Best whole-house water filters
17 filters we track qualify; the lowest first-year cost for 2 people: the iSpring WGB21B 2-stage whole-house ($299 first year), the Waterdrop WHF21-FG iron & manganese whole-house ($360 first year), and the Waterdrop WHF3T-PG whole-house ($489 first year). Of these, 1 are certified for lead and 2 for PFAS; 15 have no certified health-related reduction we track. Whole-house filters, ranked by first-year cost (purchase price plus replacement filters) for a household of 2, cheapest first.
First year = purchase price + replacement filters for 2 people (0.28 gal per person a day for drinking-water filters, 58.6 for whole-house), from brand prices checked 2026-10-23. Calculate for your household.
