Best Tankless Water Heaters: Top Picks for 2024
Looking to upgrade your water heating system? Our roundup of the best tankless water heaters offers energy-efficient solutions, endless hot water supply, and space-saving designs. Say goodbye to cold showers and hello to on-demand hot water with these top picks. From compact units ideal for small spaces to high-capacity models perfect for large households, we’ve got you covered. Whether you’re renovating your home or simply seeking an efficient water heating solution, scroll down for in-depth reviews of our top recommendations.
Key Takeaways
- Consider the specific needs of your household when choosing a tankless water heater model, such as the Wintemp for endless hot water or the Bosch Mini-Tank for compact spaces.
- Opt for energy-efficient options like the EcoSmart ECO 18 to save on utility bills while enjoying continuous hot water supply.
- Prioritize quality and durability by selecting reputable brands like Stiebel Eltron and Rheem for reliable performance and longevity.
- For natural gas setups, explore models like the Noritz NRC66DVNG and Takagi T-H3M-DV-N for efficient heating solutions.
- Explore electric tankless water heaters such as the GRS model or the Rinnai Ru160in for versatile installation options and consistent hot water delivery.
- Refer to the Buyer’s Guide section for additional tips and considerations when purchasing a tankless water heater.
Wintemp Tankless Water Heater Electric 8KW 240Volts, Endless On-Demand Hot Water, Self Regulating – Wigital Temperature Display WIFI Control WN08
If you’re looking for instant hot water at 114℉ within seconds, the Wintemp Tankless Water Heater is your go-to solution. This innovative unit ensures you never run out of hot water supply, meeting your hot water demands swiftly and efficiently.
The installation process is a breeze with its fixed setting method, making it a hassle-free addition to your home. The fire-retardant ABS casing adds an extra layer of safety and peace of mind to your heating system.
Equipped with modulation technology, this tankless water heater offers fast heating capabilities, providing you with the hot water you need in no time. The digital control panel allows for simple temperature control, ensuring your water temperature is just right for your needs.
With continuous hot water supply and convenient control features, the Wintemp Tankless Water Heater caters to all your hot water requirements effortlessly. Whether it’s adjusting the temperature settings or monitoring usage through the digital control panel, this unit offers a seamless user experience.
| Label/Spec | Feature |
|---|---|
| Brand | WINTEMP |
| Product Dimensions | 14″W x 9.7″H |
| Special Feature | Fire-retardant ABS casing |
| Color | Gray |
| Wattage | 8000 watts |
| Voltage | 240 Volts |
| Style | 8 KW |
| Mounting Type | Wall |
| Manufacturer | WINTEMP |
| Part Number | WN08 |
| Item Weight | 7.63 pounds |
| Country of Origin | China |
| Item model number | WN08 |
| Installation Method | Fixed setting |
| Item Package Quantity | 1 |
| Provides Instant Hot Water | Yes |
| Temperature at 114℉ | Within seconds |
| Remote WIFI Control | Yes |
| Access Requirements | 240 volts, dedicated circuit breaker, specific wire gauge |
| Safety Features | Overheat protection, dry-heating protection |
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5)
The Bosch Electric Mini-Tank Water Heater Tronic 3000 T with a 2.5-gallon capacity is a game-changer for those looking to fulfill their hot water needs efficiently and conveniently. This compact unit is designed for under-sink installation, making it perfect for tight spaces where a traditional tank water heater might not fit.
Featuring a fast recovery rate, this electric unit ensures you have hot water almost instantly, eliminating the frustrating long waits typically associated with old tank heaters. The premium glass-lined material guarantees durability and long-lasting quality, giving you peace of mind that your investment will last.
When it comes to energy efficiency, the Bosch Tronic 3000 T shines brightly. Its high energy efficiency not only provides you with a reliable hot water solution but also helps reduce energy consumption and lower your monthly energy bills. With its compact size and powerful output, this water heater is a reliable choice for any household looking to save space without compromising on performance.
One of the standout features of this unit is its ability to deliver consistent hot water at the desired temperature while maintaining adequate water pressure. Whether you need hot water for a quick shower or other daily tasks, this heater has got you covered.
| Label/Spec | Feature |
|---|---|
| Dimensions | 13.75″W x 13.75″H x 10.75″D Inches |
| Thermal efficiency | 98% |
| Amps | 12A |
| Volts (VAC) | 120 |
| Wattage | 1440 watts |
| Capacity | 2.5 Gallons |
| Mounting Type | Shelf, wall, or floor mounted |
| Installation Method | Plug into a 120-volt outlet |
| Fast Recovery Rate | Yes |
| Manufacturer | Bosch Thermotechnology |
| Country of Origin | N/A |
| Item Weight | N/A |
| Special Feature | Premium glass-lined material |
| Safety Features | N/A |
| Suitable For | Small homes, garages, offices, in-law suites |
| Hot Water Supply | Up to 2 sinks at a time |
| Maintenance | Lightweight and easy to maintain |
EcoSmart ECO 18 Electric Tankless Water Heater
The EcoSmart ECO 18 Electric Tankless Water Heater stands out for its remarkable ability to save up to 60% on water heating costs, thanks to its self-modulating technology. This innovative feature adjusts the energy consumption based on the hot water demand, ensuring efficient use of electricity and substantial savings on utility bills.
One of the key advantages of the EcoSmart ECO 18 is its highly durable construction and space-saving design. Made to last, this electric tankless water heater is built to withstand the test of time, providing reliable hot water for years to come. Its compact size makes it ideal for homes where space is limited, allowing for easy installation in tight spots without compromising on performance.
Equipped with digital temperature control, the EcoSmart ECO 18 offers convenience and ease of use. With just a few clicks, you can set your desired water temperature and enjoy a consistent flow of hot water whenever you need it. This user-friendly feature eliminates the hassle of manually adjusting settings and ensures a comfortable experience for every user.
In addition to its energy-saving benefits, the EcoSmart ECO 18 Electric Tankless Water Heater is designed to deliver reliable performance and consistent hot water supply. Whether you’re taking a shower, doing laundry, or washing dishes, this electric heater provides a steady stream of hot water without any fluctuations in temperature, ensuring a pleasant and uninterrupted experience.
| Label/Spec | Feature |
|---|---|
| Brand | EcoSmart |
| Product Dimensions | 14″W x 17″H |
| Special Feature | LED Display |
| Color | White |
| Wattage | 18000 watts |
| Voltage | 240 Volts |
| Heat Output | 18 Kilowatts |
| Amperage | 75 |
| Activation flow | 0.3 GPM |
| Flow Rate @ 35 F Rise | 3.51 gal (US)/min |
| Compatible Breakers | 2 X 40 AMP (DP) |
| Wire Gauge | 2 X 8 AWG |
| Manufactured | China |
| Save on Water Heating | Up to 60% |
| Run out of Hot Water | No |
| Storage Space Saved | Up to 12 cubic feet |
| Temperature Control | Digital, 1-degree increments |
Stiebel Eltron Tankless Water Heater
The Stiebel Eltron Tankless Water Heater stands out with its ability to provide a continuous flow of hot water on demand, ensuring you never run out of hot water during your showers or household tasks. This tankless model is designed to offer convenience and efficiency in heating water for your daily needs.
Equipped with an LED display, this water heater allows for easy monitoring of the temperature settings and operation status, putting you in control of your hot water supply. The user-friendly interface makes it simple to adjust the settings to suit your preferences, ensuring a comfortable experience every time you use hot water.
One of the key advantages of the Stiebel Eltron Tankless Water Heater is its space-saving design. Unlike traditional water heaters that take up significant room in your home, this tankless model can be mounted on the wall, freeing up valuable floor space. Its compact size makes it ideal for homes where space is limited, providing a practical solution for heating water efficiently.
In addition to its space-saving benefits, the Stiebel Eltron Tankless Water Heater is also eco-friendly. By heating water only when needed, it reduces standby energy losses that are common with traditional water heaters. This energy-efficient operation not only helps lower utility bills but also minimizes environmental impact by conserving energy resources.
Whether you’re looking to upgrade your current water heater or install a new one in your home, the Stiebel Eltron Tankless Water Heater offers a stylish and efficient solution for your hot water needs. With its sleek design and advanced features, this tankless water heater combines functionality with modern aesthetics to enhance your overall living experience.
| Label/Spec | Feature |
|---|---|
| Brand | Stiebel Eltron |
| Product Dimensions | 16.63″W x 14.5″H |
| Special Feature | LED Display |
| Color | White |
| Wattage | 19.2 KW |
| Voltage | 240 Volts |
| Style | Tempra 20 Trend (20 kW) |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Manufacturer | Stiebel Eltron |
| Part Number | 239215 |
| Item Weight | 16.1 pounds |
| Country of Origin | Germany |
| Item model number | 20 Trend |
| Installation Method | Fixed setting |
| Item Package Quantity | 1 |
| Provides Instant Hot Water | Yes |
| Easy Installation | Yes, with remote WIFI control for temperature adjustment |
| Requires Specific Setup | Yes, access to 240 volts, dedicated circuit breaker, specific wire gauge required |
| Safety Features | Overheat protection, dry-heating protection |
| Continuous Flow of Hot Water | Yes |
| Space-Saving Design | Yes, no venting required |
| Silent Operation | Yes |
| Warranties | 7-Year Leakage, 3-Year Parts |
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater
The Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater is a top choice for those seeking efficient hot water solutions. This unit boasts an LED display that allows for easy temperature monitoring, ensuring you always have the perfect water temperature at your fingertips.
With a heat output of 13 KW, this tankless water heater provides ample hot water for your residential needs. Whether you’re taking a shower, doing dishes, or running multiple appliances simultaneously, the Rheem RTEX-13 delivers consistent and reliable hot water on demand.
Installing the Rheem RTEX-13 is a breeze thanks to its compact design. It can be easily mounted on a wall, saving valuable floor space in your home. The unit’s sleek profile makes it an unobtrusive addition to any living space, blending seamlessly with your decor.
One standout feature of the Rheem RTEX-13 is its compatibility with a remote thermostat. This allows you to adjust the temperature settings from anywhere in your home, adding convenience and flexibility to your hot water usage. Say goodbye to constantly adjusting the temperature dial on the unit itself – with the remote thermostat, you can fine-tune your settings with ease.
In addition to its user-friendly features, the Rheem RTEX-13 is designed for durability and longevity. Constructed with high-quality materials and built to last, this tankless water heater is a reliable investment for your home’s hot water needs.
Experience the convenience and efficiency of the Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater. With its advanced features, easy installation, and reliable performance, this unit is sure to meet your hot water demands while enhancing your overall comfort at home.
| Label/Spec | Feature |
|---|---|
| Brand | Rheem |
| Product Dimensions | 8.25″W x 12.63″H |
| Special Feature | LED Display |
| Color | Gray |
| Wattage | 13 KW |
| Voltage | 240 Volts |
| Heat Output | 13 Kilowatts |
| Manufacturer | Rheem |
| Part Number | RTEX-13 |
| Item Weight | 0.01 ounces |
| Item model number | RTEX-13 |
| Is Discontinued By Manufacturer | No |
| Thickness | 1 Inches |
| Item Package Quantity | 1 |
| Included Components | Rheem RTEX-13 Residential Tankless Water Heater |
| Batteries Included? | No |
| Batteries Required? | No |
| External adjustable digital thermostatic control with LED display (+/1 degree accuracy) | Yes |
| Durable Copper immersion two heating elements, field Serviceable | Yes |
| Self-modulating power control | Yes |
| Simple installation – | Yes |
Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM – Natural Gas
When it comes to delivering a reliable hot water supply in your home, the Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater stands out with its impressive flow rate of up to 6.5 gallons per minute. This means you can enjoy a steady stream of hot water for various household tasks without worrying about running out.
The advanced heat exchanger design of this tankless water heater ensures efficiency in heating the water, allowing you to save on energy costs while still enjoying a consistent supply of hot water. Whether you’re filling up a large bathtub or running multiple appliances at once, this unit is designed to meet your hot water needs efficiently.
One standout feature of the Noritz NRC66DVNG is its wide array of venting options available for installation. This flexibility allows you to choose the most suitable venting setup for your home, whether it’s a direct vent, single vent, or concentric vent configuration. With the option for outdoor installation as well, you can optimize space indoors while still benefiting from the unit’s performance.
The silent noise level of this tankless water heater ensures that your daily activities are not disrupted by loud operating sounds. You can enjoy a peaceful environment while the unit efficiently heats your water in the background without causing any disturbances.
| Label/Spec | Feature |
|---|---|
| Brand | Noritz |
| Product Dimensions | 13.8″W x 23.6″H |
| Special Feature | Vented |
| Color | White |
| Maximum Flow Rate | 6.6 GPM |
| Energy Efficiency | High Efficiency |
| Venting Options | Various adapters and terminations |
| Remote Control | Yes |
| Warranty Description | 12 Year Heat Exchanger, 5 Year Parts, 1 Year Labor |
Takagi T-H3M-DV-N Condensing Direct Vent Tankless Water Heater, Natural Gas
The Takagi T-H3M-DV-N Condensing Direct Vent Tankless Water Heater stands out with its high heat output and energy efficiency. This natural gas heater is designed for indoor installation, making it perfect for residential use.
Featuring inlet and outlet thermistors, this tankless water heater ensures constant temperature monitoring, providing you with a consistent supply of hot water. The unit is Energy Star certified, highlighting its energy-saving capabilities that can help reduce utility costs over time.
One of the key advantages of this model is its compact design, allowing for easy installation in various indoor settings. The heater’s condensing technology maximizes energy efficiency by capturing heat from exhaust gases, further enhancing its performance.
For those looking for a reliable and efficient heating solution, the Takagi T-H3M-DV-N offers a high heat output while maintaining a compact size that fits well in most spaces. The inclusion of a gas leak detection system adds an extra layer of safety and peace of mind for users.
With its advanced features like temperature rise and ventilation options, this tankless water heater provides customizable settings to meet your specific heating needs. The direct vent design ensures proper venting of exhaust gases, contributing to a safer indoor environment.
| Label/Spec | Feature |
|---|---|
| Brand | Takagi |
| Color | White |
| Voltage | 120 Volts |
| Maximum Flow Rate | 6.6 Gallons Per Minute |
| Style | Indoor Installation |
| Manufacturer | Takagi |
| Part Number | T-H3M-DV-N |
| Item Weight | 44 pounds |
| Product Dimensions | 17.75 x 13.12 x 29.5 inches |
| Item model number | TH3MDVNG |
| Certification | Energy Star |
| Included Components | Rough Plumbing, Water Heaters, water-heaters |
| Inlet, outlet thermistors | Constant temperature monitoring |
| Gas Inputs | 120,000 BTU |
| Manufactured | Japan |
| Safety Features | Air-Fuel Ratio Sensor, Exhaust & Water Temperature Safety |
GRS Tankless Water Heater Electric
The GRS Tankless Water Heater Electric is a game-changer when it comes to saving on energy bills. With this innovative water heater, you can save up to 50% on your monthly energy costs, making it an excellent choice for eco-conscious consumers looking to reduce their carbon footprint and utility expenses.
One of the standout features of the GRS Tankless Water Heater Electric is its advanced safety functions. This unit comes equipped with a child lock function, providing peace of mind for families with young children. The child lock feature ensures that little ones cannot accidentally adjust the temperature or settings, preventing any potential safety hazards.
Moreover, the GRS Tankless Water Heater Electric offers the convenience of on-demand hot water 24/7. Say goodbye to waiting for the water to heat up in a traditional tank-style water heater. With this tankless option, you have access to hot water whenever you need it, whether it’s for a relaxing bath after a long day or washing dishes in the kitchen.
Installing the GRS Tankless Water Heater Electric in your home not only saves you money but also contributes to a more sustainable lifestyle. By heating water only when needed, this unit reduces energy waste and minimizes environmental impact. Its compact design takes up less space compared to bulky traditional water heaters, giving you more flexibility in placement options.
| Label/Spec | Feature |
|---|---|
| Wattage | 13 KW |
| Product Dimensions | 9.68″W x 14.09″H |
| Color | Gray |
| Energy Efficiency | Yes |
| Mounting Type | Wall |
| Safety Features | Overheat protection, Child lock function, Dry heating protection, Grounding protection |
| On-Demand Hot Water | Yes |
| Energy Savings | Up to 50% |
| Installation | Easy |
| Suitable For | Showers, kitchen use, whole house water heating |
| Manufacturer | GRS |
| Item Weight | 11.09 pounds |
| Country of Origin | USA |
| ASIN | B0C3577L54 |
Rinnai Ru160in Condensing Tankless Hot Water Heater
The Rinnai Ru160in Condensing Tankless Hot Water Heater stands out as an Energy Star qualified unit with an impressive Uniform Energy Factor, making it a top choice for energy-efficient hot water usage. This condensing water heater offers not only superior performance but also advanced features to enhance user experience.
Equipped with Wifi monitoring capabilities through the Control-R mobile app, the Rinnai Ru160in allows you to conveniently control and monitor your hot water usage from your smartphone or tablet. This feature provides users with flexibility and peace of mind, ensuring that they always have access to hot water when needed.
One of the standout features of the Rinnai Ru160in is its extended warranty options, guaranteeing lasting performance and reliability. With the assurance of an extended warranty, users can trust in the durability and longevity of this tankless water heater, providing them with hot water for years to come without worrying about unexpected breakdowns or repairs.
The Energy Star qualification of the Rinnai Ru160in highlights its commitment to energy efficiency, helping users save on utility bills while reducing their environmental impact. By opting for a condensing tankless water heater like the Rinnai Ru160in, homeowners can enjoy hot water on demand without wasting energy or resources.
| Label/Spec | Feature |
|---|---|
| Maximum Flow Rate | 9 Gallons Per Minute |
| Energy Star qualified | Yes |
| Uniform Energy Factor | 0.97 |
| Professional installation | Recommended |
| Endless hot water flow | Circ-Logic for external pump pairing |
| Space-efficient design | Tankless |
| Optimal water pressure | Up to 9 GPM |
| Guaranteed to Last | 15-year residential for heat exchanger, 5-year for labor, 1-year for parts |
| Wifi monitoring available | Controlr module (not included) |
| Never run out of hot water | Yes |
| Smarter than a tank | Yes |
| Energy saving benefits | Yes |
| Manufacturer | Rinnai |
| Item Weight | 72.5 pounds |
| Country of Origin | China |
Camplux Electric Mini Tank Water Heater 2.5 Gallons (ME25)
The Camplux Electric Mini Tank Water Heater 2.5 Gallons (ME25) stands out with its built-in insulation foam that effectively reduces heat loss, ensuring energy efficiency for small homes. This feature helps to maintain water temperature without excessive energy consumption, making it an ideal choice for those looking to save on utility bills.
The glass-lined tank of the Camplux ME25 ensures a long service life by protecting the inner components from corrosion and rust. This durable construction adds to the reliability of this tankless water heater, providing peace of mind to users who want a product that will last for years to come.
Equipped with a thermostat control featuring three temperature level settings, the Camplux ME25 offers versatility in adjusting water temperature according to personal preferences or specific needs. This customization allows users to enjoy hot water at their desired temperature without any hassle.
The compact design of the Camplux ME25 makes it suitable for small homes where space is limited. Whether installed under the sink or in a cabinet, this mini tank water heater fits seamlessly into various settings without occupying too much space. Its size makes it a practical choice for apartments, tiny houses, RVs, or other compact living spaces.
| Label/Spec | Feature |
|---|---|
| Wattage | 1440 watts |
| Voltage | 120 Volts |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Mounting Type | Wall or floor mounted under sink/counter |
| Color | White |
| Special Feature | Lightweight, Overheat Protection, UL listed, 2.5 Gallons capacity, easy installation, Anti-Freezing Protection |
| Dimensions | 11.8″ W x 14.5″ H x 10.4″ D |
| Insulation | Built-in insulation foam |
| Tank Material | Glass-lined |
| Temperature Control | 3 level settings (50°F to 149°F) |
| Warranty | 3-year Limited for tank, 2-year for parts |
| Tech Support | 24-hour customer service |
Best Tankless Water Heaters Buyer’s Guide
When considering the best tankless water heater for your home, one standout option is the EcoSmart ECO 18 Electric Tankless Water Heater. This unit offers a compact design and powerful performance, making it an excellent choice for households looking to save space without compromising on hot water supply.
Factors to Consider When Choosing a Best Tankless Water Heater
Before making a purchase, it’s essential to consider factors such as the size of your household, the desired flow rate, and the energy efficiency of the unit. The EcoSmart ECO 18 is designed to provide continuous hot water on demand, making it suitable for medium to smaller households with up to two bathrooms.
Installation Requirements and Compatibility
The EcoSmart ECO 18 requires professional installation to ensure proper setup and safety. It operates on electricity, so ensuring compatibility with your home’s electrical system is crucial. This unit features a sleek and compact design that can easily fit into tight spaces, ideal for homes with limited room for a traditional water heater.
Tips for Maximizing Energy Efficiency and Cost Savings
To maximize energy efficiency and cost savings with the EcoSmart ECO 18, consider setting the temperature to an optimal level based on your household’s needs. Insulating hot water pipes can help reduce heat loss during distribution. Regular maintenance, such as descaling the unit as recommended by the manufacturer, can also improve longevity and performance.
Final Remarks
You have now explored a range of tankless water heaters, each offering unique features to cater to your specific hot water needs. From compact designs like the Bosch Electric Mini-Tank Water Heater to high-efficiency options like the EcoSmart ECO 18 Electric Tankless Water Heater, you have a variety of choices to consider based on your household requirements. Remember to prioritize energy efficiency, flow rate, and installation convenience when making your decision.
Make sure to assess your hot water consumption patterns and space availability before selecting the best tankless water heater for your home. Whether you opt for a gas or electric model, prioritize safety, performance, and durability. With the right choice, you can enjoy endless hot water while reducing energy costs and contributing to a more sustainable environment.
Tankless Water Heaters Frequently Asked Questions
What are the key safety features to consider when choosing a tankless water heater?
Tankless water heaters typically come with safety features like overheat protection, dry-heating protection, and child lock functions. These ensure safe operation and prevent accidents in your home.
How can I save on energy bills by using a tankless water heater?
Tankless water heaters are energy-efficient and can save you up to 60% on water heating costs compared to traditional tanks. Their on-demand heating system only uses energy when hot water is needed, reducing standby losses.
Which tankless water heater is suitable for small spaces like apartments or offices?
For compact spaces, consider the Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) or the Camplux Electric Mini Tank Water Heater 2.5 Gallons (ME25). These units offer hot water convenience without taking up much room.
What maintenance is required for a tankless water heater to ensure optimal performance?
Regular maintenance includes descaling the unit to remove mineral buildup, checking for leaks or blockages in the pipes, and ensuring proper ventilation. Following manufacturer’s guidelines and scheduling professional inspections can help maintain efficiency.
Can I install a tankless water heater myself, or do I need professional installation?
While some tankless models offer DIY installation options, it’s recommended to have a professional install your unit. Proper installation ensures safety compliance, optimal performance, and warranty coverage. Always consult the manufacturer’s guidelines for installation requirements.
How do I determine the right size of a tankless water heater for my household needs?
Calculate your peak hot water demand by considering the number of fixtures/appliances using hot water simultaneously. Choose a unit with a flow rate that meets or exceeds this demand to ensure an uninterrupted supply of hot water during peak usage times.
