Best Tankless Gas Boiler

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.
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Rinnai RSC199eN Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Natural Gas Water 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 RSC160eN Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Natural Gas Water 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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Bosch ProTL 175CN (Greentherm C 950ES-NG) Tankless Water Heater, Natural Gas

  • Bosch Special Edition 175,000 BTU Condensing Tankless Water Heater.
  • Equivalent to the Bosch Greentherm C950ES-NG Natural Gas Tankless Water Heater.
  • Benchmark temperature stability achieved with an active bypass.
  • Can be vented with 3" or 4" PVC vertically or horizontally, including concentric options.
  • Inlet water filter featuring easy external access.
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Tankless Water Heater, 12L 3.17 GPM 23Kw Instant Heating Propane Gas Water Heater with Constant Temperature, Indoor (white)

  • 【Tankless Instant Hot Water Heater】No need to preheat before using the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature..
  • 【High Sensitive Touch Led Display】Comes with smart digital LED display high-definition large screen, freely adjustable the temperature between 30℃-65℃..
  • 【Multiple Security Protection】The propane gas water heater is upgraded with 12 protection methods to ensure your safety. Such as dry burning protection, over 65℃(149 °F) protection, leakage protection, etc..
  • 【Energy and Money Saving】The hot water heater adjusts power input based on flow rate and temp setting in real time. Summer/winter 2 modes to save up to 60% on your propane gas costs..
  • 【Quality Material】Made with brushed stainless steel material, the propane gas water heater has the function of high temperature resistance, corrosion resistance. Built-in oxygen-free copper water tank, long service time..
  • If you have any questions about the product, please contact us by email. We have a professional technical support team.There are manuals attached to the chassis of the product, and paper manuals are also configured. Please read carefully..
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Tankless Water Heater, Camplux 5.28 GPM Instant Water Heater Indoor, Propane Hot Water Heater for Whole House, White

  • Energy & Space Efficient - The propane gas water heater has space-saving design conserves energy as it heats only when necessary..
  • Optimal Water Pressure - The on demand water heater with high-performance up to 5.28 GPM hot water flow rate for a powerful, constant stream for whole home..
  • Convenient, Easy Installation - The 120 volt tankless water heater is perfect with Camplux customized vent pipe CP-70 together for better ventilation performance for indoor installation..
  • Thermal Efficiency Up to 89.98% - The gas hot water heater comes with CSA certified balanced combustion design, v-type stainless steel burner,high heating efficiency up to 89.98 %..
  • High-Rise Wind Resistance - The instant hot water heater with 90°wind isolation design, this tankless instant water heater can anti backflow wind in high floors..
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forimo Tankless Water Heater 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins

  • ... combustion technology to decrease gas consumption and burning noise.Maximum power output 68,000btu/hour, you will get instant endless hot water easily wherever you are.Compact and lightweight structure with 11.5% energy saving technology,so you can get more hot water for less money..
  • 【CSA Approved Safety 】-Tankless Water Heater with CSA Approved Regulator, safe as per Canadian and US Standard.with more safety protection such as flame failure device, anti-freezing protection, over heating protection to ensure the family safety,Automatically decrease water pressure between 3.6-110PSI..
  • 【Lightweight Portable Design】-Compact size and lightweight make the water heater easy to carry and allow you to enjoy an amazing hot shower after a long day of camping, in your RV, or for giving your pet a bath,Dimension: 13.4x5.9x21.65 inches, Shower head with one button:just press the shower head button once to stop the water flow and prevent water waste..
  • 【Easy to Install】-Equipped with BSP pipe fittings and all necessary accesories , There are three interface ports under propane water heater. The left one is the Air inlet. ​The middle one is the shower port,and The right one is the water inlet, which is very convenient for customers to install.The ta....
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Tankless Water Heater, GASLAND Outdoors BE158S 1.58GPM 6L Portable Gas Water Heater, Energy-efficient Propane Water Heater for RV Camping Cabin Barn Boat, Overheating Protection, Easy Installation

  • ...er temperature protection over 167 °F. Shut off gas supply automatically under unexpectable flameout..
  • ????【Lightweight Portable Design】 Compact size and lightweight design for easily carry. It can bring a amazing hot shower for you when you are camping, to the beach, etc. Also you can wash your pets with this tankless water heater in outdoor. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you a few minutes to install it. Or you can install it according to the instructions..
  • ????【On Demand Hot Water】 Maximum power output 41,000BTU/Hr, get instant endless hot water easily wherever you are. No need to preheat before using tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature. Low water pressure start up, just need 2.5 PSI of water pressure. 1.58 gallons per minute of on-demand hot water. Fully adjustable heat and water flow..
  • ????【Energy Saving】 Compact and light weight structure with 11.5% energy saving technology. The propane water heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise. You will save more when you use our tankless water heater..
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MAREY GA10FNG 2.64 GPM, 68,240 BTU's NG Gas Flow activated Gas Tankless Water Heater , White

  • ECO-FRIENDLY WATER HEATER: Save energy using less gas during the warm months with the Marey Tankless Natural Gas Water Heater.
  • BATTERY POWERED: Tankless water heater starts with pulse ignition powered by (2) D batteries (not included).
  • AUTOMATIC SHUT-OFF: Multiple safety sensors, such as auto cut-off, automatic ignition, anti-dry combustion, over-pressure, overheating, flameout protection, and twin solenoid valves.
  • TEMPERATURE CONTROL: Ideal for indoor use in apartments, cabins, and tiny homes.
  • Control your temperature year-round with the convenient summer/winter switch.
  • Not recommended for elevations above 2,000 feet.
  • FEATURES: 2.64-GPM heater is activated by water flow rather than water pressure.
  • Minimum temperature: 6.80 to 64.40 degrees Fahrenheit.
  • Water connection location/size: Bottom/0.5-inch NPT.
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Marey GA5FNG 1.32 GPM 34,120 BTU's NG Gas Flow activated GasTankless Water Heater

  • ECO-FRIENDLY WATER HEATER: Save energy using less gas during the warm months with the Marey Tankless Natural Gas Water Heater.
  • BATTERY POWERED: Tankless water heater starts with pulse ignition powered by (2) D batteries (not included).
  • AUTOMATIC SHUT-OFF: Multiple safety sensors, such as auto cut-off, automatic ignition, anti-dry combustion, over-pressure, overheating, flameout protection, and twin solenoid valves.
  • TEMPERATURE CONTROL: Ideal for indoor use in apartments, cabins, and tiny homes.
  • Control your temperature year-round with the convenient summer/winter switch.
  • Not recommended for elevations above 2,000 feet.
  • FEATURES: 1.32-GPM heater is activated by water flow rather than water pressure.
  • Minimum temperature: 6.80 to 66 degrees Fahrenheit.
  • Water connection location/size: Bottom/0.5-inch NPT.
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