Geothermal HVAC Systems Also Provide Hot Water

July 24, 2017 | by Chad Sanborn
Geothermal HVAC Systems Also Provide Hot Water

Not only can geothermal provide energy efficient heating and cooling, it can provide virtually free hot water for at least part of the year.

A geothermal or ground source heat pump can be equipped with a system known as a desuperheater, which is a heat exchanger attachment that allows potable water from the water heater to flow through the geothermal unit.

The desuperheater can transfer heat from the heat pump compressor discharge gas to the water, preheating the water in the hot water tank without the use of fossil fuels. A geothermal water heating system typically includes a tank water heater and possibly a supplemental storage tank as well to store the preheated water.

Because the system is harvesting waste heat, the desuperheater does not affect the heat output of the geothermal heat pump. Also as the system harvests heat only when the compressor is running (when the geothermal heat pump is operating), it doesn't supply 100% of a home's domestic hot water needs. The desuperheater supplements a standard tank or tankless water system.

While desuperheaters operate in both heating and cooling mode, the greatest savings occur in heating mode and the savings while in cooling mode are relatively small. Overall, it results in about 55% savings year around.

If you're considering a geothermal heating and cooling system for your home, ask your building professional about the additional benefits of water heating using the free energy of the earth.

This blog was developed by Bradford White. All posts, sponsored and un-sponsored have been reviewed and approved by the Sustainable Community Media Editorial Team to ensure quality, relevance/usefulness and objectivity.


Topics: Geothermal Heating & Cooling, Heating & Cooling, Water Heaters

Companies: Bradford White Water Heaters



Chad Sanborn
Chad Sanborn is the Product Marketing Manager for Bradford White Water Heaters. He has been in the water heater industry for over 13 years, supporting the growth and development of Bradford White in various capacities. In 2001, Chad began his career in the production areas of Bradford White's Middleville, MI water heaters manufacturing facility. Using his hands-on product experience, Chad transitioned into the engineering department in 2007, where he expanded his knowledge and influence by working with the testing procedures and standards for residential and commercial water heaters. In 2011, Chad was promoted to the Sales and Marketing team, where he currently holds the position of Product Marketing Manager. In his current role, he manages all products for Bradford White Corporation and works collaboratively with the sales and engineering teams to develop Bradford White's short and long-term water heater product development and marketing strategies. Chad holds a bachelor’s of science degree in Business Management from Cornerstone University and is an active participant in many plumbing, engineering and manufacturing trade organizations. www

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