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Top 10 Best on demand hot water heater Reviews

Top 10 Rated on demand hot water heater in 2023 Comparison Table

SaleBestseller No. 1
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
  • Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11.5 x 8 x 3.75 inches
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
  • EcoSmart ECO 11 Sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
SaleBestseller No. 2
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
  • Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches 
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
  • EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
  • Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
SaleBestseller No. 3
EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China
  • Amperage (amps): 75. Activation flow: 0. 3 GPM. Flow Rate @ 35 F Rise (gallons/min): 3. 51 gal (US)/min
  • The product works and is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire
Bestseller No. 4
Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected], 6 x 11 x 3 Inch
  • Can provide hot water for one sink at 0.5 GPM in warmer climates
  • Requires 1 x 30 amp breaker and 10 AWG wire
  • For one sink at 0.5 GPM in colder climates the POU 6 is recommended
  • Amperage Draw 29 amp. kW - 3.5 kW
  • Connection Fittings 1/2" NPT
Bestseller No. 5
Eccotemp FVI12-LP Liquid Propane Gas Tankless Water Heaters, White
  • Whole home indoor, gas powered tankless water heater, rated at 3.6 GPM that activates only when in use, making it an energy saver.
  • For indoor installation with safe, efficient power ventilation and perfect for any small home, cabin or apartment.
  • Easy to read digital temperature display, on a compact and space-saving design with minimal noise output.
  • Safe electronic ignition system; plugs into standard 120v electrical outlet with UL-listed cord.
  • Uses standard 1/2" NPT water fittings and is equipped with easy to use manual water temperature controls.Minimum 0.65 GPM flow rate
Bestseller No. 6
Rinnai RL94iP Tankless Hot Water Heater, 9.8 GPM, Propane, Indoor Installation
  • Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE180iP model
  • Never Run Out of Hot Water with this Compact Propane Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)
  • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty 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
SaleBestseller No. 7
Eccotemp i12-LP Water Heater, 4 GPM, Black
  • Whole home indoor, gas powered tankless water heater, rated at 4 GPM that activates only on demand and no pilot light needed, reducing energy consumption
  • Sleek, modern design with black tempered glass front panel featuring an easy to use LED display controls
  • Features fully automatic temperature controls with an energy saving mode and child lock technology
  • Safe electronic ignition system; Plugs into standard 110v electrical outlet with UL-listed cord
  • Uses standard 1/2" NPT water fittings and comes with horizontal venting allowing for a convenient and quick installation
SaleBestseller No. 8
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
  • Lifetime warranty
  • Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
  • Never run out of hot water with an ECOSMART tankless water heater
  • Patented Self Modulating Technology and design.Activation flow 0.3 GPM
  • ECOSMART tankless water heaters are 99.8-percent energy efficient
Bestseller No. 9
Rinnai RL94IN Tankless Hot Water Heater, 9.8 GPM, Natural Gas, Indoor Installation
  • Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE180iN model
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)
  • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty 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
Bestseller No. 10
Marey ECO110 220V Self-Modulating 11 kW, Small, White
  • The 220V ECO 11kW unit is ideal for 1 simultaneous points of use in US Southern Regions where the incoming water temperature is above 70°F. In colder regions, it is suitable for a sink at 1. 3 GPM.
  • German-designed with high quality stainless steel water channel and heating chamber.
  • SMART Technology: Easy management and simple adjustments on a LCD Panel allows you to program the exact desired water temperature thereby optimizing electricity consumption.
  • Requires (1) 60 Amp breaker and must be installed by a professional plumber or electrician to ensure safety and quality.
  • Marey’s ECO line can maintain 98% efficiency level throughout their lifetime.
Are you looking for top 10 great on demand hot water heater for the money in 2023? After evaluating and analyzing in detail more than 43,123 customer satisfaction about top 10 best on demand hot water heater in 2023, we have come up with the top 10 rated products you may be interested in. We have ranked the best brands from Artificial Intelligent and Big Data, as you see below:

Our Best Choice: Tankless Water Heater, Gasland Outdoors Propane Water Heater 12L BS318 3.18GPM, Portable Hot Water Heater for Cabin & Barn, Camp Water Heater for RV, Overheating Protection, Easy to Install, White


Our rating:4.7 out of 5 stars (4.7 / 5)





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Product Description

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THE MOST PROFESSIONAL TANKLESS WATER HEATER MANUFACTURER

Gasland Outdoors BS318 3.18GPM 12L outdoor portable tankless water heater has compact size and lightweight design allowing for a convenient carrying. Flame failure device, anti-freezing protection, over heating protection can ensure the family safety. Maximum power output 82,000BTU/Hr, low water pressure start up, just need 3.8 PSI of water pressure. The best solution for outdoor hot water, perfect for camping, RV life or anywhere you need hot water.

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PROTECTION OF FAMILY SAFETY

Flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.8-110PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. High water temperature protection over 167 °F. Shut off gas supply automatically under unexpectable flameout.

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ON DEMAND HOT WATER, ENJOY BATH

Maximum power output 82,000BTU/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 3.8 PSI of water pressure. 3.18 gallons per minute of on-demand hot water. Fully adjustable heat and water flow.

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COMPACT, LIGHTWEIGHT 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.

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SAVING ENERGY&MONEY

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 a lot of money when you use our tankless water heater.

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WARM TIPS

√ 1、When install the water heater please do not over tighten the connectors and pipes to prevent it from bursting and leaking.

√ 2、The exhaust and top will get hot, please check around area for flammables, especially gasoline or other vapors which may ignite. Please make sure there are no foreign objects around the portable tankless water heater or have fallen into the top.

√ 3、A gas leak detection is needed before use and please do not use flame for leak detection. Soapy solution, gas detectors, etc. are recommended to detect leaks.

√ 4、Please use only liquid propane as fuel and use it in a well-ventilated place.

√ 5、Please make sure there is enough water pressure. If the water pressure is below 3.8 PSI, the water heater cannot be ignited.

√ 6、If the outside temperature is around or below freezing(0℃/32℉), please ensure to drain out the water after each use to avoid internal damage to the heat exchanger.

√ 7、This water heater is not suitable for high altitude areas over 3300 feet and strong wind conditions.

SUITABLE APPLICATIONS

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Outdoor Showers

Enjoying outdoor shower with endless hot water during camping trip.

On demand hot water

No need to preheat before using tankless water heater

Bathing Horses

Offering your horse with a relaxing shower in the afternoon.

Washing Dogs

Providing a comfortable sunbath for your pet dog.

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PACKING LIST

1 x BS318 portable gas hot water system.
1 x instruction manual in English.
1 x 5 feet CSA approval regulator & gas hose.
1 x garden hose fitting: 1/2″ BSP Female X 3/4″ GHT Male.
1 x garden hose fitting: 1/2″ BSP Female x 3/4″ GHT Female.
1 x gas inlet connector: 1/2″ BSP Female x 5/8″ NPT Inverted Flare Male.
1 x ON/OFF chrome shower head and pedestal, includes 5 feet shower hose.
1 x accessories package(fixing kits includes water tape, wood screws, washers).

EASY TO USE

1、Attach the 3/4″ GHT garden hose adapter to the fitting marked “water input” and the shower head to the “Water Outlet”.

2、Install gas supply line and regulator to the portable tankless water heater and attach gas regulator with hose to the LP cylinder.

3、Install two fresh “D” cell batteries with correct direction and turn on water supply.

4、Turn your water output device to its “off” position while the gas valve on the cylinder all the way open.

5、 Set the water knob(blue one) to its highest setting(left position) and the gas knob(red one) to its minimum setting(left position).

6、 Turn on your water output device to the “on” position and adjust to the desired water flow.

7、 Open the drain valve to ensure draining of water upon completion of use or storage and turn off your gas supply.

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KINDLY NOTE

Please make sure there is enough water pressure. If the water pressure is below 3.8 PSI, the water heater cannot be ignited.

When install the water heater please do not over tighten the connectors and pipes to prevent it from bursting and leaking.

🎁【Multiple Protection Functions】The Gasland propane water heater comes with flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.8-110PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. High water temperature protection over 167 °F. Shut off gas supply automatically under unexpectable flameout.
🎁【Portable Wall-Mounted Design】Portable design for carry on easily. 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 portable hot water heater in your garden. Hang it using the mounting bracket on the top/back of the propane water heater. It only takes you a few minutes to install it. Or you can install it according to the instructions.
🎁【On Demand Endless Hot Water】 Maximum power output 68,000btu/hour, get instant endless hot water easily wherever you are. No need to preheat before using RV camping water heater. As soon as you turn on the tap, the water flow with your desired temperature. Low water pressure 3.6 PSI start up. 3.18 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 heat exchanger and main burner of the propane shower water heater are desinged with advanced combustion technology to decrease gas consumption and burning noise. It will help you save more when use Gasland tankless water heater.
🎁【Excellent Customer Service】We have professional team to offer you excellent service. If you have any question, please feel free to contact us from Monday to Friday.

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