Rob Foster
Esteemed
Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
Hi,
Sorry but why?
Your speaking to the intellectually challenged here so I need as much info as possible and, at what cost? (best/worst case scenarios)
You will now be heating your hot water in a hot water cylinder as such you don’t need the instantaneous hot water from a combi boiler so get the system boiler
Rob Foster
Esteemed
Its obvious, you are wanting high volumes of hot water a combi will just rob the unvented stored water and the system set up is ideal for your requirements ....combis are really for flats and little gaffs with one bathroom ...thats what they were designed for in Europe originally but they got railroaded in uk by basic heating outfits that dont know how to do anything else. Then the manus jumped on the bandwagon producing super combis that have a cat in hells chance of supplying the volume advertised because it is not available all the time from the utility whom have no legal responsibility to supply silly large volumes.....you could put in a conventional system with large volume high level intermediate cold water storage and never look back ...but its old fashioned ...I have one its ace.
centralheatking
Last edited:
W
Welder
They dont make my boiler any more either, but I'll not be changing it just cos some clutz who wants to make a killing at my expense says so...
Decide whats important here will you. Your shower performance via our advice or some chap selling you a new boiler. Your home. Your choice. However, pushing/waiting for advice to match half of what someone else has said is sure to pi55 us off 🙄🙂
Sorry, it’s not my intention to pi55 anyone off and your advice is greatly appreciated but, is advice not something that’s fundamentally important to making the correct decision?
It’s shower performance that’s at the top of my priority and always has been. Quotes saying “it’s obvious” don’t actually help much either when in actual fact it’s defiantly not obvious (not to me anyway).
Then, after a dozen or so posts one comes back saying a system boiler is what I need to install, if it is then that’s what I’ll go for, pending further advice of course.
So, with a total outlay of about £11-12k coming up on a new bathroom with 2 decent shower outputs I’ll be pi55 img off a few more people till I get it right.
If I can take you back to the grass roots of advice, the more I have the more prepared I am at challenging the so called sales people who are knocking on my door and, are after nothing more than a commission based sale with what they want to sell me, as apposed to what I actually need i.e. British Gas quote of £4800 for a highflow 550CDi which would have made not a jot to my shower performance.
Rob Foster
Esteemed
Just do what you like, we the collective wisdom have all advised you the route you should take, there is little more to tell you. Strangely on this one we all agree on where you should head. Best advice in uk freely given let us know what you put in and how it performs
we like feedback
Rob Foster aka centralheatking
W
Welder
Best advice you'll get on here is:
1 - Put away any preconceived ideas
2 - Do not go with BG. Their business is sales, NOT your satisfaction.
3 - Find a local plumber, set out your 'problem' (note NO opinions) and ask for their honest advice. Listen to it, heed it.
4 - If #3 does not recommend an UVC then find another.
Ok thank you. Will go for that advice. Thanks to all who chipped in. Sorry if it came across that I was not appreciative of everyone’s input, that was not my intention.
Ok so,
After some sound advice on here, it Looks like a 300l unvented cylinder and, Worcester 27i system boiler, some pipes both gas and water upgraded/bigger diameter, Digital controls, thermostat and some other plumber speak stuff including electrics etc.... all for £4.2k..... does that seem about reasonable?
Thanks for everyone’s input
After some sound advice on here, it Looks like a 300l unvented cylinder and, Worcester 27i system boiler, some pipes both gas and water upgraded/bigger diameter, Digital controls, thermostat and some other plumber speak stuff including electrics etc.... all for £4.2k..... does that seem about reasonable?
Thanks for everyone’s input
If your mains pressure is high enough (i.e. your cold shower is strong enough), and you have space, I would go with an unvented plain steel cylinder that contains a single corrugated stainless or copper hot water coil. They are often called hygienic cylinders because the hot water that comes out does not sit in the tank, only in the coil, so there is no worry of legionella. This should cost around 1.5K for the cylinder, pump for the radiators, expansion vessels and bits, plus labor of course.
If you go that route, whether you change your boiler or not is an independent decision, but if you do, you don't need a combi (as Riley said), you just need a normal (system?) boiler that does not do hot water and is simpler/cheaper.
Disclaimer: I am not a plumber, but I do have decent showers. Cheers.
I am suggesting that if you have choice, it is better to have the boiler water in the tank, and the fresh in the coil, rather than the other way around.
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