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Hello, can anyone help? Our old house is now rented out and the PTT2 Themostat, which has always chattered a bit if it is in limbo between below and reached, has become very noisy, the chattering is now more shouting and it is causing the tenant some concern. If I still lived there I'd probably...

Hi, I am about to get an unvented sytem installed in a new house. I currently have a (much loved) vented system with an external cylinder thermostat. I can use it to see if there is enough hot water for a shower for example, without having to put the heating on. My installer says that the...

Hello, can anyone help me. We have a potterton prima 50e which was installed about 20yrs ago. After some overheat thermostat cutting out problems last year we replaced the 2 port CH valve, so when the same thing started to happen again this year we replaced the (original) HW valve (as a...