Am fitting out a 5 bed property with 4 bathrooms and two kitchens, and underfloor heating, for multi occupancy.
I am considering a tank and boiler to feed all the hot water requirenments at peak times, mornings and eves, with a separate combi for the heating system.
Out of peak times (ie 16 hours of the day) the combi will supply the hot water instead, not the boiler (this will be switched off).
Am I right to think that keeping 300+ litres of water in a tank hot all day could be expensive - just on the off chance somone will take a shower in the day, and an on demand system more efficient for such off peak demands.
As a side question, a vented tank system would require a pump for the hot water supply to the showers ?, an unvented system does not require any pump - as it works on mains water pressure, but is more onerus in terms of installation cost and maintanence.
Any thoughts appreciated.
I am considering a tank and boiler to feed all the hot water requirenments at peak times, mornings and eves, with a separate combi for the heating system.
Out of peak times (ie 16 hours of the day) the combi will supply the hot water instead, not the boiler (this will be switched off).
Am I right to think that keeping 300+ litres of water in a tank hot all day could be expensive - just on the off chance somone will take a shower in the day, and an on demand system more efficient for such off peak demands.
As a side question, a vented tank system would require a pump for the hot water supply to the showers ?, an unvented system does not require any pump - as it works on mains water pressure, but is more onerus in terms of installation cost and maintanence.
Any thoughts appreciated.