Renewable Heating Hub Forums - Recent Posts

RE: What is the Heat Geek Guarantee?

JamesPa — Wed, 10 Jun 2026 08:11:50 +0000

For the right property and when designed correctly, I think it's a good solution. But if space allows, I'd still lean towards a standard unvented cylinder.

Thanks. That's exactly what I was expecting/hoping for if it does in fact fill a niche. I think it's been clear all along that where a standard cylinder fits that is a better choice, but as you say some properties won't fit that profile.

RE: What is the Heat Geek Guarantee?

Michael Waring — Wed, 10 Jun 2026 08:04:39 +0000

@editor We've only installed one so far, a 60XS model, but it's performing well from a functionality point of view.

That said, I'd always choose a standard unvented cylinder where possible. They're generally more efficient and offer greater hot water storage capacity. The Mini Store isn't a direct replacement and needs to be designed carefully around the property's hot water demand and the overall heating system.

Our installation is in a small property with one shower, one basin and a kitchen sink. We also fitted 5 lpm flow restrictors to all outlets as part of the design. In that application, it's working well.

The Mini Store does have some advantages beyond being compact. There's no requirement for a D2 discharge pipe, which can make installation easier in certain properties, and it can be a useful option where space constraints make a conventional cylinder difficult or impossible.

For the right property and when designed correctly, I think it's a good solution. But if space allows, I'd still lean towards a standard unvented cylinder.

RE: What is the Heat Geek Guarantee?

Mars — Wed, 10 Jun 2026 07:40:25 +0000

@jamespa great question as we’ve not seen a single mention of the mini store on the forums.

RE: What is the Heat Geek Guarantee?

JamesPa — Wed, 10 Jun 2026 07:05:43 +0000

Since we have got onto cylinders, I was wondering if anyone had any experiences with the heat geek mini store in practice? It's obviously not 'ideal' but then neither is the world. Does it fill an important niche successfully. On the basis that Newark still advertised them I presume some have sold.

RE: NIBE 1140 - what is mean time before failure? Installed 2009 and now struggling to heat hot water

AliRam — Tue, 09 Jun 2026 23:18:31 +0000

Sadly we also have rodent damage to the hot water system but the immersion heaters have allowed us to isolate the leak and at least feed 1 shower.
good news all round.

I am most grateful. Thankyou everyone who replied .

RE: NIBE 1140 - what is mean time before failure? Installed 2009 and now struggling to heat hot water

AliRam — Tue, 09 Jun 2026 23:16:44 +0000

@editor thank you so much for- see below - we have immersions -very grateful 🙏🏻👏👏👏👏👏👏

RE: NIBE 1140 - what is mean time before failure? Installed 2009 and now struggling to heat hot water

AliRam — Tue, 09 Jun 2026 22:59:43 +0000

@ashp-bobba hi there everyone sorry to take so long to respond - you have all been so helpful.
we now have 2 immersions fitted to the hot water tanks - which actually is NiBE branded.
very very grateful to this forum for the heads up about possibility of immersion fitting.

RE: MCS 2.0 - Changes in January 2025

JamesPa — Tue, 09 Jun 2026 20:22:51 +0000

I so recognise that. My first employer, which I worked for for nearly 30 years, had an endless stream of quality initiatives culminating in 'six sigma', shortly after which it went bust. None of them made a scrap of difference, so far as I could tell (but they took up lots of time which otherwise could have been directed towards improving quality), and your observation fits perfectly.

Real quality IMHO arises from a mindset/culture combined with a high level of competence. Individuals need to be determined to do the right thing, not the expedient thing, and be given the freedom and support to do so. No amount of paperwork will ever instill that.

Perhaps that's a fatal and inevitable (?) flaw with organisations like MCS, which purport to instill quality into a disparate, independent, workforce over which they have no control.

RE: What is the Heat Geek Guarantee?

Michael Waring — Tue, 09 Jun 2026 20:07:25 +0000

@editor thanks for the tag Mars. We’ve fitted a number of them and they’ve performed well for our customers. They’re manufactured by Newark and, from the data I’ve seen, they’re among the most efficient hot water cylinders available, with very low standing losses. Open Energy Monitor posted recently that they are the best performing hot water cylinder on their database.. They are generally more expensive than many standard cylinders, so they won’t be the right choice for every project. That said, if efficiency is a key driver, they’re certainly worth considering. It’s also good to see that Newark have recently released an updated and modified version, showing they’re continuing to refine the product. As always, the cylinder still needs to be correctly sized for the property’s hot water demand, but overall our experience has been very positive.

RE: MCS 2.0 - Changes in January 2025

Judith — Tue, 09 Jun 2026 19:58:47 +0000

MCS are a classic quality issue. In every company that I’ve worked for all had quality systems at the highest level. But at no point was the quality of the Design or work or product ever assessed only ever the completion of the paperwork which describes the design, task or product. The key step was to make the quality system useful was the engineering work and the management of the work. In the right hands the paperwork was useful but it was never enough on its own.

MCS have never gone beyond the paperwork to the quality of the job.