Best Under Sink Hot Water Heater (2024 Update)
If you're looking for a way to have hot water available at your fingertips without taking up valuable counter space, an under sink hot water heater might be just what you need. These compact and energy-efficient units can provide instant hot water for washing dishes, making tea or coffee, and other daily tasks. However, before you rush out to buy one, there are a few important factors to consider.
Firstly, you need to determine the size and type of hot water heater that will meet your needs. Consider the amount of hot water you will require and the space available under your sink. Additionally, consider the energy efficiency ratings of each product, and whether it is compatible with your existing plumbing and electrical system.
When searching for the best under sink hot water heater, it's essential to consider user reviews. Previous purchasers of such products can provide unbiased insights into the effectiveness, durability, and ease of installation of various options. You can also consider the brand's reputation for producing high-quality hot water heater products.
If you're still unsure which under sink hot water heater is right for you, ask yourself some questions. Do you want an electric or gas-powered unit? How much space do you have under your sink? What is your budget for the purchase and installation? By answering these questions, you'll be better informed to make an informed decision and select the best hot water heater for your needs.
10 Best Under Sink Hot Water Heater
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Ideal for providing hot water under the kitchen sink; compact size, 4-gallon capacity, and plug-in installation.
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Ideal for providing instant hot water in home kitchens and washing areas with a wall mounted, space-saving design.
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3
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Ideal for providing instant hot water in small spaces such as RVs, kitchens, and compact point-of-use areas.
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4
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The product is ideal for providing instant hot water in small spaces such as shelves, under sinks, walls or floors.
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5
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The product is ideal for dispensing instant hot and cold water from a manual dial dual lever faucet.
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6
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This product is ideal for providing hot water in small spaces, such as RVs, trailers, and under sink cupboards.
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7
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This product is ideal for quickly dispensing hot water for beverages or recipes in a sleek and durable design.
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8
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This product is ideal for providing instant hot water under the kitchen sink with a capacity of 1.3 gallons.
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9
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The product is ideal for providing instant hot water dispensing in a sleek and durable stainless steel design.
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10
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Ideal for providing hot water in a small area or at a specific point of use, such as a sink or shower.
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1. Thermosink Mini Hot Water Heater By Thermoflow.
Introducing the 4 Gallon Point-of-Use Mini-Tank Water Heater, the perfect solution for hot water on demand! This mini-tank water heater has a 4 gallon capacity and is designed to fit conveniently under your sink, providing hot water right where you need it. The tank and heating element are made of durable stainless steel, ensuring long-lasting service and efficiency.
What's more, this mini-tank water heater has been upgraded with a Relief Valve, providing even greater safety and reliability. With its low stand-by loss power consumption and Advanced Thermostop Technology from Germany, this mini-tank water heater saves energy and stops heating or reheating automatically when the hot water reaches a high or low set temperature.
Thanks to its EPS Foaming Technology, this mini-tank water heater heats water quickly and offers better insulation, resulting in a fast recovery rate that eliminates long waits for hot water at your sink. Additionally, this mini-tank water heater is safe and reliable, featuring over-heat protection and an auto cut-off electricity feature if no hot water is coming out. It is also IPX24 water proof and comes with a 2.6ft plug in cord, making it suitable for use in the kitchen, bathroom, bar, school, hospital, office, and RV.
Before purchasing and installing this mini-tank water heater, please verify that this model is the right size for your hot water needs and electrical requirements. The dimensions of this mini-tank water heater are 18H x 12.2W x 11D inches, and it weighs 14 lbs. The water connections are 1/2 inch NPT, and the electrical requirements are 1.5 kW and 120 Volts. The max pressure is 150PSI, and the nominal current is 13A.
2. Mini Tankless Under Sink Water Heater.
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3. Endless Hot Water Heater For Small Spaces
Introducing the stainless steel mini hot water heater – a durable and long-lasting appliance that is perfect for your kitchen, bar, school, hospital, community, or RV. With its anti-leakage plug and multiple safety protection functions, you can enjoy hot water without any risk of scalding, leakage, or injury. The premium plastic shell is also corrosion resistant, ensuring that this mini hot water heater will serve you for many years to come.
This mini hot water heater is also equipped with a smart inverter for energy saving. Its automatic heat preservation and storage of hot water features help to conserve energy while ensuring that you have hot water right where you need it. The 2.5-gallon point-of-use mini-tank fits conveniently under your sink, and its thermal efficiency is an impressive 98%. The maximum temperature is 149℉, and the built-in smart chip heats up to the temperature you set and automatically insulates when heated to the specified temperature.
Using this mini hot water heater is also a breeze. It comes with an easy-to-operate knob temperature adjustment design that allows you to control the warmth of your water effortlessly. The vent valve, Tee pipeline, pipes, and other accessories are also complete for quick installation without additional expenses or preparing time of accessories.
Another great feature of this mini hot water heater is its fast recovery rate. It eliminates long waits for hot water at your sink, providing on-demand hot water at your every need. It supplies up to 2 sinks at a time and takes only 8-15 minutes to heat to your desired temperature.
This mini hot water heater has a compact design, making it easy to install and use. It can be shelf, wall, or floor mounted (Water inlet and outlet upward), and its dimensions are 13.0''L x11.4''W x10.6''H. It weighs only 9.5lbs and has a 1/2″NPT NPT. 1.5 kW, 110-220 volts. Plus, it comes with a one-year warranty and 24H customer service support. If you have any questions or concerns about the product, you can contact their customer service, which is available online 24 hours a day.
4. Hot Shot Mini Water Heater
Introducing the FVSTR Electric Mini-Tank Water Heater, designed to provide hot water where you need it. With a capacity of 2.5 gallons, this premium mini-tank water heater can store up to 2.5 gallons of water and supply up to 2 sinks at a time, ensuring that you always have hot water at your fingertips.
The glass-lined tank allows for fast recovery rates, eliminating long waits for hot water at your sink. Plus, the short distance hot water supply minimizes wait time for hot water, saving energy and reducing your bills. Whether used as a sole water heating source for a single sink or as a supplement to an existing heater located far from the sink, this mini-tank water heater's stand-by loss is minimal.
Installation is a breeze – simply plug the heater into a 120V outlet and connect it to the hot water outlet. After installation, open the water inlet valve and turn the tap to the hot water outlet. When water comes out, turn on the knob and turn it to the heating point. Turn the tap off and wait for 20-30 minutes for the first heating. When the heat preservation lamp is on, you can turn on the tap and use it.
The FVSTR Electric Mini-Tank Water Heater is also easy to adjust to your exact needs. It features 4 power levels (1-4) so you can easily tailor its performance to your family’s needs. Adjust the current from 10 Amps – 30 Amps resulting in 1.5 kW to 6.0 kW of power, which is ideal for any home application. Plus, you can easily adjust the temperature using the Water Flow Regulator included in the packaging.
Designed to be friendly to small spaces, the FVSTR Electric Mini-Tank Water Heater is lightweight and compact, and can be floor, shelf or wall-mounted, making it perfect for any small space. It also comes with a CSA listed temperature/pressure relief valve installed for added safety.
5. Instant-Flow Chrome Hot Water Faucet
The Ready Hot instant hot water dispenser with open vent dual lever faucet is a must-have for any household. This product can dispense 60+ cups of near boiling water per hour with an adjustable temperature range from 140F to 200F. It is perfect for cooking or making instant coffee, tea, soup, oatmeal, or any other household tasks that require hot water.
The Ready Hot water dispenser is designed to work with open vent faucets only. It is important to note that the use of any other type of faucet will void the warranty. The product features a fingertip adjustment manual dial that lets you select a temperature between 140F to 200F maximum. This allows for precise temperature control and ensures that you get the perfect temperature for your needs.
The 2.5-quart stainless steel under sink hot water tank comes with an energy-efficient 110-volt 1300-watt stainless steel heating element that allows for fast recovery time. This feature ensures that hot water is readily available when you need it. The heating element provides consistent heating performance, ensuring that the water is always at the desired temperature.
The Ready Hot instant hot water dispenser also includes automated tank protection. The water heater includes a self-resetting thermal fuse that prevents tank burnout in case of accidental dry startup. This feature helps protect and extend the longevity of the hot water dispenser, ensuring that it lasts for years to come.
6. Compact Rv Hot Water System With Stainless Hose
This 3.0 gallon point-of-use mini-tank hot water heater is an excellent addition to any household, community, RV, school, or hospital. Made of durable 304 stainless steel, this mini hot water heater is built to last. The anti-leakage plug and multiple safety protection functions ensure that you and your loved ones are protected from the risks of scalding, leakage, or other injuries. The premium plastic shell is also corrosion-resistant, making it an ideal choice for those living in humid environments.
Equipped with a smart inverter for energy-saving purposes, this hot water heater has a digital display and automatic heat preservation and storage of hot water. With a thermal efficiency of 98% and a maximum temperature of 167℉, this mini hot water heater is designed to heat up to the temperature you set and automatically insulate once it reaches the specified temperature. The built-in smart chip makes it easy to control the warmth of the water to your desired level.
Installation of this mini hot water heater is a breeze, thanks to its easy-to-operate knob temperature adjustment design. The vent valve, tee pipeline, pipes, and other accessories are complete, so there's no need to worry about additional expenses or preparing time for accessories. The fast recovery rate of this hot water heater eliminates long waits for hot water at your sink, ensuring that you get hot water on demand.
This mini hot water heater features a compact design, making it easy to install on a shelf, wall, or floor. The water inlet and outlet are upward-facing, and its dimensions are 14.6''L x 10.2''W x 11.4''H, making it lightweight at 8.6lbs. The 1/2" NPT NPT and 1.5 kW, 110-120 volts make it energy efficient as well. With a one-year warranty and 24-hour customer service support, you can feel confident that you're investing in a quality product.
The manufacturer is committed to constantly improving its products based on customer feedback. As a result, the cylinder thickness of this mini hot water heater has increased from 0.8mm to 1.2mm, making it even more durable. Additionally, the T-tube has been replaced with a new one, making installation even easier. If you have any questions about this product, the manufacturer's customer service is available 24 hours a day to assist you.
7. Hotshot: Insinkerator Instant Hot Water Dispenser.
The instant hot water dispenser is a must-have for any modern kitchen. This system features a compact, push-button activated side faucet and a 2/3 gallon stainless steel tank that delivers instant, near-boiling water. With easy-to-adjust temperature control, you can quickly and easily get hot water on demand for cooking, cleaning, or preparing hot beverages.
This stylish dispenser is designed to pair well with main kitchen faucets that feature modern or transitional design lines, making it a perfect addition to any kitchen. Installation is easy as it only requires a single hole in your counter top and electricity under your sink.
The instant hot water dispenser is an energy-efficient and space-saving solution for your kitchen. It sits on the edge of your kitchen sink, ready to dispense hot water when you need it. With a voltage of 115, this dispenser is faster, cleaner, and smarter than traditional methods of getting hot water.
InSinkErator, the world’s largest manufacturer of garbage disposals and instant hot water dispensers, has a history of innovation for the sink. They invented garbage disposals in 1927 and have continued to push the boundaries of what is possible in kitchen appliances. With this instant hot water dispenser, they have once again proven that they are at the forefront of kitchen technology.
8. Thermomate Mini Tank: Instant Hot Water Solution.
Introducing the Point of Use Mini Tank Water Heater – a reliable and efficient solution for those in need of instant hot water! With a thermal efficiency of up to 99%, this mini tank water heater guarantees no wait time for hot water, while also reducing standby loss.
Crafted with compact dimensions of 11.42" x 11.42" x 9.65", this hot water heater is designed to fit snugly under your sink and can be wall or floor mounted. It can be easily connected to a standard 120V outlet, with a nominal current of 12amps.
The thermostat of this mini tank water heater is equipped with 3 temperature level settings that range from 77°F to 140°F, and also features a high temperature limit protection mechanism along with a freeze mode that prevents the tank from freezing.
Rest assured that this mini tank water heater is made of premium quality glass-lined tank that provides excellent insulation, and an Incoloy 800 stainless steel heating element. It also comes with a T&P relief valve made in the USA, and is UL listed, ensuring a long service life.
9. Insinkerator Hot Water System: Quick & Stylish
The Satin Nickel finish instant hot water dispenser with Hot100 2/3 gallon stainless steel hot water tank is a top-of-the-line appliance that is perfect for those who want to enjoy instant, near-boiling water at the touch of a button. This dispenser can deliver up to 60 cups of water per hour, ensuring that you have enough hot water for your daily needs.
One of the best features of this hot water dispenser is its easy installation process. With tool-free tank connections and dry-start protection, you can set it up quickly and easily without any hassle. Plus, the dispenser comes with a 1-year in-home limited warranty, so you can enjoy peace of mind knowing that your investment is protected.
The dispenser also features an easy-to-adjust temperature control, allowing you to customize the temperature of the water to your liking. The spout height measures 6.25 inches, while the spout reach is 5.38 inches, making it the perfect size for any kitchen.
In addition to its practical features, the dispenser also boasts a sleek and stylish design that is sure to complement any kitchen decor. Its Satin Nickel finish adds a touch of elegance to your space, while the stainless steel hot water tank provides durability and longevity.
10. Ecotouch Electric Instant Hot Water Heater.
Looking for a reliable and efficient electric water heater that can provide you with a consistent supply of hot water? Look no further than this tankless water heater!
With a powerful 5.5KW heating system, this water heater can supply you with instant, consistent, and endless hot water at a temperature of 116℉ or higher. Say goodbye to lukewarm water and hello to a perfect companion for your sinks!
One of the best features of this tankless water heater is its smart self-adjustment system. This system adjusts the power input based on the flow rate and temperature setting in real-time, ensuring that you always get the ideal temperature without risking scalding. Plus, with an energy efficiency rating of 98%, you can save considerably on your electric charges.
Using this water heater is a breeze thanks to its digital display and touch control panel. Setting the temperature is an easy job, and you can let the smart unit do the rest. No more struggling to set the temperature with a mixer tap without any hint. The black model even comes with a remote control, making it even more convenient to use, especially when installed under a sink.
Safety and durability are top priorities with this electric water heater. Multiple protection devices have been applied, and every piece goes through strict tests to ensure 100% safety. Inner water and electricity lines are designed to run separately, preventing leakage or harm from scale build-up. Approval by ETL and qualifying for UL means you can expect outstanding performance for years to come.
This sleek tankless water heater is compact enough to be installed anywhere close to an outlet, avoiding energy waste. It can be mounted horizontally, vertically, or obliquely, making it ideal for use in the kitchen, bar, school, hospital, community, and even hair salons. Please ensure that it is the right size for you: 5.5kW@240V, dimensions 11" x 7.5" x 2.35", and pipes fittings: 1/2" NPT.
Best Under Sink Hot Water Heater FAQs
Can an under sink hot water heater be used with a dishwasher or other appliances?
Yes, an under sink hot water heater can be used with a dishwasher or other appliances, provided that the heater has enough capacity to meet the requirements of the appliance. Before installing an under sink hot water heater, it is important to check the manufacturer's specifications to ensure that the unit is suitable for use with the intended appliance.
When choosing an under sink hot water heater, it is important to consider the capacity of the unit. The capacity of the heater should be sufficient to meet the hot water needs of all appliances that will be connected to it. In addition, the heater should be installed in a location that is easily accessible and allows for easy maintenance and repair.
Overall, an under sink hot water heater can be a convenient and efficient way to provide hot water to appliances such as dishwashers. By choosing a high-quality unit and ensuring that it is properly installed and maintained, homeowners can enjoy the benefits of hot water on demand without having to rely on a central water heater.
How easy is it to install an under sink hot water heater?
Installing an under sink hot water heater can be a relatively simple process, but it ultimately depends on your level of plumbing knowledge and experience. It is important to note that working with electrical and plumbing systems can be dangerous, so if you are unsure of what you are doing, it is best to hire a professional plumber to install it for you.
Assuming you have some plumbing experience, the basic steps involved in installing an under sink hot water heater include turning off the water supply, draining the pipes, mounting the unit, connecting the water supply and hot water outlet, and finally, connecting the electrical supply. It is important to make sure that all connections are secure and leak-free before turning the water and electricity back on.
When choosing an under sink hot water heater, it is important to consider the size and capacity of the unit, as well as the power source and energy efficiency. It is also important to make sure that the unit is compatible with your plumbing and electrical systems.
Overall, installing an under sink hot water heater can be a DIY project, but it is important to proceed with caution and seek professional help if you are unsure of what you are doing.
How long does it take for an under sink hot water heater to heat up?
The length of time it takes for an under sink hot water heater to heat up depends on several factors, such as the size of the unit, the temperature of the incoming water, and the desired temperature setting. Generally, it takes about 10-15 minutes for the water in the tank to reach the desired temperature. However, if the incoming water is particularly cold, it may take longer for the unit to heat up.
It's important to note that some under sink hot water heaters have a "recovery time" which refers to the amount of time it takes for the unit to heat up a full tank of water after it has been depleted. This can vary greatly depending on the size and type of the unit.
To optimize the heating time of your under sink hot water heater, it's recommended to set the thermostat to the desired temperature and to insulate any exposed pipes to reduce heat loss. Additionally, regular maintenance and cleaning of the unit can help ensure efficient heating and prevent any potential issues.
What are the safety features of the best under sink hot water heaters?
The best under sink hot water heaters come with a range of safety features that ensure they operate safely and efficiently. One of the most important safety features is the automatic shut-off feature. This feature automatically switches off the heater if it overheats or if there is a power surge, preventing it from causing any damage or harm.
Another safety feature is the pressure relief valve, which releases steam or hot water if the pressure inside the tank becomes too high. This helps to prevent the tank from rupturing or exploding.
Additionally, most under sink hot water heaters come with a thermal cut-off feature that automatically shuts off the heater if the water temperature exceeds a certain level. This helps to prevent scalding and keeps you safe from burns.
Finally, some under sink hot water heaters also come with a leak detection system that alerts you if there is a leak in the tank. This helps to prevent water damage and ensures that the heater operates safely.
Overall, the safety features of the best under sink hot water heaters are designed to protect you, your home, and the heater itself, and they should be carefully considered when choosing a unit.
What are the top-rated under sink hot water heaters on the market?
There are several under sink hot water heaters available on the market, each with its own features and benefits. Some of the top-rated options include the Bosch Tronic 3000 T, the EcoSmart ECO 11, and the Stiebel Eltron Mini 3.
The Bosch Tronic 3000 T is a compact and efficient unit that delivers hot water quickly. It has a sleek design and can fit easily under most sinks. The EcoSmart ECO 11 is another popular choice, known for its energy efficiency and ability to provide hot water on demand. It has a digital temperature control and can heat up to 2 gallons per minute. The Stiebel Eltron Mini 3 is a reliable and durable option that is great for small spaces. It has a simple design and can provide hot water for handwashing or other small tasks.
Ultimately, the best under sink hot water heater for you will depend on your specific needs and preferences. It's important to consider factors such as size, energy efficiency, and cost when choosing a unit.
What is the best under sink hot water heater for small spaces?
When it comes to finding the best under sink hot water heater for small spaces, there are a few options that stand out. One popular choice is the Bosch Electric Mini-Tank Water Heater. This compact unit can be installed vertically or horizontally and has a 2.5-gallon capacity, making it perfect for small spaces. It also features a temperature range of 65-145 degrees Fahrenheit and a 98% thermal efficiency rating, ensuring efficient and reliable hot water.
Another great option is the EcoSmart ECO Mini Tank Water Heater. This unit has a 4-gallon capacity and can be installed either under the sink or in a remote location. It offers adjustable temperature settings and has a sleek, compact design that makes it ideal for small spaces.
Lastly, the Rheem Performance Tankless Electric Water Heater is another popular option for under sink installations. This unit offers endless hot water and has a compact design that saves space. It also features a digital temperature control and can be used in both residential and commercial applications.
Overall, the best under sink hot water heater for small spaces will depend on your specific needs and preferences. However, these three options are all great choices to consider.
What is the energy efficiency rating of the best under sink hot water heaters?
The energy efficiency rating of under sink hot water heaters can vary depending on the model and brand. However, the best under sink hot water heaters typically have an energy efficiency rating of at least 90%. This means that they are able to convert 90% of the energy they use into heat, which is then transferred to the water.
One of the most important factors in determining the energy efficiency of an under sink hot water heater is its insulation. The better the insulation, the less heat will be lost to the surrounding environment, and the more efficient the heater will be. Other factors that can affect energy efficiency include the type of heating element used (e.g. electric vs. gas), the size of the tank or heating element, and the temperature control settings.
It's important to choose an under sink hot water heater with a high energy efficiency rating in order to save money on energy bills and reduce your carbon footprint. Look for models with an Energy Star certification, which indicates that they meet strict energy efficiency standards set by the U.S. Environmental Protection Agency.
What is the maximum temperature output of the best under sink hot water heaters?
The maximum temperature output of the best under sink hot water heaters varies depending on the model and brand. However, most under sink water heaters have a maximum temperature output of around 140 degrees Fahrenheit (60 degrees Celsius). This temperature is considered safe for most household applications, such as hand-washing, dishwashing, and cleaning.
It's important to note that some under sink water heaters may have adjustable temperature settings, allowing you to customize the water temperature to your specific needs. However, it's crucial to follow the manufacturer's instructions and safety guidelines when adjusting the temperature to avoid the risk of scalding or other accidents.
Before purchasing an under sink water heater, it's essential to consider your household's hot water needs and the temperature requirements of your specific applications. Consulting with a professional plumber can also help you select the right under sink water heater for your home and ensure proper installation and safety.
What is the overall cost of the best under sink hot water heaters compared to traditional water heaters?
Under sink hot water heaters are a popular choice for those who want hot water quickly without the need to wait for it to travel from a central water heater. While the cost of under sink hot water heaters varies depending on the brand, size, and features, they are generally more expensive than traditional water heaters.
The cost of the best under sink hot water heaters can range from $150 to $500, whereas traditional water heaters can cost anywhere from $300 to $3,500 or more. However, it’s important to note that traditional water heaters are designed to provide hot water to an entire home, whereas under sink hot water heaters are only designed to provide hot water to one specific area.
Therefore, the cost of a traditional water heater may be more expensive upfront, but it’s an investment that can provide hot water to multiple areas of a home. On the other hand, under sink hot water heaters are a more cost-effective option for those who only need hot water in a specific area, such as a kitchen or bathroom sink. Ultimately, the cost of the best under sink hot water heaters compared to traditional water heaters depends on individual needs and preferences.
What is the warranty on the best under sink hot water heaters?
The warranty on the best under sink hot water heaters varies depending on the brand and model. Typically, warranties range from 1 to 5 years, with some manufacturers offering extended warranties for an additional fee. It's important to carefully review the warranty terms and conditions before purchasing an under sink hot water heater, as some warranties may only cover certain parts or defects. Additionally, it's important to properly maintain and install the unit in accordance with the manufacturer's instructions in order to ensure the warranty remains valid. Overall, investing in a high-quality under sink hot water heater with a solid warranty can provide peace of mind and reliable hot water for years to come.
