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What is Geothermal?

What is Geothermal?

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Geothermal

Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium instead of the outside air temperature. This allows the system to reach fairly high efficiencies (300% to 600%) on the coldest winter nights, compared to 175% to 250% for air-source heat pumps on cool days.

Although many parts of the country experience seasonal temperature extremes -- from scorching heat in the summer to sub-zero cold in the winter—a few feet below the earth's surface the ground remains at a relatively constant temperature. Depending on latitude, ground temperatures range from 45°F (7°C) to 75°F (21°C). Like a cave, this ground temperature is warmer than the air above it during the winter and cooler than the air in the summer. The GHP takes advantage of this by exchanging heat with the earth through a ground heat exchanger.

As with any heat pump, geothermal and water-source heat pumps are able to heat, cool, and, if so equipped, supply the house with hot water. Some models of geothermal systems are available with two-speed compressors and variable fans for more comfort and energy savings. Relative to air-source heat pumps, they are quieter, last longer, need little maintenance, and do not depend on the temperature of the outside air.

A dual-source heat pump combines an air-source heat pump with a geothermal heat pump. These appliances combine the best of both systems. Dual-source heat pumps have higher efficiency ratings than air-source units, but are not as efficient as geothermal units. The main advantage of dual-source systems is that they cost much less to install than a single geothermal unit, and work almost as well.

Even though the installation price of a geothermal system can be several times that of an air-source system of the same heating and cooling capacity, the additional costs are returned to you in energy savings in 5 to 10 years. System life is estimated at 25 years for the inside components and 50+ years for the ground loop. There are approximately 50,000 geothermal heat pumps installed in the United States each year.


U.S. Department of Energy

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Address:    1351 E Pine St., Suite C Lodi CA 95240
License # 433914 | Phone:  (209) 369-0991
24 Hour Emergency Service Available
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Payment Options
For Furnace in Lodi CA, we accept most major credit cards.
We accept cash for Solar Heating repair service provided in Galt CA.
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Hours of Operation
Monday:   7:00am - 5:00pm
Tuesday:   7:00am - 5:00pm
Wednesday:   7:00am - 5:00pm
Thursday:   7:00am - 5:00pm
Friday:   7:00am - 5:00pm
Saturday:   7:00am - 4:00pm
Sunday:   Closed
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Your Comfort is Our Passion
Contact Information
 
Address:    1351 E Pine St., Suite C • Lodi CA 95240
License # 433914 | Phone:  (209) 369-0991
Hours of Operation
Monday - Friday:   8:00am - 4:30pm
24/7 Emergency Service Available
Connect With Us
For Furnace repair in Lodi CA, like us on Facebook!
For Furnace repair in Stockton CA, visit us on Google!
Leave us a review on Yelp about your Furnace replacement in Stockton CA.
Read what your neighbors say about the Furnace repair or installation we performed near Lodi CA on our Angie's List page.
Payment Options
For Furnace in Lodi CA, we accept most major credit cards.
We accept cash for Solar Heating repair service provided in Galt CA.
We accept check for Heat Pump repair service provided in Stockton CA.
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Home   |   Email Us   |   Schedule Service
Get a Quote   |   Maintenance   |   Guarantees
Employment   |   Reviews   |   Search Site