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What are the advantages to this, over just having a suitably powerful combi boiler?
I’m scratching my head trying to convince myself that a ~40KW combi will suffice for our new family bathroom, downstairs toilet and 35m2 wet underfloor heating…
ectoplasmosis-
It’ll be overkill I suspect. You actually want a combi to be condensing and running at capacity rather than over size. The actual limiter is the flow rate for cold supply when looking at multiple showers etc
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So I have a combi in my house which does downstairs and the unvented upstairs that does all the showers.
You can generally get a better flow rate with a unvented if you’ve got multiple draw offs at one time, if you’ve got say one bathroom and you put in a big combi you’ll probs be ok and unvented is maybe a bit over kill.
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What are the advantages to this, over just having a suitably powerful combi boiler?
Combis tend to be put in the dumbest place in the house. So even if it can meet multiple demands the placement will not flatter it. Unventeds less so.
dbr
konastab01
Howard
You'll need a registered engineer to install it, but its basically a pressured hot water tank.
Ive got one in my house, really good.