Best Instant Hot Water Dispensers

The best instant hot water dispenser based on our reviews is InSinkErator Contour H-CONTOUR-SS.

This piece presents you with a reliable list that includes the best instant hot water dispenser systems from two of the leading brands in the industry as well as from other reputable brands.

These are the best when it comes to quality, performance, and design as you are going to see in our in-depth reviews.

We’ll also provide you with the ultimate buying guide plus other important information about hot water dispensers to help you make the right purchase decision.

Let’s get started.

5 Best Instant Hot Water Dispensers Review

InSinkErator H-CONTOUR-SS Instant Hot Water Dispenser



  • 750-watt heating element takes less than 30 seconds to heat
  • Adjustable thermostat with a decent temperature range (160oF – 210oF) 
  • Can deliver up to 60 cups of heated water per hour 
  • Moderate tank capacity of up to 2/3 gallons 
  • Stylish chrome finish faucet with twist knob handle and self-closing valve
  • Dry start protection feature to protect the unit from damage
  • Low energy consumption at only 0.605 kWh per day
  • Compact streamlined profile that fits into most spaces
  • A fairly easy installation process with little maintenance required
  • Budget-friendly and comes with a 3-year limited warranty


  • Tends to make some noise during operation
  • The faucet doesn’t offer much clearance

InSinkErator is perhaps one of the largest and most popular manufacturers of instant hot water dispensers for residential and commercial use. 

The company offers some of the best hot water dispensers in the industry at very competitive prices, which is among the many reasons that have earned it great popularity.

It’s also why we’ve covered several of their models in this comprehensive review article. 

With that said, topping our list of best instant hot water dispensers is the InSinkErator H-CONTOUR-SS.

This unit is part of InSinkErator’s Invite Series and it takes the lead because of its outstanding features and performance.

It’s a stylish and functional system made specifically for those looking for an affordable but highly reliable instant hot water dispenser.

If you’ve never owned an InSinkErator dispenser, then the InSinkErator H-CONTOUR-SS might just win you over when you get to see what it offers below.


To start, the InSinkErator H-CONTOUR-SS comes as a complete instant hot dispenser system consisting of a hot water tank and faucet. 

The first impressive thing about this unit is its ability to constantly deliver hot water immediately when you need it.

The system is equipped with a 750-watts heating element which is capable of effectively heating cool water to near boiling point (200oF). 

It will give you water that’s hotter than what your ordinary hot water tap can produce and it takes not more than 30 seconds to heat which is pretty fast considering that a kettle can take up to 3 minutes.

It’s ideal for quick beverage and meal preparation. 

The tank can hold up to about 2/3 gallons of water.

It’s not the largest capacity, but it’s sufficient to yield a maximum of 60 cups of hot water per hour which includes the refills that happen when the tank is empty. 

With such a high production rate, the H-CONTOUR-SS is a suitable option if you regularly use or require large amounts of hot water.

It will give you an instant and continuous supply of hot water without getting overwhelmed. 

Besides this, the system has a temperature control dial conveniently placed on the front part of the tank that allows you to adjust the water temperature from a range of 160oF to 210oF. 

This flexibility gives you the chance to heat your water to a temperature you desire rather than having to settle on a pre-defined temperature that can’t be adjusted as is the case of kettles and regular home water heaters. 

Dispensing Mechanism

The other convenience this unit provides is an ergonomic handle on the faucet it comes with which makes dispensing hot water effortless.

It’s actually a twisted knob handle that you just turn to either side and hold to make the hot water run. 

The handle is incorporated with an instant self-closing valve, so once you release it, the water automatically stops running.

It’s a safety feature that helps prevent accidental burns resulting from hot water being dispensed when the handle is not held. 

The faucet itself is miniature with the spout height measuring 3.7 inches.

It doesn’t offer much clearance from the spout to the sink but it’s solidly built to last for a long time and the handle is very comfortable to operate.

Now the best part about the InSinkErator dispensers is that they are designed to be energy efficient.

The H-CONTOUR-SS model is no different as it uses a 750 Watt heating element which consumes less energy to heat the water. 

It consumes around 0.605 kWh per day which is 40% less energy consumption compared to a regular light bulb, thereby you can expect low operational costs that won’t lead to a significant increase in your monthly energy bill. 

One last important thing we liked in this dispenser is the inclusion of a dry-start protection feature.

This vital addition prevents the unit from running when the water level goes below a certain level or when there’s no water flowing in the tank.

It’s an important safety feature that helps protect the dispenser from damage resulting from overheating. 


Installing the InSinkErator H-CONTOUR-SS is not that hard at all because it’s a tool-free connection system and everything you need to set it up is provided, plus an installation guide that’s easy to follow. 

The only challenging part might be installing the faucet, especially for a novice, as you will have to drill the mounting hole onto your sink if you don’t have one already drilled.

It needs about 1¼ to 1½ inch hole.  

If you don’t have an electrical outlet under your sink, then you will also have to install one to connect the tank which plugs into a standard 120V outlet.  

The tank has a compact, streamlined profile, measuring just 6 x 3.7 x 5.6 inches and weighing 7.4 pounds.

It will fit nicely under the sink without taking up too much space. 

We particularly liked the simple yet elegant design of the tank too which is complemented by an equally stylish chrome-finished designer faucet that can blend well with most kitchen décor styles. 

In terms of durability, this is a solidly built dispenser featuring a metal construction that’s resistant to rusting, limescale build-ups, and all kinds of deformations.

On top of that, it’s backed by a 3-year warranty, thereby, it will definitely last longer when you take good care of it. 

One slight downside though is that the unit is a bit noisy during operation. It produces a noticeable rumbling noise around 3 to 4 times every hour for around 30 seconds each time.

It’s the same noise made by a lot of other kitchen appliances, so it’s not really something that will be a bother to many people. 

All that said, the InSinkErator H-CONTOUR-SS is indeed a stylish and reliable hot water dispenser that does its job efficiently and requires little to nothing in the way of maintenance.

When you also factor in the affordable price tag, it’s the best bet if you are after getting value for your money.

Ready Hot RH-200-SS Hot Water Dispenser

Ready Hot RH-200-SS


  • Heats up faster using a 1300-watt heating element 
  • 2.5 quarts tank can deliver more than 60 cups of heated water per hour
  • Temperature is adjustable from 140oF to 200oF
  • Dual supply system that delivers the hot and cold water
  • Multiple safety features to prevent getting burned and tank burnout
  • Easy installation process and less expensive to maintain
  • Affordably priced and comes with a 3-year warranty


  • The installation manual is not that clear
  • It can produce a little bit of noise

Ready Hot RH-200-SS is amongst the best value instant hot water dispensers in the market.

It’s a convenient and highly functional unit that comes at an affordable price which makes it a perfect choice for those on a budget. 

Ready Hot has developed two versions of this unit which include, the RH-200-F560-BN featuring a dual lever hot and cold faucet, and the RH-200-F570-BN which uses a single lever hot-water-only faucet. 

Besides the faucets, there’s almost no difference between these two versions and as such, we will look at the RH-200-F560-BN model in this review which is worth considering if you are after a multipurpose water dispenser.


The Ready Hot RH-200-F560-BN makes use of a 1300-watt stainless steel heating element that can heat water up to 200oF which is near the boiling point and just the right temperature that’s conducive for preparing hot beverages like coffee and tea. 

It takes around 4 seconds to heat up which is remarkably fast hence you don’t have to wait long before the hot water gets dispensed.

The holding tank of the unit has a decent capacity of 2.5 quarts (0.62 gallons) that provides a dispensing rate of approximately 60 cups of hot water per hour but the production rate can reach up to 100 cups per hour. 

This is almost the same amount of hot water that most common dispensers can deliver in an hour and it’s sufficient for households that require more hot water during the day.  

The RH-200-F560-BN also allows you to modify the temperature to your liking.

It has a rotator thermostat with a dial knob at the front that lets you adjust the temperature from 140oF (60oC) to 200oF (93oC). 

This is a relatively large temperature range compared to other models and it makes this Ready Hot unit versatile and practical to use in different situations.

Dispensing Mechanism

However, the outstanding feature that has many people drawn to this dispenser is its dual function.

It comes with a dual-lever faucet where one lever is for dispensing hot water and the other for cold water. 

The hot water lever has a red button on it which you have to push down and hold to unlock the lever for it to dispense the hot water and keep it flowing. 

This is an essential feature for safety purposes, especially if you have curious children.

It helps minimize burning hazards that may result from the initial delay of the heated water, which is likely to spew out in full force. 

The cold water level doesn’t require you to hold it to dispense water.

You just push it in and it stays on to give you water at normal temperature.

Plus, the spout can swivel hence you get to dispense water in any direction which is convenient in the event your sink is filled with utensils. 

The flow rate isn’t extremely fast, but that’s good because you are handling hot water.

For the cold water, you will get normal water pressure, although it’s a little slower compared to a standard faucet. 

Above and beyond anything else, this Ready Hot RH-200-F560-BN dispenser is incorporated with automated tank protection that comprises a self-resetting thermal fuse.

This is another notable safety feature that will help prevent tank burnout should you ever have an accidental dry startup. 


It’s relatively easy to install the Ready Hot RH-200-F560.

You can manage it yourself although the manual isn’t that helpful.

It comes equipped with an LED indicator light at the front which displays two lights, red light, and green light. 

The red light indicates when the tank is heating to the maximum adjustment, whereas the green light confirms that the tank is fully heated.

The unit plugs into a standard 110V under the sink outlet. 

With this model, you also get to choose between chrome and brushed nickel faucet, both of which would look nice with most kitchen décor.

The best thing is that the unit doesn’t require rigorous maintenance.

It’s easy and a little more inexpensive to maintain than many other common dispensers.

It uses less than 0.9 kWh in a day which is much less than what your ordinary 40-watt lightbulb consumes per day.

Furthermore, there won’t be any wastage of water or energy since it will be running only when you need it.

The tank is heavy-duty and made from a strong stainless steel material with a brushed nickel finish for added durability.

It’s solid build quality. 

Aside from the user manual not being clear and the little noise the unit makes when producing hot water, this is a solid, durable, functional, and convenient hot and cold water dispenser that’s reasonably priced.

If you want good value for your money or have children at home, the Ready Hot RH-200-F560 is certainly your ideal hot water dispenser. 

Anaheim AH-1300 Quick and Hot Instant Hot Water Tank

Anaheim AH-1300 Quick and Hot


  • A 1300-watt heating element provides a fast heating capability
  • Can produce over 60 cups of hot water in an hour
  • You can raise or lower the temperature to your liking
  • Features a self-resetting thermal fuse to prevent overheating
  • Energy-efficient operation using less than 0.9 kWh per day
  • Installation is easy and the unit comes with a 1-year warranty


  • The faucet has to be purchased separately
  • Does not temperatures above 190oF

Waste King has been manufacturing kitchen appliances for over 50 years and their products have a reputation for being of top quality and highly reliable. 

Taking the seventh position on our list is the company’s Anaheim AH-1300 Hot Water Tank.

Unlike the other units we’ve covered herein, this one is not a complete dispenser. 

It’s a heating tank only designed to provide an instant and continuous supply of hot water.

It doesn’t come with a faucet, but you can buy it separately. 


This Waste King tank contains a 1300-watt heating element that can provide temperatures of up to 190oF. 

What’s interesting though is that it offers a faster cycling time (heat recovery) which is basically the time until the hot water becomes ready again after the tank has been emptied.

It heats up almost immediately, so you get the hot water in a matter of seconds. 

The tank itself has the capacity to hold up to 5/8 gallons of water which is about 2.5 liters and it can deliver over 60 cups of hot water every hour. 

This fairly large capacity coupled with the fast heating time and production rate means this Anaheim AH-1300 Hot Water Tank can do well in homes that need continuous hot water fast. 

The tank features a simple switch on the front part for temperature control.

It allows you to adjust the temperature from low to high (or 140oF to 190oF), hence you get the water at the temperature you desire which is convenient.

The switch also serves as the control for turning off the tank when it’s not in use.

Waste King has as well added a self-resetting thermal fuse to the tank to prevent it from overheating and it helps keep the water at the desired temperature too. 

Concerning energy efficiency, the unit uses not more than 0.9 kWh per day.

In other words, it will cost you less than $3 every month if you run it daily, hence as far as efficiency is concerned, it passes the test.  

As we stated before, this is a tank-only system.

It does not include a faucet, so you can buy it separately should you need it, but it can easily function with an existing faucet. 

However, if you don’t prefer getting a separate faucet, Waste King has other models that come with both the tank and the faucet.

We’ve included one of these models below which you can check out if you are thinking of investing in a Waste King hot water dispenser. 


Being a tank-only unit it’s very easy to install Anaheim AH-1300, especially if you have an existing faucet already mounted on your sink.

It will work with a regular 110V power outlet.

The tank is made of insulated stainless steel material that’s resistant to rust and corrosion, thereby it’s durable in every aspect and it retains heat well to keep the water warm for a long when turned off. 

The only downside is that it doesn’t come with a faucet.

The other unfortunate thing is that it’s able to reach 200oF or above.

Despite that, its quality and performance are no doubt outstanding plus we liked the fact that it’s reasonably affordable.

Therefore, if you don’t mind the lack of a faucet or have no problem getting a separate faucet, then this Anaheim AH-1300 model is a good deal.

It’s a superb option too if you are looking to upgrade your existing hot water system or just want a backup tank. 

Westbrass D271H-12 Hot Water Dispenser

Westbrass D271H-12


  • Fast and efficient heating tank
  • Can produce more than 60 cups of heated water every hour
  • Moderate temperature range from 145oF to 190oF
  • Solid brass faucet with spring-piston handle 
  • Automatically turns off the hot water for safety 
  • High-arc spout provides ample sink clearance 
  • Easy-to-install and mounting tools are included
  • Up to four attractive faucet colors to choose from
  • Comes with a 1-year warranty


  • Doesn’t reach beyond 190oF
  • A bit noisy when powered

The D271H-12 Hot Water Dispenser is Westbrass’s most impressive model so far.

It’s one of the best single-handle dispensers out there offering reliable performance and convenient functionality.


While it’s relatively simple in terms of design, this Westbrass D271H-12 dispenser is highly effective with respect to delivering instant hot water.  

The unit uses a 1300-watt heating element and it’s incorporated with QHT-1 technology which is dubbed as quick heating water.

What this means is that it heats the water rapidly no matter the temperature setting you select.

Coupled with a large 2/3 gallons tank that can generate more than 60 cups of hot water every hour, this unit will be able to give you instant access to near-boiling water at any time. 

Moreover, the tank utilizes copper tubing connections.

These are very efficient tubing, especially for delivering hot water to the faucet, so it’s completely capable of handling even heavy-duty use. 

You can also adjust the temperature to the level you prefer as the unit comes with a temperature control switch that provides a wide temperature range from 145oF to 190oF.

The switch as well allows you to manually turn off the unit if needed.

Dispensing Mechanism

The Westbrass D271H-12 offers quick and easy water control using a single-handle faucet.

The faucet has a spring-piston handle which you push down to dispense water. 

If you happen to leave it on without knowing, the tap won’t continue running.

The handle automatically turns itself off stopping the dispensing of the hot water.

This not only prevents accidental burns but also saves power and helps prevent waste of water. 

The faucet also features a high-arc spout that’s about 9¼ inches tall, hence it provides plenty of clearance from the countertop or sink.

It won’t get in your way. 

Now the best part about this Westbrass model is that you have four awesome faucets finish color options to choose from, so you can precisely complement your existing kitchen décor.  

You can choose between polished chrome, antique copper, matte black, or oil-rubbed bronze.

This particular model comes with an oil-rubbed bronze finish faucet.

Oil-rubbed bronze is almost black but it has copper undertones that give it a classy, vintage look.  

If you love rustic and antique designs, this will suit you well.

Furthermore, the spout is nicely thin and has an elegant gooseneck projection, so it will certainly make your kitchen look more appealing.   


The D271H-12 stands out too for its ease of installation. If you are a DIY person, you will find it easy to set up this unit.

It’s a simple and straightforward process, and a detailed guide is provided to take you through the whole process. 

The package also contains everything you will need to install it including the mounting materials and all the required tubes for a quick, convenient installation.

According to the manufacturer’s recommendation, you will need a silicone seal for the installation, not a plumber’s putty.

More so, the system is designed in such a way that you can fit a filter between the water supply and the heating tank, so before the water gets inside the tank to be heated, it gets filtered and cleaned first. 

The tank is strong stainless steel while the faucet is made of solid brass, so they are very sturdy and durable.

Stainless steel and brass are as well resistant to moisture and heat, thereby, they will last longer without rust or corroding. 

If there’s a setback to point out, it would be the fact that the heating element can’t quite reach up to 200oF or beyond.

It’s a shame since most hot water dispensers reach up to 210oF.

Even so, its temperature range is still sufficient enough for most situations. 

Having been so well made, easy to use, and highly functional, you are not likely to encounter any issues with this Westbrass D271H-12 hot water dispenser.

It’s worth a close look if you are searching for a simple and effective single-handle hot water dispenser. 

Waste King H711-U-SN Hot Water Dispenser

Waste King H711-U-SN Hot Water Dispenser


  • A 1300-watt heating element ensures quick heating time
  • Capable of dispensing up to 100 cups of heated water per hour
  • Temperature is adjustable from 140oF to 190oF
  • Single lever dispensing with a self-closing valve
  • High-arc spout offering up to 10-inches of sink clearance 
  • Energy-efficient consuming less than 0.8 kWh a day
  • Installation is simple for most people with DIY skills
  • Backed by a 1-year limited warranty


  • May start dripping at the spigot after a while
  • Has a maximum heating temperature of only up to 190oF

Following the Westbrass D271H-12 dispenser is the Waste King H711-U-SN system which is yet another powerful hot water dispenser on our list that falls within the budget-friendly cap.

Waste King has loaded this unit with tons of useful features to give homeowners who want the convenience and versatility of instant hot water dispensers an affordable option that will not require them to go for a second mortgage for it.


The Waste King H711-U-SN employs a 1300-watt heating system that reaches near-boiling temperatures in just a few seconds. 

The heating tank has a capacity of 5/8 gallons and combined with the 1300-watt heating element, this unit can produce as much as 100 cups of hot water each hour.

That’s enough output for a big household with a large demand for hot water. 

The water generated by the system is at near-boiling temperature (190oF) plus the tank is fitted with an adjustment knob that allows you to change the heating temperature from 140oF up to 190oF which is the maximum temperature level. 

The unit also comes equipped with a safety feature that allows you to increase and decrease the temperature without causing over-expansion of the bladder. 

There’s a self-resetting fuse which further helps prevent tank burnout in the event of a dry start. 

The Waste King H711-U-SN is an energy-efficient unit too and it uses less than 0.8kWh in a day which is lower than what a 40-watt light bulb consumes.

Therefore, like all the rest of the dispensers we’ve included on our list, it will cost you not more than $3 monthly. 

Dispensing Mechanism 

Apart from the Westbrass D271H-12 and the Ready Hot RH-100-F60-BN above, this Waste King H711-U-SN model is the only other dispenser herein that comes with a faucet that features a high-arc spout. 

The spout is 10 inches high and has a reach of 4.125 inches, thereby you get ample sink clearance that makes filling mugs, bowls, pots, and other dishes with hot water easier regardless of the shape, size, or type of the sink.

The faucet has a single lever that you have to hold back to maintain the flow of the hot water.

When you let go, it snaps back to the off position hence stopping water flow so that accidents are avoided and water is not wasted.  

The aesthetics of the faucet doesn’t disappoint either as it sports a fancy yet elegant design that’s well enhanced by a shiny satin-nickel finish.

If that doesn’t win you over, there’s also a chrome finish faucet which is as well shiny and attractive enough for different kitchen décor.


It won’t be so difficult to set up this Waste King hot water dispenser with some basic DIY skills.

It uses quick-connect fittings and the installation manual provides clear steps on how to carry out the whole process including mounting the faucet on your counter.

Although we couldn’t find any general downside about the unit, you should note that some users claim that a few of the faucets were defective and started dripping after a while.

It’s not a widespread case but it’s something you might want to keep in mind just in case. 

This is a wonderful instant hot water dispenser nonetheless, and an option we would recommend if you are on a limited budget and want a large capacity dispenser that will be able to give you a lot of hot water daily. 

Instant Hot Water Dispenser

An instant water dispenser is a system or device that’s designed to provide hot water on demand through a special auxiliary faucet installed near the sink.

These appliances are able to heat water to temperatures of about 201oF or close to the boiling point.

Whether it’s for preparing a hot cup of coffee, tea, soup, sauces, or just hot water for other kitchen tasks, an instant hot water dispenser is a useful and practical addition to any home.

It makes your work convenient and saves you the time you would have used to boil water on the stove.

Most importantly, it simplifies and accelerates many kinds of kitchen chores.

Selecting a good instant hot water dispenser may, however, be somewhat confusing because there are tons of options available in the market from different brands.

Working Process

An instant hot water dispenser operates much like an electric water heater or electric kettle.

The system is made up of a faucet and the main unit that contains an electric heating element and a small storage tank.

The main unit is connected to the cold water supply line under the sink and then to the hot water faucet it comes with which is installed onto the sink separate from your regular faucet.

The cold water from the supply line flows through the body of the faucet and then it’s diverted into the heater tank where it’s heated up to a near-boiling temperature by an electric coil (the heating element) and held in the tank waiting to be dispensed through the faucet for use.

Unlike conventional water heaters, the tank in hot water dispenser systems never becomes pressurized and this is because these dispensers use an open-vent faucet which basically means that there’s no valve on the faucet gooseneck.

For a conventional water heater system, the faucet valve is usually placed right after the heater tank which results in a pressurized tank.

However, in a hot water dispenser system, the faucet valve sits right before the tank hence resulting in an “open-vent” style faucet.

With this design, the pressure never builds up inside the heater tank which is very important as too much pressure inside the tank would consequently result in failure.

So, how does a water dispenser get to deliver the hot water to your faucet? Well, once the water is heated by the electric coil, it expands and fills the expansion chamber within the upper part of the storage tank.

When you open the faucet, more cold water flows into the bottom part of the tank, thereby displacing the hot water held in the tank and the expansion chamber.

As a result of this displacement, the heated water is forced out of the tank and up through the faucet for use.

The hot water arrives immediately and is much hotter compared to the standard hot water taps.

You don’t wait at all for it to warm up although the spout dispenses the water slowly compared to a typical faucet.

Most instant hot water dispensers come with an adjustable thermostat that controls the water temperature.

This way, the system is able to maintain the water temperature according to how you set the thermostat.

The thermostat also turns off the heating element once the water in the tank attains the set temperature.

Some more advanced units feature a control dial that allows you to adjust the thermostat to tweak the temperature and even turn the unit off.

Adjustment is often required only when water is too cool or so hot such it boils away and causes the tank to overheat.

The Benefits

Having an instant hot dispenser installed in your kitchen has several benefits which include:

Hot Water on Demand

The primary benefit you stand to get from having an instant hot water dispenser is a ready supply of hot water whenever you need it whether it’s for basic household use such as drinking, preparing beverages, food, etc., or any other application.

If you have a very busy lifestyle and often don’t have the time to wait for the water to boil on the stove or coffee maker to heat up, then you really need to invest in an instant water dispenser.

You will enjoy the benefit and convenience of having hot water instantly straight from the tap saving you a lot of time. Water heaters can boil water too but the downside is that you will have to wait until the water boils in the kettle.

However, with an instant water dispenser, you get the hot water right away allowing you to enjoy your hot beverage or prepare your food in no time. 

Constant Supply of Hot Water

Another reason why you may need an instant hot water dispenser is the fact that it can give you hot water constantly.

With a kettle or any other conventional water heater system, you can only heat a limited amount of water.

An instant hot water dispenser, on the other hand, always comes with a storage tank and the capacity of this tank is quite a benefit as it can fill at least several gallons of water.

This means that whenever you draw hot water through the faucet, you’ll likely never have to wait until the tank is refilled again to heat more water.

The tank fills itself continuously since whenever you open the faucet to get hot water, cool water from the supply flows into the tank to displace the heated water and force it through the faucet.

Therefore, it’s able to produce hot water constantly, and for the entire day.

Furthermore, with an instant hot water dispenser, you can easily heat a larger amount of water continuously without any issues unlike water heaters or a kettle which limits you to a certain amount. 


An instant water dispenser features a heating element that uses energy to heat the water.

The good thing though is that, unlike other water heaters, instant hot water dispensers are usually built to be energy efficient.

As such, they tend to use much less energy than ordinary kettles or water heaters to deliver hot water.

The heating element (electric coil) is thermostatically controlled hence it only maintains a certain temperature according to your thermostatic settings.

Moreover, it’s not constantly heating like a home water heater since the thermostat turns off the system once the water in the storage tank reaches the set temperature.

Basically, these dispensers use around 0.5 to 1 kWh of electricity in a day, therefore, the cost of running one based on our rough estimate would not be more than 10 cents a day.

However, the cost of power varies from one place to another, so equally the operating cost may vary depending on the area you live in.

Adjustable Water Temperature

The availability of a thermostat and a control dial (switch) in instant hot dispensers allows you as the user to control the temperature of your water.

This is a beneficial feature you won’t get with an ordinary water heater or kettle since it allows you to adjust the heat in order to keep the water at a temperature that you desire or prefer.

Versatile Applications

Unlike a kettle, instant hot water dispensers are versatile appliances that you can use for a number of things like preparing beverages in the morning, making food like pasta or macaroni, warming baby bottles, and cleaning kitchen counters or other surfaces with cloth-dipped warm water.

In other words, an instant hot water dispenser provides a wonderful way of tackling multiple kitchen-centric tasks using just one appliance.

Compact and Hassle-Free Operation

The last benefit of these dispensers lay in their ease of use and feasibility.

While they come in a wide range of designs and designs, they are really easy to use even for persons with disabilities.

First, the control dial or switch gives you easy control over the system allowing you to adjust the water temperature to your liking as well as turn the dispenser on/off with ease.

Second, these units have a sleek look that makes them presentable and they are quite compact and hence can fit in any kitchen design no matter the size.

Choosing The Best Instant Hot Water Dispenser

Instant hot water dispensers have different designs and you would want to make sure that the unit you are purchasing is not a waste of money that will end up annoying you someday to come.   

There are several factors you will need to carefully evaluate to ensure you get the best instant hot water dispenser that will meet your exact requirements.

We’ve highlighted some of these factors below.

They will give you more detail and help you narrow it down to the best unit.


Instant hot water dispensers don’t vary widely when it comes to the heating element’s wattage.

They are mostly either 500, 750, or 1300 watts units.

To put it simply, the dispenser’s watts rating helps to give a good indication of its heating speed.

Therefore, a unit with high electrical power or watts will heat a large amount of water faster than one with low electric power.

For example, a 1,300-watt dispenser will heat water considerably faster than a 750-watt model.

More power means faster performance, so if you often use a lot of hot water daily, then you might want to consider a dispenser with high wattage.

Note that more power may seem to translate to higher running costs, but in practice, most instant hot water dispensers are pretty energy-efficient and cost less to run in comparison to a 100-watt light bulb.

Temperature Range

The sole purpose of instant hot water dispensers is to avail hot water instantly, so the temperature range is one very important factor to take into consideration when selecting an instant water dispenser.

Some dispensers don’t feature temperature control settings, hence they operate on a preset temperature level for hot water that remains constant throughout.

However, most dispensers, including all the models on our list, offer temperature control settings that allow you to heat the water to your preferred temperature.

The temperature range will vary though from dispenser to dispenser.

If you can find a unit that offers a wide temperature range, then the better.

The broader the temperature range, the more flexibility you will have.

You will be able to perform a variety of tasks around the home that require different water temperature levels.

For instance, you can lower the temperature down to a cooler level for certain tasks such as warming the baby’s bottle or food, and then raise it to a higher level when you need water for sterilization and washing dishes or scrubbing some tough grease stains off a pan.

Temperature settings are essential to consider especially if you like to prepare herbal tea, which tends to vary in taste at different temperatures.

We would recommend going for a dispenser that offers a decent temperature range, from around 140oF to 210oF, which is near the boiling point of 212oF.

Examples of some of the dispensers on our list with relatively wide temperature ranges are the Ready Hot RH-200-SS (140oF to 200oF), InSinkErator H-CONTOUR-SS (160oF to 200oF), and Anaheim AH-1300 (140oF to 190oF).

Like we said earlier, go for a wider temperature range because you will have a more versatile dispenser that will allow you to easily heat water at desired temperatures.

It’s also a feature that’s very helpful in saving on electricity bills as it reduces and helps manage the level of power consumption.

It’s good that you also consider a model that can reach very high temperatures.

A unit that’s able to heat up to 200oF or beyond.

Not all dispensers can hit such high temperatures, but if you purchase one, you are guaranteed to have super-hot water which is more helpful in so many situations.

Speed or Water Flow per Hour (Cups Produced per Hour)

The speed of water flow per hour refers to the total amount of cups of hot water a dispenser can fill within an hour.

Some models can deliver up to 100 cups of heated water an hour while others can produce a maximum of 60 cups per hour. 

Generally, when it comes to the rate of production of hot water or rather the speed, preference takes precedence.

If your demand for hot water during the day is usually high, then you might want to go with one that can deliver up to 100 cups per hour.

You have to also factor in the heat recovery time or the time in which the heated water is ready again once the tank has been emptied.

A unit with a faster cycling time and production rate would be much more convenient since you will have sufficient hot water delivered within a short amount of time which is an advantage, especially when you have plenty of guests around.

Tank capacity

Tank capacity is another major factor that needs close consideration in order to select the best instant hot water dispenser.

By tank capacity, we refer to the total amount of water that the tank can hold at one time. 

This basically helps give you a rough idea of how much hot water you will be able to dispense throughout the day.

It will also help tell you how much energy or power the unit is likely to use.

Most tanks of instant hot water dispensers can hold between ½ a gallon and 2 gallons of water at a time which translates to around 60 to 100 cups of hot water per hour.

Here, your choice will come down to your demand for hot water as well as your level of usage.

You will have to first consider the number of people that are in your household as well as how often you use or need hot water.

If you have a large family or tend to constantly use a lot of hot water every day, you will need to invest in a dispenser with a high capacity and rate of production in terms of cups per hour.

The Westbrass D271H-12 and Ready Hot RH-200-SS are good examples as they offer about 0.6 gallons of tank capacity and are quite capable of delivering up to 100 cups of hot water in an hour.

In short, the higher the tank capacity and watts, the more hot water you will get from the dispenser.

On the other hand, if you have a smaller family or just need hot water for the occasional cup of coffee or tea, a dispenser with normal capacity will do fine.

Look for a unit with a capacity of ½ or 5/8 gallons that can deliver up to 60 cups of heated water per hour.

Some good examples on our list are the InSinkErator H-CONTOUR-SS, InSinkErator H-View-SN, and Anaheim AH-1300.

Keep in mind that, a larger tank capacity will require more energy to heat it which means more power consumption compared to a lower capacity unit.


The size of the unit or rather the tank size matters a lot when choosing an instant hot water dispenser.

The main reason for this is that these dispensers are designed to be connected to your existing water supply, so they are usually installed under the sink and close to a power outlet.

Therefore, it’s crucial to look at the dimensions of the tank or dispenser to ensure you have enough space under your sink to accommodate it.

Fortunately, all the models we’ve reviewed above are small and compact.

They don’t require much space, hence they can easily fit in small to average under sink cabinets.

If you prefer a more portable unit, then a countertop dispenser like the Sunbeam Hot Shot hot water dispenser would be ideal for you.

Style & Decoration

Modern instant hot water dispensers are available in various styles and colors.

Therefore, it’s good to also consider getting an adequately finished unit that matches your style or your kitchen décor.

The main part you will need to look at when you are considering the style of the dispenser is the faucet design and finish.

Most instant hot water dispensers come with chrome-finished faucets which is the traditional look of most standard kitchen faucets.

However, if you don’t want these common, contemporary-looking faucets, there are plenty of other different faucets that feature interesting finishes that can complement your kitchen décor or spice it up.

Some of the pleasant faucet finish you can consider include, brushed nickel, bronze, antique copper, matte black, and oil-rubbed bronze.

These colorful faucets may vary in shade from one brand to another but can certainly leave your kitchen looking more attractive.

Ensure you at least pick a unit that matches your kitchen’s style so that it doesn’t look out of place.

You don’t have to go for a boring dispenser just because you want hot water on demand.

You can find a nice unit that will match your taste.

Westbrass D271H-12 is one model that gives you four attractive faucet finishes to choose from which include polished chrome, antique copper, matte black, and oil-rubbed bronze.

You also look at the shape and size of the faucet to ensure that you select an option that will fit well above your sink without inferring your kitchen design or other parts. 

The spout should offer sufficient clearance from the sink so that it doesn’t get in your way when you have a large mug or other containers to fill with hot water.


The installation process of instant hot water dispensers may vary from brand to brand, but overall, many models are designed to facilitate easy DIY installation.

In most cases, you will need a few basic tools for the setup.

There are units though that require no tools at all, particularly countertop dispensers like the Sunbeam Hot Shot and tank-only systems like the Anaheim AH-1300 Hot Water Tank.

Generally, with an instant hot water dispenser, you will have two main parts that will require installation – the heating tank and the faucet.

The tank is usually installed under the sink and it has to be mounted in a vertical position at about the same level as the plumbing line.

Several manufacturers include the mounting bracket or materials in the package as well as a couple of other tools required for the tank installation such as a T-fitting and a control valve.

The challenging part of the installation process would probably be setting up the faucet.

The only major issue here is drilling a mounting hole into the sink top which will require some basic DIY skills.

For this step, the tools you will need to have are safety glasses, a drill, and drill bits.

However, if you have an existing hole already drilled in your sink, then you may skip this step when setting up your dispenser.

Besides this, you will need to ensure the place you plan to mount the tank is near an electrical line or power outlet.

For safety purposes, if you have to set up the electrical lines to supply power to the tank, it’s highly advisable to leave the installation to a professional plumber.

To avoid any setbacks, it’s good to check with your dealer or manufacturer first about the warranty terms regarding installation because sometimes DIY installation can void the warranty on the dispenser.

A majority of the models reviewed on our list above come with most of the tools you need for installation and are designed to allow for a relatively easy DIY installation.

Make sure though that you pick a unit that comes with a clear and illustrative instruction manual that will guide you step-by-step through the installation process.

Other Features to Consider

Many hot water dispensers offer additional features that help enhance their performance, efficiency, and convenience in terms of operating them.

Some of the features you should look out for are.


A considerable number of instant hot water dispensers are either supplied with a built-in filter or come with a separate filter.

This means that in addition to heating your water, these systems will be able to filter out many common impurities present in the water.

If you are going for a dispenser with a filter, ensure you pick one with the right filter based on the condition of your water or the contaminant you want to remove.

If it’s unpleasant tastes, odors, chlorine, or other common chemicals you want to remove, then look for a unit with an activated carbon filter.

If it’s sediments you want to get rid of, then a sediment filter is what you should go for.

If it’s reducing limescale build-up, then a unit with a limescale filter will suit you best.

Self-resetting Thermal Fuse

Hot water dispensers come equipped with various safety features to prevent the tank or heating element from damage resulting from burnouts or overheating.

Self-resetting thermal fuse, otherwise known as boil-dry protection, is one of the essential safety features that can protect your unit from damage.  

This feature basically stops the dispenser from working by turning it off when the water in the tank is not enough or when there’s no water at all in the tank.

This way, it prevents the heating element from overheating and burning out.

If the unit attempts to heat when there’s no water inside the tank, it could easily turn into a serious safety hazard that may lead to home damage or personal injury.

Therefore, whatever unit you choose, make sure it has a self-resetting thermal fuse or other safety features that can prevent tank burnout and possible accidents and fires.

Self-Closing Valve

Considering that hot water dispensers heat water to a near-boiling point, there’s a slight chance of accidental burns and scalds happening when dispensing the hot water from the tap.

Choosing a unit with a faucet that has a self-closing valve or safety lock built on it is a great way to prevent such accidental burns from occurring.

A self-closing valve automatically turns off the flow of hot water when you withdraw your hand from the handle or when the faucet is not in use.

This not only prevents getting burned accidentally but also helps prevent water wastage.

Moreover, getting a unit that has a safety lock is particularly important if you have children or elderly people at home.

They may accidentally turn the wrong faucet on while you are away washing hands and end up getting burned by the nearly boiling water.

Even pets could accidentally turn on the faucet and cause accidental burns.

For these reasons and to ensure the safety of your children and family, we would highly recommend you buy a dispenser model that’s equipped with a self-closing valve, a safety lock, or any other safety system for children.

Temperature Control

While we’ve talked about the importance of having a hot water dispenser with a wide temperature range, it’s worth noting that most units only come with a max to min setting, so the exact temperature at every level tends to vary with each model.

Although this is not a must-have feature, you would be much better off with a unit that has a temperature control knob or dials where the temperature at each level is marked or indicated.

This way, you will be able to adjust the temperature with some level of precision and heat the water to your desired temperature.


Finally, one last thing you should consider when evaluating different instant hot water dispenser systems is the presence of any add-ons.

In essence, many of these systems don’t offer much with regard to accessories, so you shouldn’t worry if your chosen dispenser doesn’t have much to provide in terms of accessories.

Nonetheless, look out for things like mounting tools, tubing, connectors, and other extra accessories or tools that the models you’ve shortlisted provide besides the dispenser itself.

If you pick a unit that comes with all the necessary tools, then you will have an easier time when it comes to installation plus you won’t incur any cost in purchasing additional tools needed to set up your dispenser.


Buying an instant hot water dispenser will save you a lot of precious time and money.

You will never have to go through the painstaking minutes or hours of heating water again.

With that said, you must know exactly what you are looking for because choosing the ideal hot water dispenser model will depend on your specific needs which include your consumption capacity and urgency, among other considerations.

You should always pick a model that’s reliable, efficient, safe, and easy to use, and will work perfectly for a long time.

In other words, a unit that will meet your hot water demands without much fuss or resulting in high running costs.

If it’s your first time looking for the right instant hot water dispenser, then our reviews and buying guide above will make things much easier for you.

Therefore, take your time to read them to get an idea of the key factors that make up the best hot water dispenser, and compare the different models in our listing to see which one suits your needs and budget.

best instant hot water dispenser

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