Here’s the deal: installing an RO system isn’t like buying a pack of gum. It’s more like buying a nice pair of sneakers—you get what you pay for. A basic under-sink system might set you back $150 to $400 for the unit itself. That’s about the same as a fancy dinner date—except this one doesn’t leave you with heartburn and a smaller wallet.
But wait! That’s just the hardware. Installation is its own little adventure. If you hire a plumber, expect to shell out an extra $150 to $500 for labor. That’s roughly the cost of a weekend getaway to a motel with a pool that’s “heated” (read: lukewarm).
