Thanks Jeff for your suggestion. A long warranty like that is certainly reassuring.
I think one of they key points to consider, which I forgot to ask, would be what is the hot water generation like once the store has been depleted? Only wb seem to publish this data in their literature (19 l/m...
It's about time I replaced the back boiler open vented system in our house to a more modern system.
We have two bathrooms served by a piddly cylinder which doesn't keep up with demand.
I know from searching for similar discussions that an unvented system would be the preferable solution...