Best Tankless Water Heater For Hard Water

Rinnai RE140iN Non-Condensing Natural Gas Tankless Water Heater, Up to 5.3 GPM, Indoor Installation, 140,000 BTU

  • Smart Design: Improved design of tankless hot water heater only heats when necessary to conserve energy.
  • Speeds installation and enhances serviceability with a cleaner internal layout.
  • LED screen provides service reminders and error codes.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This non-condensing indoor tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 5.3 GPM (5 fixtures at once).
  • Smart, Durable Design: Water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
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Mini Electric Tankless Water Heater - 110V Small Instant Hot Water Heater,Under Sink Plug in Water Heaters on Demand with LCD Digital Display for Kitchen Sink Faucet(Gold)

  • ✅【110v Tankless Water Heater】:The home water heater is Install below the sink, small size saving you space under the sink. Size: 7.87x 5.12 x 2.56". Mini Tankless Water Heater is the best gift for person who has a new sink!.
  • ✅【Heating Water in 3s】:When the water passes through the unit, 3000W output tankless electric water heater will heat in 3 seconds, saving your water bill. You can control the temperature according to the water flow.Water Temperature Range: 35-50℃..
  • ✅【Wide Applications】: The instant water heater 110v tanklesss suitable for universal water pipe: 1/2 inch diameter (inflow or outflow),110V.
  • US Plug. Install the small instant hot water heater under American kitchen island, kitchen and living room, enjoy hot water for washing dishes, food, clothes, faces and so on..
  • ✅【Safe Automatic Power-Off】:The mini tankless electric water heater 110v automatically shuts down when inactive, overheated, or leaking. And stop heating when there is no water flow, saving your electricity bills..
  • ✅【Easy to Install】:Just install the small water heater on a shelf, wall or bracket under the bathroom or kitchen sink.
  • connect the water pipes up and down to provide hot water for your sink..
  • ✅【Note】:The small tankless water heater....
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Rinnai RSC199iP Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Propane Heater, Up to 11 GPM, Indoor Installation, 199,000 BTU

  • Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 11 GPM (7 fixtures at once).
  • Smart, Durable Design: With multiple venting options, water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
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Rinnai RSC199eP Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Propane Heater, Up to 11 GPM, Outdoor Installation, 199,000 BTU

  • Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This outdoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 11 GPM (7 fixtures at once).
  • Smart, Durable Design: With no venting required, water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
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Rinnai RSC160iP Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Propane Heater, Up to 9 GPM, Indoor Installation, 160,000 BTU

  • Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 9 GPM (6 fixtures at once)..
  • Smart, Durable Design: With multiple venting options, water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
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Rinnai RSC160eP Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Propane Heater, Up to 9 GPM, Outdoor Installation, 160,000 BTU

  • Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This outdoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 9 GPM (6 fixtures at once).
  • Smart, Durable Design: With no venting required, water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
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Futurama Volume Four

  • TANKLESS WATER HEATER VALVE KIT: Watts LFTWH-FT-HCN service valve kit for tankless water heater valves simplify the installation, maintenance and....
  • SERVICE VALVE KIT FOR TANKLESS WATER HEATER: The tankless water heater service valve kit replaces up to 18 fittings and 16 connections used in typical....
  • MULTIPLE CONNECTION VALVE KIT: They are available in two valve sets or as a single valve with female threaded, union or quick-connect end options. The....
  • LEAD FREE VALVE KIT: The wetted surface of our Lead Free products contacted by consumable water contain less than one quarter of one percent (0.25....
  • WATER SERVICE VALVE KIT: Purge/drain ports allow regular cleaning to remove scale build-up. The kit includes LF4L - Lead free poppet type pressure....
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Rinnai RSC199iN Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Natural Gas Water Heater, Up to 11 GPM, Indoor Installation, 199,000 BTU

  • Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 11 GPM (7 fixtures at once).
  • Smart, Durable Design: With multiple venting options, water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
Check Stock

Rinnai RSC160iN Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Natural Gas Water Heater, Up to 9 GPM, Indoor Installation, 160,000 BTU

  • Smart-Circ Intelligent Recirculation: This tankless hot water heater features Smart-Circ technology that learns your water usage patterns, then schedules pump and recirucation accordinlgy for superior energy efficiency and convenience.
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: This indoor condensing tankless hot water heater from Rinnai is only the size of a small suitcase, but provides up to 9 GPM (6 fixtures at once).
  • Smart, Durable Design: With multiple venting options, water heater fits a wide array of spaces.
  • Includes 15-, 5-, and 1-year residential guarantee for heat exchanger, labor, and parts, respectively.
  • See Controlr module for WiFi control (not included).
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater.
  • We do not recommend installing a water heater without a technician.
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home.
  • Check our Ground Water Temperature Map to see if this heater is optimal for your region.
Check Stock