Installing an instant hot water dispenser in your home will allow your family to access filtered, near-boiling water – usually around 200 degrees Fahrenheit – without waiting for a kettle to heat up. Originally becoming popular in the 1970s, these dispensers represent an unobtrusive addition to your kitchen that provides water for cooking, cleaning or preparing hot beverages – all with no waiting and with efficient use of energy.
All of the units listed on this best instant hot water dispenser article can be used for everything from thawing frozen food, warming baby bottles and making hot cereals to kickstarting boiling for cooking, removing stubborn lids and labels, quickly cleaning dishes and even cleaning your home without the use of harsh chemicals. Many families enjoy having easy access to fresh, filtered water for their favorite hot drinks right at their fingertips all the time. And some options even provide access to both hot and cold water through the same unit.
Many different models are available – before you make a purchase, take the time to read through the instant hot water dispenser reviews below. Our team has rounded up some of the most popular units available and providers a run-down of their main features, pros and cons.
Instant Hot Water Dispensers Comparison Table
|InSinkErator HWT-F1000S Instant Hot Water Tank and Filtration System|
Our Top Pick for 2019
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|InSinkErator H-CONTOUR-SS Invite Contour Instant Hot Water Dispenser System|
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|InSinkErator H-HOT150SN-SS Invite Single Handle Instant Hot Water Dispenser System|
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|Ready Hot RH-200-SS Instant Hot Water Dispenser System|
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|Anaheim AH-1300 Quick and Hot Instant Hot Water Tank|
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|Ready Hot RH-100-F560-BN Instant Hot Water Dispenser System|
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|Westbrass D271H-12 Velosah Single Handle Instant Hot Water Dispenser System|
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Best Instant Hot Water Dispenser Reviews
1. InSinkErator HWT-F1000S Instant Hot Water Tank and Filtration SystemView Price
This version is our team’s top pick! This filtration system is designed to work with the InSinkErator Indulge Series water dispensers to deliver filtered, hot water instantly. For this model, you will need to purchase a dispenser separately.
The InSinkErator HWT-F1000S features a compact and sleek design and includes a 750 watt tank that is designed for long life and improved performance over previous models. It comes with a 2/3-gallon tank, easy installation (tool-free!) and an adjustable temperature range – from 160 to 210 degrees Farenheit. The unit also features dry-start protection, so you can rest easy in its safety features.
In addition to providing hot water at your fingertips, the InSinkErator HWT-F100S reduces any taste and odor associated with chlorine and also reduces the presence of particulates in your hot drinks. With an NSF standard 42 certified water filtration system, this model allows for an automatic shutoff of the water while the filter is being replaced.
Users were drawn to the ease and instant nature of the hot water dispensing, though some expressed concern that the unit was not compatible with other manufacturer’s faucets and for some was more difficult to install than expected. Overall, reviews were positive and position this unit as a cost-effective and convenient solution for hot-water needs.
In addition, this model comes with a three-year warranty for the hot water tank that includes in-home service, plus a one-year warranty for the filtration system. This offer includes free house calls – including both parts and labor – for the entirety of the warranty.
2. InSinkErator H-CONTOUR-SS Invite Contour Instant Hot Water Dispenser SystemView Price
This model is one of the newest and most budget-friendly of the InSinkErator line. The hot water dispenser has a stylish look and also boasts a satin nickel, modern-finish faucet, plus a 750-watt, 2/3 gallon stainless steel hot water tank. With its easily adjustable thermostat, you can control the temperature of your hot water between 160 and 210 degrees Fahrenheit.
If you’re a DIY person, this may be the unit for you; it lends itself well to a DIY installation – there’s no special plumbing required, and the tank’s tool-free connection and protection against dry start make for an easy setup. You will need to have an unswitched AC power outlet, plus a dedicated control valve with compression fitting and T-fitting. In addition, the faucet requires a 1 ¼ to 1 ½-inch diameter opening for installation. The InSinkErator HOT 150 also features a spout height of 6.25 inches and a spout reach of 5.38 inches.
Consumers especially liked the elegant aesthetic of this dispenser, with its satin nickel finish and stainless steel water tank. And, as with most dispensers, this one is easy to use and dispenses hot water quickly and easily for a variety of household uses. There have been a few reports of the faucet sizzling and spitting if the temperature was turned too high, which worked itself out once the water temperature was lowered a bit. In addition, some have reported the need to purchase additional parts before installation could be completed.
With this unit, you’ll get a one-year “We Come to You” full-service in-home limited warranty, which includes free house calls for the full duration of the warranty.
3. InSinkErator H-HOT150SN-SS Invite Single Handle Instant Hot Water Dispenser SystemView Price
This stylish and functional model comes with everything you need for quick and easy installation, plus an easy-to-follow instruction set that walks you through every step of installing your faucet and making the water connection – all tool-free. The set includes the hot water tank, faucet, trim ring, wing nut, screws, lines, gasket, semi-circular mounting, plate and installation guide. According to the manufacturer, this machine should deliver roughly 60 cups of near-boiling water within an hour. To successfully install this unit, you’ll need to have a 1 ¼- to 1 ½-inch countertop hole or sink, plus an unswitched AC power outlet, a dedicated control valve with compression fitting and T-fitting.
This particular model also works well with the InSinkErator F-1000S and F-2000S filtration systems, which can help make your water taste even better – these systems filter out sediment, chlorine and other substances that affect the taste of drinking water. In addition, this unit is billed as both energy- and water-efficient.
Reviewers were impressed by the instant dispensing, overall ease of use and adjustable temperature settings, though some reported that installation was more complicated than expected and should be handled by a professional. In addition, some users reported that the unit is louder than expected during use.
This model includes InSinkErator’s “We Come to You” three-year, limited in-home warranty – this includes five free house calls and covers both parts and labor. All you have to do is call the InSinkErator toll-free service line to connect with a factory-authorized service provider in your area.
4. Ready Hot RH-200-F560-BN Instant Hot Water Dispenser SystemView Price
This model delivers hot water anywhere between the temperatures of 140 and 190 degrees Fahrenheit and has a capacity of 100 cups per hour of hot water. With a one-year warranty, this model also comes with a fast and easy – no tools required – installation process. It features a 1300-watt heating unit and boasts heater protection control, including a self-resetting thermal fuse, plus a 5/8-gallon stainless steel tank that includes a removable drain plug.
You can count on this machine to last a long time – its patented water displacement system is designed to increase its service life by helping prevent mineral buildup. Your unit will come with a power cord, tank mounting bracket, a quick-connect fitting and quick-connect filter fitting.
You’ll also need to purchase additional parts like a pressure regulator and a faucet, both of which are easily and inexpensively available. Particularly if you’re using a Waterstone brand faucet, you may have additional parts requirements, so make sure to research appropriately.
Additional ancillary parts that can help make the most of your hot water dispenser include a filter kit that helps improve the taste of tap water and can also help extend the life of your machine because of the scale inhibitor – also consider a feed water supply adapter, a shut-off valve and a union-tee fitting if you’d like to connect your dispenser to your refrigerator.
Consumers reported that this unit works reliably and offers tremendous value at an inexpensive price. In fact, some claim that this dispenser works as well and as dependably as machines costing twice as much! Like some other models, this one can spit and sputter a bit if the temperature is turned too high.
5. Anaheim AH-1300 Quick and Hot Instant Hot Water TankView Price
This dispenser features a 1300-watt tank that can deliver approximately 60 cups of 190-degree-Fahrenheit water per hour. In addition, it comes with automated heater protection, which can prevent tank burnout if you ever have a dry start. This model also features a 2.5 quart stainless steel tank and stylish brushed nickel faucets – one for hot water and a second for cold.
Unlike some other models, the Ready Hot RH 20-F 560 BN’s dispenser does not use a pressurized tank due to safety concerns. Unlike a conventional household water heater, this dispenser’s faucet valve is ideally positioned before the tank, which creates an “open vent,” preventing pressure from building inside the tank.
The Ready Hot RH 200-F 560 BN also comes with a cord including both a grounding pin and a grounding conductor– it must be used with a grounded and properly installed outlet in order to be as safe as possible and achieve peak performance.
Users describe this unit as functional, elegant, durable and easy to use, with simple and stress-free installation. Some users report that the machine can be a bit noisy and dispense water more slowly than they’d like, but overall it seems easy to use and inexpensive to maintain. In addition, some users have reported issues with thermostat settings that may need to be set higher over time in order to achieve the same temperature water. Overall, though, consumers are highly impressed with the thoughtful and user-friendly engineering of this model – particularly evident in the smoothness of features like the handles and the pivot faucet neck.
This particular model comes with a three-year warranty from the manufacturer.
6. Ready Hot RH-100-F560-BN Instant Hot Water Dispenser SystemView Price
This dispenser comes with a high capacity – able to dispense up to 60 cups of hot water per hour. It also features an automatic heater protection and a stylish chrome faucet. In addition, it comes with a dual lever to dispense both hot and cold water, and it features a 780W tank that can recover heat nearly instantly.
The Ready Hot 100 features an automated heater protection system that prevents the tank from burning out in case of a dry start. In addition, the system features a 2.5 quart stainless steel tank and comes standard with a one-year warranty.
When you purchase this model, you receive with your dispenser the following: a quick-connect fitting for a water inlet tube; the dispenser tank; a ¼” or 3/8” hose clamp and a connector/reducer adapter for ¼” or 3/8” center outlet tubing.
Unlike some other models, the Ready Hot 100’s dispenser does not use a pressurized tank due to safety concerns. Unlike a conventional household water heater, this dispenser’s faucet valve is ideally positioned before the tank, which creates an “open vent,” preventing pressure from building inside the tank.
Reviewers were especially drawn to the ability to dispense both hot and cold water, plus the relatively easy installation. Some reported that the water flow from this unit is a little faster as compared to others, which can be a benefit if you’re looking to fill larger containers. Overall, it’s been reported that the machine is quiet and the quality of both hot and cold water dispensed is top-notch. Any dissatisfaction with the unit stems typically from leaking associated with potentially faulty installation, along with some users reporting that the installation instructions can be difficult to understand.
7. Westbrass D271H-12 Velosah Single Handle Instant Hot Water Dispenser SystemView Price
With a modern and attractive bronze finish, a high-arc water spout and unparalleled sink clearance, this instant hot water dispenser gives you a lot of bang for your buck. The faucet handle features an automatic shutoff for increased safety– if you also add a filter between the tank and the water supply, you can further clean water before it heats, thus improving the taste. This unit is designed to accommodate such a filter and also includes a temperature control switch that can be used to manually turn off the dispenser if needed. In addition, the single-handle design provides the user with fast and simple water control.
This unit includes a hot water tank, plus all the mounting materials you need for a quick, convenient installation – if you’re a DIY person, make sure to note that the manufacturer recommends using a silicone seal for installation rather than plumber’s putty.
Also know that the tank for this unit cannot be modified for cold-water usage. It is designed for single-hole installation and comes with a limited product warranty.
Users particularly liked the easy installation and setup, plus the overall ease of use. While some reported dissatisfaction with low water pressure from time to time, most others report that it’s a stylish product with a nice aesthetic and works reliably and well over time. In addition, many reviewers report that installation directions can be confusing and that you’re best served by having a professional do the installation work rather than taking that on yourself.
How Instant Hot Water Dispensers Work
For all practical purposes, an instant hot water dispenser is a small, electric-powered tank that holds hot water at the ready for when you need it. Typically, you can access the hot water simply by turning the corresponding hot water tap at your sink. Water consistently flows into the tank through a small water line running from your sink’s main cold water source – so water is coming directly from your plumbing system. As it enters the bottom of the tank, the water is quickly heated by an electric element. The water then rises into a holding area in the top of the tank, where it remains hot until you need it. Every time you open the tap, hot water comes from the top of the tank, while fresh, cold water flows into the base to rebuild your hot water supply. This ensures that the water stays fresh, rather than growing stagnant as it sits in a collection tank for hours on end.
Most units feature a thermostat that will give you control over the temperature of the water – you can adjust if it’s too cool, or if it gets too hot and either begins to boil away or you worry for the safety of those using the unit. Some machines also come with filters and some offer a cold water chiller so that you can serve hot and cold water out of the same unit.
Instant hot water dispensers offer a wide variety of capacity – anywhere from 1/3 to ½ a gallon, and their accompanying heating elements range from 500 to 1500 watts. Some estimates indicate that a 750 watt version with a ½ gallon tank can deliver as much as 60 cups of hot water per hour. Through the beauty of technology, you can have hot water on-demand in an instant.
Benefits of an Instant Hot Water Dispenser
An instant hot water dispenser can be a useful and convenient addition to your kitchen, especially if you have a frequent need for near-boiling water. Using an instant hot water dispenser is more energy efficient than, for example, heating a kettle on the stove several times a day. Since the tank’s system never gets cold, there’s no need for the system to heat water from scratch every time like a kettle would.
Instant hot water dispensers also are aesthetically versatile – with today’s designs, shapes, colors and sizes, you’re likely to find something that blends stylishly with your kitchen décor. In addition, if you typically have high demand for hot water, you can find just about any tank capacity that can provide as little or as much water as you believe your home will need. Keep in mind, however, other than the InSinkErator HWT-F1000S, instant hot water dispensers don’t usually include water filtration. For that reason, a whole house water filter is a great compliment to these dispensers.
Furthermore, these units are extremely convenient – you don’t have to worry about waiting for a kettle to boil in order to make a cup of tea, a bowl of oatmeal or a batch of pasta. The hot water is instantly at your fingertips. You might think you’d be hard-pressed to come up with ways to use a hot water dispenser, but you might be surprised – instant hot water is ideal for thawing frozen food, cleaning without harsh chemicals, warming baby bottles and more, plus, of course, making your favorite hot drinks. In fact, many people who have installed instant hot water dispensers now report that they don’t know how they ever lived without one. You might also find that the stylish design of today’s instant hot water dispensers is a welcome addition to your overall kitchen décor.
For users with mobility issues, instant hot water dispensers can be especially helpful, reducing the inconvenience and danger associated with lifting kettles of hot water periodically throughout the day. Dispensing instantly from your sink allows users with a variety of mobility issues to efficiently and safely access hot water.
In addition to your home, instant hot water dispensers are tremendously beneficial in settings like school staff rooms and office break rooms where large numbers of people typically gather for food and beverage on break. Adding an instant hot water dispenser can help ensure you can meet the hot-water demands of the group quickly and easily.
One additional benefit of instant hot water dispensers is that they dramatically reduce limescale buildup within your water system. Especially if you live in an area served with hard water, it’s not uncommon to see a buildup of white, chalky residue in a kettle used to repeatedly heat water over time. This buildup is limescale, which can leach from the kettle into your hot drinks and foods over time. This will both affect the flavor and increase health risks associated with water contaminants. However, most hot water dispensers are equipped with limescale reduction filters, which help mitigate this issue.
Instant hot water dispensers are also reliable – most come with features that guarantee that the unit will never run dry, and dispensers will provide water at your desired temperature with features in place that help guarantee the safety of all users.
Instant Hot Water Dispenser Installation
Depending on the dispenser you choose, you may be able to install your instant hot water heater yourself, or you may need to work with a professional plumber on more complicated models. For example, many of the models reviewed here boast easy, DIY installation, plus the support of in-home service as long as the unit is covered under warranty.
If you decide to go the DIY route, there are a few things you should keep in mind in terms of installation.
First, you’ll need some type of opening in order to install the dispenser’s hot water spout – unless you have sufficient room already under your sink, in which case, a retrofit tank could be installed. This is especially easy if your sink currently features a spray nozzle. You can remove that nozzle and use the existing hole to house the hot water spout for your new dispenser. You may also want to work with a plumber to drill a hole in your sink if it doesn’t currently have the extra opening for a spray nozzle.
You can use a saddle valve to install your instant hot water dispenser. You simply attach it to a pipe using the accompanying screws and bracket, and then use the needle point to screw into the pipe, making a hole. When you screw the needle back out, water can then flow through the hole into the feed tube that can attach to the compression fitting.
The installation process is pretty straightforward – you’ll first make sure your water supply is turned off. Then, vertically mount the storage tank under your sink, install your faucet and connect the feed line from the faucet to the top of the dispenser tank. Once you’ve tapped into the main cold water with the saddle valve as described above, you’re ready to go. Usually your tank’s heating system will also come with a three-pronged plug that should connect to a 15-amp grounded receptacle under your sink.
If you prefer a less-invasive method of obtaining hot water on demand, one of the top water coolers we’ve reviewed may be a better option.
Maintenance and Cleaning
Because of the wide range of shapes and sizes available for instant hot water dispensers, make sure to consult your owner’s manual to determine any specific cleaning instructions appropriate for your unit.
Before you begin cleaning, make sure your machine is turned off and unplugged – and as a general rule, you’ll want to clean the outside first, and then move into cleaning the reservoir and other internal components. As an extra precaution, you may want to unplug your machine an hour or so before you begin cleaning in order to give it plenty of time to cool down.
Generally, try to work with a mild cleaning solution, like a small drop of dishwashing soap mixed with about four cups of water. You’ll want to avoid harsh cleaners, especially bleach, particularly if you’re dealing with a stainless steel unit. Saturate a cleaning cloth with your cleaning solution and rub down the outside of your dispenser and the faucet. Then use a dry towel to get everything completely dry so you don’t take a chance on mold growth. If your unit is stainless steel, make sure to rub a little stainless steel polish into it, following the direction of the grain, in order to keep it looking its best.
If your machine has a drip tray, make sure to take it out and clean it as well; simply drain any water in it and then wipe it down with the same gentle cleanser you used for the outside. If you can remove your reservoir for cleaning, that’s usually the best method; you can wash it in the sink with that same gentle cleanser, rinse with clean water and return to your dispenser.
From time to time, you also may need to use a descaler appropriate for your machine. Your instruction booklet may tell you specifically what you need; otherwise, you can always use a solution of half white vinegar and half water to descale. All you have to do is pour the solution into the tank, run water through and then rinse the reservoir.
Best Instant Hot Water Dispenser Buyer’s Guide
You’ll want to consider several items as you decide which instant hot water dispenser is right for you and your family, and we’ve pulled together some of the most common considerations for you here.
First, you should take stock of your instant hot water needs. For example, where do you want to use your machine? How much water will you need to dispense on a daily basis? How many users will need to access your dispenser? Will you need a version that dispenses both hot and cold water? How much space do you have to work with – and what kind of design aesthetic do you appreciate? All of these questions can help inform your ultimate choice of instant hot water dispenser for your home or office.
You should also definitely consider value and return on your investment. Instant hot water dispensers can be quite the investment, with some of the higher-end, more expensive models boasting special highlights like accompanying water chillers or water filters. If you purchase one of these systems, you’ll want to factor in the ongoing costs of replacement filters as well. And definitely think about electricity use – most users report a negligible impact on electric bills from using instant hot water dispensers, but keep in mind that those costs are largely dependent on the cost of electricity in your particular area. Several of the models reviewed here, from the InSinkErator Hot 150 to the Quick & Hot AH01300-C, allow you to quickly and inexpensively provide hot water for your family.
In general, a reliable and value-adding instant hot water dispenser for your home will display the following characteristics:
- Adjustable Thermostat – With the added benefit of a thermostat, you can adjust the level of the water temperature simply by turning a dial. This allows you to make sure the water doesn’t get too hot, especially if there are small children in your home who could burn themselves easily. Units like our top pick InSinkErator HWT F1000S include this feature.
- Side Water Gauge – This feature will allow you to always see the level of water remaining in the reservoir.
- Filter – Adding the feature of a filter allows you to improve the taste and odor quality of the hot water that’s being dispensed. The InSinkErator line offers several options for systems including filters.
- Locking Lid – This is not only convenient, but also makes the unit safer.
- Service Support – Many instant hot water dispensers will require service from time to time. Having service support from the manufacturer will make your life so much easier. InSinkErator, in particular, offers tremendous customer service and in-home support.
- Rubber Feet – Having feet made of rubber not only helps keep your hot water dispenser steady on a variety of different surfaces, but also provides an extra measure of safety.
- Sturdy, Reliable Tank Material – Stainless steel, featured in several of the models in the above instant hot water dispenser reviews, is likely your best option for tank material; it’s durable, stylish and long-lasting.
- A Pleasing Faucet Aesthetic – Most of this comes down to personal choice. Many of the dispensers you see reviewed here include a faucet in variety of styles. Choose the overall look and finish that best complement your décor, and also consider whether you need two faucets – one for hot water and a second for cold water. The Ready Hot dispensers reviewed here are known as particularly stylish.
If you’re still searching around for the right type of water dispenser or filter for your home, countertop water filters are also an excellent option and offer rather easy installation.
Summing It Up
One thing you’ll find is that most of the instant hot water dispensers on the market share a lot of the same characteristics – allowing you to choose based on personal preference, aesthetics, etc. At the end of the day, the best instant hot water dispenser is the one that meets your individual needs. You have a wide variety of options to choose from, and this guide to some of our favorites presented here can help give you a place to start as you research your choices.