The Best Tankless Water Heaters
A reliable supply of hot water is essential for every home, making daily routines more comfortable and efficient.
Traditional water heaters with bulky tanks are becoming a thing of the past, replaced by sleek, energy-efficient tankless water heaters.
These modern devices ensure you have hot water whenever you need it, without waiting. In this article, we’ll guide you through the best tankless water heaters available, highlighting their benefits and helping you find the perfect fit for your home.
Best Energy Efficiency
Dimensions | 8″W x 11.5″H |
Maximum flow rate | 3.1 Gallons Per Minute |
Capacity | 2 Gallons |
Power source | AC_DC |
Material | Plastic |
Heat output | 11 Kilowatts |
- you have limited space.
- you require temperature consistency.
- you want to save on energy costs.
- you need a unit for low-flow applications.
- you need on-demand hot water.
- you value a small form factor.
- you need up to 3.1 GPM flow rate.
- you require controlled flow rates.
- you need hot water for multiple bathrooms.
- you require high-flow applications.
- you lack sufficient amperage.
- you need a large water heater.
- you dislike wall-mounted units.
- you have ample installation space.
The EcoSmart electric tankless water heater provides endless on-demand hot water. Its advanced technology ensures you never run out of hot water, making it ideal for small sinks, bathrooms, and office breakrooms.
This unit continuously monitors water temperature and controls flow rates, maintaining consistent performance within 1 degree of the selected temperature.
This tankless water heater is 90% smaller than traditional tank heaters, saving significant space. With dimensions of 11.5 x 8 x 3.75 inches, it can be installed on a wall or at the point of use.
This feature makes it a practical solution for areas with limited space. It provides between 1.3 and 3.1 gallons per minute, depending on the inlet water temperature.
Energy efficiency is a key benefit of the EcoSmart tankless water heater. It is 99% thermal energy efficient, heating water only when needed.
Many consider it the best tankless water heater for its compact size and energy savings.
This contrasts with tank heaters that maintain water temperature constantly, even when not in use, leading to higher energy consumption.
The EcoSmart ECO 11, with its 13-kilowatt capacity, is best for low-flow applications. It is suitable for providing hot water for a bathroom, small sink, or office breakroom.
This model ensures energy savings and space efficiency, making it one of the best tankless water heaters for small-scale hot water needs.
EcoSmart Electric Tankless Water Heater Reviews
- Easy installation: Customers think the installation process is straightforward and user-friendly.
- Energy efficiency: Users said it significantly reduces their energy bills.
- Water pressure issues: Users said low-flow fixtures might not activate the unit.
- Space-saving: Many appreciate its compact size, freeing up more space.
- Fluctuating temperatures: Some users experienced inconsistent water temperatures with low-flow applications.
- Quick heating: Many users like that it heats water quickly and on-demand.
- Noise: Customers think it can create noise interference with other electronic devices.
Best Compact Design
Dimensions | 14.5″W x 18.25″H |
Maximum flow rate | 4.4 Gallons Per Minute |
Capacity | 18 Gallons |
Power source | AC_DC |
Material | Stainless steel |
Heat output | 18 Kilowatts |
- you prefer LED digital displays.
- you want advanced self-modulation.
- you need a high flow rate.
- you want easy installation.
- you want accurate temperature adjustments.
- you need a compact water heater.
- you need hot water for multiple bathrooms.
- you dislike digital controls.
- you prefer non-electronic models.
- you need a larger unit.
- you dislike copper elements.
The Rheem tankless electric water heater offers precise temperature control with its external digital thermostatic control and LED display. This feature ensures an accuracy of +/- 1 degree, providing consistent hot water as needed.
The unit’s advanced self-modulation technology adjusts power to meet hot water demand, enhancing energy efficiency and performance.
The digital temperature display adds to the convenience, enabling precise adjustments and monitoring. It stands out as one of the best tankless water heaters due to its combination of advanced technology and user-friendly features.
Its self-modulating capability and high flow rate make it a reliable choice for consistent hot water supply. For those seeking efficiency and durability, this model is a strong contender in the market.
Overall, its precise temperature control, easy installation, and durable components position it as one of the best tankless water heaters available. Its advanced features cater to users looking for reliable and efficient hot water solutions.
Rheem Tankless Electric Water Heater Reviews
- Easy installation: Customers said it’s simple to set up, even for DIY projects.
- Energy savings: Users think it reduces energy bills significantly.
- Flow issues: Users said low-flow fixtures might not activate the heater.
- Consistent hot water: Many appreciate the steady supply of hot water.
- Error codes: Some users reported frequent error messages disrupting performance.
- Customer support: Customers appreciate the helpful and responsive technical support team.
Best Performance Reliability
Dimensions | 16.63″W x 14.5″H |
Maximum flow rate | N/A |
Capacity | N/A |
Power source | Hard wiring required |
Material | Copper |
Heat output | N/A |
- you need advanced flow control.
- you require noise-free operation.
- you want auto-modulation features.
- you need scalding prevention.
- you value eco-friendly units.
- you need vented units.
- you have limited electrical service.
- you need lower-wattage units.
This feature ensures constant comfort by maintaining the desired water temperature and reducing flow slightly if demand exceeds capacity. You won’t experience interruptions during hot showers with this unit.
The eco-friendly unit saves energy with auto-modulation and electronic water flow control, and the savings monitor shows your energy cost savings.
Operating this water heater is straightforward. An electronic switch activates the heater, which operates noise-free. It features a digital temperature display, preset temperature buttons, and memory settings. The interior solid copper heating system ensures efficient performance.
The Tempra 24 Plus model is 24kW, 240V, and requires a minimum recommended electric service of 150 A. It offers an output water temperature range of 68° to 140°F.
This model includes the option to set a maximum hot water temperature to 109°F, preventing the possibility of scalding in some installations.
Stiebel Eltron includes reliable warranties with their top-rated electric tankless water heaters. The Tempra 24 Plus comes with a 7-year leakage warranty and a 3-year parts warranty, ensuring long-term performance and reliability.
This model is a top contender for the best tankless water heater, combining advanced features and dependable service.
Overall, it stands out as one of the best tankless water heaters due to its efficient performance, space-saving design, and advanced technological features. It meets the needs of modern households looking for reliable and continuous hot water.
Stiebel Eltron Tankless Water Heater Reviews
- Easy installation: Customers think it’s simple to set up with clear instructions.
- Consistent hot water: Many appreciate the reliable and continuous hot water supply.
- High installation costs: Some customers think the electrical setup can be pricey.
- Energy savings: Users report significant reductions in energy bills.
- Space-saving: Customers like its compact design that frees up space.
- Error codes: Some users reported frequent error messages disrupting performance.
- High capacity: Users say it handles multiple showers simultaneously.
Best User-Friendly Interface
Dimensions | 11.14″W x 15.87″H |
Maximum flow rate | 2.3 Gallons Per Minute |
Capacity | N/A |
Power source | Corded electric |
Material | Aluminum |
Heat output | 14000 Watts |
- you want energy efficiency.
- you need endless hot water.
- you want a compact unit.
- you require safe operation.
- you prefer self-modulating heaters.
- you use multiple faucets.
- you have low amperage.
- you require constant preheating.
- you need a whole-house heater.
The ECOTOUCH tankless water heater delivers instant hot water with its powerful 14kW smart heating system. It ensures water temperatures of 120℉ or higher in seconds, eliminating the wait for preheating.
This model is perfect for small apartments, accommodating showers, sinks, dishwashers, and washing machines without running out of hot water. Self-modulation technology in this heater adjusts power input based on the current flow rate and temperature setting.
This feature prevents scalding and enhances energy efficiency, making it one of the best tankless water heaters for saving on electric charges. The unit boasts a remarkable energy efficiency of 98%.
Convenience is another highlight of this tankless water heater. It includes a digital display and touch control panel, simplifying temperature settings. The screen provides useful information about the heater’s status, ensuring users have a clear understanding of its operation.
The compact design, comparable to a shoebox, allows for versatile installation at the point of use, such as in kitchens, bathrooms, bars, schools, and salons.
Safety is paramount with this water heater. It features multiple protections, including leakage protection, overheating protection, and auto-stop. Each unit undergoes strict testing and is ETL listed, qualifying for UL.
The design separates water and electricity lines, reducing the risk of leakage and scale buildup and promising years of reliable performance.
Overall, this unit is compact and energy-efficient, making it a strong contender among the best tankless water heaters available. Its advanced features and safety measures provide reliable hot water for various applications, ensuring user satisfaction.
ECOTOUCH Electric Tankless Water Heater Reviews
- Consistent hot water: Many appreciate the steady supply of hot water without fluctuations.
- Space-saving: Customers like its compact design, freeing up storage space.
- Compatibility problems: Some reported issues with LED fixtures flickering.
- High flow rate: Users mentioned it handles multiple outlets well.
- Short lifespan: Customers think the unit may not last as long as expected.
- Effective heating: Users said it heats water quickly and efficiently.
- Error codes: Some users reported frequent error messages disrupting performance
Best Outdoor Durability
Dimensions | 13″W x 30″H |
Maximum flow rate | N/A |
Capacity | 5.3 Gallons |
Power source | Gas powered |
Material | N/A |
Heat output | 81 Kilowatts |
- you need endless hot water.
- you prefer energy efficiency.
- you want high water pressure.
- you have up to four appliances.
- you require compact design.
- you need a durable unit.
- you prefer gas heaters.
- you want scale detection.
- you value long-term warranty.
- you seek professional installation.
- you prefer electric heaters.
- you need simple DIY installation.
- you have low water demand.
- you need minimal maintenance.
- you lack space for installation.
The Rinnai V53DeP tankless hot water heater provides endless hot water throughout your home. Its compact and durable design fits seamlessly into any lifestyle.
This tankless heater is highly energy-efficient, heating water only when necessary. This feature makes it one of the best tankless water heaters for conserving energy.
The unit offers a high-performance hot water flow rate of up to 5.3 GPM. This ensures a powerful, constant stream capable of serving up to four appliances simultaneously.
Enhanced scale detection in the heater reduces the risk of serious, long-term damage. This makes it reliable and durable, promising optimal performance for years.
Professional installation is recommended to ensure optimal performance and longevity. Rinnai provides a Find a Pro page on their website to locate qualified technicians.
This heater is guaranteed to last, backed by a 10-year warranty for the heat exchanger, a 5-year warranty for labor, and a 1-year warranty for parts.
Users on Reddit have highly suggested this product for its efficiency and reliability. Its compact design saves space, making it ideal for various home settings. With its advanced features and high flow rate, it stands out as one of the best tankless water heaters available.
This tankless water heater offers exceptional efficiency, durability, and performance. With its capability to provide endless hot water and a high flow rate, it stands out as a top choice for contemporary households.
The positive feedback from users further underscores its reputation as a reliable and efficient water
Rinnai V53DeP Tankless Hot Water Heater Reviews
- Consistent hot water: Many appreciate the steady supply of hot water.
- High performance: Customers like that it handles multiple fixtures well.
- Installation parts needed: Customers mentioned the need for additional installation parts.
- Durable: Many found the unit reliable and long-lasting.
- Temperature issues: Some users experienced lower than expected water temperatures.
- Quiet operation: Users appreciate the quiet performance.
- Water pressure: Some users noted reduced water pressure at times.
Tankless Water Heaters Reviews
Tankless water heaters have garnered a variety of feedback from users. Most commonly, people appreciate the endless hot water supply. This feature is particularly beneficial for large families or households with high hot water demand.
Many users highlight energy efficiency as a significant benefit. Tankless water heaters heat water only when needed, reducing energy consumption and lowering utility bills. This efficiency is a huge selling point for environmentally conscious consumers and those looking to save on energy costs.
User reviews frequently mention the compact size of tankless water heaters. These units save space compared to traditional water heaters, making them ideal for smaller homes or apartments. This aspect has positively impacted users’ living spaces by freeing up storage areas.
Overall, users express satisfaction with their tankless water heaters. They appreciate the reliability and convenience of having on-demand hot water. The combination of energy savings, space efficiency, and continuous hot water supply makes these heaters a popular choice.
Patterns in tankless water heater reviews show a strong preference for these benefits, leading to high overall user satisfaction. Many consider them the best tankless water heaters available, reflecting positively on their performance and reliability.
When buying a tankless water heater, it’s essential to make an informed decision to ensure you choose the best unit for your needs. To ensure you select the best tankless water heater for your needs, consider the following factors:
Sizing and capacity: Determine the flow rate (GPM) and temperature rise needed. Calculate the total GPM for all appliances that will run simultaneously to ensure the heater meets peak demand.
Fuel type: Decide between gas and electric models. Gas heaters offer higher flow rates and cost-effective operation but may require venting. Electric models are easier to install but might need electrical upgrades and have lower flow rates.
Installation costs: Consider the total installation cost, including potential upgrades to gas lines or electrical systems. While tankless heaters have higher upfront costs, they save money long-term through energy efficiency.
Climate: Ensure the unit can handle the temperature rise needed for your region, especially in colder climates where incoming water temperature affects performance.
Maintenance: Regular maintenance is crucial to prevent scale buildup and ensure efficiency. Look for models with features like digital displays and built-in diagnostics for easy maintenance.
Special features: Modern units offer features like Wi-Fi compatibility, recirculation pumps to reduce wait time, and condensing technology for higher efficiency. Consider these based on your needs.
Converting to a tankless water heater can be worth it for many homeowners, particularly those looking for energy efficiency and space-saving solutions. Tankless water heaters provide hot water on demand without the need for a storage tank, leading to significant energy savings.
They are generally 24–34% more energy-efficient than traditional tank water heaters, according to the U.S. Department of Energy. This efficiency translates to cost savings over the long term, although the initial investment and installation costs are higher.
However, the benefits come with some drawbacks. The upfront costs for tankless water heaters, including installation, can be significantly higher than those for traditional water heaters, often ranging from $1,500 to $3,000 or more, depending on the complexity of the installation.
Additionally, these systems require regular maintenance, such as annual descaling, to prevent mineral buildup, which can be an added expense.
For those considering a tankless system, it’s important to evaluate their hot water needs accurately. If your household frequently uses large amounts of hot water simultaneously, you may need a more powerful unit or even multiple units to meet the demand efficiently.
The best tankless water heaters often come with higher efficiency ratings and longer lifespans, making them a good investment for long-term savings.
In conclusion, converting to tankless water heaters can be worth it if you prioritize energy efficiency and long-term cost savings. However, it’s essential to consider the higher initial costs and ongoing maintenance requirements.
Selecting the best tankless water heater that suits your household’s needs can maximize the benefits of this investment.
A tankless water heater should not be installed in certain locations to ensure safety and optimal performance. One critical location to avoid is any place that may expose the unit to freezing temperatures.
When the water inside the heater freezes, it can cause severe and irreversible damage, often not covered under warranties.
Therefore, installation in unheated garages, basements, or any outdoor areas without proper insulation should be avoided unless the heater has specific freeze protection features.
Additionally, placing a tankless water heater near combustible materials is highly unsafe. The heat exchanger within the unit generates significant heat to instantly warm the water, posing a fire risk if flammable items are nearby. For safety, it’s crucial to keep the unit away from areas where flammable substances like gasoline or paint are stored.
Another important consideration is the need for adequate ventilation. For gas-powered tankless water heaters, proper venting is essential to safely expel exhaust gasses and provide fresh air for combustion.
Installing these heaters in confined spaces without proper venting, such as small closets or tightly sealed enclosures, can lead to the dangerous buildup of toxic gasses like carbon monoxide.
Ensuring the heater is installed according to the manufacturer’s venting specifications is crucial.
Lastly, installing a tankless water heater far from the main points of use, such as bathrooms and kitchens, can lead to inefficiencies.
Long distances between the heater and the points of use can result in increased wait times for hot water and potential heat loss through the pipes. Therefore, it is advisable to install the unit as close as possible to high-demand areas to maximize efficiency.
In summary, while choosing the best tankless water heaters for your home, it’s essential to consider these installation guidelines to ensure safe and efficient operation. This will help you enjoy the benefits of continuous hot water supply without compromising safety or performance.
Yes, you can take a shower with a tankless water heater. These units heat water on demand, providing a continuous supply of hot water as long as there is adequate flow and capacity to meet the demand.
This makes them an excellent choice for showers, especially in smaller households or homes with moderate hot water needs.
One of the main advantages of using a tankless water heater is that it only heats water when needed, which can lead to significant energy savings compared to traditional tank heaters.
The best tankless water heater models are designed to be energy-efficient and compact, making them suitable for installation in various locations around the home, including bathrooms.
However, there are some considerations to keep in mind. Tankless water heaters can have a delay in delivering hot water, particularly if the unit is far from the shower.
Additionally, they may have limitations in flow rate, meaning they might struggle to supply enough hot water if multiple fixtures are used simultaneously.
This is something to consider when selecting the best tankless water heaters for your needs, ensuring it has the capacity to handle your household’s peak hot water usage.
In summary, while tankless water heaters are highly efficient and can provide endless hot water for showers, it is crucial to choose a model that matches your home’s hot water demand and installation requirements to ensure optimal performance.