Depends on what make and size of boiler it is.whether this is OK for a combi boiler.
Vaillant ecoFIT pure 35kWDepends on what make and size of boiler it is.
waste of many putting such a big combi in at 12.5 by time its passed through valves and plate that will have restricted the flow down quite a bit . You would get away with a 24kw combi which will give you 10l at the 35 degree temp riseVaillant ecoFIT pure 35kW
Waste of money in terms of upfront costs or running costs? We're only being offered 35 unfortunately. Advice is so conflicting - we've had quotes saying 30kw is right and others saying 40!waste of many putting such a big combi in at 12.5 by time its passed through valves and plate that will have restricted the flow down quite a bit . You would get away with a 24kw combi which will give you 10l at the 35 degree temp rise
in upfront costs . Anyone saying 12.5 is perfect is talking nonsenseWaste of money in terms of upfront costs or running costs? We're only being offered 35 unfortunately. Advice is so conflicting - we've had quotes saying 30kw is right and others saying 40!
Some say our water is perfect others that we need to spend on increasing the flow and digging up our drive.
I think it would be easiest to go back to coal - lol.
I agree. What I can't understand is how good or bad it is in practice. Clearly the plumbers quoting only care if it makes water hot, but we obviously want to improve what we have and be trouble free. Happy to wait 15-20 mins to run a bath (better than waiting an hour to re-fill a cylinder).in upfront costs . Anyone saying 12.5 is perfect is talking nonsense
It would be a pretty old cylinder that would take that long to recover a cylinder TBH - a modern cylinder with a high recovery coil could have it @ 70% , from anywhere around 20 odd mins if on DHWP @ ~18Kw (cylinder size dependent)better than waiting an hour to re-fill a cylinder
The cylinder is 35 years old, same as the current boiler.It would be a pretty old cylinder that would take that long to recover a cylinder TBH - a modern cylinder with a high recovery coil could have it @ 70% , from anywhere around 20 odd mins if on DHWP @ ~18Kw (cylinder size dependent)
Where is the 12.5L/min figure coming from if the taps run @ 6L/min or is that when they are both running at the same time? Is the 3L/min from the shower an electric shower?
.... and they didn't give you dynamic readings? That's a bit pointless as static readings are not that important when it comes to day to day use, real life usage would always be based around dynamic readings.static 12.5L/min and 1.8 Bar is from one of the very respected local plumbing firms who quoted us for a 40kw Combi.
No dynamic readings given..... and they didn't give you dynamic readings? That's a bit pointless as static readings are not that important when it comes to day to day use, real life usage would always be based around dynamic readings.
If they are well respected and then quoting any boiler, never mind a huge 40Kw combi, on those readings, then their reputation is not deserved IMO. How many bathrooms, showers etc does the property have?
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local