remove hydronic plinth heater

26 Jan 2022
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United Kingdom
I am in the process of renovating my kitchen and have come across a slight issue. After removing all the units I have found a hydronic plinth heater plumbed into the central heating system. To remove the heater would it be okay to simply remove the two pipes from the plinth heater unit and join them in a loop? Or Would this be something more complex that requires help from a registered plumber? Any advice would be much appreciated!


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Don't loop them. If its not in use just cap the pipes off. If you loop them hot water will flow straight from the boiler round loop and back to boiler without first loosing it's heat
1. Do not connect them in a loop. You will short circuit your whole heating system.
2. If you want to remove the heater temporarily:
2a. Turn the screwdriver slots in the chrome bits attached to the copper pipes so that both are perpendicular to the valves (the chrome bits).
2b. Lift the heater slightly, enough to get a tray of some sort under the valves.
2c. Unscrew the two chrome nuts right next to the copper pipes. Water will drain from the heater as they are loosened.
2d. If the heater is only going to be off for a short time, do nothing more.
2e. If the heater is going to be off for several weeks or more, it would be prudent to get two short lengths of copper pipe, two stop ends (1 off Screwfix 65021) and a 15 mm compression connector (Screwfix 95828 although you only need 1). Use the two nuts and olives from the coupler to join the pipe stubs to the chrome valves, and screw the stop ends onto the other end of the copper.
3. If you want to remove the heater permanently:
3a. As 2a through 2b.
3b. Trace the flexi hoses back to where they joint the system.
3c. Drain the central heating system, and remove the flexis, replacing with stop ends.
3d. If there is any element of copper (or plastic piping) at the non-heater end of the flexis, this should be removed back to the point where it joins the system. This is to remove any "dead legs" in the system.

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