Heat of Extraction/Rejection

Geothermal University explains Heat of Extraction/Heat of Rejection. Be sure to download the exercise / training form.  Learn more at www.geothermaluniversity.com

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Measuring Subcooling and Superheat on Geothermal Unit

Measuring subcooling and superheat is a critical diagnostic testing procedure when a unit is not performing adequately. This video explains how to measure subcooling and superheat. Always compare your results to the manufacturer's specifications.

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Temporary Heating / Cooling While Waiting for an ECM Replacement

Very few service companies stock ECM motors and Modules.  When one fails, the customer is without heat or cooling.  Here's an outline of a way to provide temporary heat or cool while waiting for a replacement motor.  

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Testing for Scaling

Poor water quality on an open loop system will quickly decrease heat transfer.  Here is a recommended method for testing and cleaning a scaled coax.  

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Water Quality is Critical to A Good Installation

The quality of the water used in geothermal systems is very important. In closed loop systems the dilution water (water mixed with antifreeze) must be of high quality to ensure adequate corrosion protection.

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