Sometimes when small things in life go wrong, the fix, on rare occasions, is easy – even pleasant. I have a kitchen sink faucet I put in about 8 years ago, made by Kohler. I bought it at Lowe's and installed it myself. It's a fairly standard single lever faucet with a hand spray – not an expensive item.
Recently a leak began around the base of the faucet. I know how to fix that, replace the O ring and bearing. Kohler sells both items as one repair "kit". I went on Saturday to a plumbing parts store, but that kit was out of stock. The guy there suggested I call Kohler and order it direct from them.
I did that this morning, and learned my faucet is still under warranty. They would send me the parts free of charge. How many would I like? I asked for two. No problem
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By the way, customer service was in Wisconsin where Kohler headquarters is located. No customer service reps from Mumbai. Apparently, Kohler never heard of of the so-called customer service plans most cable companies use.
Other faucet makers may also be good, but I recommend Kohler because they went out of their way to provide free repair parts for my faucet.