Currently, I have a "standard" open vented hot water cylinder in and airing cupboard with a cold water tank in the roof.
Imminent boiler replacement may mean the renewal of my existing hot water cylinder (house built in 1985, very hardwater area). Might as well get one with a solar coil as I intended to add a thermal system in the near future.
Is there any point in moving to a mains pressure unvented system? Not bothered about freeing up roof space. Mains pressure hot water would be nice as I currently have a pump for the shower, however, there is no guarantee that mains pressure hot water (by the time it gets to the shower) will be as good as the pumped feed at the moment.
Are there any other reasons to move to a pressurised system, are they more efficient?
Thanks.