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Thanks everyone for all your help. I appreciate the effort.

Just thinking about this - I have two heated towel rail type radiators, in bathrooms - would that not suffice to solve the problem of the boiler needing to pump its heat somewhere?

ok. I found this, about the boiler - presume this means there is no bypass included

ok. The boiler is a Worcester Bosch - Greenstar CDi Compact. I've just done a search of the online manual and there was no "find" for the word bypass. So maybe it doesn't have one of these? So the issue then is that if I somehow forgot to put a TRV to max when I had the thermostat in the same...

Thanks everyone for comments - I'm beginning to get my head round this. For now my room thermostat is on a stand so I can put it in any room. My understanding is that if the room has a TRV and I turn the TRV up to the max/fully on, it won't "block" the room thermostat. If that's correct, could I...

The old system had a clock that meant I could set the boiler to come off/on at certain times of day. It was only 24hr -not 7 day - that was a defect. But other than that I could simply switch the heating off. As well as controlling all rooms via valves on the radiators when it was on. So I...

I switched because I had very poor hot water flow upstairs. Before taking the plunge I had consulted many, many heating/plumbing engineers and basically this was the recommended fix - there was no room to raise my tank higher in the loft. The only alternative would have been to have some sort of...

So if I place the room stat in the hallway, for example, and set it to about 12 degrees - I wouldn't want it more than that. The radiator there will come on and stay on until it reaches 12 degrees and then turn the boiler off - is that right? Suppose I have another room that I'm actually in and...

So have I made a mistake installing this new system? It feels like I now have to heat my entire house - extension included... I'm used to having heating "off" most of the time.

Thanks! So in a room with a TRV, does it make any difference to how much gas I'm using if I turn the TRV down? My instinct is to turn down radiators in rooms I'm not using, to save gas. But perhaps with this new system I will spend the same on gas whether I heat all these rooms or not? It seems...

I'm quite new to gas heating (grew up off grid) and trying to understand a combi-boiler gas central heating system, just installed to replace a simpler, gravity-fed system. It's been a shock to the system (old stone house and mine) with two radiators already burst due to higher pressure. I'm...

The point is I can't have even half a second of drop in the connection, otherwise it harms the work I do. The result for me would be no more contracts. So I'm not trying to evade their terms, I just want it set up to work with an ethernet cable. And the question then is the route. But I'm...

Thanks for all the helpful comments. It's a contractual condition to have a wired connection - could lose contracts in case of any failure on my part (slightest drop in connection is a problem). Reason for not going through house is simply a difficult route, would involve many corners, getting...

Hi, I'm upgrading to full fibre and unfortunately this means moving where it comes into the house, due to fibre routing limitations. For my work I have to have a hardwired connection, not wifi. The old copper wire goes right over the pitched stone roof to front of house. Openreach advised me to...

No, no problems with hard water. I have been given mixed messages from people visiting as to where I could locate a combi. Current boiler is over stairs, obviously been there for decades, serviced every year no complaints - I also access it to relight if goes out. But now two visitors tell me...

The distance from the bathroom ceiling to bath taps is 150cm. The header tank sits just above ceiling. Water flow rate... hard to measure but I had a stab at this with measuring jug and stopwatch. Hot water flow rate as 3 litres/minute by this measurement, 5.5 litres/minute from downstairs tap...

Yes, my boiler itself is on a level with bathroom, first floor, over staircase. No options to move it from there due to other regulations, need for vent etc. House is officially 3 bed but one is in extension, not in regular use, one is my study. Just one person living here so I don't use loads...

Hi, Sorry I don't have the expertise to answer all these important questions. But the discussion will help me know what to ask a plumber. The loft space is really just the eves under the pitched roof of one room, so not much space there, either to raise header tank or to put cylinder higher than...

There's not masses of space to move cylinder to but I wondered if it could just about fit into the loft. Could there be issues with weight? I wondered if that might have motivated the choice of cellar. Presumably a cylinder full of water is heavy. Is it in fact unusual to have a cylinder in...

I'm not sure I could afford adding insulation as well and would be hesitant to do so given all the controversies. I'm not a DIY person, not physically big/strong enough. Grew up in house without central heating, used to relatively cold temperatures. Just wanting a wall dry enough to paper. But...