Best Instant Hot Water Heaters (2024 Update)
If you're looking for a hassle-free way to get hot water instantly, without wasting time or energy, then an instant hot water heater might be the perfect solution for you. Unlike traditional water heaters, which store and heat water in a tank, instant hot water heaters heat water on-demand, providing hot water whenever you need it, without the need for a storage tank.
Before investing in an instant hot water heater, there are a number of factors to consider. First, it's important to determine the size of the unit you need, based on the number of people in your household and typical hot water usage. You'll also want to consider the type of fuel the unit uses, as well as its energy efficiency and overall cost.
To help you make the best decision possible, ask yourself some key questions, such as, "How much hot water do I need?" "What is my budget for a new hot water heater?" and "Do I want a gas or electric unit?" Additionally, it can be helpful to read reviews and compare different brands and models to find the one that best suits your needs.
Overall, instant hot water heaters offer a convenient and efficient way to access hot water whenever you need it. By taking the time to carefully consider your options and choose the right unit for you, you can enjoy the benefits of instant hot water without breaking the bank.
10 Best Instant Hot Water Heaters
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It's ideal for providing instant hot water for indoor use using propane fuel.
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It is ideal for providing on-demand hot water to larger households or commercial spaces.
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The product is ideal for providing instant hot water in homes or small offices.
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This product is ideal for providing hot water quickly and efficiently for indoor use with natural gas.
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The product is ideal for quickly dispensing hot water in a contemporary kitchen setting.
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The product is ideal for providing hot water instantly from a faucet, saving time and energy.
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This product is ideal for providing hot water in a small to medium-sized home with electric power source.
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8
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The product is ideal for providing instant hot water and cold water from a dual lever faucet in a brushed nickel finish.
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9
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This product is ideal for providing hot water without a tank, suitable for small homes and apartments.
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10
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It is ideal for providing hot water on demand to a household or small commercial property.
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1. Rinnai Rl94ip Tankless Hot Water Heater, 9.8 Gpm, Propane, Indoor Installation
The Rinnai tankless hot water heater offers a unique Circ-Logic technology, designed to adapt to your daily hot water usage patterns. If you need a non-condensing, compact water heater that provides a continuous supply of hot water, the Rinnai propane water heater is exactly what you need. It can deliver up to 9.8 gallons of hot water per minute, which is enough for six fixtures to run simultaneously.
In terms of durability and reliability, the Rinnai propane water heater is an excellent choice. It comes with a 12-year warranty for residential use, and a 5-year warranty for commercial use. The heat exchanger, labor, and parts are covered for 5 years, 5 years, and 1 year, respectively. Moreover, the Rinnai's Controlr module allows for WiFi control, although it is not included in the package.
It is crucial to have a qualified technician install the Rinnai propane water heater to ensure proper installation and avoid any potential hazards. On their website, you can locate a Rinnai PRO technician in your area. The website also provides product guides, manuals, energy guides, warranty information, as well as videos and tables to assist you in choosing the best tankless water heater for your home. You can also check their Ground Water Temperature Map to see if the Rinnai propane water heater is optimal for your region.
2. Rinnai Rl75in Tankless Hot Water Heater, 7.5 Gpm, Natural Gas, Indoor Installation
The Rinnai Tankless Hot Water Heater with Circ-Logic technology is the perfect solution for those who don't want to run out of hot water. With recirculation patterns that match your habits, this non-condensing technology offers a reliable and efficient way to provide hot water to your home. For those who prefer a compact size, the Rinnai RE160iN model is available and offers the latest in non-condensing technology that speeds up service and installation.
This tankless gas water heater is only the size of a small suitcase and can fit in a wide variety of spaces, yet provides up to 7.5 gallons per minute, which is enough for up to five fixtures at once. It's smart, durable design includes a 12-, 5-, and 1-year residential guarantee and a 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively. For added convenience, the Controlr module allows for WiFi control (not included).
While installation of this tankless water heater is possible for those with experience, professional installation is recommended. Rinnai offers a "Find a Rinnai PRO" page on their website to locate a qualified technician in your area to install your tankless water heater.
To find the right tankless water heater for your home, Rinnai offers a variety of resources such as product guides, manuals, energy guide, warranty information, videos, and tables. Additionally, their Ground Water Temperature Map can help determine if this heater is optimal for your region.
3. Anaheim Ah-1300 Quick And Hot Instant Hot Water Tank
The Waste King Genuine Replacement Part Certified Contaminant Reduction is an essential component for your Waste King garbage disposal unit. This replacement part is of high quality and has been certified to reduce contaminants in your water supply effectively.
The Waste King Genuine Replacement Part is designed to fit seamlessly into your existing Waste King garbage disposal unit, ensuring hassle-free installation and optimal performance. It has been rigorously tested and certified to remove harmful contaminants such as lead, chlorine, and other impurities from your water supply.
With this replacement part, you can enjoy clean and safe drinking water for you and your family. It is made of durable and long-lasting materials that ensure it can withstand wear and tear, guaranteeing long-lasting performance.
The Waste King Genuine Replacement Part is easy to install, and you do not require any specialized skills or tools. It is a cost-effective solution to ensure your garbage disposal unit is performing at its best, and it is an excellent investment in the health and safety of your family.
4. Rinnai V65in Tankless Hot Water Heater, 6.5 Gpm, Natural Gas, Indoor Installation
Introducing the RE160iN, the latest non-condensing technology from Rinnai that offers a cleaner layout for faster installation and servicing. This tankless hot water heater is designed to only heat water when necessary, which helps conserve energy and reduce your utility bills.
The non-condensing design of this compact gas water heater allows it to fit in a small space, as it's only the size of a small suitcase. However, don't let its size fool you, as it can provide up to 6.5 gallons per minute (enough for 5 fixtures at once) to ensure that you never run out of hot water.
This water heater features enhanced scale detection that helps prevent serious long-term damage to the unit. Plus, it comes with a 15-year heat exchanger guarantee, a 5-year labor guarantee, and a 1-year parts guarantee for residential use. If you're interested in controlling the unit with WiFi, be sure to check out the Controlr module (available separately).
While the installation of this tankless water heater is manageable, Rinnai highly recommends seeking the services of a qualified technician. You can easily locate a professional in your area by visiting the Find a Rinnai PRO page on their website.
To ensure that you make an informed decision when purchasing a tankless water heater, Rinnai provides product guides, manuals, energy guides, warranty information, videos, and tables on their website. You can even check their Ground Water Temperature Map to see if this heater is optimal for your region.
5. In Sink Erator F-Gn1100mblk Contemporary Instant Hot Water Dispenser-Faucet Only, Matte Black
Introducing the sleek and contemporary instant hot water faucet with swivel spout and integrated lever for convenience. This hot faucet is designed to be used with the re-engineered InSinkErator HWT-F1000S Hot Water Tank and Filtration System, which is sold separately.
Constructed with solid brass, this instant hot water dispenser faucet is durable and long-lasting. The hot lever is designed to automatically shut off, ensuring safety and peace of mind. It is ideal for busy households and offices, allowing for instant preparation of hot coffee, tea, and other foods, as well as cleaning dishes, warming baby bottles, and more.
The InSinkErator instant hot water faucet comes with an exclusive 5-Year We Come to You In-Home Full Service Limited Warranty. This means that if your water dispenser needs service within the warranty period, the company will come to you, saving you time and hassle.
6. Insinkerator Invite Contour Instant Hot Water Dispenser System – Faucet & Tank, Chrome, H-Contour-Ss
The Instant Hot Water Dispenser is a game-changing addition to any kitchen. This system boasts a sleek chrome side faucet and a 2/3 gallon stainless steel tank with easy-to-adjust temperature control, delivering instant, near-boiling water in a snap.
What sets this dispenser apart is its original design and easy installation process. Featuring a twist top handle for effortless use, the dispenser only requires a single hole in your counter top and electricity under your sink. It's that easy!
Imagine never having to wait for water to boil again. The Instant Hot Water Dispenser sits on the edge of your kitchen sink, ready to dispense near-boiling water for cooking, cleaning, or preparing hot beverages. This saves time, space, and energy in your kitchen.
InSinkErator has been a leader in sink innovations since 1927, when they invented garbage disposals. They are now the world's largest manufacturer of garbage disposals and instant hot water dispensers for both home and commercial use. With their iconic appliances, they make it fast and easy to keep your kitchen clean, from meal prep to cleanup.
This package includes a chrome finish instant hot water dispenser and a 2/3 gallon stainless steel hot water tank. The dispenser housing is made of durable plastic, ensuring a long-lasting lifespan. Upgrade your kitchen with the Instant Hot Water Dispenser and experience faster, cleaner, and smarter meal prep and clean up.
7. Ecosmart Tankless Water Heater: Self-Modulating Technology.
The EcoSmart tankless electric water heater is the perfect solution for anyone searching for endless hot water supply without worrying about storage space or energy costs. With its advanced technology, this water heater ensures that you always have hot water on-demand, saving you money and space.
One of the significant advantages of this water heater is its ability to provide consistent hot water at the desired temperature, without ever running out. This is possible because of its continuous monitoring of water temperature and controlled flow rates, resulting in optimal performance within one degree of the selected temperature.
The EcoSmart tankless electric water heater is a space-saving option, as it is 90% smaller than traditional tank heaters. It can be installed on the wall or at the point of use, making it an ideal solution for small bathrooms, sinks, office breakrooms, and other low-flow applications. Its compact dimensions of 11.5 x 8 x 3.75 inches ensure that it takes up minimal space.
Another advantage of the EcoSmart tankless electric water heater is that it is energy-efficient. It is 99% thermal energy efficient, meaning it only heats water when it is needed. This is unlike tank heaters that maintain water temperature even when not being used, leading to higher energy costs.
The EcoSmart ECO 11 is a 13-kilowatt tankless electric water heater that is perfect for providing hot water for a bathroom, small sink, office breakroom, or other point-of-use or low-flow applications. It provides between 1.3 and 3.1 gallons-per-minute, depending on the inlet water temperature. To select the appropriate solution, it is advisable to refer to the sizing guide.
8. Hot & Cold Water Dispenser Faucet
The Ready Hot instant hot water dispenser with open vent dual lever faucet is the perfect addition to any kitchen for those who need immediate access to hot water. With the ability to dispense 60+ cups of near boiling water per hour, this dispenser is perfect for making instant coffee, tea, soup, oatmeal, or other household tasks.
The adjustable temperature range from 140F to 200F allows for fingertip adjustment with the manual dial. This feature makes it ideal for cooking as well, giving you hot water at your preferred temperature.
Designed to work with open vent faucets only, the Ready Hot water dispensers come with an open vented faucet. It is important to note that using any other type of faucet will void the warranty.
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, ensuring hot water is always available when you need it. The consistent heating performance makes this dispenser reliable and efficient.
The water heater includes a self-resetting thermal fuse that prevents tank burnout in case of accidental dry startup, helping protect and extend the longevity of the hot water dispenser.
9. Ecosmart Eco 27 Tankless Water Heater, Electric, 27-Kw – Quantity 1, 17 X 17 X 3.5
The EcoSmart ECO 27 is a tankless electric water heater that provides endless hot water on demand. With continuously monitored water temperature and controlled flow rates, it ensures efficiency and consistent performance within 1 degree of the selected temperature, so you’ll never run out of hot water when you need it.
This water heater is 90% smaller than traditional tank heaters, which means you can save space by installing it on the wall or at the point of use. The dimensions of the EcoSmart ECO 27 are 17 x 17 x 3.75 inches, making it an ideal solution for homeowners who need to save space.
The EcoSmart ECO 27 is also highly energy-efficient, with a thermal efficiency rating of 99%. Unlike traditional tank heaters that maintain water temperature even when not in use, this water heater only heats water when it’s called for. According to the Department of Energy, you can save up to 50% in water heating costs by switching to the EcoSmart ECO 27.
If you’re looking for a whole-home solution, the EcoSmart ECO 27 is ideal. It provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature, making it a great choice for homes with multiple bathrooms or large families. To ensure you select the proper solution, refer to the sizing guide.
The EcoSmart ECO 27 is UL-499 certified and ETL listed, and it comes with a limited lifetime warranty on electronics, exchanger, and element. It requires three 40 AMP double pole breakers and a 200 Amp recommended electrical panel. With this water heater, you can save up to 12 cubic feet of storage space and have complete control of hot water with digital temperature control in 1-degree increments.
10. Ecosmart Tankless Water Heater – Self Modulating Technology
The ECOSMART tankless water heater is a highly durable and easy-to-use product that is manufactured in China. With its 75 amps of power and activation flow of 0.3 GPM, this water heater delivers a flow rate of 3.51 gallons per minute at a 35-degree Fahrenheit rise. It is compatible with 2 X 40 AMP (DP) breakers and 2 X 8 AWG wire, making installation a breeze.
One of the most impressive features of this product is its lifetime warranty for residential use. With this warranty, customers can have peace of mind knowing that their investment is protected.
In addition to its durability and easy installation, this tankless water heater is also energy-efficient. By utilizing advanced self-modulating technology, users can save up to 60% on their water heating costs. This also means that customers will never run out of hot water, as the system is designed to provide hot water on demand.
Another great benefit of this product is its compact size. By eliminating the need for a bulky storage tank, customers can save up to 12 cubic feet of storage space.
Finally, users have complete control over the temperature of their hot water thanks to the digital temperature control feature. This feature allows for temperature adjustments in one-degree increments, ensuring that users always have the perfect temperature for their needs.
Best Instant Hot Water Heaters FAQs
Are there any safety concerns when using an instant hot water heater?
Like any other appliance that uses electricity or gas, instant hot water heaters can pose safety concerns if not used properly. However, if installed and maintained correctly, they are generally safe to use.
One of the main safety concerns with instant hot water heaters is the risk of burns from the hot water. The water that comes out of the heater can be extremely hot, so it's important to be cautious when using it and not to let children or pets near the unit.
Another safety concern is the risk of gas leaks or carbon monoxide poisoning if you have a gas-powered instant hot water heater. It's important to have a professional install and maintain your unit to ensure that it's vented correctly and that there are no leaks.
In summary, instant hot water heaters are generally safe to use as long as they are installed and maintained correctly. It's important to follow all safety guidelines and instructions provided by the manufacturer to ensure safe and efficient operation.
Can an instant hot water heater be used in a large household?
The answer to this question depends on the specific model and capacity of the instant hot water heater. Some larger models can provide enough hot water for a large household, while smaller models may only be suitable for smaller households or point-of-use applications. It is important to consider the flow rate and temperature rise of the unit, as well as the peak demand for hot water in the household, when selecting an instant hot water heater. Additionally, it may be necessary to install multiple units or a larger capacity unit to meet the demand of a large household. It is always recommended to consult with a professional plumber or HVAC technician to determine the best option for your specific needs.
How do I choose the best instant hot water heater for my home?
Choosing the best instant hot water heater for your home depends on several factors such as the size of your home, your hot water needs, and your budget. First, consider the size of your home and the number of people living in it. This will help you determine the flow rate and capacity of the water heater you need. Next, consider your hot water needs. Do you need hot water for multiple showers simultaneously or just for one appliance at a time? This will help you decide on the type of unit you need, whether it's a point-of-use or whole-house system.
You should also consider the energy efficiency of the unit, as this will affect your long-term energy costs. Look for a unit with a high energy efficiency rating, such as Energy Star certified models. Finally, consider your budget and look for a unit that fits within your price range.
It's important to do your research and read reviews from other customers to ensure you're choosing a reliable and durable unit that will meet your hot water needs for years to come.
How do I maintain and care for my instant hot water heater?
Maintaining and caring for your instant hot water heater is essential to ensure that it operates efficiently and lasts for a long time. Here are some tips to help you take care of your hot water heater:
1. Check the temperature and pressure relief valve regularly to ensure it is working correctly.
2. Flush the heater at least once a year to remove any sediment buildup that may affect the heater's efficiency.
3. Inspect the anode rod annually and replace if it is corroded or depleted.
4. Keep the heater area clean and free of debris.
5. Inspect the water supply lines regularly to ensure there are no leaks.
6. Check the thermostat and heating elements to ensure they are working correctly.
7. If you notice any unusual noises or changes in your hot water supply, call a professional plumber to inspect the heater.
By following these simple maintenance tips, you can ensure that your instant hot water heater runs efficiently and lasts for years to come.
How does an instant hot water heater work?
An instant hot water heater, also known as a tankless water heater, works by heating up water directly as it flows through the unit without the need for a storage tank. When you turn on a hot water tap, cold water travels through a pipe into the unit where it is heated by a gas burner or an electric element. The amount of heat applied to the water is controlled by the flow rate, meaning the faster the water flows, the less time it has to be heated, and the cooler it will be. Once the water is heated, it is delivered to the tap. Because there is no storage tank, the water heater does not have to constantly keep a large amount of water hot, resulting in energy savings. Instant hot water heaters are also more compact than traditional water heaters, making them ideal for small spaces. However, they may have limitations on the amount of hot water that can be produced at once, so it's important to consider your household's hot water needs before choosing a unit.
How much does it cost to install an instant hot water heater?
The cost of installing an instant hot water heater can vary depending on several factors. Some of these factors include the type and size of the unit, the location of installation, and the complexity of the installation process. On average, the cost of installing an instant hot water heater can range from $500 to $1,500 or more. However, it is important to note that this cost does not include the price of the unit itself, which can range from $200 to $1,000 or more.
To get a more accurate estimate of the cost of installing an instant hot water heater, it is best to consult with a licensed plumber or HVAC technician. They can assess your specific needs and provide you with a detailed estimate that takes into account all of the factors mentioned above. It is also important to consider the long-term savings that an instant hot water heater can provide in terms of energy efficiency and reduced utility bills.
What are the benefits of using an instant hot water heater?
An instant hot water heater, also known as a tankless water heater, offers several benefits compared to traditional tank-style water heaters. Firstly, it provides hot water on demand, which means that you don't have to wait for a storage tank to heat up before the water is ready for use. This feature saves time and ensures that you have hot water available anytime you need it.
Another benefit is that it saves energy and reduces your utility bills. Tankless water heaters only heat water as it's needed, which means that they use less energy compared to tank-style heaters that have to keep a large amount of water hot at all times.
Instant hot water heaters also last longer than traditional water heaters, with a lifespan of up to 20 years. They take up less space, making them a good option for small homes or apartments. They're also environmentally friendly and produce less greenhouse gas emissions compared to traditional water heaters.
Overall, an instant hot water heater is a reliable and cost-effective option for homeowners who want a constant supply of hot water and want to reduce their energy bills and carbon footprint.
What are the different types of instant hot water heaters available?
There are several types of instant hot water heaters available in the market to cater to different needs and preferences. The most popular types include tankless water heaters, electric water heaters, gas water heaters, point-of-use water heaters, and under sink water heaters.
Tankless water heaters are a popular option as they heat water on demand and do not require a storage tank. Electric water heaters are typically small and can be installed under the counter, while gas water heaters require a venting system for proper operation. Point-of-use water heaters are designed to provide hot water to a specific area, such as a shower or sink. Under sink water heaters are compact and installed under the sink to provide hot water directly to the faucet.
When choosing an instant hot water heater, it is important to consider factors such as the size of the household, available energy sources, and desired temperature range. Consulting a professional plumber or heating specialist can help you select the best option for your specific needs.
What are the top-rated instant hot water heaters on the market?
There are several top-rated instant hot water heaters available on the market. One of the most popular brands is the Rheem Performance Tankless Electric Water Heater. It is known for its energy efficiency and compact design, making it a great option for small homes or apartments. Another highly rated brand is the Ecosmart ECO 11 Electric Tankless Water Heater, which features a digital temperature control and can save up to 60% on water heating costs.
The Stiebel Eltron Tempra Plus Electric Tankless Water Heater is another top-rated option, with its advanced flow control technology that ensures a constant temperature output. Additionally, the Rinnai RL94iN Natural Gas Tankless Water Heater is a highly efficient and durable option that can provide hot water for multiple applications simultaneously.
Overall, the best instant hot water heater for you will depend on your specific needs and preferences. It's important to consider factors such as energy efficiency, flow rate, and size when selecting a unit that will best fit your household's hot water needs.
What features should I look for in an instant hot water heater?
When choosing an instant hot water heater, there are several features to consider that can impact its efficiency and performance. Here are some key features to keep in mind:
1. Flow rate: This refers to the amount of hot water the heater can produce per minute. Make sure to choose a unit with a flow rate that meets your household's hot water needs.
2. Energy efficiency: Look for a heater with a high energy efficiency rating to reduce your energy bills and carbon footprint.
3. Size: Consider the physical size of the heater and whether it will fit in the space where you want to install it.
4. Type of fuel: Instant hot water heaters can be powered by gas or electricity. Consider which fuel type is most convenient and cost-effective for your household.
5. Safety features: Look for a heater with features like a pressure relief valve, automatic shut-off, and a temperature control to ensure safe operation.
6. Installation requirements: Some instant hot water heaters require professional installation, while others can be installed by homeowners. Make sure to choose a unit that aligns with your installation capabilities.
Overall, it's important to choose a high-quality instant hot water heater that meets your household's hot water needs and has features that align with your preferences and priorities.
