cold radiator All aspects of plumbing questions and answers, help, tips and information

[hides1968]

i replaced a insulation valve on my heating pipe .because the screw was leaking .but the last radiator will not get hot .all the rest are fine.bled the rad but it is full

[lofc]

Heating system probably needs to be balanced. Try turning down all the return valves, one at a time, till last rad gets hot. Only turn the valves slightly. If your`e not sure which are the returns make sure heating is on and feel both pipes going to the rad and the hottest one will be the flow. Hope this helps.

[htg engineer]

Pressurised system ?

Probably airlocked, make sure both valves to this radiator are open - turn off all other radiators - it will push through.


htg