Hi I have economy 7 heating in the attic theres a cold water tank on the first floor is the bathroom and hot water tank downstairs is the kitchen.The hot water pressure is almost non existent .About a year ago I got a shower fitted in the bathroom and I think it has gradually lost pressure since then.I seen on a website that if you attached a hose to the hot and cold water pipe and opened up the valves it would blow out the airlock does this work if so how long do you leave the vales opened for.
Thanks
Thanks