What is a closed loop system?
A closed loop system uses a
continuous loop of buried polyethylene pipe. The pipe is connected to the
indoor heat pump to form a sealed underground loop through which an
environmentally friendly antifreeze-and-water solution is circulated. A closed
loop system constantly recirculates its heat-transferring solution in
pressurized pipe, unlike an open loop system that consumes water from a well.
Most closed loops are trenched horizontally in areas adjacent to the building.
However, where adequate land is not available, loops are vertically bored. Any
area near a home or business with appropriate soil conditions and adequate
square footage will work.
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