Do radiator radiators need thermostatic valves?

However, while TRVs can, technically, be installed on all radiators, it’s usually a good idea to leave one radiator without a TRV and permanently switched on. Ideally, this should either be a bathroom, which would usually benefit from permanent heat, or the room with the thermostat in it.

Will thermostatic radiator valves fit all radiators?

It’s always a good idea to fit some! We recommend you fit a thermostatic valve on every radiator. But there’s no need to fit one in a room with a fixed room thermostat.

Are radiator thermostat valves universal?

The connection between your valve and the radiator is standard across all moderns radiators and valves. The size differences listed above refers to the width of your pipes that the valves will slot onto. Most of the time it’s 15mm, but measuring your pipes will confirm.

Can you adjust thermostatic radiator valve?

Make sure everything is tight and remove the top plastic cap of the valve. You can test if it springs up and down the right way. Put the TRV head unit on the top and adjust it. You should now have a working TRV.

Do thermostatic radiator valves go on flow or return?

Most modern thermostatic radiator valves are bi-directional – so can be fitted on either the flow or return pipe of your radiator. However, it’s always best practice to fit the TRV on the flow pipe that enters your radiator.

What number should radiator valve be on?

Radiator valves have numbers or symbols to represent how much heat the radiator is putting out. Normally, these numbers range from 1 – 6. Turning the valve to 3 should give you a room temperature around 20°C.

What size are old radiator valves?

15mm valves are the only size you’re likely to encounter, since 15mm copper pipes are the most common. There are also other sizes, from 8mm to 28mm, and there are accompanying adapters.

Do all radiator valves fit all radiators?

In fact, some radiator valves just won’t be compatible at all and others can’t be used with certain radiators because of size, shape and design.

How do you change a thermostatic radiator valve without draining the system?

Follow the steps below to learn how to change your radiator valves.

  1. Turn the heating and water off.
  2. Protect the floor.
  3. Prepare the radiator valves.
  4. Release the stored pressure.
  5. Open the old valve on the flow pipe.
  6. Release the pressure & drain the radiator.
  7. Remove the old thermostatic valve.

What happens if you get flow and return the wrong way round?

If the pipes are reversed, the sensor will record the lower temperature and could compensate to make up the difference. This can result in unwanted noise, or overheating and inefficiency.

How do you know which is flow and return on a radiator?

As a rule of thumb most thermostatic valves work on the return of the system. Check the valve itself and there should be a little arrow near the outlet. If the arrow points away from the valve it needs to go on the return side of the radiator, if it points into the valve it should be on the flow side.