help, combi boiler, need to drain rads Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[gjc]

Combi boiler sealed system. Need to drain 2 radiators. Can I just turn off rad valves and drain as you would with a conventional system?.

[htg engineer]

yes you can remove the radiators, like you would with any other, the only difference is you may need to top up the boiler pressure. You will definately have to when replacing the radiators.

This will be either a built in combi fill, or a external filling loop, situated on or near the boiler.