OPEN LOOP SYSTEM
If an abundant supply of quality well water is available, an open loop system can be installed. A proper discharge site, such as a ditch, field tile, stream, or pond, must also be available. Be sure to check all local codes before selecting a discharge method. This installation usually costs less to install and delivers the same high efficiency. Care should be taken when considering using an open loop system. Depending on water quality, periodic cleaning of the heat exchanger inside the unit may be necessary. Well water containig too many contaminants may not be suitable for use with a geothermal system as it may cause the unit's performance to degrade over time. Poper testing of the water prior to installation is required.