Welcome to our comprehensive guide on efficient tankless electric water heaters for whole house use. In this article, we will explore the benefits of these energy-saving appliances and provide valuable information to help you choose the right one for your home.
Tankless water heaters have revolutionized the way we experience hot water in our homes. Unlike traditional water heaters that store and continuously heat a large tank of water, tankless electric water heaters heat water on demand, providing instant hot water throughout your entire home.
In this guide, we will compare the top tankless electric water heaters on the market, highlighting their features, performance, and energy efficiency. We will also delve into important factors to consider when selecting a unit, such as power source, flow rate, and warranty.
Key Takeaways:
- Tankless electric water heaters provide instant hot water throughout the entire house.
- They are energy-saving appliances that only heat water when it is needed.
- Consider factors such as power source, flow rate, and warranty when choosing a tankless electric water heater.
- Top-rated tankless electric water heaters include models from Stiebel Eltron, Rinnai, EcoSmart, and Rheem.
- Proper installation and maintenance are essential for optimal performance and longevity.
The Best Tankless Electric Water Heaters
When it comes to choosing a tankless electric water heater for your home, you want to ensure you're investing in the best option available. We have carefully researched and compared various models on the market to bring you a selection of the top-rated tankless electric water heaters. These units offer energy efficiency, reliability, and the convenience of providing instant hot water throughout your home.
Stiebel Eltron Electric Tankless Water Heater
Our top pick is the Stiebel Eltron Electric Tankless Water Heater. With a high flow rate of 5 gallons per minute (GPM) and intelligent self-modulating technology, it delivers consistent hot water whenever you need it. This compact unit measures 4.6 x 16.6 x 14.5 inches, making it suitable for small spaces. Additionally, it comes with a 7-year warranty against leaks, ensuring peace of mind.
Rinnai Indoor Gas Tankless Hot Water Heater
If you prefer a gas-powered option, the Rinnai Indoor Gas Tankless Hot Water Heater is an excellent choice. It boasts a high flow rate of 7.5 GPM, making it ideal for whole-house use. This heater is designed to maintain heating efficiency even in cold temperatures, ensuring a consistent supply of hot water. It also offers enhanced scale detection, the ability to provide hot water to multiple appliances simultaneously, and a temperature lock function.
Rheem Tankless Electric Water Heater
For those looking for a budget-friendly option, the Rheem Tankless Electric Water Heater is the best value choice. With a flow rate of 1.95 GPM and a compact design, it can easily fit under a sink or in a small space. This unit provides hot water on demand and uses minimal electricity, resulting in cost savings.
Model Flow Rate (GPM) Dimensions (inches) Stiebel Eltron Electric 5 4.6 x 16.6 x 14.5 Rinnai Indoor Gas 7.5 N/A Rheem Electric 1.95 Depends on model
These are just a few of the top-rated tankless electric water heaters available. When making your decision, consider factors such as flow rate, power source, warranty, and space requirements. By selecting the best tankless electric water heater for your home, you can enjoy the benefits of continuous hot water while reducing energy consumption and costs.
Stiebel Eltron Electric Tankless Water Heater
The Stiebel Eltron Electric Tankless Water Heater is our top pick for its high flow rate, intelligent self-modulating technology, compact size, and 7-year warranty against leaks. With a flow rate of 5 GPM and a heat capacity of 24 kW, this tankless water heater provides instant hot water throughout the house. Its compact dimensions of 4.6 x 16.6 x 14.5 inches make it an ideal choice for small spaces.
What sets the Stiebel Eltron Electric Tankless Water Heater apart is its intelligent self-modulating technology. This innovative feature adjusts the power consumption based on the hot water demand, resulting in energy efficiency and cost savings. Additionally, the unit comes with a 7-year warranty against leaks, providing peace of mind for homeowners.
With its high flow rate and compact design, the Stiebel Eltron Electric Tankless Water Heater is an excellent choice for those looking for a reliable and efficient whole-house solution. Its self-modulating technology and long warranty make it a standout option in the market.
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Key Features of the Stiebel Eltron Electric Tankless Water Heater
- High flow rate of 5 GPM
- Intelligent self-modulating technology for energy efficiency
- Compact size of 4.6 x 16.6 x 14.5 inches
- 7-year warranty against leaks
Comparison Table: Stiebel Eltron Electric Tankless Water Heater vs. Competitors
Stiebel Eltron Electric Tankless Water Heater Rinnai Indoor Gas Tankless Hot Water Heater Rinnai Outdoor Gas Tankless Hot Water Heater EcoSmart ECO 18 Electric Tankless Water Heater EcoSmart ECO 11 Electric Tankless Water Heater Rheem Tankless Electric Water Heater Flow Rate 5 GPM 7.5 GPM 8.5 GPM 5 GPM 2 GPM 1.95 GPM Heat Capacity 24 kW N/A N/A 18 kW 13 kW 8 kW Dimensions 4.6 x 16.6 x 14.5 inches N/A N/A N/A N/A N/A Warranty 7 years (leaks) N/A N/A Lifetime N/A N/A
Rinnai Indoor Tankless Hot Water Heater
The Rinnai Indoor Tankless Hot Water Heater is a reliable and efficient option for whole-house use. With its innovative design and advanced features, it ensures a constant supply of hot water for your household needs. Let's take a closer look at the key features and benefits of this exceptional water heater.
Key Features:
- High Flow Rate: The Rinnai Indoor Tankless Hot Water Heater offers an impressive flow rate of 7.5 gallons per minute (GPM), ensuring an abundant supply of hot water for multiple appliances simultaneously.
- Cold Climate Technology: This unit is specifically designed to handle cold temperatures and maintain its heating efficiency. It is equipped with freeze protection technology, ensuring reliable performance even in harsh winter conditions.
- Enhanced Scale Detection: The Rinnai Indoor Tankless Hot Water Heater features an integrated scale detection system that helps prevent the buildup of mineral deposits, ensuring optimal performance and longevity.
- Temperature Lock Function: With the temperature lock function, you can set a specific temperature to avoid accidental changes, providing safety and peace of mind.
Overall, the Rinnai Indoor Tankless Hot Water Heater is a powerful and efficient solution for whole-house hot water needs. Its high flow rate, cold climate technology, enhanced scale detection, and temperature lock function make it a top choice for households that require a consistent and reliable supply of hot water. Invest in this tankless water heater to experience the convenience and energy savings it offers.
Table: Specifications
Flow Rate (GPM) Heat Capacity (kW) Dimensions (inches) Warranty 7.5 Varies based on model Varies based on model Varies based on model
Rinnai Outdoor Tankless Hot Water Heater
The Rinnai Outdoor Tankless Hot Water Heater is a propane-powered unit that is perfect for outdoor installation. It offers a lightweight design, weighing just 33 pounds, making it easy to mount on an exterior wall. This tankless water heater is equipped with Wi-Fi technology, allowing you to conveniently control and monitor its performance remotely.
With its impressive flow rate of up to 9.4 gallons per minute (GPM), the Rinnai Outdoor Tankless Hot Water Heater ensures a steady supply of hot water for multiple appliances or fixtures simultaneously. It is designed to provide hot water on demand, eliminating the need for a storage tank and reducing energy waste. This efficient unit is also approved by the South Coast Air Quality Management District, ensuring compliance with strict environmental standards.
"The Rinnai Outdoor Tankless Hot Water Heater combines performance and convenience, making it an excellent choice for outdoor installation. Its propane-powered operation provides a continuous supply of hot water, and the built-in Wi-Fi technology allows for easy control and monitoring. With its impressive flow rate, this tankless water heater can meet the hot water demands of even large households."
In addition to its powerful performance, the Rinnai Outdoor Tankless Hot Water Heater comes with a 10-year warranty on its heat exchanger, providing peace of mind and added durability. This unit is designed to withstand outdoor conditions and is built to last, ensuring reliable hot water for years to come.
Features Specifications Power Source Propane Flow Rate Up to 9.4 GPM Dimensions 20.5 x 14.04 x 9.26 inches Weight 33 pounds Warranty 10 years (heat exchanger)
With its efficient performance and innovative features, the Rinnai Outdoor Tankless Hot Water Heater is an excellent choice for households in need of a reliable and energy-efficient hot water solution. Its propane-powered operation and Wi-Fi compatibility make it a convenient option for outdoor installations. Whether you have a large family or enjoy hosting guests, this tankless water heater is designed to deliver consistent hot water on demand.
EcoSmart ECO 18 Electric Tankless Water Heater
The EcoSmart ECO 18 Electric Tankless Water Heater is a highly efficient option for providing hot water throughout your whole house. With a flow rate of 5 gallons per minute (GPM) and a heat capacity of 18 kilowatts (kW), this unit delivers instant hot water whenever you need it. It offers significant energy savings, providing up to 60% reduction in water heating costs compared to traditional tank heaters.
One of the standout features of the EcoSmart ECO 18 is its self-modulating technology, which adjusts the energy output based on the hot water demand. This ensures that the unit operates at maximum efficiency, saving you money on your energy bills. Additionally, it comes with a lifetime warranty for residential use, giving you peace of mind and confidence in its durability.
The compact size of the EcoSmart ECO 18 makes it ideal for small spaces. It can be installed in point-of-use locations, such as under sinks or near showers, providing hot water right where you need it. This eliminates the need for long pipe runs and reduces the waiting time for hot water to reach your faucets.
Key Features Specifications Flow Rate 5 GPM Heat Capacity 18 kW Energy Savings Up to 60% Warranty Lifetime (residential)
The EcoSmart ECO 18 Electric Tankless Water Heater is a reliable and efficient choice for meeting your household's hot water needs. Its self-modulating technology, compact size, and energy-saving features make it a top contender in the market. Whether you have a small home or a large family, this unit ensures that you'll never run out of hot water again.
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EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 Electric Tankless Water Heater is the perfect choice for small households seeking a reliable and efficient hot water solution. With a flow rate of 2 GPM and a heat capacity of 13 kW, this compact unit provides endless on-demand hot water at controlled flow rates. Its compact size is 90% smaller than traditional tank heaters, making it an excellent space-saving option.
Designed with advanced technology, the EcoSmart ECO 11 offers precise temperature control, ensuring that you have hot water whenever you need it. It also features self-modulating technology, which adjusts the energy consumption based on your hot water demand, resulting in energy savings and reduced utility bills.
Installation of the EcoSmart ECO 11 is straightforward, as it can be mounted on a wall or located in a small utility space. With its compact design and easy-to-follow instructions, you can have this tankless water heater up and running in no time. Additionally, the unit comes with a lifetime warranty for residential use, providing peace of mind and long-term durability.
With its exceptional performance, energy efficiency, and compact size, the EcoSmart ECO 11 Electric Tankless Water Heater is the ideal choice for small households in need of a reliable hot water solution.
Specifications Details Flow Rate 2 GPM Heat Capacity 13 kW Size 90% smaller than traditional tank heaters Installation Wall-mounted or small utility space Warranty Lifetime warranty for residential use
Rheem Tankless Electric Water Heater
The Rheem Tankless Electric Water Heater is a reliable and cost-effective option for providing hot water on demand. With a flow rate of 1.95 GPM and a heat capacity of 8 kW, it is suitable for smaller households or point-of-use applications. This compact unit can be conveniently installed underneath a sink, saving space in your home.
The Rheem Tankless Electric Water Heater offers the convenience of instant hot water without the need for a storage tank. It efficiently heats water as it passes through the unit, providing endless hot water whenever you need it. Its compact design and easy installation make it a practical choice for homeowners looking to upgrade their water heating system.
Equipped with advanced technology, the Rheem Tankless Electric Water Heater ensures reliable performance and energy efficiency. It uses minimal electricity, resulting in reduced energy costs. Additionally, it operates silently, eliminating the noise associated with traditional water heaters.
Key Features:
- Flow rate: 1.95 GPM
- Heat capacity: 8 kW
- Compact size for easy installation
- Energy-efficient operation
- Silent operation
Whether you're looking to replace an outdated water heater or enhance the comfort and efficiency of your home, the Rheem Tankless Electric Water Heater is a reliable choice. Its compact size, energy efficiency, and instant hot water capabilities make it a practical and cost-effective solution for your hot water needs.
Tankless Water Heater Buying Guide
In our tankless water heater buying guide, we will provide you with valuable insights and tips to help you make an informed decision when choosing the right unit for your home. With the growing popularity of tankless water heaters, it's essential to understand the key factors that can impact your purchase, such as power source, flow rate, warranty, and installation requirements.
Power Source
One crucial consideration when selecting a tankless water heater is the power source. You have two options: electric or gas. Electric tankless water heaters are more affordable upfront and easier to install, making them a popular choice for smaller households. On the other hand, gas-powered units offer higher flow rates and can supply hot water to multiple appliances simultaneously. It's important to assess your home's power source availability and choose the option that best fits your needs.
Flow Rate
The flow rate of a tankless water heater determines how much hot water it can deliver per minute. It's crucial to consider your household's daily hot water usage to ensure the selected unit can meet your demands. Different appliances and activities require varying flow rates, so make sure to evaluate your peak usage times to avoid any inconvenience. A higher flow rate is necessary for larger households or homes with multiple bathrooms.
Warranty and Installation
When investing in a tankless water heater, it's essential to consider the warranty offered by the manufacturer. A longer warranty period provides peace of mind and ensures that you are protected against any potential manufacturing defects. Additionally, the installation process is an important factor to consider. While electric units are typically easier to install, gas-powered units may require professional assistance and proper ventilation. It's recommended to consult with a licensed contractor for installation and consider any additional costs that may be involved.
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By taking into account the power source, flow rate, warranty, and installation requirements, you can confidently choose the perfect tankless water heater for your home. Remember to assess your household's specific needs and consult product specifications to ensure compatibility. With the right unit in place, you can enjoy on-demand hot water and energy savings for years to come.
Power Source
Tankless water heaters can be powered by either electricity or gas. The choice of power source is an important factor to consider when selecting a tankless water heater for your home. Let's take a closer look at the advantages and considerations of each option:
Electric Tankless Water Heaters
Electric tankless water heaters are more affordable compared to their gas-powered counterparts. They are also easier to install and typically require less maintenance. Electric units are a great option for smaller households or homes with limited gas availability. However, it's important to note that electric tankless water heaters may have lower flow rates compared to gas-powered models. If you have a larger household with high water consumption, a gas-powered unit might be a better choice.
Gas Tankless Water Heaters
Gas tankless water heaters are known for their energy efficiency and the ability to provide hot water to multiple appliances simultaneously. They use natural gas or propane to heat the water and are capable of delivering higher flow rates compared to electric models. Gas-powered units are an excellent choice for larger households where hot water demand is high. However, it's important to ensure proper ventilation and professional installation to ensure safety and efficiency.
Choosing the Right Power Source
When deciding on the power source for your tankless water heater, consider factors such as your household size, hot water demand, and energy availability. Evaluate the pros and cons of electric and gas-powered models to determine which option best suits your needs. Ensure that your home meets the necessary requirements for installation and consult with a licensed professional to ensure proper setup and operation.
In conclusion, the power source for your tankless water heater plays a significant role in its performance and efficiency. Whether you choose an electric or gas-powered model, make sure to consider your household's specific needs and consult with a professional to ensure the right installation and optimal functionality of your tankless water heater.
Condensing vs. Non-Condensing Tankless Water Heaters
When choosing a tankless water heater for your home, it's essential to understand the difference between condensing and non-condensing units. Both types offer their own advantages and considerations, so let's dive into the details.
1. Condensing Tankless Water Heaters
Condensing tankless water heaters are known for their energy efficiency and cost-effective venting materials. These units extract heat from the exhaust gases, allowing them to achieve a higher energy efficiency rating compared to non-condensing units. By condensing the water vapor in the exhaust, they can recover and reuse the latent heat, resulting in significant energy savings.
In addition to their energy-saving capabilities, condensing tankless water heaters are equipped with advanced technology for improved performance. They typically have a higher flow rate and can provide hot water to multiple appliances simultaneously, making them ideal for larger households.
2. Non-Condensing Tankless Water Heaters
Non-condensing tankless water heaters, on the other hand, are smaller and require less maintenance. These units do not utilize condensation technology to recover and reuse heat, resulting in slightly lower energy efficiency compared to condensing units. However, non-condensing tankless water heaters are still highly efficient and can provide continuous hot water on demand.
One advantage of non-condensing units is their compact size, making them easier to install in tight spaces. They also tend to be more affordable upfront compared to condensing units, which can be a deciding factor for budget-conscious homeowners.
Considerations for Choosing Between Condensing and Non-Condensing Units
When deciding between condensing and non-condensing tankless water heaters, consider factors such as your household size, hot water demand, and budget. If you have a larger household and high hot water demand, a condensing unit may be the best choice to ensure sufficient supply and maximize energy savings. However, if space and upfront cost are more important considerations, a non-condensing unit may be a suitable option.
Ultimately, the decision between condensing and non-condensing tankless water heaters depends on your specific needs and priorities. Consulting with a professional plumber or HVAC specialist can provide valuable insights and help you make an informed decision.
Advantages and Considerations for Whole-House Tankless Water Heaters
When it comes to providing endless hot water throughout your home, whole-house tankless water heaters offer numerous advantages. These energy-efficient units are designed to heat water on demand, eliminating the need for a bulky storage tank. Here, we will explore the benefits of whole-house tankless water heaters and highlight important considerations to keep in mind when selecting the right unit for your home.
Advantages of Whole-House Tankless Water Heaters
One of the key advantages of whole-house tankless water heaters is their ability to provide continuous hot water. Unlike traditional storage tank heaters that can run out of hot water after a certain capacity, tankless units can meet the demand for hot water without any interruptions. This is especially beneficial for larger households or homes with multiple bathrooms where hot water usage is higher.
Additionally, whole-house tankless water heaters are known for their energy efficiency. By only heating water when it is needed, these units can significantly reduce energy consumption compared to storage tank heaters. This not only helps to lower utility bills but also reduces the environmental impact by conserving energy resources.
Another advantage of whole-house tankless water heaters is their space-saving design. Without the need for a large storage tank, these units are compact and can be mounted on a wall, freeing up valuable floor space in your home. Their sleek and modern appearance adds to the aesthetic appeal of any space.
Considerations for Whole-House Tankless Water Heaters
While whole-house tankless water heaters offer many benefits, it is important to consider certain factors when choosing the right unit for your home. One key consideration is the upfront cost. Tankless water heaters tend to have a higher initial investment compared to traditional storage tank heaters. However, the long-term energy savings and durability of tankless units often offset this higher cost over time.
Another consideration is the flow rate of the unit. It is essential to choose a tankless water heater that can meet the hot water demands of your household. Consider factors such as the number of bathrooms, appliances, and fixtures that will be using hot water simultaneously. It is recommended to consult with a professional to determine the appropriate flow rate for your specific needs.
Lastly, warranty and maintenance are important factors to consider when selecting a whole-house tankless water heater. Look for units that come with a reliable warranty to ensure peace of mind and protection against any unexpected issues. Regular maintenance, such as descaling, is also necessary to maintain the efficiency and longevity of the unit.
In summary, whole-house tankless water heaters offer numerous advantages, including continuous hot water, energy efficiency, and space-saving design. However, it is crucial to consider factors such as upfront cost, flow rate, warranty, and maintenance when selecting the right unit for your home. By weighing these considerations and choosing a high-quality tankless water heater, you can enjoy the convenience and efficiency of on-demand hot water throughout your home.
Installation and Maintenance of Tankless Water Heaters
Proper installation and regular maintenance are crucial for the efficient operation and longevity of tankless water heaters. In this section, we will discuss the important aspects of installation and provide tips for ongoing maintenance to ensure optimal performance.
Installation
When it comes to installing a tankless water heater, it is recommended to consult with a licensed contractor who has experience working with these units. They will have the expertise to evaluate your home's plumbing system, electrical or gas connections, and determine the best location for the installation.
For gas-powered units, proper venting is essential to remove combustion gases safely. The venting requirements may vary depending on the specific model and local building codes. It is important to follow the manufacturer's instructions and comply with all applicable regulations to ensure the unit operates safely and efficiently.
Maintenance
To maintain the performance of your tankless water heater, regular maintenance is required. The most common maintenance task is descaling, which involves removing mineral deposits that can accumulate inside the unit over time. The frequency of descaling will depend on the hardness of your water. It is generally recommended to descale the unit annually or as advised by the manufacturer.
In addition to descaling, it is important to clean or replace the water filter, if applicable, according to the manufacturer's instructions. This will help prevent debris and sediment from entering the unit and impacting its performance.
Summary
Proper installation and regular maintenance are vital for ensuring the efficient and reliable operation of tankless water heaters. Consulting with a licensed contractor for installation and following the manufacturer's instructions for maintenance will help maximize the lifespan and performance of the unit. Remember to schedule annual descaling and clean or replace the water filter as needed to keep your tankless water heater running smoothly.
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Pros and Cons of Tankless Water Heaters
When considering a tankless water heater for your home, it's important to weigh the pros and cons to make an informed decision. Tankless water heaters offer several advantages that make them a popular choice among homeowners. However, they also have limitations that may not be suitable for everyone's needs. Let's take a closer look at the pros and cons of tankless water heaters:
Pros of Tankless Water Heaters
- Energy savings: One of the biggest advantages of tankless water heaters is their energy efficiency. Unlike traditional water heaters that constantly heat and store water, tankless units only heat water when it's needed, resulting in significant energy savings over time.
- On-demand hot water: With a tankless water heater, you'll never run out of hot water. These units provide instant hot water whenever you need it, making them ideal for large households or homes with high hot water demand.
- Space-saving design: Tankless water heaters are compact and can be mounted on the wall, saving valuable floor space. They are particularly beneficial for homes with limited space or for those looking to maximize storage options.
Cons of Tankless Water Heaters
- Higher upfront costs: Tankless water heaters tend to have a higher initial cost compared to traditional tank water heaters. However, the energy savings and longer lifespan of tankless units can offset these upfront expenses over time.
- Flow rate limitations: Depending on the model and size of the tankless water heater, there may be limitations on the flow rate it can provide. It's crucial to choose a unit that can meet your household's hot water demand to avoid any inconvenience.
- Potential installation challenges: Installing a tankless water heater may require additional modifications to your home's plumbing and electrical systems. It's recommended to consult with a licensed contractor to ensure proper installation and compliance with building codes.
Overall, tankless water heaters offer many benefits, including energy savings, on-demand hot water, and space-saving design. However, they also come with higher upfront costs and potential installation challenges. Before investing in a tankless water heater, consider your household's hot water needs, budget, and available space. By weighing the pros and cons, you can make an educated decision and choose the right tankless water heater for your home.
Conclusion
In conclusion, tankless electric water heaters are an excellent choice for homeowners looking to provide instant hot water throughout their entire house. These energy-efficient units not only save space but also offer a wide range of models to suit different needs. Whether you opt for the Stiebel Eltron Electric
