Yes, I have read this before. But one of our remaining questions is whether a combi boiler is suitable in a scenario where two showers run simultaneously, i.e. one person has a shower, and then a second shower is turned on. I know this can cause issues (e.g. sudden temperature variations in the first shower). Does a combi boiler with integrated hot water tank address this sufficiently? Is there anything else we need to consider? Does an integrated hot water tank address other weaknesses of combis, e.g. constant hot water at a low flow rate?
Space is at a premium, and that is one of the main attractions of a combi for us. But should we consider a system boiler & separate hot water tank instead given our requirements?
If a combo with integrated water tank is suitable, what do we need to consider to decide on specifications (e.g. size of the integrated water tank)? What are good boiler models that should make our short list?
Water pressure and flow are fine, and we are not considering an open system.
I appreciate you sharing the general information re pressure requirements, but they don't address my questions.
My question is how to get the right advice given our specific situation.
When we first had a (worcester bosch) combi boiler installed in a previous place the pressure and flow were assessed as very good. But if, while having a shower, the got water tap was used in either the kitchen or the
Sorry, if a HOT water tap was used... in kitchen or bathroom wash basin, there was a noticeable temperature change.
After installing a high quality (Grohe) temperature regulation valve the problem was reduced, but not eliminated.
We were told this was a 'feature' of a combi boiler. And that this problem could be addressed by using a combi with integrated hot water store.
But I don't know whether this is true, and whether it is true in the case of the situation I have described (i.e. two simultaneous showers).
If it is, I would appreciate some further info, e.g. recommended manufacturer & models etc.
Alternatively I would be happy to know how to get this info.
Hi Andrew, can I just try to understand: the suggestion of the pressurised water cylinder would involve a system boiler, not a combi boiler, right?
And the difference between that and the combi with thermal store is just that in the latter case the reservoir of hot water is smaller?
So theoretically if we could find a combi boiler with a sufficiently large thermal store the quality of showers would be identical to the solution with the pressurised cylinder?
If not, how would we notice a difference?