Mele, the OP has an OV stored system. He is now being persuaded to have a combi.
He expects to run two showers together which most combi systems cannot manage. But it all depends on the mains dynamic flow rate which no one has measured and the shower types and their flow rates.
My suggestions of the 937 or the 222 were storage combis which will give a higher flow rate for a short time.
I really cannot understand installers who quote for combis without having measured the dynamic flow rate or the shower flow rates. They must be short of work and very thick skinned in dealing with complaints of unexpected poor performance.
Tony
He expects to run two showers together which most combi systems cannot manage. But it all depends on the mains dynamic flow rate which no one has measured and the shower types and their flow rates.
My suggestions of the 937 or the 222 were storage combis which will give a higher flow rate for a short time.
I really cannot understand installers who quote for combis without having measured the dynamic flow rate or the shower flow rates. They must be short of work and very thick skinned in dealing with complaints of unexpected poor performance.
Tony
