this is my second review of my new boiler as in my first review I said the hot water wasn't working properly in my bathroom but heatable contacted me straight away and explained to me I was doing it wrong the fitter explained to me the taps have to be on full for it to work correctly and I did this and it works brilliantly thank you heatable for your super fast reply I would also like to thank the fitter for his help with unexpected hitches my old system was gravity fed an I was being upgraded to a pressurized system so when the new system was turned on my taps in my bathroom sink wouldn't turn of so he told what I needed so I went to my local plumber merchants and got the parts and he fitted them for me 10/10 heatable.