Hot Water Solar Repair, Humboldt County

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Hot Water Solar Repair
Description An open looped, solar hot water system was repaired in Humboldt County. Both of the dribble valves were replaced for this repair.
Keywords Solar hot water heater, renewable energy systems, open looped system, dribble valves, repair, efficiency, heat exchanger, storage tank
Made? Yes
Published 2009/12/18
Countries of design United States
Documentation data
Language English
Manifest data
Language English
Updated 2020-07-12
Author Megan Moore
Author affiliation Appropedia
Author email

Hot Water Solar Repair Supervisor: Ben Scurfield

This solar hot water system was one of the first in Humboldt County. This system is over 30 years old and part of Arcata’s pilot program for renewable energy systems. It had a slow leak from both of the dribble valves which are necessary for an open looped system. The advantage of and open looped system is added efficiency from not having a heat exchanger. The old valves were replaced after draining the collectors into a bucket from the drain outlet shown in the next picture. After being drained we replaced the dribble valves with minimum leakage and the problem was resolved.

System overview:

  • 80 gallon storage tank
  • 50 gallon gas back up
  • Open loop system

Energy produced:

  • 50,000 BTUs per day


  • Undetermined


  • 85%