Is it difficult to add another radiator to my combi system? I want to put another rad on the landing as it gets quite cold at night. The pipework seems to run from the bathroom to the small bedroom, which are directly opposite each other. The floor gets warm when the heating is on so i guess the pipework must run across the landing.The boiler already has an external red pressure vessel attached to it, i was told this was so other rads could be fitted. I would be looking at having a 5ft x 2ft single rad installed on the stairs wall as thats the largest that will fit. The combi is a Sime Friendly if it makes any difference.
