Solar water heating – water not hot enough/inadequate supply

Causes

Collector panels not large enough to meet hot water demand

Collector panels not orientated to maximize solar gain

Collector panels are being shaded

Collector panels are dirty

Booster heating is not working correctly

Water is not circulating through the system properly 

Storage cylinder is too small for demand

Pipe lengths too long and/or inadequately lagged (insulated)

Common

Listed under: water heating, solar water heating, Services

Cause

Collector panels not large enough to meet hot water demand

Repair

  • install more collector panels

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Cause

Collector panels not orientated to maximize solar gain

Repair

  • re-orientate collector panels

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Cause

Collector panels are being shaded

Repair

  • cut back overhanging planting that is shading collector panels

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Cause

Collector panels are dirty

Repair

  • wash collector panels

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Cause

Booster heating is not working correctly

Repair

  • adjust booster heating system

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Cause

Water is not circulating through the system properly 

Repair

  • call a specialist service/repair person

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Cause

Storage cylinder is too small for demand

Repair

  • install larger storage cylinder or reduce hot water usage

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Cause

Pipe lengths too long and/or inadequately lagged (insulated)

Repair

  • insulate pipes
  • call a specialist service/repair person

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