Workerbee

Thank you, yes you're right, but I'm putting a stone floor down in the kitchen so I'm keen to have something to take the chill off it just in that room. So that's why I'm wondering about whether to go electric ufh just as a secondary heat source, or install wet ufh (in combination with a thermal store that does heating) which can potentially be upgraded to a primary heat source if I get a heat pump one day. For primary heating, storage heaters definitely make most sense, but I've actually been looking at oil filled radiators, partly because I haven't found any storage heaters I like the design of (daft, I know, because it'll end up costing me), and partly because I always think of the bad rep of storage heaters of old. But I presume they're a lot better now? You mentioned about a uvc lasting all day - what sort of size would I need? Plumbers I spoke to suggested around 150l for 2 people. So I'm thinking maybe the 210l if I went the thermal store route, to make up for the different way it loses heat. I suppose you can always increase your stored hot water by increasing the temp, but I'm feeling it would be better to oversize than undersize a cylinder, whatever type it is.

Thank you for the reply. I will have a look into the specs you mention, particularly things such as standing heat losses, but it is good to know thermal stores are not old tech. The fact uvcs seem far more prevalent made me suspicious that thermal stores must have some major flaw, particularly as they seem to carry benefits such as potential self-installation. Do you find 200l is more than enough? It would be supplying two of us having showers. There was also a thread I found that mentioned thermal stores need to be oversized compared to uvcs. I suppose for those thermal stores that can supply heating as well, it would need to be even bigger. That's another puzzle: whether to get wet ufh and a compatible thermal store, to hopefully have a future proofed setup I can add a heat pump to in the future, or just focus on dhw and have separate electric ufh, and lean into being a 'dry' electric house and hoping battery tech moves forward, solar becomes more efficient for my small roof etc.

Hello everyone, I'm replacing my vented direct dhw cylinder in a one-bed all-electric house and I was planning on having an uvc installed. But then I came across the idea of a thermal store. This would still give mains pressure hot water - important for a good shower - but also seemed to provide additional benefits: - no g3 requirement so I could install it myself - no annual service - some of them can run ufh as well as dhw. So rather than installing electric ufh, I could maybe put in wet ufh which might future-proof me if I ever want a heat pump etc. But: - I've read people saying thermal stores have had their day and they've been superceded by uvcs - It sounds (from a different thread on here) like I'd need a larger size compared to an uvc because of the way they lose heat A lot of the YouTube videos I've found about thermal stores seem to be about 10 years old. Am I looking at old tech or might it be a good fit for me? Thanks!