Well, I've never seen that before but I guess it's possible. But in my kitchen that would mean taking up space that's used by the countertop, boiler, or fridge.

Well, I've never seen that before but I guess it's possible. But in my kitchen that would mean taking up space that's used by the countertop, boiler, or fridge. Securing it to the wall and connecting it up to the water inlet I can easily imagine running into the several thousands to carry out.