Best On Demand Water Heater

In this article, we’ve put together a collection of the best on demand water heater that are currently trending on the market. We used AI and big data to analyze dozens of reviews and ratings on different on demand water heater. Based on certain criteria, here we are presenting the top 10 on demand water heater that you can consider buying for your needs. To make your choice easier, we constantly update this collection of on demand water heater with new and trading models. When you make any purchase through our link, we may earn some commissions.

10 Best On Demand Water Heater

Based on overall quality, performance, features, price, and customer reviews, the followings are the top 10 best selling on demand water heater:

1
Product Highlights:
  • 【SUPERB MATERIALS】- Power: 24 KW; Hot Water Output: 12 L/min(3.2 GPM); Gas Supply: LPG(Liquid Petroleum Gas); Water Temperature: 50 °F -140 °F; This tankless water heater propane is crafted with stainless steel case and inner copper devices, making it anti-rust, high-temperature resistant, no water leakage, and durable. Come with a portable shower head kit.
  • 【6-IN-1 MULTI PROTECTIONS】- Our propane water heater is upgraded with six protection ways to ensure your security on the shower, such as Over 75℃(167 °F) protection, low water flow protection, anti-frozen protection, over water pressure protection, no flame protection, 20min timer, etc.
  • 【EFFORTLESS CONTROL】- You can easily adjust the water temperature by rotating the gas & water knobs on the panel. Switch the summer/winter mode to change the fire row amount, and save 40% gas in your bill. The combustion device will reach ≥80.8% thermal efficiency to save 11.5% energy. Start at a 0.015 MPA low water pressure; normal working pressure is 0.02 MPA-0.8 MPA.
  • 【WALL-MOUNT & DETAILS】- This gas water heater is light-weight & portable to be installed on the wall, tree, or outside the RV for space-saving. Well-selected devices are included like copper standard G1/2" hose connectors, filtration mesh, gas emission tube, and copper water tank. Ignite the heater with 2 "D"cell batteries, and no pilot light is needed.
  • 【DIVERSIBLE USE SCENARIOS】- CE test passed, fast to heat, this propane hot water heater is perfect for showering, pet washing, outdoor cleaning, camping and trip road, etc. Provide you with constant hot water, especially in winter or cold places. Instant, endless hot water, enjoy a comfortable showering at any time & any location.
2
Product Highlights:
  • 【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of 116℉or higher temp shortly, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. Time to get rid of those "lukewarm" toys.
  • 【SMART SELF ADJUSTMENT】The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.
  • 【CONVENIENT USE】The tankless water heater comes with digital display & touch control panel so temp setting is easy job. Now turn on the tap and let the smart unit do the rest, you needn’t go through hard lesson about temp setting by a mixer tap without any hint. This Black model does not comes with Remote control, useful for installation under sink.
  • 【SAFE and DURABLE】Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come.
  • 【POINT of USE】The sleek tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid energy waste. It can be mounted horizontally, vertically, obliquely, ideal for kitchen, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 5.5kW@240V; dimensions 11" x 7.5" x 2.35"; pipes fittings :1/2" NPT.
Sale3
Product Highlights:
  • ◎ HOTAITAI UMC certified 6L outdoor portable tankless water heater can supply instant, endless, on-demand hot water. It has compact size and 11lb body for easy carrying. Multiple safety protections can ensure the family safety. The best solution for outdoor hot water, perfect for camping, RV life or anywhere you need hot water.
  • ◎ ON DEMAND HOT WATER, ENJOY HOT WATER.The unit can supply instant, endless hot water easily wherever you are. No need to preheat, no need to wait. As soon as you turn on the switch on the shower rose or tap, the water will flow with your desired temperature. Fully adjustable heat and water flow.
  • ◎ LIGHTWEIGHT PORTABLE BODY. Body size: 17.3”*11.8”*5.1”, net weight: only 11 lb, with stainless steel handle, for easily carry. Bringing a amazing hot shower for you when you are camping, to the beach, washing your pets with this tankless water heater in outdoor. Hanging it into a hook or using the mounting bracket on the top/back of the gas water heater. Install it in a few minutes.
  • ◎ MULTIPLE PROTECTIONS. Automatically shuts off gas supply when flame goes out accidentally and ignition is unsuccessful. 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. Automatically shuts off gas supply if the unit doesn’t hang vertically to keep safe and protect the unit.
  • ◎ SAVING ENERGY&MONEY. No need to preheat, no need to wait. The unit can supply on-demand hot water. It can save up to 15% energy.
4
Product Highlights:
  • NOTE: Choose Only for 110~120V, Water flow and inlet water temperature will affect the heating performance as it's only 3.5kW. 2 years warrant for free replacement and refund, contact us for any problem before your return. TANKLESS electric water heater - 0.5GPM at temp rise 45°F for single sink washing use of small water flow use, ideal for summer or warm weather.
  • HARD WIRED ENDLESS HOT WATER - No need to preheat before using. As soon as you open the tap, the water flows with your desired temperature. High efficient, Energy Saving
  • COMPACT DESIGN - Super compact designed, even smaller than a shoe box. Wall-mounted design frees up floor space for more storage, easy to install into washbasin and other tight spaces!
  • EXCEPTIONALITY DURABLE - Instant hot water thanks to rapid and maintenance-free bare wire heating systems. High quality alloy bare heating element has good corrode resistance and acid-resisting, with longer lifespan, instantaneous heating efficiency up to 99%.
  • NOTES - Please verify that this model is the right size for your hot water needs and electrical requirements before purchase & installation. Dimensions:7.4" x 5.4" x 3.4" ; Weight: 3.0lbs; Pipes fittings :1/2" NPT, Electrical requirements: 3.5 kW, 120 volts, Nominal pressure: 150PSI. Nominal current:29A. Required breakers:1x 2-POLE 30A. Required wire: 1 x 12 AWG . ( Breakers and wire are NOT included )
Sale5
Product Highlights:
  • 【Electric Tankless Water Heater】applied with powerful 13kW heating system, the tankless water heater electric ECO130W supplies sufficient instant and endless hot water of 110℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time, perfect companion for single shower, sink faucets,dishwasher or washing machine.
  • 【Self Modulation Instant Water Heater】the electric hot water heater ECO130W adjusts exact power input based on current flow rate and temp setting. For example, less power will be applied by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 99.8% saves considerable electric charge for you.
  • 【Convenient Use】the electric tankless water heater 13kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status, you needn’t go through hard lesson of temp setting by a mixer tap without direct information. Now turn on the faucet and let the smart hot water heater do the rest.
  • 【Safe and Durable Hot Water Heater】newly updated and applied with multiple protections, every piece electric tankless water heater from GREATBEAR goes through strict tests to ensure 100% safety. Inner water and electricity lines are designed to run separately so as to avoid leakage risk and scale build up. You can expect outstanding performance for years to come.
  • 【Point of Use Water Heater】 the sleek tankless water heater electric ECO130W is compact as a shoes box, making it possible to install anywhere point of use to avoid energy and water waste, ideal for single shower, kitchen faucet, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 13kW at 240V(only); dimensions 11" (W) x 15.75" (H) x 2.25" (D); plumbing connections :1/2" NPT.
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Product Highlights:
  • On-Demand Tankless Water Heater-Camplux advanced 5.28 GPM high efficiency flow control propane gas tankless water heater delivers 5.28 gallons per minute of on-demand endless hot water to suit medium- and smaller-sized homes. Automatically activates on water pressure between 7.0-150 PSI.
  • Constant & Sustainable Hot Water Solution - CSA certified balanced combustion design,features with over-high wind pressure safety protection,Ipx4 water resistant protection, over-loaded electric protection,fan failure protection, equipped with PCB start up self-test & real-time intelligent monitoring, timely warning of potential gas fire and hydro power to ensure your family's safety.
  • Affordable & Efficient Savings - PCB frequency conversion intelligent control, temperature intelligent adjustment, environmental protection and durability, truly outstanding energy saving. Man-machine dialogue, heating without waiting. This residential constant model saves time, money and energy while producing safe, endless hot water for whole home at an affordable rate.
  • High Thermal Efficiency & High-Rise Wind Resistance-Phosphorus deoxidized copper heat exchanger with high temperature and corrosion resistance technology for full combustion and high thermal efficiency up to 92% . It can resist grade 8 wind speed and 240Pa high anti-wind pressure. Additionally, a wind pressure sensor is added to perceive the external wind force in real time and automatically adjust the fan, flame and maintain stable combustion.
  • Considerate Customer Service -Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.
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Product Highlights:
  • Compact Design,Saving Energy-The compact size - 12.8"(L)*5.91"(W)*20.28"(H) tankless water heater saves more space than traditional tanks.Trendy and modern design with fahrenheit digital temperature display.Eco and Full gas switch for energy saving and get ideal hot water temperature.
  • On-Demand Tankless Water Heater-Camplux high efficiency 2.64 GPM propane gas tankless water heater delivers 2.64 gallons per minute of on-demand endless hot water ensures instant hot water for any small homes, cabins or apartments.
  • [More Safety] Flame-out protection, anti-freezing protection(manual drainage needed),over-heating protection, air flow pressure switch protection to ensure the safety. Safe electronic ignition system, plugs into standard 120V electrical outlet with UL-listed cord.
  • Convenient, Easy Installation -Uses standard 1/2" NPT water fittings and comes with 2 inch horizontal venting pipe allowing for convenient and quick installation and ensures efficient power ventilation .
  • Considerate Customer Service- Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.
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Product Highlights:
  • 🚿【TIPS】Please notice that the 18KW tankless water heater requires 2 x 40 AMP breakers and 2 x 8 AWG wire, the Min. Water Flow is 0.4GPM/1.5L/min. The 24KW tankless water heater requires 3 x 40 AMP breakers and 3 x 8 AWG wire, and the Min. Water Flow is 0.66GPM/2.5L/min.
  • 🚿【Save Money Save Cost】No need to preheat before using instant tankless water heater. After using our Rinkmo high efficient water heater, you will find your water Heating Costs Reduce Up to 60%, due to our heater is 99.8% Energy Efficient, you can get hot water within 3s; Create heat without direct contact with metals,No mineral buildup so you don't need to maintenance or fix it and replace the heater coils, No expensive maintenanc cost in the future.
  • 🚿【10-fold Security Technology Systems More Safe】: This is a Safe water heater, design for whole house using especially those with babies at home. Inner water and electricity lines are designed to run separately so as to avoid rusting or mineral buildup issue that do great harm to water quality and your safe. So you can get steady stream of clean and fresh hot water for daily life.
  • 🚿【Stable Water Temp for Whole House】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
  • 🚿【Compact Size Save Space】Rinkmo water heater only like a small suitcase, save your space and giving more to your living area. Easy to install and operation, set temp by turning the button, press the button to switch between Fahrenheit/ Celsius.
Sale9
Product Highlights:
  • [Instant Unlimited Hot Water] - REQUIRE 2 SET x Double-pole 30AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Flow Rate 2.15GPM @ 35°F Rise. Press button to start the mahcine
  • [Save Money and Space] - Intelligent self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.
  • [Smart Operation] - Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1° increment from 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
  • [Easy Installation & Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
  • NOTE - Make sure this water heater is the correct size for your hot water need: 11kW at 240V draw max 46amp; Required breaker 2 x Double-POLE 30AMP; Wire gauge 2 x 12AWG; Unit size 14.75" x 11.75" x 3.13"; Water connection 1/2" NPT. 2-year limite warranty and 24/7 customer support services.
10
Product Highlights:
  • 【INSTANT & SUFFICIENT HOT WATER】 Applied with 9kW heating system, the electric water heater ECO90 supplies instant, consistent and endless hot water of 116℉or higher temp shortly, no waiting for preheating nor temp fluctuations in use, perfect companion for sink and faucet.
  • 【SMART SELF Modulation】The hot water heater ECO90 adjusts power input according to flow rate and temp setting in real time, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 99.8% saves considerable electric charge.
  • 【UPGRADED HEATING ELEMENT】The ECO90 hot water heater is applied with micro-computer control and patent heating technology. Water pipe is completely separated from electricity by cast aluminum module, which also guaranttes no"cold water sandwich" and avoids any corrosion inside pipes so as to extend service life.
  • 【SAFE AND DURABLE】Applied with multiple protection devices, every unit goes through strict tests to ensure 100% safety. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come.
  • 【CONVENIENT USE】The ECO90 tankless water heater comes with digital display & touch control panel so temp setting is easy job. It's space saving, measuring: 15.8″ H x 11.1″ W x 3.1″ D. Plus it has a stylish, modern design that blends in any location. Please verify it is the right size for you: 9kW@240V (not 110V); pipes fittings : 1/2" NPT.

Last update on 2021-06-20 at 21:17 / Affiliate links / Images from Amazon Product Advertising API

So, these are the best on demand water heater available on the market. We strongly recommend checking out the features, specifications, and real customer reviews before choosing any on demand water heater. To help you make your choice easier, we’ve prepared the following buying guide:

How to Choose the Right On Demand Water Heater?

Since there are dozens of brands offering various types of on demand water heater on the market, it becomes very difficult for both new and experienced buyers to pick the right one. In order to get the perfect on demand water heater for the money, you need to consider the following factors:

Quality & Performance

Your top priority when shopping for on demand water heater should be quality and performance. You should find out what materials are used in making the on demand water heater. Try to make sure that the model you are choosing is of top-notch quality.

Brand Recognition

As we mentioned earlier, there are dozens of brands offering various types of on demand water heater. Top-tier brands are reliable and offer high-performing on demand water heater. So, you need to consider choosing the perfect on demand water heater from a reputed brand.

Features & Specifications

We already mentioned some of the key features and specifications of top-quality on demand water heater. You should check out the specifications and features of each of these on demand water heater before making your decision.

Rating & Customer Reviews

Finally, take a look at the overall customer rating and real customer reviews of each of these on demand water heater. This will help you make the right decision.

Price

Price is another important factor that you need to consider when buying on demand water heater. Though it always depends on your budget, you shouldn’t compromise any essential features for the price. In order to buy the perfect on demand water heater, you should consider all of the factors mentioned above.

Final Words

We strongly believe that you will be able to find the best on demand water heater from the above list. However, we recommend that you read the specifications and features of each of these on demand water heater before deciding the right one for your needs.

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