joth

Be careful about the distance from WLED controller to the tape. As well as the usual voltage drop on a long line, it's also prone to interference. For example the WS2811 guideline is 10m maximum, but some people have problems even working within that

Jeez I've be telling y'all to give it a try for 5 years and the response is always Raspberry Pi blahblahblah (i stop listening after the first word) I've built or flashed esphome onto a couple co2 monitors, energy monitor, wled addressable strip light controller, radar motion sensor, 1-wire interfaces, a few modbus gateways, openevse car charger, various smart light bulbs and wall socket relays, probably a bunch other things i forget now lol I need to work through updating them all to esp32 though as the older esp2866 doesn't have enough flash for the standard stack of components I like to include in the build.

I also have a trade account with Future Automation in case anyone needs help with ordering

My car was sold as having a top speed of 140mph but I very rarely use that.

Interesting. i saw the Deege reference on the website, but AI did a better job of doxing the individuals connected with it. (Yay thanks AI) Deege did my battery install (and forgot to bill me for it for over a year lol), so the name did jump out. They're Kent based.

I fell over on this line lol. Who or what is WonderWatt? I mean, obviously it's this website: https://www.wonderwatt.com/ But their contact and about pages don't mention a company name/number, the the ToS doesn't even mention which country's law it is acting within. I'm curious where I'm sending my data if I sign up, but statements like "We will process your personal data in accordance with our Privacy Policy and in compliance with applicable data protection laws" are meaningless without stating who or where they are, and which country's law they are following.

But an mvhr unit has no way of measuring how much energy the building would be using on heating if it was to be used under some other hypothetical conditions, such as if it were turned off. It has measurements for air flow rate and incoming/outgoing air temperature so the only thing it can realistically tell you is how much energy it has recovered from the outbound air in the operating conditions it is actually working under.

Compared to running the fans but without any heat exchanger. What else could it be? This is obviously not a comparison of a leaky house vs airtight with mvhr, but as an mvhr designer it's the only sane number to provide, given the instrumentation available to the device.

According to the status page ours is reducing our heating demand by about 2000 MWh per year. So something like £50-400 per year savings, depending how much you pay for heating energy. But hard to place a figure on the air quality, cleanliness and health benefits. That's the primary reason I installed it, rather than for a bottom line cost saving

Haha well remembered - yes that is a problem we have in our house, but not one I've tried to solve through simultaneous ASHP heating and cooling. (Although a w2w heatpump would indeed allow pumping excess heat from the FCUs upstairs back down to the UFH downstairs) My solution is during the heating season, the ASHP is in heating mode only (for the UFH) and the bedrooms have additional fan bringing in cool air from outdoors as needed (essentially an MVHR mega-boost mode). This air intake fan shares duct work and electronic dampers with the FCU network.

That's a neat in-roof install method, great to see new innovations for making neat and cost efficient installs. ( I say new, maybe this is old hat but it's 6+ years since I researched RIS for my own install) Using battery to smooth out export within your export cap is excellent idea, but doing so optimally is an interesting problem in sunshine and price forecasting. Do you already have tech solution in mind for that?

Did I? I forget where i might have said that. Certainly, that's not the system i ended up with in my own home; we have a single 2 pipe monoblock

Funny enough the last electrician that worked on my CU (in 2024) complained it must have been installed (in 2021) by someone old school as black was sleeved as blue, and the modern convention is to eschew black as neutral. I just smiled and nodded (perhaps with a shut up and do what you're here to do vibe)

I have done both, and shared some views here earlier today TLDR separate AC is lower hassle if getting someone else to do it. All in one ashp is neater and probably cheaper, but you need to be even more the ball managing or DIY installing it

@SBMS 24kW cooling load?? If you're serious about meeting that, forget underfloor cooling and water heat pump, it won't delivery that. Talk to a commercial refrigeration expert Specifically: a 12kW heat pump will typically have a bit lower nominal cooling capacity (depends on model), but will have much much lower practical capacity unless you run it at around 5°C, with all the heavy condensation issues that brings up. UFH can't safely be run below 12°C minimum, and even then has lower effective emitter power in cooling than heating due to lack of convection currents. So I'd guess you'd get 4-6kW max effective cooling. At best you can run some modest cooling from the ashp in addition to an industrial sized A/C system to help support it. Good luck.