Our single stem kitchen faucet has become frozen in place and subsequently corroded with hard water deposits from the untreated cold water supply line. (The rest of the water in the home runs through a softening/iron filter process.) What are the qualities to look for in a new faucet that would make it perform better under these conditions?
I prefer the single stem style but would not object to a single stem that bridges into a two handled tap (like an antique faucet).
Or, alternatively, would it be best to get an under-sink iron filter on the cold water line to prevent the problem in the first place before we switch out the faucet?
Any opinions or past experience with this problem would be welcome and I thank you in advance for your time.