IGS installation at the Semmler residence.
Used for Solar DHW, pool heating and space heating.
6 ThermoPower evacuated tube collectors.
Collector array surface area: 211 square ft.
Collector array solar production: 29 mmbtus.
DHW solar fraction: minimum of 75%.
Swimming Pool solar fraction: 85% (indoor pool) He keeps at 83 degrees.
Space heating: minimum 25% solar fraction.
Total solar fraction of 52%.