[
  {
    "id": "springwell-cf1",
    "name": "SpringWell CF1 Whole House Water Filter",
    "brand": "SpringWell",
    "tier": "mid",
    "priceLow": 1144,
    "priceHigh": 1160,
    "score": 9.2,
    "bestFor": "Best overall for city water — the set-and-forget tank system",
    "url": "https://homewaterfilterguide.com/filters/springwell-cf1/",
    "flowRateGpm": 9,
    "peakFlowGpm": 20,
    "capacityGallons": 1000000,
    "mediaShort": "Catalytic carbon + KDF",
    "certShort": "NSF 42/53 components",
    "waterType": "city",
    "annualFilterCost": 35,
    "releaseYear": 2019,
    "warranty": "Lifetime on tank, valves and housings; 6-month satisfaction guarantee",
    "filterLife": "1,000,000 gal (~6–10 yrs); pre-filter every 6–9 mo",
    "media": "Catalytic coconut-shell carbon + KDF media in an upflow tank, with a 5-micron sediment pre-filter"
  },
  {
    "id": "springwell-cf4",
    "name": "SpringWell CF4 Whole House Water Filter",
    "brand": "SpringWell",
    "tier": "mid",
    "priceLow": null,
    "priceHigh": null,
    "score": 8.8,
    "bestFor": "Best for larger homes — the CF1's formula at 12 GPM for 4–6 bathrooms",
    "url": "https://homewaterfilterguide.com/filters/springwell-cf4/",
    "flowRateGpm": 12,
    "capacityGallons": 1000000,
    "mediaShort": "Catalytic carbon + KDF",
    "certShort": "NSF 42/53 components",
    "waterType": "city",
    "annualFilterCost": 35,
    "releaseYear": 2019,
    "warranty": "Lifetime on tank, valves and housings; 6-month satisfaction guarantee",
    "filterLife": "1,000,000 gal (~6–10 yrs); pre-filter every 6–9 mo",
    "media": "Catalytic coconut-shell carbon + KDF media in an upflow tank, with a 5-micron sediment pre-filter"
  },
  {
    "id": "aquasana-healthshield",
    "name": "Aquasana HealthShield Whole House Water Filter",
    "brand": "Aquasana",
    "tier": "premium",
    "priceLow": 2099,
    "priceHigh": 2099,
    "score": 9,
    "bestFor": "Best certified PFAS reduction — the only whole-house system WQA-certified to NSF/ANSI 53 for PFAS",
    "url": "https://homewaterfilterguide.com/filters/aquasana-healthshield/",
    "flowRateGpm": 6,
    "capacityGallons": 165000,
    "mediaShort": "GAC blend + smart monitor",
    "certShort": "WQA: NSF/ANSI 53 + 401",
    "waterType": "city",
    "annualFilterCost": 260,
    "releaseYear": 2025,
    "warranty": "10-year limited warranty",
    "filterLife": "165,000 gal; media replacement roughly every 3–5 yrs",
    "media": "Specialized granular activated carbon blend in a compact single tank, with Smart Flow Monitor touchscreen"
  },
  {
    "id": "aquasana-rhino-eq1000",
    "name": "Aquasana Rhino EQ-1000 Whole House Water Filter",
    "brand": "Aquasana",
    "tier": "mid",
    "priceLow": 999,
    "priceHigh": 1998,
    "score": 8.6,
    "bestFor": "Best certified chlorine reduction — NSF/ANSI 42 tested to 97% for a million gallons",
    "url": "https://homewaterfilterguide.com/filters/aquasana-rhino-eq1000/",
    "flowRateGpm": 7,
    "peakFlowGpm": 14.6,
    "capacityGallons": 1000000,
    "mediaShort": "Carbon + KDF, dual tank",
    "certShort": "NSF/ANSI 42 certified",
    "waterType": "city",
    "annualFilterCost": 120,
    "releaseYear": 2016,
    "warranty": "10-year limited warranty; 90-day guarantee",
    "filterLife": "1,000,000 gal (~10 yrs); pre/post filters every 2–6 mo",
    "media": "Carbon + KDF + catalytic carbon dual-tank system with sediment pre-filter and 0.35-micron post-filter"
  },
  {
    "id": "kind-e1000",
    "name": "Kind Water E-1000 Whole House Water Filter",
    "brand": "Kind Water",
    "tier": "mid",
    "priceLow": 770,
    "priceHigh": 976,
    "score": 8.5,
    "bestFor": "Best for DIY install — wall-mount cartridges, no tank, take it when you move",
    "url": "https://homewaterfilterguide.com/filters/kind-e1000/",
    "flowRateGpm": 15,
    "capacityGallons": 100000,
    "mediaShort": "Carbon block cartridges",
    "certShort": "NSF 61/372 components",
    "waterType": "both",
    "annualFilterCost": 180,
    "releaseYear": 2020,
    "warranty": "Limited lifetime warranty",
    "filterLife": "~100,000 gal; cartridges roughly yearly",
    "media": "High-surface-area carbon block + washable 20-inch pleated sediment filter; optional salt-free softener module"
  },
  {
    "id": "ispring-wgb32b",
    "name": "iSpring WGB32B 3-Stage Whole House Water Filter",
    "brand": "iSpring",
    "tier": "budget",
    "priceLow": 420,
    "priceHigh": 517,
    "score": 8.2,
    "bestFor": "Best budget pick — the Amazon favorite for simple chlorine/sediment filtration",
    "url": "https://homewaterfilterguide.com/filters/ispring-wgb32b/",
    "flowRateGpm": 15,
    "capacityGallons": 100000,
    "mediaShort": "3-stage Big Blue",
    "certShort": "Meets NSF/ANSI standards",
    "waterType": "both",
    "annualFilterCost": 126,
    "releaseYear": 2017,
    "warranty": "1-year limited warranty; lifetime US-based tech support",
    "filterLife": "100,000 gal (~1 yr for a family of 4)",
    "media": "3-stage 20\"x4.5\" Big Blue: sediment + coconut-shell GAC + carbon block"
  },
  {
    "id": "ispring-wgb32b-kds",
    "name": "iSpring WGB32B-KDS 3-Stage Whole House Water Filter",
    "brand": "iSpring",
    "tier": "budget",
    "priceLow": 633,
    "priceHigh": 690,
    "score": 8.4,
    "bestFor": "Best budget pick for hard water — anti-scale plus heavy-metal reduction",
    "url": "https://homewaterfilterguide.com/filters/ispring-wgb32b-kds/",
    "flowRateGpm": 15,
    "capacityGallons": 250000,
    "mediaShort": "Anti-scale + KDF compound",
    "certShort": "Meets NSF/ANSI standards",
    "waterType": "both",
    "annualFilterCost": 150,
    "releaseYear": 2022,
    "warranty": "1-year limited warranty; lifetime US-based tech support",
    "filterLife": "250,000 gal",
    "media": "Sediment + FWDS150K anti-scale + GAC/KDF compound + carbon block; targets lead, mercury, chloramine, H2S"
  },
  {
    "id": "express-water-heavy-metal",
    "name": "Express Water Heavy Metal 3-Stage Whole House Water Filter",
    "brand": "Express Water",
    "tier": "budget",
    "priceLow": 548,
    "priceHigh": 550,
    "score": 8.1,
    "bestFor": "Best budget heavy-metal system — KDF + anti-scale with gauges on every stage",
    "url": "https://homewaterfilterguide.com/filters/express-water-heavy-metal/",
    "flowRateGpm": 15,
    "capacityGallons": 100000,
    "mediaShort": "KDF + anti-scale + carbon",
    "certShort": "NSF certified filters",
    "waterType": "both",
    "annualFilterCost": 140,
    "releaseYear": 2019,
    "warranty": "1-year limited warranty",
    "filterLife": "100,000 gal; cartridges every 6–12 mo",
    "media": "KDF heavy-metal + polyphosphate anti-scale + activated carbon block, on a stainless stand with pressure gauges"
  },
  {
    "id": "apec-cb3",
    "name": "APEC CB3-SED-KDF-CAB20-BB Whole House Water Filter",
    "brand": "APEC",
    "tier": "budget",
    "priceLow": null,
    "priceHigh": null,
    "score": 8,
    "bestFor": "Best for iron-heavy well water on a budget — KDF85 targets iron, lead and H2S",
    "url": "https://homewaterfilterguide.com/filters/apec-cb3/",
    "flowRateGpm": 12,
    "capacityGallons": 100000,
    "mediaShort": "Sediment + KDF85 + carbon",
    "certShort": "Standard Big Blue housings",
    "waterType": "both",
    "annualFilterCost": 220,
    "releaseYear": 2018,
    "warranty": "1-year limited warranty",
    "filterLife": "100,000 gal; replacement set ~$220",
    "media": "3-stage 20\"x4.5\" Big Blue: pleated sediment + KDF85 + sediment/carbon 2-in-1"
  },
  {
    "id": "pelican-pse2000",
    "name": "Pelican PSE2000 Filter + Salt-Free Conditioner",
    "brand": "Pelican (Pentair)",
    "tier": "premium",
    "priceLow": 2599,
    "priceHigh": 3099,
    "score": 8.3,
    "bestFor": "Best filter + softener-alternative combo — chlorine filtration and scale control in one",
    "url": "https://homewaterfilterguide.com/filters/pelican-pse2000/",
    "flowRateGpm": 15,
    "capacityGallons": 1324800,
    "mediaShort": "Carbon + salt-free conditioner",
    "certShort": "Third-party scale testing",
    "waterType": "both",
    "annualFilterCost": 60,
    "releaseYear": 2017,
    "warranty": "Limited lifetime on tanks; 5-year performance guarantee",
    "filterLife": "~1.3M gal / 5 yrs media; sediment every 6–9 mo",
    "media": "GAC + KDF-55 carbon tank + 5-micron sediment pre-filter + NaturSoft salt-free scale conditioning tank"
  },
  {
    "id": "softpro-chlorine-fluoride",
    "name": "SoftPro Chlorine+ Fluoride SUPER Filter",
    "brand": "SoftPro",
    "tier": "mid",
    "priceLow": 1267,
    "priceHigh": 1267,
    "score": 8.4,
    "bestFor": "Best for fluoridated city water — bone char targets fluoride where carbon can't",
    "url": "https://homewaterfilterguide.com/filters/softpro-chlorine-fluoride/",
    "flowRateGpm": 10,
    "capacityGallons": 1000000,
    "mediaShort": "Catalytic carbon + bone char",
    "certShort": "Catalytic carbon + bone char",
    "waterType": "city",
    "annualFilterCost": 40,
    "releaseYear": 2021,
    "warranty": "Lifetime warranty",
    "filterLife": "1,000,000 gal",
    "media": "Upflow catalytic carbon + bone char dual media; targets chloramine, chlorine, fluoride, PFAS"
  },
  {
    "id": "springwell-lcr",
    "name": "SpringWell LCR Whole House Lead & Cyst Filter",
    "brand": "SpringWell",
    "tier": "premium",
    "priceLow": 1544,
    "priceHigh": 1544,
    "score": 8.2,
    "bestFor": "Best for lead concerns — purpose-built for old pipes and city infrastructure",
    "url": "https://homewaterfilterguide.com/filters/springwell-lcr/",
    "flowRateGpm": 8,
    "capacityGallons": 100000,
    "mediaShort": "Carbon block, lead + cyst",
    "certShort": "NSF/ANSI 53 components",
    "waterType": "city",
    "annualFilterCost": 400,
    "releaseYear": 2022,
    "warranty": "Lifetime on tank and housings",
    "filterLife": "100,000 gal per cartridge set",
    "media": "Ultra-dense 2-stage carbon block; rated 99.95% lead reduction plus cysts"
  },
  {
    "id": "aqua-pure-ap904",
    "name": "Aqua-Pure AP904 Whole House Water Filter",
    "brand": "Aqua-Pure",
    "tier": "budget",
    "priceLow": 411,
    "priceHigh": 485,
    "score": 7.6,
    "bestFor": "A city-water home that wants better taste, less chlorine and sediment at a lower price",
    "url": "https://homewaterfilterguide.com/filters/aqua-pure-ap904/",
    "flowRateGpm": 20,
    "capacityGallons": 100000,
    "mediaShort": "Carbon block + scale inhibition",
    "certShort": "NSF 42",
    "waterType": "city",
    "warranty": "25-year limited (per aquapurefilters.com and Forbes Home)",
    "filterLife": "100,000 gal (Forbes notes some customers report less)",
    "media": "Carbon-activated filter block with scale-inhibition media (per seller)"
  }
]