Edders

This doesn't bode well for my building project. https://www.bbc.co.uk/news/business-57247757 That probably explains the reluctance for builders to quote at the moment - I've approached 10, 6 turned up to view site, 2 quotes so far. This is in the space of 5 weeks. The rest have gone quiet.

Not one I've come across, I'll check it out. Thanks.

Right I've answered my own question. Drayton Wiser and Tado offer an API so that external programs can interact with it. From what I've read Tado allows your program of choice to communicate with it, whereas the Drayton Wise (or Schneider Electric) allows your program to communication with the hub itself. Very useful if the provider pulls the plug on the serve. Looks like I'm going Wiser ... Relevant resources for those that want to pursue this as well HomeAssistant https://community.home-assistant.io/t/drayton-wiser-home-assistant-integration/80965 asantaga/wiserHomeAssistantPlatform DrJohnT/HomeAssistantPublicConfig OpenHab https://community.openhab.org/t/drayton-wiser-thermostat-binding/35640/405

Yes - Its on a timer. I can override it. I'd like to be able to control it from Home Assistant (or OpenHab) I've already setup Home Assistant (https://www.home-assistant.io) on my own hardware.

There's 300mm of loft insulation directly above the bathrooms. It's the lack of ventilation and the love of long, hot showers. As a minimum it needs an extractor. If a MVHR brings additional benefits, then I'll get one of those fitted with ducting going to the 2 bathrooms. If it's marginal, then it'll be 2 x standard in-line extractors venting via the soffits.

SteamyTea, got any good examples you can refer me to? Everyone has their own opinions etc

I can't disagree with that. Well I suppose I better crack on with it. Luckily there seems to be quite a pool of knowledge here.

Yes - just for the 1st floor bathrooms. Loft is directly above. No more holes than 2 x single-room units, but more ducting. Is it a good idea to mix different humidity intakes? i.e 2 bathrooms and a landing?

hahah - that's more or less what I have at the moment !

Yes, it'll be just for the 1st floor bathrooms, they're about 8m apart, all accessible via the loft. I've got plastic soffits etc.

I'm updating my heating system. Likely to replace it with a condensing gas boiler. Don't have any thermostatic valves. Any suggestions for a system that I can control each room rad stat? and HW. The proviso is that it doesn't rely on XXYY company keeping their servers on for you or that allow open source , documented control protocols that can be controlled by an open source or self-hosted control system?

I have read some of the other threads, but they seem quite complex. The house I have a 1970s detached house, 5 beds. 300mm insulated loft, main house walls are cavity insulated. Older PVC double glazed, they don't have trickle vents. I'm on gas mains, have a 5.5KW PV array that is on 14.5p/KW FiT. The boiler is an Ideal Classic, 24KW located in a kitchen cabinet Small VC, expansion tank in the loft for the rads. About 15 rads, 1900ft2 ish 2 bathrooms (soon to be a third) all with showers Stuart Turner 2.5bar shower pump Incoming water mains is via 15mm copper pipe, get about 12l per minute Problems with the boiler The boiler keeps cycling, on for 30s, then off for 15s then on again, ad-infinitum. I have flushed the system several times, used the Sentinel X400 (or something like that) ran it hot for a few days and flushed it etc. Also changed the CH pump. Seemed to make it a little better. Turning the rad temp down helped more. The 2 port diverter valves keeping burning out the actuators, I later found that the valve is quite hard to turn with pliers and ended up leaving it open. Problems with the hot water I've got a teenage daughter, she spends forever in the bathroom washing her hair etc. My poor VC can't cope. Pressure starts of great for the first 5 minutes, then trickles out. What I'd like More hot water at pressure A boiler that works properly and be more efficient A hot water cylinder that has an immersion element, preferably 2 to be heated by the excess power from the PV array Like to relocate the boiler away from the kitchen. I do have an under stairs cupboard that may work, it's on the other side of the wall of where the current boiler is. Now I've considered ASHP, though I'm not keen on the size of the unit and the noise they make. Plus I don't think it'll work too well with my current rads. Also read that it's costing people a lot more to run. But feel free to put me right. So, traditional boiler or system boiler? Should I consider an unvented system, but bearing in mind the pressure isn't that high? When is a thermal store a good idea? (I don't have a back boiler, just mains gas and solar PV) Stick with a vented cylinder, but upsize it to say 250L? Any recommended that can have a couple of immersions and have very good insulation ?

Yes, then I saw a multi room isn't much more. Originally I was going to get two extractors fitted, which are a lot cheaper, but I was wondering if it was worth getting something that'll recover some of the heat and provide ventilation as the bathroom ceilings have gone mouldy.

Interesting - I thought people were hard up etc wonder where all the cash is coming from? Thanks for the tips.

Something like this: