-rick-

So do you notice the mismatched colour? Would you mind sharing a photo or two? You are clearly happy with things, but I've never got on with mixed colour temps in the same space though because I've always been careful I've never lived with it, just noticed in other places so I'm really curious to see if it can be made to work with careful application.

This surprised me. I assume you are thinking you want to avoid the need to get steps/ladder to silence the alarm after accidentally setting it off? Can't say I've ever set off my fire alarms since I've been living here >10 years and that involves some occasionally smokey cooking. If it's been a problem for you, maybe consider if your alarms are set right (heat alarms in cooking areas, etc)?

Amen! There is Loxone and KNX at the 'low-end' and moving up there are companies like Lutron and Control4 that do stuff (been a while since I looked so might be out of date). Nothing really accessible unless you want to spend fortune on it along with specialist installers and maintenance contracts. I'm seeing a lot more commercial building solutions so maybe these filter down at some point but not getting my hopes up. The market will be dominated by Matter/Thread I've seen people plaster in mm-Wave sensors to the ceiling though can't find it right now. Some smart light switches have presence sensors behind the switch (again dont have a link). Saw this most recently whose features seem attractive, but it's not hidden (ceiling mountable though and the visible PIR sensor is removable). https://shop.everythingsmart.io/products/everything-presence-pro I wouldn't trust these sort of things to HA anyway. Best bet in my book is add monitoring to the alarm signal wire in traditional wired alarms. That way your HA system can get notification of an issue (to send alerts if you are out of the house or whatever). Not currently building but I certainly plan to have water leak detection and automatic shut off would be good.

Welcome!

Keeping my fingers crossed this makes life easier for those of us still looking for somewhere suitable. Also, credit where credit is due, @Daniel H saw this first:

So do you ever have mixed colour temps? I'd guess from your description you don't have tasklighting switched on at the same time as non-matched CCT output from the strips. I can see how that works in many cases I care about (dawn simulation, dark day light boost) but I'm a little hesitant how well it would work as day extension. If you don't mind, I'd love to hear about how you use the varying CCTs in practice? 🙏

It feels of another place. Not common British style but we should have more variety in this country. So long as it suits its immediate surroundings. Lovely.

What are the LEDs? Bulbs or strips? I've not found much that is externally controlled CCT in bulb form.

I thought I'd read that 18mm was the standard for accessible (or convertable) bathrooms (attached to wall at 400mm centres IIRC).

Can't you buy a data SIM like: https://www.three.co.uk/broadband/data-sim-payg Edit: see you mention preference for O2 / EE. Look for mobile broadband or packages for tablets. EE have a whole line of Mobile Broadband offers, not sure they are sim only but if you are looking for a router too then worth a look.

The dynamic adjustment of temperature via opentherm is one of the reasons I went this route and Wiser is fully dynamic in this. If I set my system to regulate temperature in my cold room (starting from cold) it will set the water temp to maximum until the room temp is within about 0.5C of setpoint and will then moderate it down to whatever it needs for steady state. @gaz_moose I don't know how techie you are but if feel able to I thoroughly recommend setting up HomeAssistant and installing the Wiser plugin. It lets you see what's going on and understand your system better including how often your boiler cycles. I'm not sure that Wiser is great at handling cycling when using opentherm. I suspect if your heating system is well designed then it should work ok but with mine (which is badly designed) it doesn't handle things great. I'm still working through how I want to manage this but you really want to avoid frequent cycling so if that's happening in your case then you may want to take extra steps. (If Home Assistant is a step too far, then standing in front of the boiler and watching it for 20 mins while the temp is steady state will show you how much it cycles). An easy one that seems to work is to have the scheduler regularly adjust the set point up/down by 0.5C as the cycling seems to happen when very close to set point.

Their FAQs are very informative: https://buffalomachines.co.uk/pages/faqs Website says they have 30 years combined industry experience but company only incorporated in 2023: https://find-and-update.company-information.service.gov.uk/company/15271611 Looks like they are just a UK importer of Chinese machines. So whether you actually benefit from going to them IDK. Maybe warranty issues, but adding the middle man might not help much in reality

Ideas to consider: 1. Don't split any loop between areas, put separate loops. 2. For routing the pipes for the loops for the second phase, either use conduit as @Nickfromwales to allow you to install the pipes when you are doing the second phase, or look to see if you can route pipes in walls/ceilings between areas. 3. Maybe it makes sense to have two manifolds, one for phase 1 and one for phase 2. Then you just have to route 2 (bigger) pipes between the two locations.* * Some nuances here that needs careful thought but worth considering if other options difficult.

You'd need a very big PHE. The flow through pool heatpumps is huge compared to CH. If you have to upsize the domestic heatpump you may also lose out financially. Pool heatpumps are super cheap compared with domestic ones. Feels like this is something so outside your normal heat pump installers wheelhouse, that you'll either be paying them a huge amount to learn on the job and develop a bespoke solution for you or you'll scare them all off.

I thought pool heat pumps had fairly different optimisations from domestic ones so trying to mix them would not be advisable. @SBMS wants cooling anyway so I think needs a separate system on that basis.