Instant Water Heater

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Are you looking for an instant water heater? Then you have come to the right place. This article will take about the best instant water heaters, so stick around and keep reading to find out.

AO Smith HSE-VAS-X-025 Storage 25-Litre Vertical Water Heater

With a capacity of 25 liters, the AO Smith instant water heater has a 5 star rating. AO Smith is one of the best brands in the industry, known for making amazing appliances, and with their latest water heater, they have managed to make a killer product. The inner tank is made with a blue diamond glass, and it will be able to hold your warm water for a long period of time without losing heat. It has a double layered protection and comes with a sleek design and an amazingly energy efficient technology.

Bajaj New Shakti GL 25-Litre Vertical Storage Heater

The Bajaj instant water heater is a high quality product that comes under two variants, one with a 10 liter capacity and the other with a 15 liter capacity. Its inner tank is coated with a glass line that is free from any corrosion while the plastic body of the water heater makes it a very lightweight appliance. It also comes with PUF insulation to ensure that the water remains hot for a sufficiently long period.

Crompton Amica ASWH-2015 15L Storage Water Heater

The Crompton instant water heater has a total storage capacity of 15 liters. It is a very safe appliance to operate and comes with a range of useful features that will make your life more convenient.

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Best Instant Water Heater Deals

DDAYBF Tankless Water Heater Electric 110V, 3000W Under Sink Instant On Demand Hot Water Heater, Portable Mini Water Heaters with Digital Display for Kitchen Bathroom RV (Mini White, M)

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$58.89 @ Amazon.com

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Key Features

  • ✅ ✅ 【Tankless Water Heater Electric】 DDAYBF 110V Mini Tankless Water Heater Electric delivers hot water in 3-5 seconds flat—no preheating, no waiting around for sink-side hot water! Reaches a max temperature of 55°C/131°F, providing endless comfortable hot water for washing dishes, hands, fruits, clothes, and more. Perfect for replacing bulky tank-style heaters that waste energy on constant heating
  • ✅ ✅ 【Multi-Layer Safety Protection 】 Built for peace of mind with IPX4 waterproof rating, leakage protection, dry-burn prevention, overheat protection, and auto-shutoff when idle . The LCD digital display lets you monitor operating status in real time, while intelligent detection ensures consistent performance and safety—meets North American electrical safety standards
  • ✅ ✅ 【Space-Saving & Versatile Design 】Compact wall-mounted design frees up valuable counter and storage space, making it ideal for kitchens, apartments, bathrooms, RVs, and camping trips . This point-of-use water heater is portable enough for on-the-go hot water needs, yet powerful enough to handle daily household tasks
  • ✅ ✅【 Easy Installation & Dual Temperature Modes 】 Comes with pre-drilled mounting holes, English instructions, and 1/2-inch NPT standard connections for quick DIY setup. Important: Requires 13AWG (2.5mm²) wiring and a 32AMP+ circuit breaker (critical for safe operation). Switch seamlessly between Celsius and Fahrenheit by holding the power button—perfect for US/Canadian users
  • ✅ ✅【 Energy Efficient & 24-Month Warranty 】Boasts 99% thermal efficiency (far higher than tank heaters) with adjustable power output that adapts to water flow and temperature settings . Reduces energy waste by using only what’s needed, cutting utility costs. Backed by a 2-year warranty and 24/7 support—package includes heater, 4 mounting screws, and user manual

Product Details

Brand:DDAYBF
Model:Tankless Water Heater Electric
Size:M
Color:Mini White
Dimensions:4.6 X 4.6 X 7.8 Inches

Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washin

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$59.68 @ Amazon.com

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Key Features

  • ✅ ✔ ELECTRIC TANKLESS WATER HEATER - This tankless electric water heater is made of high-quality ABS material, with LED display. With 3000W power, the mini water heater can raise the water by 82° F(0.3GPM) -131° F(0.5GPM) in seconds, providing tankless instant, continuous hot water without waiting for preheating, meeting daily hot water needs. The on demand water heater can set Fahrenheit or Celsius degrees by holding a power button for 6 seconds.
  • ✅ ✔ COMPACT AND EFFICIENT DESIGN - The electric water heater tankless adopts an ultra-thin and smooth appearance design, which is beautiful and elegant. The point of use water heater can meet your outlet temperature requirement. The Larger the water flow, the lower the outlet temperature; The smaller the water flow, the higher the outlet temperature. Not Suitable for Shower(Shower normally requires at least 1.8 GPM). Under sink water heater 110v plug in.
  • ✅ ✔ SAFETY INTELLIGENCE RELIABLE - This under sink hot water heater has multiple protection functions. Water and electricity isolation, IPX4 waterproof, leakage protection, dry boil protection, and automatic power off under overheating and inactivity. Prevent leakage and water pipe corrosion. The thermal efficiency of instant hot water heater is as high as 98%, allowing you to enjoy hot water at any time and save energy.
  • ✅ ✔ EASY TO INSTALL AND APPLICATION - Our instant hot water heater under sink compact design, it is very suitable for every corner of your home. This 110 volt water heater comes with premade fixing screw holes, an English manual, and 1/2 inch NPT standard interface. This small water heater is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. TIP: Install vertically to avoid malfunction of the heating elements (E2).
  • ✅ ✔ IMPORTANCE FOR INSTALLATION - ① The 110v water heater is vertical installation only, no horizontal installation is allowed, to avoid malfunction of the heating elements (E2). ② The electric tankless water heaters tighten the pipe connectors with Teflon tape to prevent a short circuit (E2). ③ This tankless hot water heater is recommended to be connected with wires with a cross-sectional area of ≥ 2.5 square millimeters, and connected to trip switches of over 32a for use.

Product Details

Brand:xwdzswgs
Model:Water Heater Electric
Color:White
Dimensions:4.32 X 4.32 X 7.86 inches

ECOTINYMACH Tankless Water Heater Electric 110V, 6000W Instant Water Heater Under Sink, Conversion Between Fahrenheit and Celsius, Remote Control

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$92.99 @ Amazon.com

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Key Features

  • ✅ Remote Control Convenience: Enjoy unparalleled convenience with the built-in remote control feature. Easily adjust settings from afar, making it perfect for busy households or commercial spaces where accessibility is key.
  • ✅ Dual Temperature Scales: Switch effortlessly between Fahrenheit and Celsius temperature scales to suit your preferences. This versatile feature allows for precise temperature control, ensuring optimal comfort and efficiency in any environment.
  • ✅ Compact and Space-Saving Design: Designed for modern living, the ECOTINYMACH 110V tankless water heater takes up minimal space while delivering maximum performance. Its sleek and compact design fits seamlessly into kitchens, bathrooms, or utility rooms without clutter.
  • ✅ Energy Efficiency and Cost Savings: Save on energy bills with this highly efficient electric tankless water heater. By heating water only when needed, it reduces energy waste and lowers your overall utility costs, making it an eco-friendly and economical choice.
  • ✅ Installation instructions: Wire requires 8mm ² (8AWG), circuit breaker＞ 60AMP, thread size: 1/2 "NPT, please contact a person with an electrical license to help you complete the wire connection.

Product Details

Brand:ECOTINYMACH
Model:XY-FB
Color:White
Dimensions:8.86 X 8.86 X 8.46 inches

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

Image of EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

$206.76 @ Amazon.com (Save 17%)

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Key Features

  • ✅ 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.Amperage Draw : 54 A.Special Features: ‎Energy Efficient
  • ✅ 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

Product Details

Brand:EcoSmart
Model:ECO 11
Size:12 x 8 x 4
Color:White
Dimensions:3.75 X 8 X 11.5 inches
Warranty:Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

Rheem 18kW 240V Tankless Electric Water Heater, Gray

Image of Rheem 18kW 240V Tankless Electric Water Heater, Gray

$448.15 @ Amazon.com

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Key Features

  • ✅ External digital thermostatic control with LED display (+/1 degree accuracy)
  • ✅ Most advanced self-modulation, adjust power to meet hot water demand
  • ✅ Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
  • ✅ Simple installation – bottom 3/4 inch NPT water connections
  • ✅ Threaded for easy replacement, simple installation, digital temperature display

Product Details

Brand:Rheem
Model:RTEX-18
Size:Small
Color:Gray
Dimensions:18.5 X 14.5 X 3.5 inches

110V Tankless Water Heater Electric, 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters Electric for Kitchen Washin Bathroom

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$52.85 @ Amazon.com

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Key Features

  • ✅ Tankless Electric Water Heater - This electric tankless water heater uses stainless steel and ABS materials, LED display. With 3000W power, the electric water heater tankless can raise the water by 82° F(0.3GPM) -131° F(0.5GPM) in seconds. The instant water heater can set Fahrenheit or Celsius degrees by holding the power button for 6 seconds. This 110 volt electric tankless hot water heater uses advanced technology, no need to preheat, eliminating the long waiting time for hot water!
  • ✅ Safety Intelligence Reliable - This instant hot water heater has multiple protection functions. IPX4 waterproof, water and electricity isolation, leakage protection, dry boil protection, and automatic power off under overheating and inactivity. On demand water heater with LCD digital display, intelligent detection of working status, and performance. The thermal efficiency of electric hot water heater is as high as 98%, allowing you to enjoy hot water at any time and save energy.
  • ✅ Efficient And Compact Design - This tankless hot water heater electric has a compact design, perfect for spaces such as kitchens, apartments, bathrooms, RVs, and camping. The on demand water heater electric adopts a wall-mounted design, freeing up valuable space for your home, enjoy hot water at any time. This instant electric water heater qualifies for ETL standard. You can expect the outstanding performance of this on demand electric water heater in the coming years.
  • ✅ Easy To Install And Application - This electric instant hot water heater comes with pre-fabricated set screw holes, English instructions, and 1/2 inch NPT standard connections. This small tankless water heater electric has a simple design and is quick and easy to install, saving time. This tankless water heater electric 110v is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. TIP: Not Suitable for showers (Shower normally requires at least 1.8 GPM).
  • ✅ Importance For Installation - ① The 110v point of use water heater for vertical installation only, no horizontal installation is allowed to avoid malfunction of the heating elements (E2). ② The electric tankless water heaters tighten the pipe connectors with Teflon tape to prevent a short circuit (E2). ③ This under sink water heater is recommended to be connected with wires with a cross-sectional area of ≥ 2.5 square millimeters, and connected to trip switches of over 32A for use.

Product Details

Brand:xwdzswgs
Model:Water Heater Electric
Color:White
Dimensions:4.32 X 4.32 X 7.86 Inches

New Upgrade 12kW Tankless Water Heater Electric, 240 Volt On Demand Instant Hot Water Heater, Up to 2.83 GPM for 2-3 Point of Use, with LED Digital Display, Real-Time Usage Monitoring (Black 240V)

Image of New Upgrade 12kW Tankless Water Heater Electric, 240 Volt On Demand Instant Hot Water Heater, Up to 2.83 GPM for 2-3 Point of Use, with LED Digital Display, Real-Time Usage Monitoring (Black 240V)

$179.86 @ Amazon.com

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Key Features

  • ✅ 【Instant Hot Water Supply】PeiXWming 240V electric tankless hot water heater can provide up to 2.83 GPM of unlimited hot water as needed, and can provide hot water for 2-3 usage points simultaneously. It can provide continuous hot water supply in just 3 seconds, eliminating long waiting times and the anxiety of running out of hot water in the tank.
  • ✅ 【Intelligent Frequency Conversion】The intelligent system of this electric tankless water heater 240v can automatically adjusts energy consumption based on the inlet water temperature and flow rate to ensure maximum efficiency, continuous stable temperature, and optimal power usage. Thanks to a built-in chip that can be adjusted more than 20,000 times per second, this tankless electric water heater can keep the water temperature within ± 1 ° F of your selected temperature, ensuring a consistently comfortable shower experience for you.
  • ✅ 【More Energy Saving】This on-demand electric water heater utilizes water-electricity separation to minimize scale, corrosion, and mineral accumulation, achieving better performance and lower maintenance costs. Compared to traditional tank type water heaters, it is more energy-efficient, space saving, and can save up to 60% of electricity costs, making it very suitable for household use.
  • ✅ 【Clear Large LED Display Screen】Our 12KW electric tankless water heater is equipped with a clear LED display screen and touch sensitive buttons. You can not only monitor the working status of the water heater in real time through the display screen, but also easily set its temperature and mode, etc., making it more in line with your usage habits, bringing you a more comfortable using experience.
  • ✅ 【Comprehensively Security Protection】This whole house tankless water heater has multiple safety protection measures, including power on self-test, leakage protection, over temperature protection, anti dry burning protection and IPX4 waterproof, etc., fully ensuring your safe use. In addition, each product undergoes strict testing before leaving the factory to ensure safe and reliable operation.In addition, our tankless water heater offer long-term warranty and return/exchange services. If you have any questions or problems while using our electric hot water heater, please feel free to contact us, we will give you a satisfactory answer at the first time.

Product Details

Brand:PeiXWming
Model:MRTDF00F
Color:Black 240V
Dimensions:11.22 X 11.22 X 19.09 inches

Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water Heater for Kitchen Bathroom Washin

Image of Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water Heater for Kitchen Bathroom Washin

$54.68 @ Amazon.com

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Key Features

  • ✅ ✔ MINI INSTANT HOT WATER HEATER - This 110 volt water heater is equipped with state-of-the-art technology, with 3000W power, LED display. The electric tankless water heater 110v can raise the water by 82° F (28°C) (0.3GPM) -131° F( 55 °C) (0.5GPM) in 3-5 seconds, saying goodbye to long waiting times for hot water. The tankless electric water heater can set Fahrenheit or Celsius degrees by holding a power button for 6 seconds.
  • ✅ ✔ SAFETY INTELLIGENCE RELIABLE - This under sink water heater has multiple protection functions. IPX4 waterproof, leakage protection, dry-burning protection, automatic power-off in over-temperature and inactive states. Tankless hot water heater electric can meet your outlet temperature requirement. Large water flow means low temperature and small water flow means high temperature. TIP: Install vertically to avoid malfunction of the heating elements (E2).
  • ✅ ✔ LIGHTWEIGHT PORTABLE DESIGN - This small water heater compact design, is suitable for installation in the bathroom, kitchen under the sink, etc. The on demand water heater adopts a wall-mounted design, freeing up valuable space for your home, enjoy hot water at any time. This instant hot water heater under sink qualifies for ETL standard, you can expect the outstanding performance of this point of use water heater in the coming years.
  • ✅ ✔ EASY TO INSTALL AND APPLICATION - This under sink instant water heater comes with premade fixing screw holes, an English manual, and 1/2 inch NPT standard interface. This small electric water heater is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. The comfortable water temperature generated by this 110V water heater is suitable for cleaning food, bowls, clothes, face, hands, etc.
  • ✅ ✔ QUALITY WARRANTY & IMPORTANT NOTE - We provide a 24-month warranty for the electric water heater tankless. If you encounter any after-sales issues regarding the small hot water heater, you can always contact our electric tankless water heaters support team. Tip: This electric hot water heater is recommended to be connected with wires with a cross-sectional area of ≥ 2.5 square millimeters, and connected to trip switches of over 32a for use.

Product Details

Brand:xwdzswgs
Model:CS-RSQ-US
Color:White
Dimensions:4.33 X 4.33 X 7.87 inches

Portable Water Heater Propane Tankless - 6L 1.58GPM RV on demand Hot Gas Outdoor Digital Display Water Heater for Camping,Boat,Cabins

Image of Portable Water Heater Propane Tankless - 6L 1.58GPM RV on demand Hot Gas Outdoor Digital Display Water Heater for Camping,Boat,Cabins

$139.99 @ Amazon.com

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Key Features

  • ✅ 【On Demand Hot Water】Maximum power output 42,000btu/hour, 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.
  • ✅ 【CSA Approved Safety 】RUINOPAR Tankless Water Heater with CSA Approved Regulator, safe as per Canadian and US Standard.Automatically decrease water pressure between 2.5-145PSI. 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.
  • ✅ 【Safety Protection】The safety of the propane water heater is also an important thing that everyone will value very much; Our products have more than 6 protection methods; The product has safety protection that measures such as overheating protection, antifreeze protection, flame-out protection, anti-dry protection, high water pressure protection and low water flow protection, which prevent the product from doing harm to users,providing a comfortable and safe bathing conditions, reliable product.
  • ✅ 【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. Using the handle of the gas water heater or the mounting bracket on the back to hang it. It only takes you a few minutes to install it.
  • ✅ 【Energy Saving】With automatic ignition and flameout modes, when you turn on the shower nozzle, the tankless water heater automatically ignites, and when you turn off the shower nozzle, the water heater automatically put out the flame; With this unique design, our heater can save 11.5% energy for you and ensure your safety at the same time.

Product Details

Brand:RUINOPAR
Model:JSN-F01
Color:Bright White
Dimensions:12.49999998725 X 12.49999998725 X 16.49999998317 inches

Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater

Image of Rheem 3.5kW 120V Point of Use Thermostatic Tankless Electric Water Heater

$188.99 @ Amazon.com

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Key Features

  • ✅ ELECTRICAL REQUIREMENTS: 1 x 30 AMP Double Pole Breaker Required. Product installation hard wired to 120 volts requiring a 30-amp breaker.
  • ✅ SAVES SPACE: Ideal for low flow point-of-use applications, such as in a bathroom, office breakroom, wet bar, or garage. The compact size of the water heater is up to 98% smaller than a standard electric water heater.
  • ✅ EASILY ADJUSTABLE: Thermostatic temperature controls in 1-degree increments ranging from 80 to 140 degrees Fahrenheit for on-demand, consistent hot water.
  • ✅ INSTALLATION: Designed to be mounted in an upright position with the inlet and outlet water connections at the bottom of the unit for ease of installation with no venting required.

Product Details

Brand:Rheem
Model:RTEX-04T
Color:Gray
Dimensions:10.875 X 10.875 X 5.875 inches
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