Rooter
Money List Winner
Yes we have a pump near the boiler (it isn't a combi as we have a hot water tank in the loft) and no cold water tank that I've seen. Is that a pumped system then?
I may be being too obvious, but surely if you have a pump, its a pumped system?! Stu C is your man! Only confusion for me (not a plumber!!!) is your HW tank is in the loft, which would suggest gravity.. Is the pump pumping to the HW tank, and then thats gravity feeding the CH?!
Sorry, I have probably made it worse for you! A little knowledge is a dangerous thing!!