze solution flows through the coils to exchange heat with the refrigerant housed in the heat pump. The way  the coils are positioned in an environment with more stable temperature shows that the transfer of energy between refrigerant and antifreeze maintains consistency even in severe weather conditions.

Geothermal System Design

Various important elements are available in a contractor’s design of a geothermal system for most homes. The heating loads must be known to determine the required sizing for the heat pump. Generally, HVAC contractors will size the geothermal system to accommodate between 95 and 98 percent of the heating load in northern locations.

Another key component of the system design is the loop field. The four main options are – vertical loops, horizontal loops, open loops, and lake/pond loops. Choice of loop depends based on the property and landscape where the loops will be placed. Geothermal Energy Benefits

Being able to use less amount of energy is a major advantage of this type of heating system, but for those who are primarily interested in cutting down utility bills have to understand that geothermal projects are not so cheap. According to Energy.gov, the extra costs of a geothermal system can be regained in between 5 and 10 years through a better efficient system operation. In addition, the life span of a geothermal system is approximately 25 years, which exceeds the life span of an air source heat pump by over a decade. Based on estimates, these loops can last for 50 years or even more.

 

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