{
 "slug": "water-heaters",
 "name": "Water Heaters",
 "root": "home-kitchen",
 "unit": "L",
 "unit_as_designed": "ml",
 "unit_note": "For storage models, convert the listed tank capacity to ml (L \u00d7 1,000), multiplying by the number of heaters in a multipack. Tankless models have flow rates rather than stored volume, so do not compare their unit price per ml with storage models.",
 "gpc": {
  "brick_code": "10002658",
  "brick": "Household Boilers/Furnaces/Tank Water Heaters",
  "class": "Heating Equipment",
  "family": "Plumbing/Heating/Ventilation/Air Conditioning",
  "segment": "Plumbing/Heating/Ventilation/Air Conditioning"
 },
 "google_product_category": {
  "id": 621,
  "path": "Home & Garden > Household Appliances > Water Heaters"
 },
 "taxonomy": {
  "google": {
   "id": 621,
   "path": "Home & Garden > Household Appliances > Water Heaters"
  },
  "gpc": {
   "brick_code": "10002658",
   "brick": "Household Boilers/Furnaces/Tank Water Heaters",
   "class": "Heating Equipment",
   "family": "Plumbing/Heating/Ventilation/Air Conditioning",
   "segment": "Plumbing/Heating/Ventilation/Air Conditioning"
  }
 },
 "fields": [
  {
   "key": "heater_type",
   "label": "Heater type",
   "type": "enum",
   "unit": null,
   "values": [
    "storage",
    "tankless",
    "solar"
   ],
   "why_it_matters": "Storage, on-demand, and solar models differ in installation, delivery, and operating costs."
  },
  {
   "key": "energy_source",
   "label": "Energy source",
   "type": "enum",
   "unit": null,
   "values": [
    "electricity",
    "gas",
    "solar",
    "oil",
    "other"
   ],
   "why_it_matters": "The available fuel or power connection affects compatibility and ongoing cost."
  },
  {
   "key": "storage_capacity_ml",
   "label": "Storage capacity",
   "type": "number",
   "unit": "ml",
   "values": null,
   "why_it_matters": "A larger tank supplies more stored hot water before recovery is needed."
  },
  {
   "key": "flow_rate_ml_per_min",
   "label": "Hot-water flow rate",
   "type": "number",
   "unit": "ml/min",
   "values": null,
   "why_it_matters": "For tankless heaters, flow rate indicates how much hot water can be delivered continuously."
  },
  {
   "key": "input_power_w",
   "label": "Rated input power",
   "type": "number",
   "unit": "W",
   "values": null,
   "why_it_matters": "Power input affects heating speed and whether the home's electrical or gas supply is sufficient."
  },
  {
   "key": "efficiency_rating",
   "label": "Efficiency rating",
   "type": "string",
   "unit": null,
   "values": null,
   "why_it_matters": "A higher rating can reduce energy use, though rating systems vary by market."
  },
  {
   "key": "warranty_years",
   "label": "Warranty",
   "type": "number",
   "unit": "years",
   "values": null,
   "why_it_matters": "A longer warranty can reduce the cost and risk of ownership."
  }
 ],
 "minimum_spec": {
  "description": "Choose a heater compatible with the home's energy supply and rated to meet its hot-water demand. For a typical single-shower use, a storage model around 15 L or a tankless model rated around 10 L/min is a practical starting point.",
  "rules": [
   {
    "key": "energy_source",
    "op": "in",
    "value": [
     "electricity",
     "gas",
     "solar"
    ]
   }
  ]
 },
 "premium_dimensions": [
  "storage_capacity_ml",
  "flow_rate_ml_per_min",
  "energy_source",
  "efficiency_rating",
  "input_power_w",
  "warranty_years"
 ],
 "baseline": {
  "item_id": 183323,
  "name": "Calentador de agua solar Baja presi\u00f3n",
  "unit_price": 50.426,
  "retailer": "homedepot-com"
 },
 "items": [
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   "id": 183323,
   "name": "Calentador de agua solar Baja presi\u00f3n",
   "brand": null,
   "gtin": null,
   "category": "water-heaters",
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    "value": 115.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 115000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "solar",
    "energy_source": "solar",
    "storage_capacity_ml": 115000,
    "flow_rate_ml_per_min": null,
    "input_power_w": null,
    "efficiency_rating": null,
    "warranty_years": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": true,
   "tier": "premium",
   "premium_note": "Solar heating and a 115 L tank provide stored hot water with reduced reliance on conventional energy.",
   "best": {
    "unit_price": 50.426,
    "price": 5799.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/era-calentador-de-agua-solar-10-tubos-115-l-para-3-servicios-de-baja-presion-st-10-100-135096"
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   "lowest_price": {
    "price": 5799.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/era-calentador-de-agua-solar-10-tubos-115-l-para-3-servicios-de-baja-presion-st-10-100-135096"
   },
   "size_missing": false,
   "unranked_reason": null,
   "offers": [
    {
     "retailer": "homedepot-com",
     "retailer_id": "135096",
     "gtin": null,
     "price": 5799.0,
     "currency": "USD",
     "price_usd": 5799.0,
     "unit_price": 50.426,
     "availability": "InStock",
     "in_stock": true,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": "115 L",
     "url": "https://www.homedepot.com.mx/p/era-calentador-de-agua-solar-10-tubos-115-l-para-3-servicios-de-baja-presion-st-10-100-135096",
     "observed_at": "2026-10-09T12:21:07-04:00",
     "age_minutes_at_build": 18727
    }
   ],
   "url": "/items/183323.json",
   "html": "/items/183323.html",
   "rank": 1
  },
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   "id": 183321,
   "name": "Calentador de agua solar Primo",
   "brand": null,
   "gtin": null,
   "category": "water-heaters",
   "size": {
    "value": 150.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 150000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "solar",
    "energy_source": "solar",
    "storage_capacity_ml": 150000,
    "flow_rate_ml_per_min": null,
    "input_power_w": null,
    "efficiency_rating": null,
    "warranty_years": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": true,
   "tier": "premium",
   "premium_note": "Solar heating, a 150 L tank, and a 10-tube collector provide stored hot water.",
   "best": {
    "unit_price": 60.26,
    "price": 9039.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/iusa-calentador-de-agua-solar-primo-10-tubos-150-l-para-4-personas-616880-147248"
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   "lowest_price": {
    "price": 9039.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/iusa-calentador-de-agua-solar-primo-10-tubos-150-l-para-4-personas-616880-147248"
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   "size_missing": false,
   "unranked_reason": null,
   "offers": [
    {
     "retailer": "homedepot-com",
     "retailer_id": "147248",
     "gtin": null,
     "price": 9039.0,
     "currency": "USD",
     "price_usd": 9039.0,
     "unit_price": 60.26,
     "availability": "InStock",
     "in_stock": true,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": "150 L",
     "url": "https://www.homedepot.com.mx/p/iusa-calentador-de-agua-solar-primo-10-tubos-150-l-para-4-personas-616880-147248",
     "observed_at": "2026-10-09T12:15:56-04:00",
     "age_minutes_at_build": 18732
    }
   ],
   "url": "/items/183321.json",
   "html": "/items/183321.html",
   "rank": 2,
   "premium": {
    "pct_over_baseline": 19.5,
    "spec_diffs": {
     "storage_capacity_ml": [
      115000,
      150000
     ]
    },
    "note": "Solar heating, a 150 L tank, and a 10-tube collector provide stored hot water."
   }
  },
  {
   "id": 183317,
   "name": "Calentador de agua solar plano",
   "brand": null,
   "gtin": null,
   "category": "water-heaters",
   "size": {
    "value": 150.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 150000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "solar",
    "energy_source": "solar",
    "storage_capacity_ml": 150000,
    "flow_rate_ml_per_min": null,
    "input_power_w": null,
    "efficiency_rating": null,
    "warranty_years": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": true,
   "tier": "premium",
   "premium_note": "Solar heating and a 150 L tank provide stored hot water with reduced reliance on conventional energy.",
   "best": {
    "unit_price": 107.66,
    "price": 16149.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/iusa-calentador-de-agua-solar-plano-150-l-para-4-servicios-213075-800336"
   },
   "lowest_price": {
    "price": 16149.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/iusa-calentador-de-agua-solar-plano-150-l-para-4-servicios-213075-800336"
   },
   "size_missing": false,
   "unranked_reason": null,
   "offers": [
    {
     "retailer": "homedepot-com",
     "retailer_id": "800336",
     "gtin": null,
     "price": 16149.0,
     "currency": "USD",
     "price_usd": 16149.0,
     "unit_price": 107.66,
     "availability": "OutOfStock",
     "in_stock": false,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": "150 L",
     "url": "https://www.homedepot.com.mx/p/iusa-calentador-de-agua-solar-plano-150-l-para-4-servicios-213075-800336",
     "observed_at": "2026-10-09T12:09:33-04:00",
     "age_minutes_at_build": 18739
    }
   ],
   "url": "/items/183317.json",
   "html": "/items/183317.html",
   "rank": 3,
   "premium": {
    "pct_over_baseline": 113.5,
    "spec_diffs": {
     "storage_capacity_ml": [
      115000,
      150000
     ]
    },
    "note": "Solar heating and a 150 L tank provide stored hot water with reduced reliance on conventional energy."
   }
  },
  {
   "id": 220767,
   "name": "RHEEM CALENTADOR DE AGUA EL\u00c9CTRICO DE DEP\u00d3SITO 35 L 110V PARA 1 SERVICIO",
   "brand": "RHEEM",
   "gtin": null,
   "category": "water-heaters",
   "size": {
    "value": 35.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 35000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {},
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": null,
   "tier": null,
   "premium_note": null,
   "best": {
    "unit_price": 154.25714,
    "price": 5399.0,
    "retailer": "homedepot-com",
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   },
   "lowest_price": {
    "price": 5399.0,
    "retailer": "homedepot-com",
    "url": "https://www.homedepot.com.mx/p/rheem-calentador-de-agua-electrico-de-deposito-35-l-110v-para-1-servicio-rme-chn35l-124695"
   },
   "size_missing": false,
   "unranked_reason": null,
   "offers": [
    {
     "retailer": "homedepot-com",
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     "price": 5399.0,
     "currency": "USD",
     "price_usd": 5399.0,
     "unit_price": 154.25714,
     "availability": "InStock",
     "in_stock": true,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": "35 L",
     "url": "https://www.homedepot.com.mx/p/rheem-calentador-de-agua-electrico-de-deposito-35-l-110v-para-1-servicio-rme-chn35l-124695",
     "observed_at": "2026-10-10T04:22:44-04:00",
     "age_minutes_at_build": 17765
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   ],
   "url": "/items/220767.json",
   "html": "/items/220767.html",
   "rank": 4,
   "premium": {
    "pct_over_baseline": 205.9,
    "spec_diffs": {},
    "note": null
   }
  },
  {
   "id": 183319,
   "name": "Usha Aquagenie Ivory Wine",
   "brand": "Usha",
   "gtin": null,
   "category": "water-heaters",
   "size": {
    "value": 25.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 25000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "storage",
    "energy_source": "electricity",
    "storage_capacity_ml": 25000,
    "flow_rate_ml_per_min": null,
    "input_power_w": null,
    "efficiency_rating": null,
    "warranty_years": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": true,
   "tier": "mid",
   "premium_note": "The 25 L tank offers more stored hot water than a compact model.",
   "best": {
    "unit_price": 467.6,
    "price": 11690.0,
    "retailer": "bajajfinserv",
    "url": "https://www.bajajfinserv.in/bmall/usha-25-l-storage-water-geyser-ivory-wine-swh-aquagenie-25l-ivory-wine-iw/p/29185"
   },
   "lowest_price": {
    "price": 11690.0,
    "retailer": "bajajfinserv",
    "url": "https://www.bajajfinserv.in/bmall/usha-25-l-storage-water-geyser-ivory-wine-swh-aquagenie-25l-ivory-wine-iw/p/29185"
   },
   "size_missing": false,
   "unranked_reason": null,
   "offers": [
    {
     "retailer": "bajajfinserv",
     "retailer_id": "Usha25LStorageWaterGeyserIvoryWineSWHAQUAGENIE25LIVORYWINEIW",
     "gtin": null,
     "price": 11690.0,
     "currency": "USD",
     "price_usd": 11690.0,
     "unit_price": 467.6,
     "availability": null,
     "in_stock": null,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": "25 L",
     "url": "https://www.bajajfinserv.in/bmall/usha-25-l-storage-water-geyser-ivory-wine-swh-aquagenie-25l-ivory-wine-iw/p/29185",
     "observed_at": "2026-10-09T12:13:34-04:00",
     "age_minutes_at_build": 18735
    }
   ],
   "url": "/items/183319.json",
   "html": "/items/183319.html",
   "rank": 5,
   "premium": {
    "pct_over_baseline": 827.3,
    "spec_diffs": {
     "storage_capacity_ml": [
      115000,
      25000
     ],
     "energy_source": [
      "solar",
      "electricity"
     ]
    },
    "note": "The 25 L tank offers more stored hot water than a compact model."
   }
  },
  {
   "id": 183325,
   "name": "Symphony Sauna White",
   "brand": "Symphony",
   "gtin": null,
   "category": "water-heaters",
   "size": {
    "value": 25.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 25000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "storage",
    "energy_source": "electricity",
    "storage_capacity_ml": 25000,
    "flow_rate_ml_per_min": null,
    "input_power_w": null,
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    "warranty_years": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": true,
   "tier": "premium",
   "premium_note": "The 5-star rating indicates a focus on energy efficiency.",
   "best": {
    "unit_price": 759.6,
    "price": 18990.0,
    "retailer": "bajajfinserv",
    "url": "https://www.bajajfinserv.in/bmall/symphony-sauna-25l-5-star-vertical-storage-water-heater-white/p/29185"
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   "lowest_price": {
    "price": 18990.0,
    "retailer": "bajajfinserv",
    "url": "https://www.bajajfinserv.in/bmall/symphony-sauna-25l-5-star-vertical-storage-water-heater-white/p/29185"
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   "size_missing": false,
   "unranked_reason": null,
   "offers": [
    {
     "retailer": "bajajfinserv",
     "retailer_id": "SYMPHONYSAUNA25L5STARVERTICALSTORAGEWATERHEATERWHITE",
     "gtin": null,
     "price": 18990.0,
     "currency": "USD",
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     "unit_price": 759.6,
     "availability": null,
     "in_stock": null,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": "25L",
     "url": "https://www.bajajfinserv.in/bmall/symphony-sauna-25l-5-star-vertical-storage-water-heater-white/p/29185",
     "observed_at": "2026-10-09T12:28:42-04:00",
     "age_minutes_at_build": 18719
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   ],
   "url": "/items/183325.json",
   "html": "/items/183325.html",
   "rank": 6,
   "premium": {
    "pct_over_baseline": 1406.4,
    "spec_diffs": {
     "storage_capacity_ml": [
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      25000
     ],
     "energy_source": [
      "solar",
      "electricity"
     ],
     "efficiency_rating": [
      null,
      "5 Star"
     ]
    },
    "note": "The 5-star rating indicates a focus on energy efficiency."
   }
  },
  {
   "id": 183322,
   "name": "Usha Aquagenie Tangerine and White",
   "brand": "Usha",
   "gtin": null,
   "category": "water-heaters",
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    "value": 10.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 10000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "storage",
    "energy_source": "electricity",
    "storage_capacity_ml": 10000,
    "flow_rate_ml_per_min": null,
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    "efficiency_rating": null,
    "warranty_years": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": true,
   "tier": "basic",
   "premium_note": null,
   "best": {
    "unit_price": 820.0,
    "price": 8200.0,
    "retailer": "bajajfinserv",
    "url": "https://www.bajajfinserv.in/bmall/usha-10-l-storage-water-geyser-tangerine-and-white-swh-aquagenie-10l-tangarine-wo-solid/p/29185"
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   "lowest_price": {
    "price": 8200.0,
    "retailer": "bajajfinserv",
    "url": "https://www.bajajfinserv.in/bmall/usha-10-l-storage-water-geyser-tangerine-and-white-swh-aquagenie-10l-tangarine-wo-solid/p/29185"
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   "size_missing": false,
   "unranked_reason": null,
   "offers": [
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     "retailer": "bajajfinserv",
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     "price": 8200.0,
     "currency": "USD",
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     "unit_price": 820.0,
     "availability": null,
     "in_stock": null,
     "seller": null,
     "first_party": null,
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     "size_text": "10 L",
     "url": "https://www.bajajfinserv.in/bmall/usha-10-l-storage-water-geyser-tangerine-and-white-swh-aquagenie-10l-tangarine-wo-solid/p/29185",
     "observed_at": "2026-10-09T12:17:10-04:00",
     "age_minutes_at_build": 18731
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   ],
   "url": "/items/183322.json",
   "html": "/items/183322.html",
   "rank": 7,
   "premium": {
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     "storage_capacity_ml": [
      115000,
      10000
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     "energy_source": [
      "solar",
      "electricity"
     ]
    },
    "note": null
   }
  },
  {
   "id": 183318,
   "name": "Symphony Sauna White",
   "brand": "Symphony",
   "gtin": null,
   "category": "water-heaters",
   "size": {
    "value": 15.0,
    "unit": "L"
   },
   "size_as_extracted": {
    "value": 15000.0,
    "unit": "ml"
   },
   "unit_price_unit": "L",
   "specs": {
    "heater_type": "storage",
    "energy_source": "electricity",
    "storage_capacity_ml": 15000,
    "flow_rate_ml_per_min": null,
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    "efficiency_rating": "5 Star",
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