Ultimate Review of the Best Instant Hot Water Dispenser in 2023

Best Instant Hot Water Dispenser

Would you like a mug of hot water? Maybe with a tea bag dipped into it? Or do you want to start boiling spaghetti without waiting for long? Having hot water at disposal at any time of the day is a blessing, isn’t it? Whether you want to wash your baby’s milk bottles or brew a cuppa early morning, waiting for water to boil can be a pain. 

This might remind you of all those times when you used every ounce of your patience, waiting for the water to heat up. You might be groaning and shuddering even as you think of it again. Sigh! We understand. 

Hence, we’ve got something to make you happy. Yep. With technology, there is nothing that isn’t entirely impossible. When you can get instant hot water around the clock, there is no reason you should have a bad day, waiting for your coffee to be ready. 

Can you make out what we are talking about? Take a guess. The kettle? Nope. It sure is a useful little pot, but we’ve got something even better. Think about an item that doesn’t need to be moved or lifted. And the one with less work than a kettle! Really! 

Let’s not keep you in suspense anymore. We are talking about instant water dispensers. Aha! Now you realize. You might have seen this at work, right? Why not use the same in your home? 

Are you not sure which one to buy? There are too many models in the market, we understand. It can be confusing. But we are here and so are you. Why wait then? Shall we get started and know the top 5 best instant hot water dispensers in the market in detail? We have also listed a buying guide with the benefits of using this wonderful unit and how to select a model for your home.

Let the ride begin! 

Quick Comparison Table & Our Pick

This as you would expect from us is an EPIC post so grab a coffee before you start  and see how we cut through every product and review it with precision. IF YOU ARE SHORT ON TIME and need to know the results of our reviews , CHECK THE RESULTS TABLE BELOW!







8.3 lb

2/3rd gallon

160˚F - 210˚F (factory pre-set at 200˚F)

3-year in-house full service limited warranty

7 lb

2/3rd gallon

160˚F - 210˚F (factory pre-set at 200˚F)

1-year in-house limited warranty

9.2 lb

5/8th gallon

Max 198˚F

1-year warranty for dispenser; 3-year

Other Great Recommendations

0.99 lb

5/8th gallon

Max 190˚F

3-year manufacturer warranty

7.28 lb

2/3rd gallon

Max 200˚F

3-year in-house limited warranty

Best Top 5 Instant Hot Water Dispensers in the Market for the Money 

Best Top 5 Instant Hot Water Dispensers in the Market for the Money

SinkErator H-Wave-C Involve Series Wave Hot Water Dispenser - Editor’s Choice 

InSinkErator series is by one of the best and famous brands, Emerson, that sells instant hot water dispensers in the market. We have an H-wave-C model as the first model on our list. As it is made of durable stainless steel, the dispenser comes with an attractive faucet. From adjusting the thermostat to availing a 3-year warranty, there are many benefits to buying this unit. Even the installation is relatively easy compared to other models. Yep. Shall we see more about it? 

InSinkErator H-Wave-C Involve Series Wave Hot Water Dispenser

Features and Benefits 


As it comprises of stainless steel with a chrome finish, this model looks compact and sturdy. It speaks the brand name and provides instant hot water through the faucet that comes with the unit. The unit is also available in satin nickel finish apart from chrome. 

The water tank can hold up to 2/3rd gallons of water and delivers around 60 cups of hot water per hour. The thermostat can be adjusted between 160 degrees F and 210 degrees F. The default setting is 200 degrees F, which can be a little too hot for some people. You can change the temperature after installation. The auto-closing safety valve is a bonus. 


This is a surprisingly easy model to install. Everything you need for the purpose comes with the unit. From washers to screws, you don’t have to search for anything. Make sure you have Teflon tape nearby. You’ll need it when fixing the faucet. The tank has to be mounted on the counter or the wall where there is an AC power outlet nearby. 

But if you don’t have a hole in the counter to fix the faucet, you’ll need to drill one with a diameter of 1.25 to 1.50 inches. One point to keep in mind is that the counter should not be more than three inches thick. 

Ease of Use 

Hot water dispensers are easy to use. You don’t have to do anything special. But you will need to know how the control level is operated. The level moves backward by about 1.25 inches. In this space, it goes from on to off. The stout also can be moved a bit. While it is just 30 degrees on either side, it is enough for us. Be careful not to move it when the tap is on. 

Another advantage of this model is that you can buy and fit InSinkErator’s water filtration system and connect it to the dispenser to clean water before heating it. Connecting it to an RO system might result in a slight metallic taste of the water.  


  • Adjustable temperature settings
  • Self-closing valve for safety 
  • 3-year in-house limited warranty for full service 
  • Strong and durable 


  • Can make sounds when heating water
  • Needs a counter of 3-inch thickness to fix the faucet

Check SinkErator H-Wave-C Involve Price on Amazon

InSinkErator HOT150 - Best in 750 Watts

Does it surprise you that we have back to back models of InSinkErator? Not really, right? The name is popular for a reason. HOT150 is more or less similar to H-wave-C. So why is it in the second place? Well, that’s because the warranty period is limited to a year. 

However, it is more than a pound lighter at just 7 pounds and has the same DIY installation process. The capacity is the same, and so is the output. Let’s take a look at these points in detail, shall we? 

InSinkErator HOT150

Features and Benefits 


The unit has a minimalistic look with a satin nickel finish. The stainless steel water tank keeps the water hot based on the thermostat settings you choose. Like H-wave-C, the default setting is 200 degrees F and can be adjusted between 160 degrees F and 210 degrees F. 

The unit is corrosion resistant and comes with a faucet that needs to be fixed into the counter. There is no compromise on the quality despite the significant difference in the price of the model. It is made using high-quality metal and BPA-free plastic. This makes it durable, reliable, and safe to use. 


You can mount the tank in your kitchen near an AC power outlet. Setting it up doesn’t require any special skills. You can also fix the faucet on your own if you are used to DIYs at home. The faucet needs a ¼- ½ inch (diameter) hole to sit compactly on the counter. The counter should not be more than 2 inches in thickness. Make sure you measure it before ordering this model. The handle turns a full quarter, so drill the hole for the faucet at least 2 inches away from the wall. 

Ease of Use 

With 2/3rd gallon tank capacity, the unit produces 60 cups of hot water in a single-use. That comes to around 0.75 gallons of water per minute. Once you fix the faucet, you can start using it without delay. The safety valve makes it necessary to hold the handle while collecting hot water in the pot. But this prevents accidental burns, so we aren’t too worried about the inconvenience. 


  • Adjustable thermostat
  • DIY installation 
  • Get 60 cups of hot water at once
  • A stainless steel tank and BPA-free plastic tube 


  • Have to hold the handle to collect water 
  • The counter cannot be more than 2 inches thick

Check InSinkErator HOT150 Price on Amazon

FRANKE HT-300 Little Butler Under Sink Instant Hot Water Filtration Heating Tank - Best for Heavy Duty 

If you are in search for an under the sink model for hot water dispensers, you’ve got one of the best options here. This model does justice to garb the third place on the list from being perfect for heavy use to having a seamless integration with the Franke water filtration system. Though the name says HT-300, the unit uses 1300 watts of power to heat the water.

While the installation needs a little work, the rest of it is pretty good and highly useful. Moreover, it is compatible with almost all existing faucets. Take a look at the below details. 

FRANKE HT-300 Little Butler Under Sink Instant Hot Water Filtration Heating Tank

Features and Benefits 


Considering that it sits inside a cupboard under the sink, HT-300 is not much to look at. It comes in two colors- silver and black. There is no pattern or design per se. The unit is a rectangular metal box that stores water and heats it. Does it bother us much? Not really.

It can be used in the showers as a water heater. If you get bored of it after a while and want something cute, simply shift this into your shower. Sounds good, right? 


Well, this can be a little tricky. It’s better to call the plumber to handle the installation. Sitting under the sink and connecting to the main pipeline is not something you’d want to do with little knowledge. Moreover, if you purchased the dispenser plus filter combo, you don’t want to risk a wrong connection, do you? Also, you have to buy the connectors separately. They are not included in the kit. 

Ease of Use 

It is the adjustable thermostat that makes it easy for us to set the water's temperature as per your taste. However, the maximum heat capacity is 198 degrees F, which should be sufficient for most needs. While some people complained that the unit did not come with a faucet, we didn’t mind it. Since our sink already has a strong tap, we had no use for another. 

Do you know you can use the Franke app to control the filter in case you use it? Yep. The app alerts you to change the filter. The taste of the water doesn’t change due to filtration. 


  • Great for heavy usage 
  • Adjustable thermostat 
  • Connect to Franke filtration system 
  • Under-sink model 


  • Need to buy the connecting tubes separately 
  • Doesn’t come with a faucet 

Check FRANKE HT-300 Little Butler Price on Amazon

Ready Hot RH-SS Water Dispenser - Best for Low Maintenance 

We have yet another under the sink model on the fourth place on our list. With 1300 watts of power, this unit can heat water with excellent efficiency. The stainless steel tank holds 5/8th gallons of water and steadily supplies hot water whenever required. 

While the noise can be irritating at times, you don’t have to worry too much as the primary unit sits under the sink. With special sensors and other features, Ready Hot RH-SS is a good option if you don’t want to invest much in maintaining the piece over the years. 

Ready Hot RH-SS Water Dispenser

Features and Benefits 


While the design is not spectacular, it is highly useful and durable. The unit is quite lightweight at just 0.99 pounds. Do you know what we like about this one? It comes with two faucets, one each for cold and hot water. Yep. With brushed nickel or chrome finish, you can either buy the tank with the faucets or without them. However, you will need open vented faucets to connect to the unit.


The unit comes with connector cords and ground pins. That’s good, right? For safety reasons, the unit must be grounded perfectly during installation. If you find it too hard to set it up under the sink, hand over the job to a plumber. But we did find it quite decent in terms of installation. It’s neither too simple nor too complex. If you know a little about connections, you should be able to handle it with ease. 

Ease of Use 

This model is suitable for home, offices, cafes, or restaurants. The automated sensor detects when the tank is empty and prevents the dry run. Despite being a 1300-watt model, RH-SS uses less power than a 40-watt bulb. While the thermostat is adjustable from 140 degrees F to 200 degrees F, we noticed that you need to set the temperature higher than required. There seems to be a difference in the temperature.  


  • Specialized sensor to detect empty tank 
  • Under the sink model 
  • Very low maintenance
  • Rust-free and durable 


  • Makes noise when heating water 
  • Need to set the thermostat a bit higher than the required temperature 

Check Ready Hot RH-SS Price on Amazon

InSinkErator HWT-F1000S GIDDS-301901 Water Dispenser - Best Combo Unit 

The last best instant hot water dispenser on our list is again InSinkErator. HWT-F1000S comes with a certified filtration system to have filtered hot water at your disposal at any time of the day. You can get around 60 cups of hot water in an hour. With adjustable temperature control, this model has quite a few benefits. 

You don’t get the dispenser or the faucet along with the unit. And people have complained that not all models are compatible with HWT-F1000S. That means you might have to buy a compatible InSinkErator faucet to suit the unit. Here’s a little more about the model. 

InSinkErator HWT-F1000S GIDDS-301901 Water Dispenser

Features and Benefits 


InSinkErator manages to create good-looking models even for hot water dispensers. Besides a sleek design, the unit has a control knob on the front to adjust the temperature as required. You can set it anywhere between 160 degrees F and 210 degrees F. The 2/3rd gallon tank is enough for regular home requirements. 


Installation is something many customers are torn about. While some say it is super easy, others swear it is very challenging and they found it difficult to do it on their own. One reason is that the existing faucets were not compatible with the dispenser. And since the faucets don’t come with the unit, it can be an additional expenditure. This model easily fits under the sink, and we suggest you call a plumber to take care of the installation. 

Ease of Use 

With a wonderful filtering system and an instant hot water dispenser, you get to drink and use clean water without any microorganisms and bacteria. The filter also removes chlorine and makes the water taste better than before. With 750 watts power, the unit is efficient, durable, and reliable. 

The manufacturer recommends changing the filter once every six months for the best results. The 3-year warranty is another advantage of choosing this model. Safety is another factor you don’t have to worry about. The unit has dry-start protection, which prevents the dispenser from heating up without water in the tank.  


  • NSF standard 42 certified water filtration system included
  • Durable and energy-efficient 
  • 3-year warranty 
  • Adjustable thermostat 


  • Faucet and additional parts need to be purchased separately
  • Installation difficulty for some users 

Check InSinkErator HWT-F1000S Price on Amazon

Best Instant Hot Water Dispenser Buying Guide 

Best Instant Hot Water Dispenser Buying Guide

So we are done with the top 5 models that are the best deals for you. But, hey, wait a while before you order one. We’ve still got information to share. 

As you have already seen, the hot water dispenser is a small and compact kitchen unit powered by electricity. It has a thermostat inside that maintains the temperature of the water in the tank at optimum levels. 

The dispenser is connected to the cold water pipe instead of the tap. This makes it possible for the dispenser to automatically fill up with water and heat it whenever the water levels fall below a certain point. 

You open the faucet and fill hot water in the glass/ mug/ pot. The dispenser notices the change in water level, and it collects cold water through the pipeline. The process continues, giving you hot water instantly, irrespective of the day and time. 

Benefits of Instant Hot Water Dispenser 

Are you still debating why you can’t continue using your cute little kettle? After all, you’ll need hot water only a few times, is that it? It’s natural to have doubts, right? You want to be absolutely sure before investing in any gadget. That’s the reason we made it a point to list out the benefits in a separate section. They’ll clear your doubts and help in finalizing the decision. 

  • Energy Efficiency: Kettle or dispenser? Which one uses less power? The dispenser. Yes. That’s because it doesn’t always have to heat up water. It heats once and maintains the temperature until you use some of the water. Imagine heating water in a kettle and forgetting to use it. You’ll have to repeat the process again. With a dispenser, you only have to turn on the faucet and collect the hot water. 
  • Appearance: Dispensers are no less cute. Different shapes, sizes, and designs with patterns make them look pretty and can suit your kitchen décor. If not, you can install some models under the sink. Just keep in mind these details when you order your dispenser. We will discuss about it later as we proceed. 
  • Time-Saving: Think about the minutes you can save each morning, especially when you are in a hurry. Dispensers hold hot water ready for you. You can control the temperature so that the water wouldn’t be too hot for your taste in some models. 
  • Ease of Use: People who have mobility issues will find it hard to carry the kettle. We don’t want to risk dropping it and burning our toes, do we? Elders will find it highly convenient to grab a glass of hot water without spending considerable energy in the process. 
  • Versatile: By versatile, we mean the dispenser can be used at home, at the office, in schools, in colleges, cafes, and just about anywhere, the need for instant hot water arises regularly.
  • Quantity: Kettles need to be filled to a certain point if you need to use them. The rest of the hot water may or may not be used. You can heat the required water on the stove, but that will also take time. With dispensers, you get as much hot water as you want. Be it half a glass or a pot full. The rest will be heated and ready for you again. 

Maintenance and Cleaning 

Even though brands provide maintenance services, you should know how to take care of your hot water dispenser. As it stores water all day and night, you should make sure the insides are clean and neat, right? 

Read the instruction manual carefully before you try anything. Unplug the unit well in advance so that the water inside cools down. Remember, it is a hot water dispenser. The unit is going to be hot, and so will be the water inside it. 

Start cleaning on the outside and then inside. Avoid using any chemicals or harsh cleaning agents. Don’t ever use bleach to clean the dispenser. Add a drop of mild dish wash soap or eco-friendly cleaner to 4-5 cups of water. Immerse a soft and dirt free cloth in the solution and wipe the insides of the tank. Use of a dry cloth to mop it dry. Let the inside dry out completely before plugging it back again. If the reservoir is removable, it would be the best to remove, clean, dry, and put it back in. 

Some models have drip trays. If your unit does, make sure to clean it as well. You just have to drain the leftover water and follow the same procedure of wiping. 

Factors to Consider When Selecting the Best Instant Hot Water Dispenser

Finally, we come to the part that tells us how to shortlist dispensers and choose the best from the best. It’s time to take a look at the factors we should keep in mind when selecting the best instant hot water dispensers for our daily use. 

  • Power Usage 

Power is measured in watts. The higher the watts, the more capacity the dispenser will have. But that also means more power consumption. Choose a dispenser based on how much hot water you require per day or for half a day. Unless you need a high-performing unit, pick the one with lesser watts for optimum energy consumption. 

  • Size of the Tank 

Similar to the above point, the size of the tank will denote its capacity. A larger tank will hold more water. But, whether you can the dispenser in your kitchen is the trouble here. You don’t want to end up with awkward-looking units because the dispenser is too large and fills the room, do you? In case you need a buy a large dispenser, you should first make a place for it in the kitchen, measure the dimensions, and then order one. 

  • Aesthetic Tap 

Some of the hot water dispensers come with a cute-looking faucet. You can replace the existing one with this if it suits the overall appearance of the kitchen. But some brands charge extra for the faucet. No point in buying another when you already own one, right? You might as well end up saving some money by opting for the model without a tap. 

  • Temperature Adjustment 

Some models allow you to set and change the temperature to heat the water inside the tank. This will help you reduce energy usage. If the preferences of you and your family members differ, picking a model with adjustable temperatures is good. Just make sure you don’t end up arguing over who changed the temperature without informing others. *wink*

  • Filtration

Do you want a dispenser that also filters water? This would supply the twofold purpose of heating the water and also removing any dust particles from it. However, very few brands sell dispensers with filters. You can buy them separately and get the filters fixed when installing the dispenser. If you doubt the quality of the tap water in your area, investing in a set of filters might be a good idea. 

  • Material and Make 

Majority of the instant hot water dispensers are made of stainless steel for durability and reliability. They don’t rust and work effectively for a long time. The make varies from brand to brand and model to model. Choosing a brand that follows the manufacturing and quality standards will always be a safer option. 

  • Water Flow/ Hour 

While the flow per hour is linked to wattage, you will find a separate mention of how much water can be produced per hour. Manufacturers listed it along with other product features. The average flow rate is 14 liters per hour. This is a decent amount and is sufficient for most homes. The heat level would be around 140 degrees Fahrenheit to 190 degrees Fahrenheit.  

  • Support Services

Just as with every other gadget, hot water dispensers also need maintenance. While you can do basic cleaning on your own, the actual service is best left to the provider. Certain brands are famous for providing periodic in-house maintenance services. You have the option to sign a yearly maintenance contract with them so that the technicians will come, check the dispenser, and ensure it is in proper condition as per the contract terms. 


Are you all geared up to order the instant hot water dispenser now? We hope we have provided you with the required information from all sides. Don’t forget to compare warranty and customer service if you are unable to decide between two models. These factors can play an important role in tipping the scales one way or another. Forget kettles and install the dispenser in your kitchen. Not just for coffee, tea, and soup but also the daily dose of hot water to detox your body. Happy buying!


Are instant hot water dispensers safe?

The water dispensers come from safe material construction to ensure quality drinking water. Ensure you put clean water in the dispenser to improve its safety for use. Since the dispenser uses electricity, always be careful when handling it, as faulty machines can cause electric shock.

Are hot water dispensers durable?

With heat involved, the construction of the dispenser is more intense. Different brands use varying materials, but in the end, all deliver high-quality and safe products. Research the manufacturer's reputation before you make the purchase decision.

Can I afford an instant hot water dispenser?

The market is fair and comprises products with different prices. There is always a price that will not drain your pockets which you need to consider. Check the specs and ensure they are closer to what you want and costs reasonably.

Can children operate an instant hot water dispenser?

Children can run the hot water dispenser successfully when you train them well. The hot dispenser can be dangerous if kids tamper with the connecting systems or when they accidentally leave it running. Ensure you put it in a safe place to prevent injuries to the kids. Better yet, train your kids on operating the unit while still educating them about the impending dangers.

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