Well I just want to add on our own experience---efficient or not AA are, you can decide yourself. Our boiler broke down about 2 weeks ago. Made phone call to AA and the engineer came on the following day- -did test and said some part needs change,which would only be delivered 3 days later. FINE. Part arrived and changed, only found out the boiler stopped working one day later. Another phone call followed by another part changed. now it is 2 weeks since the first phone call, we had 3 engineers came out for 7 times and 3 parts have been changed. The boiler is still not working properly and we are waiting for another part to be delivered and changed. On top of all these disturbances, the engineer managed to break the clips which keep the control panel to the mainbody during his first visit and used tape to tape it back on. one day when we got back home after the sixth visit, only found the control panel flipped open with all the parts and electrical wires behind exposed --and the boiler wasn't working.. .rang the AA team to raise our concerns and was only told that it is perfectly safe to have the part taped back on…. 2 weeks, 7 visits, 3 parts changed, we still have the same problem withour boiler. Well not the same as the control panel is broken now… having a 17month baby needs warmth and hot bath every day, it has been 2 very long weeks for us… On the other hand, however, all these visits and parts are free, we were given 2 electrical blowers for free and the AA team we have spoken to was very friendly. I haven’t made up my mind yet whether or not we should make a complaint after all those hustle we went through. At the moment I just wish they can fix our boiler!!!