So, let’s add it all up. For a typical under-sink RO system with professional installation, you’re looking at $300 to $900 upfront. For a whole-house system? That’s a whole different beast—expect $1,500 to $4,000. That’s like buying a used couch from a garage sale, but one that filters every drop of water in your home.
But here’s the kicker: you’ll save money over time. No more buying plastic bottles (goodbye, guilt trip). No more cringing at your tap water’s “flavor profile.” And your coffee? It’ll taste like it’s been brewed by angels who know their caffeine.
