We compared 12 whole-house filtration systems on flow rate, media capacity, certifications and true 5-year cost, so you can stop guessing and start drinking better water.
One clear winner for each kind of home. Tap a card for the full review.
Best overall for city water — the set-and-forget tank system
Best certified PFAS reduction — the only whole-house system WQA-certified to NSF/ANSI 53 for PFAS
Best for DIY install — wall-mount cartridges, no tank, take it when you move
Best budget pick — the Amazon favorite for simple chlorine/sediment filtration
Swipe for more picks →
Filters vs. softeners vs. salt-free conditioners, explained.
Enter your bathrooms and water source to get the systems rated for your peak demand.
Size my systemUpfront price plus filter replacements — the true cost of every system we track.
Do the mathGot a water test back? Enter your contaminants and get the right system type.
Interpret my testA 5-step framework for choosing a whole house water filter: test your water, size flow rate, read certifications, pick tank vs cartridge, compare 5-year costs.
ComparisonResearch-based head-to-head of the SpringWell CF1 and Aquasana Rhino EQ-1000: media, flow rate, certifications, maintenance costs, and 10-year cost math.
ContaminantsWhat PFAS, PFOA, and PFOS are, why they matter, and which whole house filters have certified PFAS reduction — per maker specs and certifications.
Well WaterWhy well water needs different filtration than city water — iron, manganese, hydrogen sulfide, sediment — and which systems handle them, per maker specs.
ExplainerFilters remove contaminants; softeners address hardness. What 'salt-free softener' really means, how TAC conditioning works, and when you need both.
MaintenanceSediment cartridges every 3–6 months, carbon every 6–12 — but your water decides. The replacement schedule by media type, the signs you're overdue, and the gauge trick pros use.
We earn a commission when you buy through our links, but it never changes which system we recommend.
How we score filtersWe rank independent NSF/ANSI certification above marketing claims, and say which is which.
Flow rates, capacities and filter costs verified across manufacturers, reviews and owner reports.
Every recommendation prices five years of filter replacements, where budget systems really cost you.