The day I moved into my flat the boiler developed a series of problems and I had 3 days with no heat or not water this will be day 5 of fixing it.. One remaining issue is that I can’t control the temperature of the heating at all. The wall thermostat doesn’t work and none of the radiators have TVR’s. I have requested these and am waiting for a response but want advice as to how much I can push for these. The heating engineer says they are needed. I am looking at a great increase in bills from my previous property because currently it’s inefficient. Thoughts please?