Now we’re getting serious. Under-sink filters are the quiet achievers. They tuck away under your sink and feed a separate faucet.
Prices start around $50 for basic models. Fancy ones with multiple stages? They can hit $300 to $500. Yes, really.
Replacement filters for these cost about $30 to $80 per year. But the installation? Unless you’re a plumber in disguise, you might need to pay $100 to $200 for a pro. Ouch.
