Hot Water Problems in general

 
Hot Water Problems in general

The following is a guide only. Always consult qualified personnel as to the validity and course of actions suggested

Weak shower flow

There are 3 potential issues here;
  1. A low pressure hot water cylinder: Consider changing to mains pressure
  2. Pipes are too small: This is critical to water flow and a common problem
  3. Shower head is restrictive: Although efficient the shower head might be the reason for low water flow
Solutions;
  • Upgrade to a mains pressure cylinder
  • Modify plumbing to larger pipes
  • Change shower head to higher flow model (or at least standard flow)
  • Install a pressure sensing pump for the showers only


My shower runs hot/cold when another water tap is turned on

There are 2 potential issues here.
  1. A low pressure hot water cylinder: Consider changing to mains pressure
  2. Poor plumbing practice and the pipes are too small: Most houses where this occurs have showers plumbed at the end of hot water pipe runs and often only 15mm pipes are used. It is important to feed the showers direct via 20mm piping and other services with 15mm AFTER the showers
Solutions;
  • Upgrade to a mains pressure cylinder
  • Modify plumbing to larger pipes direct to the showers (typ 20mm), other services teeing off with smaller pipes downstream (typ 15mm). Separate shower pipes back to cylinder is best
  • Fit a pressure balancing shower mixer valve at the shower

Hot Water Problems in general

Plumbing makes banging noise when a tap is turned off

Known as Water Hammer or hydraulic shock.
Solutions;
  • Secure pipes so they cannot move
  • Install an a Water Hammer Arrestor device
  • Run larger diameter pipes (if all else fails)


My hot water is a milky colour

If the water becomes clear after a number of minutes then this is usually tiny air bubbles. This is harmless but aesthetically displeasing.
Solutions;
  • Wait until problem disappears, often occurs after new cylinder installed or water company work outside. Maybe a few days to a few weeks
  • Check if incoming water pressure is too high or pressure limiting valve is faulty. Consider reducing incoming pressure a modest amount
  • Fit aerators to your taps

 
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