Draining your Hot Water System

So, you want to change some hot water taps, or maybe even attempt to change a tap washer? Draining your hot water circuit is very easy.

Keep it Simple


This is for all boiler and system types;

  • Turn off your boiler
  • Turn off your mains water stop cock
  • Open your all your hot water taps in the house until the water stops coming out

There are several valves you can turn in cupboards and lofts to isolate separate hot water cicuits, however, due to the formation of limescale when water heats up, the chances of the valves either not closing off, or not opening up again, are too great. It's easier and safer just to turn off the mains stop cock, and drain the hot water circuit completely!

To reinstate, just do the opposite!