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Best Instant Hot Water Dispenser Reviews | Buying Guide

Water is essential for nearly every household task, from cooking to cleaning. Especially in winter, using cold water for daily chores can be quite uncomfortable, and some tasks even require hot water to be done effectively. Traditional methods of heating water can be time-consuming and energy-intensive, potentially leading to higher energy bills. This is where an instant hot water dispenser becomes a valuable appliance.

An instant hot water dispenser is an electronic device that heats water quickly and efficiently on demand, using heating coils. Its benefits over traditional heating methods have made it a crucial appliance in homes. To choose the right hot water dispenser, there are a few important factors you should understand.

  • Wattage: The performance of a hot water dispenser largely depends on its wattage, which indicates how much power the device uses in one hour. This power is used to heat the water, so a dispenser with higher wattage can heat water faster. However, a higher wattage doesn’t necessarily mean higher power consumption.
  • Tank Capacity: The tank of the dispenser is important for storing hot water. The capacity of the tank determines how much hot water can be available at once. It also helps maintain the water’s temperature for a longer period, which can save energy by reducing the need to reheat water frequently.
  • Material: The choice of material for a hot water dispenser is crucial due to the high temperatures it needs to handle. The materials need to be durable and resistant to corrosion and scaling to ensure the dispenser’s longevity. Therefore, the materials for both the external and internal parts of the dispenser are selected with these considerations in mind.

Understanding these factors is important when choosing an instant hot water dispenser from the many options available. This article aims to simplify the selection process by highlighting the best instant hot water dispensers on the market and providing a “Buying Guide” to explain the critical factors to consider.

Best Instant Hot Water Dispenser Tabulation

Best instant hot water dispenserTank capacityOperational temperatureWattageBuying Now
InSinkErator H-HOT100SN-SS Instant Hot Water Dispenser2/3 Gallons (2.5 liters)60 degrees F to 210 degrees F750 WattsCheck On Amazon
InSinkErator H-HOT150SN-SS Instant Hot Water Dispenser2.5 Quarts - (2/3 Gallons)160 Degrees F to 210 Degrees F750 WattsCheck On Amazon
Ready Hot 41-RH-200-F560-BN Instant Hot Water Dispenser2.5 Quarts - (2/3 Gallons)140 F to 200 F1300 WattsCheck On Amazon
Stariver Instant Hot Water Dispenser0.5 Gallons77 Degrees F to 212 Degrees F1500 WattsCheck On Amazon
Ready Hot 41-RH-300-F560-BN Instant Hot Water Dispenser0.6 Gallons122 Degrees F to 208 Degrees F1000 WattsCheck On Amazon
Westbrass Instant Hot Water Dispenser0.6 Gallons167 Degrees F to 208 Degrees F1500 WattsCheck On Amazon

Best Instant Hot Water Dispenser Reviews

1. InSinkErator H-HOT100SN-SS Instant Hot Water Dispenser


InSinkErator Instant Hot Water DispenserOur first product on the list comes from a well-known brand, InSinkErator. It is one of the world’s largest manufacturers of instant hot water dispensers for domestic and commercial use. Driven by technology, it offers a wide range of customer-oriented products.

The InSinkErator H-HOT100SN-SS Instant Hot Water Dispenser System carries a stylish satin nickel finish design. With a maximum wattage of 750 Watts, the dispenser makes hot water available within seconds. This unit features a stainless steel tank which easily keeps ⅔ gallons of water ready to use. With a built-in push-button, the water dispenser lets you control the output temperature of water from 160 degrees F to 210 degrees F.

The water dispenser can be connected to any standard AC 120V outlet. This water dispenser is easily installed below the sink with the in-sink mounting. A single-hole faucet is provided, which can be installed in a standard 1-¼ to 1-½-inch diameter hole. The faucet comfortably sits over a counter with a 2-inch thickness. It offers full control over the flow of water without needing professional plumbing.


  • Material: Stainless Steel
  • Capacity: 3 Gallons
  • Voltage: 115 Volts
  • Wattage: 750 Watts
  • Finish Type: Satin Nickel
  • Temperature: 160 Degrees F to 210 Degrees F
  • Warranty: 1 year


  • It is suitable for heating water up to the lukewarm or boiling stage
  • It comes with a 1-year warranty
  • The table-top mounted faucet can be installed with any standard 1-¼ to 1-½-inch hole


  • The temperature control knob lacks temperature readings

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2. InSinkErator H-HOT150SN-SS Instant Hot Water Dispenser

InSinkErator H-HOT150SN-SS Instant Hot Water Dispenser

InSinkErator Hot100, an instant hot water dispenser that delivers near-boiling water in seconds. Ditch the kettle and enjoy 60 cups per hour of steaming water for coffee, tea, soups, and more.

The sleek Satin Nickel finish seamlessly integrates with any kitchen, while the 2/3gallon stainless steel tank ensures a steady stream of hot water. Easy-to-adjust temperature control lets you customize your water temperature, and tool-free installation makes setup a breeze.

But the Hot100 is more than just convenience. It’s about safety, with a child-proof lever and cool-touch spout. It’s about health, with an optional water filtration system for cleaner, tastier water. And it’s about efficiency, using less energy than a 40-watt light bulb.


  • Material: Plastic, Metal
  • Capacity: 3 Gallons
  • Voltage: 115 Volts
  • Wattage: 750 Watts
  • Finish Type: Satin
  • Temperature: 160 Degrees F to 210 Degrees F
  • Warranty: 1 year


  • Saves time in the kitchen for various tasks.
  • Built with quality materials for long-lasting performance.
  • Customize water temperature to your needs.
  • Fits seamlessly alongside existing faucet.


  • Requires additional counter space for the tank.

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3. Ready Hot 41-RH-200-F560-BN Instant Hot Water Dispenser

Ready Hot Instant Hot Water Dispenser Ready Hot Appliances specializes in hot water dispensers and their accessories. It provides various types of hot water dispensers that use premium quality material. Each model is designed by keeping the consumer’s needs in mind.

 The Ready Hot 41-RH-200-F560-BN Instant Hot Water Dispenser System offers a powerful performance. It has a maximum wattage of 1300 Watts, making hot water available on command. The water dispenser has an adjustable temperature dial that controls the output temperature between 140 F and 200 F. The dispenser quickly heats water to the set temperature and stores it in the stainless steel tank of  2.5 quarts capacity.

The dispenser easily provides 60+ cups of water every hour. It can be connected to a standard 110V power supply. The dispenser is mounted under the sink or counter as an under-sink unit. It features a dual-lever faucet with an open vent design to avoid pressure build-up. For added safety, the water dispenser also has a self-resetting thermal fuse that prevents the dispenser’s dry running.


  • Material: Stainless Steel
  • Capacity: 0.6 Gallons
  • Voltage: 110 Volts
  • Wattage: 1300 Watts
  • Temperature: 140 Degrees F to 200 Degrees F
  • Warranty: 3 years


  • The adjustable dial helps in adjusting the overall temperature of the water
  • A thermal fuse with a self-resetting feature avoids damage to the dispenser in case of dry running
  • It has a discharge capacity of over 60 cups of hot water every hour


  • It lacks a digital display and a low water level indicator

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4. Waterdrop Instant Hot Water Dispenser

Waterdrop Instant Hot Water Dispenser  Waterdrop works towards making people aware of the benefits of pure water. It has developed a range of water filtration appliances. By adopting R&D and using professional equipment, it is continuously upgrading its water solution service.

The Waterdrop WD-KJ600 Reverse Osmosis Instant Hot Water Dispenser is also a multifunctional unit, offering heating and filtration of water. This dispenser has a maximum wattage of 820 Watts, which instantly heats the water. Paired with a reverse osmosis system, the dispenser also filters the water in 5 stages. It reduces any unwanted chemical or mineral salt without affecting the quality of water.

The hot water is stored in a 70 oz stainless steel tank. It allows a maximum water discharge of 600 gallons per day. The output temperature of the dispenser can be set between 104 degrees F to 203 degrees F. This adjustment helps in reducing power wastage. The dispenser is mounted below the kitchen sink while the tap is placed above the counter. The tap features a smart display where details related to filtration and temperature control are provided.


  • Material: Reverse Osmosis Membrane & Carbon Block & PP Cotton
  • Capacity: 600 Gallons
  • Voltage: 110 Volts
  • Wattage: 820 Watts
  • Temperature: 104 Degrees F to 203 Degrees F
  • Warranty: 1 year


  • This unit comes with the child-lock feature to keep children away from hazards
  • The tank is made up of stainless steel which prevents lime scales or sediment formation in the inner walls
  • It has a drain ratio of 2:1 which promotes water saving and enhances the durability of the filter


  • This water dispenser is priced higher than other options

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5. Ready Hot 41-RH-300-F560-BN Instant Hot Water Dispenser

Ready Hot Instant Hot Water Dispenser

Ready Hot Instant Hot Water Dispenser, redefining on-the-spot water solutions. This sophisticated appliance transforms waiting time into a relic of the past, offering near-boiling water within seconds for your favorite beverages and meals.

With a capacity for over 60 cups per hour and an adjustable temperature range from 122°F to 208°F, tailored to your preferences, this dispenser ensures a seamless experience, all managed through a user-friendly digital control panel.

More than a mere convenience, Ready Hot is an energy-efficient powerhouse, delivering hot water precisely when needed, reducing waste and cutting costs. The choice of single or dual lever faucets, available in Brushed Nickel or Polished Chrome, allows customization to complement any decor. The compact design, coupled with automated tank protection for durability, makes Ready Hot an ideal solution for kitchens and offices alike.


  • Material: Stainless Steel
  • Capacity: 0.6 Gallons
  • Voltage: 110 Volts
  • Wattage: 1000 Watts
  • Temperature: 122 Degrees F to 208 Degrees F
  • Warranty: 3 years


  • Provides instant hot water on demand, saving time and effort.
  • Ideal for making coffee, tea, soups, noodles, and more.
  • Simple operation with clear temperature display and intuitive controls.
  • Built with stainless steel for long-lasting use.


  • Requires some countertop space for installation.

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6. Westbrass Instant Hot Water Dispenser

Westbrass Instant Hot Water Dispenser

Westbrass 2-Handle Dispenser Faucet & DigiHot Tank, seamlessly blending contemporary aesthetics with the convenience of instant hot water. This sleek and modern faucet delivers a remarkable 100 cups per hour at 6 preset temperatures, catering to diverse needs from beverages to household tasks.

Saving time and energy becomes effortless with the 1500-watt element, ensuring rapid water heating while minimizing energy consumption through its On/Off button and 1-watt standby power. Safety and convenience are paramount, featuring a spring-back handle, automatic overheat protection, and an under-sink tank that keeps countertops clutter-free.

Crafted for enduring quality, the Westbrass faucet boasts stainless steel and brass construction, promising longevity. The inclusion of the F400 in-line water filter guarantees not just hot water but also clean and refreshing water, making Westbrass a beacon of efficiency, safety, and enduring style in your kitchen.


  • Material: Stainless Steel, Brass
  • Capacity: 0.6 Gallons
  • Voltage: 120 Volts
  • Wattage: 1500 Watts
  • Finish Type: Matte
  • Temperature: 167 Degrees F to 208 Degrees F
  • Warranty: 1 year


  • Saves time boiling water and eliminates cluttered stovetops.
  • Useful for beverages, cooking, cleaning, and more.
  • Durable stainless steel and brass construction.
  • Choose from 6 preset temperatures for your needs.


  • The tank might not fit under all sinks, requiring additional space.

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Buying Guide For The Best Instant Hot Water Dispenser

The instant hot water dispenser reduces the dependency on stoves to heat water. This appliance saves overall time in heating water and offers good energy savings. We have already gone through a detailed list of such hot water dispensers. With the help of this buying guide, we will try to understand the governing factors related to instant hot water dispensers. Possessing enough knowledge about these actors helps in narrowing down your search.

1. Wattage

Why it Matters: The wattage of an instant hot water dispenser directly influences how quickly it can heat water. A higher wattage means the device can heat water faster, making it more efficient and convenient, especially during those busy mornings or when you need hot water quickly. Additionally, the wattage can affect the energy consumption of the device, which is an essential consideration for energy bills and environmental impact.

What to Look For: Look for a hot water dispenser with a wattage that balances speed and energy efficiency. Dispensers typically range from 500 to 1500 watts. If you frequently need hot water or are often in a hurry, consider a model towards the higher end of this spectrum. However, if energy efficiency is a priority, a model with a moderate wattage (around 750 to 1100 watts) may provide a good balance between speed and energy use.

2. Tank Capacity

Why it Matters: Tank capacity determines how much hot water the dispenser can hold at any given time. This is crucial for households with high hot water demand or for those who entertain guests frequently. A larger tank capacity means you can dispense more hot water without waiting for the unit to reheat. However, a larger tank may also take up more space and use more energy to keep the water hot.

What to Look For: Consider your household’s hot water usage when choosing the tank capacity. Instant hot water dispensers typically range from 1/3 gallon to over 2/3 gallon tanks. For single users or small families, a smaller tank may suffice. For larger families or those who entertain often, a larger tank (closer to 2/3 gallon or more) may be more appropriate. Balance your space, usage needs, and energy considerations when making your choice.

3. Material

Why it Matters: The material of the instant hot water dispenser affects durability, taste, and health. Stainless steel, for example, is renowned for its longevity and resistance to rust and corrosion, ensuring that the water does not pick up any metallic taste or contaminants. Other materials, like plastic, may be less expensive but can affect the water’s taste and may not last as long.

What to Look For: Look for a dispenser with a stainless steel tank for the best durability and water quality. Stainless steel is also easier to clean and maintain, which can contribute to the overall lifespan of your dispenser. If the exterior material is a consideration for aesthetics, many models offer various finishes such as chrome, brushed nickel, or black, allowing you to match the dispenser to your kitchen’s decor. However, the internal tank material is most crucial for health and performance.

4. Water Temperature Control

Why it Matters: The ability to control water temperature is vital for both convenience and utility. Different beverages and tasks require different water temperatures — for example, green tea is best brewed at a lower temperature than black tea or coffee. A dispenser with adjustable temperature settings allows for more precise control, enhancing the taste of your beverages and the effectiveness of your cooking.

What to Look For: Seek out a dispenser with a range of temperature settings, typically between 160°F to 212°F. Some advanced models may offer more precise control, allowing you to adjust the temperature in increments. This feature is particularly useful for tea and coffee aficionados or for any task that requires a specific water temperature.

5. Mounting Type

Why it Matters: The mounting type of an instant hot water dispenser affects installation and space utilization in your kitchen. Countertop models are portable and easier to install but can take up valuable counter space. In contrast, under-sink models save space on the counter but require more complex installation and a dedicated space under the sink.

What to Look For: Your choice should be guided by your kitchen space and installation preference. If you prefer a cleaner look and have space under your sink, an under-sink model with a separate tap might be ideal. For those who want easy installation or have limited under-sink space, a countertop model could be the better option. Ensure that the model you choose fits your kitchen’s layout and aesthetic preferences.

6. Safety Features

Why it Matters: Safety is paramount, especially in households with children. Hot water dispensers can pose a burn risk, so it’s important to look for models with safety features that prevent accidental dispensing or overheating.

What to Look For: Key safety features include child locks on the dispensing button, automatic shut-off mechanisms to prevent the unit from overheating, and cool-touch exteriors to reduce the risk of burns upon contact. Some models may also feature spill-proof designs or alarms to alert you of any malfunction. Prioritizing these safety features can help protect your family from accidental injuries related to the hot water dispenser.

Best Instant Hot Water Dispenser – FAQs

1. What are the advantages of using an instant hot water dispenser?

Ans: The instant hot water dispensers save the overall energy and time consumed to boil water on a stove. With this appliance, you don’t have to wait for hot water to come through the tap. They also consumed a low amount of energy compared to the stoves.

2. How safe are the instant hot water dispensers?

Ans: The instant hot water dispensers are made up of good quality material which shows good durability. They are certified with various standard safety organizations under different tests. With the help of proper insulation, the hot water dispensers keep hazards like electrocution away. Few models are also equipped with child lock systems to avoid accidental use.

3. What are the maintenance steps to keep the hot water dispenser in better shape?

Ans: With the help of periodic cleaning of the dispenser, you can maintain a hot water dispenser in a good condition. Some manufacturers offer a maintenance plan to service the dispenser after reminded usage. To clean the build-up of dissolved minerals on the inner surface of the dispenser, descaling agents can be used.

4. Why does the variable temperature feature matter?

Ans: The variable temperature features offer a customizable setting to heat the water. With a set temperature, the dispenser will heat water to that limit. It helps in getting water with a certain amount of heat. This feature helps in saving the loss of energy compared to uncontrolled heating. You can use the temperature setting depending on the type of application.


The instant hot water dispensers offer a convenient way to produce and store hot water on demand. These appliances are essential for cooking, cleaning, or any other application where hot water is needed. Equipped with various features, the hot water dispensers cater to numerous applications. This article offers a detailed list of the best instant hot water dispensers. The buying guide and FAQ section further ease your selection process by explaining a few important factors. By referring to this discussion, we have also chosen our favorite instant hot water dispenser from the list.

  • The InSinkErator H-HOT100SN-SS Instant Hot Water Dispenser is an excellent choice for anyone who wants the convenience of instant hot water at their fingertips. Its compact design, stylish finish, and easy-to-use features make it a great addition to any kitchen. 
  • The Ready Hot 41-RH-200-F560-BN Instant Hot Water Dispenser is a powerful and versatile instant hot water dispenser ideal for households with high hot water demand. Its dual lever faucet, adjustable temperature, and open vent compatibility make it a convenient and user-friendly option. However, its larger size and manual temperature control might not be suitable for everyone.
  • Our last product offers various features that suit the smart home lifestyle. The Waterdrop Instant Hot Water Dispenser serves various functions. For heating, this 820-Watt unit quickly heats the water. It can be set between 104 degrees F to 203 degrees F, serving various applications. The 70 oz tank stores hot water and keeps the temperature maintained for a long time. Apart from heating, it also filters water with the help of a 5-stage reverse osmosis process. The filtration process effectively removes any contaminants and unwanted salts from the water. Being a sink-mounted unit, the faucet is directly placed over the sink. This faucet has a built-in display that offers various details related to the filtration and heating process. With such a never-ending list of features, the price of this unit becomes justified.

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