{
  "name": "Duschfilter-Kostenvergleich: Kaufpreis und Folgekosten",
  "canonical_url": "https://duschfilter.com/duschfilter-kosten-rechner",
  "checked_at": "2026-07-19",
  "currency": "EUR",
  "periods_months": [
    12,
    24,
    60
  ],
  "formula": "purchase_price + max(0, ceil(period_months / replacement_interval_months) - included_units) * replacement_price",
  "methodology": "For provider-stated interval ranges, the longer interval produces the minimum and the shorter interval produces the maximum. Partial usage intervals are rounded up to a whole unit.",
  "exclusions": [
    "shipping costs",
    "coupons and temporary discounts",
    "optional subscriptions",
    "future price changes"
  ],
  "evidence_boundary": "This is a cost comparison, not an efficacy, quality, clinical, or laboratory ranking. Prices, lifetimes, package contents, and intervals remain source-dated provider or merchant information.",
  "records": [
    {
      "id": "philips-awp1775ch-cost",
      "product_id": "philips-awp1775ch-inline-duschfilter",
      "brand": "Philips",
      "model": "Philips AWP1775CH Inline-Duschfilter",
      "canonical_product_url": "https://duschfilter.com/shop/philips/philips-awp1775ch-inline-duschfilter",
      "purchase_price_eur": 26.99,
      "replacement_price_eur": 21.69,
      "replacement_kind": "Kartusche",
      "included_units": 2,
      "replacement_interval_months": {
        "minimum": 4,
        "maximum": 6,
        "provider_stated": true
      },
      "package_description": "Gerät mit eingesetzter Kartusche plus einer Ersatzkartusche",
      "purchase_path_germany": "Mehrere deutsche Händler",
      "calculated_total_cost_eur": {
        "12": {
          "minimum": 26.99,
          "maximum": 48.68,
          "minimum_paid_replacements": 0,
          "maximum_paid_replacements": 1
        },
        "24": {
          "minimum": 70.37,
          "maximum": 113.75,
          "minimum_paid_replacements": 2,
          "maximum_paid_replacements": 4
        },
        "60": {
          "minimum": 200.51,
          "maximum": 308.96,
          "minimum_paid_replacements": 8,
          "maximum_paid_replacements": 13
        }
      },
      "calculation_note": "Bei sechs Monaten reichen die zwei enthaltenen Kartuschen für das erste Jahr. Bei vier Monaten wird eine weitere Kartusche benötigt.",
      "sources": {
        "purchase": "https://www.idealo.de/preisvergleich/OffersOfProduct/201820482_-awp1775ch-philips.html",
        "replacement": "https://www.idealo.de/preisvergleich/OffersOfProduct/202925110_-awp1775-10-philips.html"
      }
    },
    {
      "id": "tappwater-showerpro-diamond-cost",
      "product_id": "tappwater-showerpro-diamond-shower-filter",
      "brand": "TAPP Water",
      "model": "ShowerPro Diamond Duschfilter",
      "canonical_product_url": "https://duschfilter.com/shop/tapp-water/tappwater-showerpro-diamond-shower-filter",
      "purchase_price_eur": 100,
      "replacement_price_eur": 35,
      "replacement_kind": "Kartusche",
      "included_units": 2,
      "replacement_interval_months": {
        "minimum": 6,
        "maximum": 6,
        "provider_stated": true
      },
      "package_description": "Jahrespaket mit Filtergehäuse und zwei Kartuschen",
      "purchase_path_germany": "Direktversand nach Deutschland",
      "calculated_total_cost_eur": {
        "12": {
          "minimum": 100,
          "maximum": 100,
          "minimum_paid_replacements": 0,
          "maximum_paid_replacements": 0
        },
        "24": {
          "minimum": 170,
          "maximum": 170,
          "minimum_paid_replacements": 2,
          "maximum_paid_replacements": 2
        },
        "60": {
          "minimum": 380,
          "maximum": 380,
          "minimum_paid_replacements": 8,
          "maximum_paid_replacements": 8
        }
      },
      "calculation_note": "Das Jahrespaket deckt zwölf Monate ab. Weitere Kartuschen werden mit dem ausgewiesenen Einmalkaufpreis von 35 Euro je Stück berechnet.",
      "sources": {
        "purchase": "https://tappwater.co/products/water-filter-showerpro-diamond-shower-filter",
        "replacement": "https://tappwater.co/products/water-filter-showerpro-diamond-shower-filter"
      }
    },
    {
      "id": "sydros-kalkbrecher-cost",
      "product_id": "sydros-kalkbrecher-duschfilter",
      "brand": "Sydros",
      "model": "SYDROS Kalkschutzfilter für die Dusche",
      "canonical_product_url": "https://duschfilter.com/shop/sydros/sydros-kalkbrecher-duschfilter",
      "purchase_price_eur": 74.95,
      "replacement_price_eur": 74.95,
      "replacement_kind": "Gerät",
      "included_units": 1,
      "replacement_interval_months": {
        "minimum": 24,
        "maximum": 24,
        "provider_stated": true
      },
      "package_description": "Ein wartungsfreies Gerät ohne Wechselkartusche",
      "purchase_path_germany": "Deutscher Direktshop",
      "calculated_total_cost_eur": {
        "12": {
          "minimum": 74.95,
          "maximum": 74.95,
          "minimum_paid_replacements": 0,
          "maximum_paid_replacements": 0
        },
        "24": {
          "minimum": 74.95,
          "maximum": 74.95,
          "minimum_paid_replacements": 0,
          "maximum_paid_replacements": 0
        },
        "60": {
          "minimum": 224.85,
          "maximum": 224.85,
          "minimum_paid_replacements": 2,
          "maximum_paid_replacements": 2
        }
      },
      "calculation_note": "Nach der vom Anbieter genannten maximalen Lebensdauer wäre das komplette Gerät und nicht eine Kartusche zu ersetzen.",
      "sources": {
        "purchase": "https://www.sydros.de/products/kalkbrecher",
        "replacement": "https://www.sydros.de/products/kalkbrecher"
      }
    },
    {
      "id": "rivoara-shower-filter-cost",
      "product_id": "rivoara-shower-filter",
      "brand": "Rivoara",
      "model": "Rivoara® Duschfilter",
      "canonical_product_url": "https://duschfilter.com/shop/rivoara/rivoara-shower-filter",
      "purchase_price_eur": 119,
      "replacement_price_eur": 29,
      "replacement_kind": "Kartusche",
      "included_units": 1,
      "replacement_interval_months": {
        "minimum": 2,
        "maximum": 3,
        "provider_stated": true
      },
      "package_description": "Gerät inklusive erster Kartusche",
      "purchase_path_germany": "Direktshop mit kostenlosem DE-Versand",
      "calculated_total_cost_eur": {
        "12": {
          "minimum": 206,
          "maximum": 264,
          "minimum_paid_replacements": 3,
          "maximum_paid_replacements": 5
        },
        "24": {
          "minimum": 322,
          "maximum": 438,
          "minimum_paid_replacements": 7,
          "maximum_paid_replacements": 11
        },
        "60": {
          "minimum": 670,
          "maximum": 960,
          "minimum_paid_replacements": 19,
          "maximum_paid_replacements": 29
        }
      },
      "calculation_note": "Die Rechnung nutzt die angebotenen Lieferintervalle von zwei oder drei Monaten und den Einzelpreis von 29 Euro. Der mögliche Abo-Rabatt von bis zu 15 % ist nicht eingerechnet.",
      "sources": {
        "purchase": "https://rivoara.com/products/rivoara-shower-filter",
        "replacement": "https://rivoara.com/products/rivoara-replacement-filter"
      }
    }
  ]
}