How Geothermal Works

With a geothermal heating and cooling system from Buschur’s Refrigeration, Inc., your lawn becomes a permanent power plant for your home. You’ll enjoy the benefits of the most comfortable, reliable, energy and cost efficient heating, cooling, and water heating system available on the market today.

How Does it Work?
The earth absorbs almost 50% of all solar energy and remains a nearly constant temperature of 50°F to 70°F depending on geographic location. Working with an underground loop system, geothermal heating and cooling systems utilize this constant temperature to exchange energy between your home and the earth as needed for heating and cooling.

How Geothermal WorksIn winter, water circulating inside a sealed underground loop system absorbs heat from the earth and carries it to the geothermal heating unit. Here it is compressed to a higher temperature and sent as warm air to your indoor system for circulation throughout your home.


How Geothermal WorksIn the summer, the system reverses and expels heat from your home into the cooler earth via the loop system. This heat exchange process is not only natural, but is a natural and highly efficient way to create a comfortable climate in your home.


Loop Systems
There are several loop configurations available:
1. Vertical Closed Loop: Waterless Advanced Geothermal Heating
2. Vertical Closed Loop – Water Source Geothermal Heating
4. Horizontal Closed Loop – Water Source Geothermal Heating
5. Pond Closed Loop – Water Source Geothermal Heating
6. Open Well Loop – Water Source Geothermal Heating


The best application will depend on the characteristics of your property. Give us a call today and allow our knowledgable sales staff to assist you in deciding which loop design is best suited for your home.


Geothermal Heating Concepts

Energy efficiency
In general, energy efficiency is calculated as the ‘useful work’ or ‘energy delivered’ divided by the amount of energy supplied to do that work. With heat pumps, energy efficiency is measured in two different ways.

Heating efficiency
Heating efficiency is expressed as a Coefficient of Performance (COP). For example, a residential-sized geothermal system might have a COP of 3.5 or higher, meaning for every one unit of energy used to power the system, more than three units are put back into the home as heat. In other words, for every $1 spent, you get $3.50 of heat in return. This compares to efficiencies of 92% for a high-efficiency natural gas furnace. In other words, for every $1 spent, you get 92¢ of heat in return.

Cooling efficiency
Cooling efficiency is measured as an Energy Efficiency Ratio (EER). Keep in mind that both COP and EER are dependent on many factors, and that high-efficiency equipment comes with a higher price tag – but the energy savings can pay back in the difference in just a few years.

Ground temperatures
As you might expect, the earth’s temperature changes in response to weather changes, but there is less change at greater depths. During the winter, a geothermal system absorbs heat from the earth and transfers it into your home. During the summer, the system takes heat from indoors and moves it to the ground.

Air distribution
The air distribution system can make a big difference in both the cost and the efficeincies of geothermal heating and cooling. It also has an important effect on personal comfort and health. The air handling component, or blower, is either a separate cabinet or is part of the cabinet that houses the geothermal heat pump, and includes the blower assembly that forces air through the ductwork. The supply ductwork carries air from the air handler to the rooms. Typically, each room has at least one supply duct and larger rooms may have several. The return ductwork moves air from the room back to the air handler, and should also be located in each room.