As opposed to traditional tank water heaters that store a reserve of warm water, tankless water heaters heat incoming water as it passes through the unit. In this review, our team compares the best tankless water heaters on the market, answers common questions, and provides expert-endorsed tips to help you find an energy-efficient unit that can deliver instant hot water throughout your home.
Key Takeaways:
- Choose a tankless water heater brand that suits your specific needs and budget.
- Consider the power source of the tankless water heater (electric or gas) and its flow rate.
- Maintenance is essential to ensure the longevity and effectiveness of your tankless water heater.
- Top tankless water heater brands include Rinnai, Rheem, Stiebel Eltron, EcoSmart, and Bosch.
- Tankless water heaters offer energy efficiency, space-saving design, and continuous hot water supply.
Best Overall: Stiebel Eltron Electric Tankless Water Heater
We have named the Stiebel Eltron Electric Tankless Water Heater as the best overall tankless water heater brand. There are several reasons why we believe this model deserves this distinction. First and foremost, it boasts a high flow rate for an electric unit, delivering between 1.5 and 4.5 gallons per minute (GPM) of hot water. This ensures that you can enjoy a steady and consistent supply of hot water throughout your home.
Another key feature of the Stiebel Eltron Electric Tankless Water Heater is its intelligent self-modulating technology. This advanced technology allows the unit to adjust its energy consumption based on your hot water usage, resulting in ongoing energy savings. Additionally, the compact size of the unit makes it easy to install and saves valuable space in your home.
In terms of reliability, the Stiebel Eltron Electric Tankless Water Heater comes with a 7-year warranty against leaks. This provides peace of mind and ensures that you can enjoy the benefits of this high-quality unit for years to come. Overall, the Stiebel Eltron Electric Tankless Water Heater offers exceptional performance, energy efficiency, and durability, making it our top choice for the best overall tankless water heater brand.
Specifications
Model Flow Rate (GPM) Energy Source Warranty Stiebel Eltron Electric Tankless Water Heater 1.5-4.5 Electric 7 years (against leaks)
Best Whole-House: Rinnai Indoor Gas Tankless Hot Water Heater
When it comes to whole-house tankless water heaters, the Rinnai Indoor Gas Tankless Hot Water Heater stands out as the best option. This powerful unit utilizes natural gas instead of electricity, providing a higher flow rate and ensuring a constant supply of hot water throughout your home. With a flow rate of 7.5 gallons per minute (GPM), it is well-suited for medium- to large-sized households.
One of the advantages of the Rinnai Indoor Gas Tankless Hot Water Heater is its indoor installation. By being installed inside the house, it is protected from cold temperatures that could potentially affect its heating efficiency. This means that you can enjoy hot water even in colder climates. Additionally, its compact size allows for easy installation in tight spaces.
With its advanced technology and efficient design, the Rinnai Indoor Gas Tankless Hot Water Heater offers excellent performance and reliability. It is a top choice for homeowners who prioritize whole-house hot water supply and energy efficiency. When it comes to finding the best whole-house tankless water heater brand, Rinnai is at the top of the list.
Key Features Rinnai Indoor Gas Tankless Hot Water Heater Flow Rate 7.5 GPM Power Source Natural Gas Indoor Installation Yes Size Compact
Image:
https://www.youtube.com/watch?v=QI_kUmB_X94
Best Propane-Powered: Rinnai Outdoor Gas Tankless Hot Water Heater
When it comes to propane-powered tankless water heaters, our top pick is the Rinnai Outdoor Gas Tankless Hot Water Heater. This unit is perfect for homeowners who either don't have the space for indoor installation or prefer the convenience of an outdoor unit. With its lightweight design and easy installation process, it offers a practical solution for delivering hot water on demand.
The Rinnai Outdoor Gas Tankless Hot Water Heater is a powerful and efficient option for providing hot water to your home. Its propane-powered system ensures a consistent flow of hot water, making it suitable for medium to large households. With its impressive flow rate and advanced technology, you'll have hot water whenever you need it, without any interruptions.
In addition to its performance, the Rinnai Outdoor Gas Tankless Hot Water Heater offers excellent durability and reliability. Built to withstand harsh weather conditions, this unit is designed to last for years. Its compact and sleek design ensures that it won't be an eyesore in your outdoor space.
Key Features:
- Propane-powered for reliable and continuous hot water
- Lightweight and easy to install
- Durable construction for long-lasting performance
- Designed for outdoor installation
- Advanced technology for efficient water heating
With its exceptional performance, durability, and propane-powered efficiency, the Rinnai Outdoor Gas Tankless Hot Water Heater is our recommendation for the best propane-powered tankless water heater brand. Whether you're looking to upgrade your current water heating system or are building a new home, this unit is a reliable and efficient choice that will provide hot water whenever you need it.
Brand Power Source Installation Flow Rate Features Rinnai Outdoor Gas Tankless Hot Water Heater Propane Outdoor Variable - Lightweight and easy to install EcoSmart ECO 18 Electric Tankless Water Heater Electric Indoor 1.8-4.3 GPM - Digital display and temperature control Rheem Tankless Electric Water Heater Electric Indoor Variable - Compact design for easy installation under sink
Most Efficient: EcoSmart ECO 18 Electric Tankless Water Heater
When it comes to efficiency, the EcoSmart ECO 18 Electric Tankless Water Heater stands out as one of the best options on the market. With its medium capacity and flow rate between 1.8 and 4.3 gallons per minute (GPM), this tankless water heater delivers reliable and energy-efficient performance.
One of the standout features of the EcoSmart ECO 18 is its digital display and temperature control. This allows you to easily adjust the temperature of the water it produces in 1-degree increments between 80 and 140 degrees Fahrenheit. This level of precision ensures that you can always have water at the perfect temperature for your needs.
Not only does the EcoSmart ECO 18 excel in efficiency, but it also boasts a compact design that saves space in your home. This unit is perfect for small to medium-sized households, delivering hot water on demand without the need for a bulky storage tank. Plus, with its durable construction and high-quality materials, you can trust that this tankless water heater will provide reliable performance for years to come.
Feature Details Flow Rate 1.8 - 4.3 GPM Temperature Range 80 - 140 degrees Fahrenheit Capacity Medium Power Source Electric Size Compact
With its exceptional efficiency and advanced features, the EcoSmart ECO 18 Electric Tankless Water Heater is an excellent choice for homeowners looking to upgrade to a tankless system. Enjoy hot water on demand while reducing your energy consumption and saving valuable space in your home.
Best Tankless Water Heater for Small Households: EcoSmart ECO 11 Electric Tankless Water Heater
When it comes to finding the best tankless water heater for small households, our top pick is the EcoSmart ECO 11 Electric Tankless Water Heater. With its low flow rate of 1.3-3.1 GPM, this compact unit is perfect for small families or homes with one or two occupants. Despite its small size, it offers consistent performance and delivers water within just one degree of the temperature you select.
The EcoSmart ECO 11 Electric Tankless Water Heater is designed to provide efficient and instant hot water while saving space and energy. Its advanced self-modulating technology ensures that the unit only heats water when you need it, resulting in significant energy savings compared to traditional tank water heaters. Additionally, its compact design allows for easy installation in tight spaces, making it an ideal choice for smaller homes.
Equipped with a digital display and temperature control, the EcoSmart ECO 11 allows you to adjust the water temperature in 1-degree increments between 80 and 140 degrees Fahrenheit. This level of precision ensures that you can enjoy hot water at your desired temperature every time. Plus, the unit's durable and reliable construction ensures long-lasting performance, backed by EcoSmart's reputation as one of the top tankless water heater brands.
Key Features of the EcoSmart ECO 11 Electric Tankless Water Heater
- Low flow rate of 1.3-3.1 GPM, perfect for small households
- Compact design for easy installation and space-saving
- Digital display and temperature control for precise adjustments
- Energy-efficient self-modulating technology for reduced energy consumption
- Durable and reliable construction
Overall, if you're looking for a reliable and energy-efficient tankless water heater for your small household, the EcoSmart ECO 11 Electric Tankless Water Heater is an excellent choice. Its compact size, low flow rate, and advanced features make it the best option to provide hot water on-demand while saving space and energy.
Best Value: Rheem Tankless Electric Water Heater
When it comes to finding the best value tankless water heater brand, we have identified the Rheem Tankless Electric Water Heater as a top contender. This small corded electric water heater offers a combination of affordability, functionality, and durability that makes it an excellent choice for homeowners seeking a cost-effective solution for their hot water needs.
One of the standout features of the Rheem Tankless Electric Water Heater is its attractive and easy-to-read temperature display. With a control knob located underneath the display, adjusting the water temperature to your desired level is a breeze. The compact size of this unit also makes it convenient to install underneath a sink, saving valuable space in your home.
In addition to its user-friendly design, the Rheem Tankless Electric Water Heater is known for its reliable performance. It provides a consistent supply of hot water, ensuring that you never have to worry about running out during peak usage times. With Rheem's reputation for quality and durability, you can trust that this water heater will provide long-lasting efficiency and performance.
Why Choose the Rheem Tankless Electric Water Heater?
- Affordable price point
- Easy-to-read temperature display
- Compact size for space-saving installation
- Reliable performance and consistent hot water supply
- Rheem's reputation for quality and durability
Features Specifications Power Source Electric Flow Rate Varies based on model Capacity Varies based on model Installation Underneath sink Warranty Varies based on model
Overall, if you're looking for a tankless water heater that offers excellent value for your money, the Rheem Tankless Electric Water Heater is an outstanding choice. With its affordable price, user-friendly features, and reliable performance, it delivers on both quality and cost-effectiveness. Invest in the Rheem Tankless Electric Water Heater to enjoy a continuous supply of hot water without breaking the bank.
https://www.youtube.com/watch?v=GNQNrlkLAOc
Tankless Water Heater Buying Guide
When it comes to choosing a tankless water heater, there are several important factors to consider. To help you make an informed decision, we've put together this comprehensive buying guide. Whether you're looking for a gas or electric unit, we'll cover the key points you need to know.
Power Source
First, let's talk about the power source. Tankless water heaters can be either electric or gas-powered. Electric units connect to your home's electrical system and use a heating element to heat the water. Gas-powered units, on the other hand, use natural gas or propane to heat the water. Gas-powered heaters tend to be more efficient and can handle higher flow rates, making them ideal for larger households.
Flow Rate
The flow rate is another crucial factor to consider. It refers to the amount of hot water the unit can deliver per minute. It's important to choose a flow rate that matches your household's hot water demands. A higher flow rate is necessary for larger households or homes with multiple bathrooms and appliances that require hot water simultaneously.
Installation
Installing a tankless water heater requires careful consideration. Gas-powered units typically require professional installation and ventilation, while electric units are easier to install. It's important to consult with a professional to ensure the unit is installed correctly and meets all safety requirements.
Maintenance
Regular maintenance is essential to keep your tankless water heater running smoothly. Gas-powered units may require more frequent maintenance, including cleaning the burner and inspecting the venting system. Electric units generally require less maintenance but should still be checked periodically to ensure optimal performance.
Power Source Flow Rate Installation Maintenance Electric Lower flow rates suitable for smaller households Easier installation Less maintenance required Gas Higher flow rates suitable for larger households Professional installation required More frequent maintenance may be necessary
By considering these factors, you can choose a tankless water heater that meets your specific needs. Whether you prioritize energy efficiency, high flow rates, or ease of installation, there's a tankless water heater out there that's perfect for you.
Power Source
In our experience, tankless water heaters can be powered by either electricity or gas. Each power source has its own advantages and considerations to keep in mind when choosing the right unit for your needs. Let's take a closer look:
Electric:
In our findings, electric tankless water heaters are connected to your home's electrical system. As water passes through the unit, a sensor in the heating element activates the burner, and a thermostat regulates the temperature to your desired level. We have found that electric water heaters tend to be more affordable upfront compared to gas-powered models. However, they may be less efficient in heating the water that passes through the unit.
Gas:
Gas-powered tankless water heaters, on the other hand, are known for their efficiency in heating water. They are capable of heating enough water to simultaneously run multiple appliances. In our research, we have found that gas-powered units can be classified as non-condensing or condensing, based on the number of heat exchangers they have.
Overall, the choice between an electric or gas-powered tankless water heater depends on your specific needs, budget, and availability of power sources. It's essential to evaluate the pros and cons of each option to make an informed decision.
Table: Comparison of Electric and Gas-Powered Tankless Water Heaters
Factors Electric Tankless Water Heaters Gas-Powered Tankless Water Heaters Initial Cost Lower Higher Efficiency Less efficient More efficient Heating Capacity Lower Higher Power Source Electricity Natural Gas or Propane Installation Easier May require professional installation Environmental Impact No greenhouse gas emissions Produces greenhouse gas emissions
Condensing vs. Non-Condensing Units
In the world of tankless water heaters, there are two main types: condensing and non-condensing units. While both types serve the purpose of providing hot water on demand, there are key differences that set them apart.
Non-condensing: Non-condensing tankless water heaters have a single heat exchanger. As the water passes through the unit, the heat exchanger heats the water to the desired temperature before it is delivered to the faucets or appliances.
Condensing: On the other hand, condensing tankless water heaters utilize a second heat exchanger. This additional heat exchanger extracts heat from the exhaust gas, which is then used to preheat the incoming water. The preheated water then passes through the primary heat exchanger, resulting in further heating to reach the desired temperature.
The key advantage of condensing units lies in their ability to recover heat that would otherwise be lost in non-condensing units, making them more energy-efficient. Additionally, condensing units eliminate the need for expensive flue pipes and venting materials, as the extracted heat from the exhaust gas is utilized to further heat the water. This makes condensing units a cost-effective and environmentally-friendly choice in the long run.
Whether you opt for a condensing or non-condensing unit depends on your specific needs, budget, and setup. Both types have their own pros and cons, so it's important to weigh the factors carefully before making a decision.
Tankless Water Heater Cost
When considering the cost of a tankless water heater, it's important to understand that these units have a higher upfront price compared to conventional storage tank water heaters. However, the long-term savings and benefits they offer make them a worthwhile investment. The total cost of a tankless water heater will depend on its size and fuel type, with gas-powered units typically being more expensive than electric ones.
Gas-Powered Tankless Water Heaters: Gas-powered tankless water heaters generally cost between $1,000 and $1,500. They are more efficient and can provide hot water for multiple appliances simultaneously.
Electric Tankless Water Heaters: Electric tankless water heaters are more affordable, with prices ranging from $500 to $1,500. They may have a lower flow rate compared to gas-powered units but are still capable of delivering hot water on demand.
Type of Tankless Water Heater Cost Range Gas-Powered $1,000 - $1,500 Electric $500 - $1,500
In addition to the cost of the unit itself, professional installation is an important factor to consider. The installation cost can vary depending on the size of the tankless water heater and the complexity of your plumbing system. It's recommended to hire a professional to ensure proper installation and avoid any potential issues.
While tankless water heaters may have a higher initial cost, they offer significant long-term savings through improved energy efficiency and reduced utility bills. With proper maintenance and regular servicing, a tankless water heater can provide reliable and efficient hot water for years to come.
Types of Tankless Water Heaters
Tankless water heaters come in various types, each offering unique features and benefits. Understanding the different types can help you choose the right unit for your specific needs. Here are some of the commonly available types of tankless water heaters:
Gas-Powered Tankless Water Heaters
Gas-powered tankless water heaters are known for their fast heat-up time and high flow rates. They are typically fueled by natural gas or propane and provide a continuous supply of hot water. Gas-powered units are suitable for larger households and can handle multiple hot water demands simultaneously.
Electric Tankless Water Heaters
Electric tankless water heaters are powered by electricity and are a popular choice for smaller households or areas with limited gas availability. These units are more compact and easier to install compared to gas-powered ones. They provide instant hot water and are more energy-efficient, resulting in lower utility bills.
Indoor Tankless Water Heaters
Indoor tankless water heaters are designed to be installed indoors, typically in utility rooms or basements. These units require venting systems to remove exhaust gases and ensure proper operation. Indoor tankless water heaters are versatile and can be used for both residential and commercial applications.
https://www.youtube.com/watch?v=jIO47lSesW0
Outdoor Tankless Water Heaters
Outdoor tankless water heaters are installed outside the building, eliminating the need for venting systems. These units are durable and weather-resistant, making them ideal for regions with harsh climates. Outdoor tankless water heaters are often used in commercial settings or in homes where indoor installation is not feasible.
Type Advantages Considerations Gas-Powered - Fast heat-up time- High flow rates- Suitable for larger households - Requires access to natural gas or propane- Installation may require additional ventilation Electric - Compact and easy to install- Energy-efficient- Ideal for smaller households - May have lower flow rates compared to gas-powered units- Electrical capacity limitations Indoor - Versatile for residential and commercial use- Ventilation ensures safe operation - Requires space for installation- Additional venting may be required Outdoor - No need for venting systems- Durable and weather-resistant- Ideal for commercial settings - Limited protection from extreme weather conditions- Requires outdoor installation space
Maintenance
Proper maintenance is crucial to ensure the longevity and optimal performance of your tankless water heater. We recommend that you schedule regular servicing by a professional at least once a year. For those living in colder areas or areas with hard water, it is advisable to increase the frequency to twice a year.
Regular tankless water heater servicing can help prevent potential issues and ensure efficient operation. During maintenance, a professional technician will inspect the unit, clean any accumulated debris or mineral deposits, and check for any signs of wear or damage. They will also test the pressure and temperature settings to ensure they are within the recommended range.
Hiring a professional for tankless water heater maintenance is highly recommended, as they have the knowledge and expertise to identify and resolve any potential issues. They can also provide valuable advice on how to optimize the performance of your unit and extend its lifespan. Additionally, regular maintenance can help improve the energy efficiency of your tankless water heater, saving you money on energy bills in the long run.
Benefits of Regular Maintenance
Regular maintenance offers several benefits for your tankless water heater:
- Enhanced Performance: By keeping your unit clean and free from debris, regular maintenance ensures optimal performance and consistent delivery of hot water.
- Extended Lifespan: Proper maintenance can help identify and address minor issues early on, preventing them from escalating into major problems that could shorten the lifespan of your unit.
- Improved Energy Efficiency: A well-maintained tankless water heater operates more efficiently, reducing energy consumption and lowering your utility bills.
- Peace of Mind: Knowing that your tankless water heater is in good condition and functioning properly provides peace of mind and eliminates the worry of unexpected breakdowns or malfunctions.
Investing in regular maintenance for your tankless water heater is a wise decision that can save you money in the long run and ensure a continuous supply of hot water for your household.
Top Tankless Water Heater Brands
When it comes to choosing a tankless water heater, it's important to select a brand that offers reliable performance, energy efficiency, and durability. In this section, we will discuss some of the top tankless water heater brands available on the market today.
Rinnai
Rinnai is a well-known brand in the tankless water heater industry, offering a wide range of high-quality products. Their tankless water heaters are known for their efficiency, performance, and innovative features. Rinnai offers both gas and electric models, giving customers options to suit their specific needs. With advanced technology and a strong reputation, Rinnai is a top choice for many homeowners.
Rheem
Rheem is another reputable brand in the tankless water heater market. They offer a variety of electric tankless water heaters that are known for their compact design and energy efficiency. Rheem's products are designed to provide consistent hot water while minimizing energy consumption, helping homeowners save on their utility bills. With a focus on quality and performance, Rheem is a trusted brand for tankless water heaters.
Stiebel Eltron
Stiebel Eltron is a leading manufacturer of tankless water heaters. Their electric tankless water heaters are highly regarded for their reliability and durability. Stiebel Eltron offers innovative features such as self-modulating technology, which adjusts the energy consumption based on the hot water demand. This not only ensures energy efficiency but also provides a continuous supply of hot water. With a commitment to quality and customer satisfaction, Stiebel Eltron is a top brand in the industry.
EcoSmart
EcoSmart is known for its eco-friendly tankless water heaters. Their electric models are designed to be energy-efficient, reducing the overall carbon footprint of a household. EcoSmart's tankless water heaters are compact, making them ideal for small spaces. With a focus on sustainability and performance, EcoSmart is a top choice for environmentally-conscious consumers.
Bosch
Bosch is a trusted name in the home appliance industry, and their tankless water heaters are no exception. Bosch offers a range of gas and electric tankless water heaters that are designed to provide reliable hot water on demand. With features such as advanced temperature control and high flow rates, Bosch tankless water heaters deliver exceptional performance and efficiency. When it comes to quality and innovation, Bosch is a top contender.
Brand Key Features Rinnai Gas and electric models, advanced technology Rheem Compact design, energy efficiency Stiebel Eltron Self-modulating technology, durability EcoSmart Eco-friendly, compact design Bosch Gas and electric models, advanced temperature control
Conclusion
In conclusion, tankless water heaters offer significant advantages over traditional storage tank heaters. They are highly energy-efficient, saving both money and resources in the long run. With their compact design, they also save valuable space in your home. Unlike tank heaters, tankless water heaters provide a continuous supply of hot water, ensuring that you never run out during those busy mornings or long showers.
After extensive research, we have identified the top tankless water heater brands that consistently deliver quality performance. Stiebel Eltron, Rinnai, EcoSmart, and Rheem are among the top contenders in this market, offering a range of options for residential and commercial properties. These brands are known for their reliability and durability, providing a long-lasting solution for your hot water needs.
When choosing a tankless water heater, it is essential to consider factors such as power source, flow rate, and maintenance requirements. Electric water heaters are more affordable upfront, while gas-powered heaters offer higher efficiency. It's also worth noting that regular maintenance by a professional is recommended to ensure optimal performance and longevity.
Whether you're looking to upgrade your current water heater or planning for a new installation, investing in a tankless water heater is a wise choice. With their numerous benefits and the top brands available in the market, you can enjoy instant hot water, energy savings, and peace of mind for years to come.
FAQ
What is a tankless water heater?
A tankless water heater heats water as it passes through the unit, rather than storing a reserve of warm water like traditional tank water heaters.
