two radiators down stairs are cold up stairs are fine, pressure is only 0.8 should be around 1.5 to 2.0 how do i increase pressure,

allen, November 2010

0-8 is still ok it is more likely the rads are airlocked turn off rads that are working this should do the trick some boilers have a built in refill otherwise look under the boiler for a flexible silver pipe at one or both ends there will be a tap with either a small black handle or a slot for a screwdriver do not turn anything with a blue red or yellow handle these are the boiler isolation valves

brian, November 2010