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Which type of geothermal heat pump system is more energy efficient? (assuming typical conditions)

Closed loop system
43%
Open loop system
18%
There is no significant difference.
31%
Not sure
6%
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Question: Which type of geothermal heat pump system is more energy efficient? (assuming typical conditions)
Top Answer (43% of 16 votes): Closed loop system.

Answer: There is no significant difference.
Explanation: The open loop is a fraction more in efficiency vs a closed loop. This is because the ground water used stays the same temperature year round. A closed loop extracts heat from the ground, but recoups relatively quick.
Geothermal Sales & Service, Inc.
Answer: Closed loop system
Explanation: A closed loop system in my opinion is more energy effecient.
Dr Heat & Cool Comfort Experts
Answer: There is no significant difference.
Explanation: If all is the same a closed loop with glycol may be slightly better.
Kohler Heating and Air Conditioning
ProMatcher
Answer: Open loop system
Explanation: more stable temps
Climate Creations LLC
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