Can you branch into existing radiator pipes to add an extra radiator it is 8 mm pipe the existing radiator is on the first floor the new one will be on the ground floor directly below .it is a gas back boiler,thanks for any help Les

Hi Les

If this is a forced water boiler then yes, you can connect into pipes, but with the pipe being so small (8mm) it will take a lot longer for the old radiator (as well as taking long time for the new radiator) to heat up... ;)

More questions? Let me know, OK?

Mark