the heating i have changed from gb to qualpex the problem i have is the rads upstairs heat fine but the rads downstairs dont heat at all i put in new pipe works 3/4 then reduce to 1/2 inch i took of a rad in the downstairs toilet to see if i had an air lock but it is fine can u help me with this problem thanks

john, February 2009

system may require balancing

john, March 2009

sounds like the downstairs heating circuit is piped wrong

mike, February 2009