As it’s about two years old now it’s time for an update, firstly filters are £80 each it uses two per year, after a year the control on the tap played up, they came and replaced the whole thing, we went to replace the filter last weekend and noticed that the scale control display has died, I also noticed that one of the push fit connectors was leaking, I replaced it, but interesting that they use the cheapest ones on the market, my guess the whole thing is made in China.
I would say for what they are they are massively overpriced and not very good quality, the convenience of a hot tap is great, but I would choose a different brand.