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Discover the Best Rated Electric Tankless Water Heater in the US.

Investing in a tankless water heater is a smart decision for improving energy efficiency and saving space. When choosing a new tankless water heater, there are several factors to consider, such as fuel type, power output, and maximum flow rate. Gas tankless water heaters offer more power, while electric tankless water heaters are more affordable. The flow rate and temperature rise are also important considerations. To help you make an informed decision, we have researched and compiled a list of the best tankless water heaters based on fuel type, flow rate, size, and the number of fixtures each unit can supply.

Key Takeaways:

  • Investing in a tankless water heater improves energy efficiency and saves space.
  • Consider the fuel type, power output, and maximum flow rate when choosing a tankless water heater.
  • Gas tankless water heaters offer more power, while electric tankless water heaters are more affordable.
  • Flow rate and temperature rise are important factors to consider.
  • Our list of the best tankless water heaters is based on extensive research into fuel type, flow rate, size, and the number of fixtures each unit can supply.

Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater

The Rinnai RUC98iN Ultra Series is a highly efficient natural gas tankless water heater that provides hot water on demand. With a powerful flow rate of 11 gallons per minute (GPM), it is suitable for most four- to six-person families. The compact design of the RUC98iN, with dimensions of 14.76”Dx22.05”Wx33.86”H, allows for easy installation in tight spaces.

This natural gas tankless water heater is capable of supplying hot water to 2 to 7 fixtures simultaneously, making it an ideal choice for homes with multiple bathrooms and appliances. Whether it's running two showers and a dishwasher or a shower, washing machine, and kitchen sink, the RUC98iN can meet the hot water needs of a busy household.

Durability is also a key feature of the Rinnai RUC98iN. Built to last, this unit can provide reliable hot water for up to 20 years. However, it's important to note that the WiFi module and external pump for recirculation are sold separately, so additional purchases may be required for specific functionalities.

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Summary of the Rinnai RUC98iN Ultra Series:

Flow Rate Dimensions Number of Fixtures 11 GPM 14.76”Dx22.05”Wx33.86”H 2 to 7

Ecosmart ECO 11 Electric Tankless Water Heater

The Ecosmart ECO 11 is an affordable electric tankless water heater that is perfect for small homes with one or two people. Despite its compact size of 3.75”Dx17”Wx17”H, this unit delivers a reliable performance. The maximum flow rate of 5 GPM ensures a steady supply of hot water. With this impressive flow rate, the Ecosmart ECO 11 can supply hot water to 1 to 2 fixtures simultaneously.

This electric tankless water heater features a flow sensor that intelligently modulates energy consumption based on your hot water demands. This helps to optimize efficiency and reduce energy costs. It is important to note that the installation of the Ecosmart ECO 11 requires three 40-amp double pole breakers to ensure safe and proper operation.

With its affordability, compact size, and adequate flow rate, the Ecosmart ECO 11 electric tankless water heater is an excellent choice for small households looking for an efficient and reliable hot water solution.

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Comparison: Ecosmart ECO 11 vs. Rinnai RUC98iN vs. Stiebel Eltron Tempra Plus vs. Rheem Prestige RTGH-95DVLN vs. Rinnai V65EP

Model Flow Rate (GPM) Fixture Capacity Dimensions (DxWxH) Ecosmart ECO 11 Ecosmart ECO 11 Electric Tankless Water Heater 5 1 to 2 3.75”Dx17”Wx17”H Rinnai RUC98iNRinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater 11 2 to 7 14.76”Dx22.05”Wx33.86”H Stiebel Eltron Tempra PlusStiebel Eltron Tempra Plus 29 kW Tankless Water Heater 7 1 to 3 4.63”Dx16.63”Wx14.5”H Rheem Prestige RTGH-95DVLNRheem Prestige RTGH-95DVLN 9.5 GPM Indoor Direct Vent Natural Gas Tankless Water Heater 8.4 2 to 5 9.8”Dx18.5”Wx27.5”H Rinnai V65EPRinnai V65EP Outdoor Propane Tankless Water Heater 5.6 1 to 2 7.9”Dx14”Wx19.8”H

Note: GPM refers to gallons per minute. Fixture capacity indicates the number of fixtures the unit can supply with hot water simultaneously. Dimensions are provided as depth (D), width (W), and height (H) respectively.

In the table above, we compare the key specifications of the Ecosmart ECO 11 with other popular tankless water heaters in the market. This comparison can help you make an informed decision based on your specific hot water needs.

Stiebel Eltron Tempra Plus 29 kW Tankless Water Heater

The Stiebel Eltron Tempra Plus is an exceptional electric tankless water heater that combines advanced technology with compact design. Equipped with flow control and self-modulation technology, this innovative unit ensures efficient water heating and precise temperature control. With a maximum flow rate of 7 GPM, it can supply hot water to 1 to 3 fixtures simultaneously, making it suitable for small to medium-sized households.

Measuring at just 4.63 inches deep, 16.63 inches wide, and 14.5 inches high, the Stiebel Eltron Tempra Plus is designed to save valuable space. It can be easily installed in utility rooms, closets, or other compact areas. The unit operates silently and features an easy-to-read digital control panel, allowing users to adjust the temperature to their preferred settings with ease.

To give you an overview of the Stiebel Eltron Tempra Plus, here are the key specifications:

Flow Control Technology Yes Self-Modulation Technology Yes Maximum Flow Rate 7 GPM Dimensions 4.63" D x 16.63" W x 14.5" H Number of Fixtures Supplied 1 to 3 fixtures

With its advanced features and compact size, the Stiebel Eltron Tempra Plus is an excellent choice for homeowners seeking a reliable and efficient electric tankless water heater. Its ability to provide hot water on demand, coupled with its space-saving design, makes it a top contender in the market.

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Rheem Prestige RTGH-95DVLN 9.5 GPM Indoor Direct Vent Natural Gas Tankless Water Heater

When it comes to exceptional performance and safety features, the Rheem Prestige RTGH-95DVLN natural gas tankless water heater stands out. With a maximum flow rate of 8.4 GPM, this unit can provide hot water to 2 to 5 fixtures simultaneously, making it suitable for medium-sized households.

One of the standout features of the Rheem Prestige RTGH-95DVLN is its built-in water and gas leak detection system. This advanced safety feature ensures that any leaks are quickly detected, minimizing the risk of potential damage and providing peace of mind for homeowners.

Rheem Prestige RTGH-95DVLN natural gas tankless water heater

With dimensions of 9.8”Dx18.5”Wx27.5”H, this tankless water heater is designed to be compact and space-saving. It requires venting to the outside of the home for proper operation and safety.

Whether you need hot water for a few fixtures or multiple bathrooms, the Rheem Prestige RTGH-95DVLN natural gas tankless water heater offers reliable performance and advanced safety features, making it a top choice for homeowners.

Product Flow Rate Dimensions (inches) Number of Fixtures Rheem Prestige RTGH-95DVLN 8.4 GPM 9.8”Dx18.5”Wx27.5”H 2 to 5

Table: Comparison of the Rheem Prestige RTGH-95DVLN with other tankless water heaters

Rinnai V65EP Outdoor Propane Tankless Water Heater

When it comes to outdoor installation, the Rinnai V65EP propane tankless water heater is a top choice. It offers the convenience of instant hot water in outdoor spaces such as pools, spas, or outdoor kitchens. With a maximum flow rate of 5.6 GPM, this unit can supply hot water to 1 to 2 fixtures simultaneously, making it perfect for smaller households.

One standout feature of the Rinnai V65EP is its enhanced scale detection system. This feature helps reduce the risk of internal damage caused by mineral buildup, prolonging the lifespan of the unit. Its compact dimensions, measuring at 7.9”Dx14”Wx19.8”H, allow for easy installation in tight spaces. The durability of this unit ensures it can last up to 20 years, providing reliable hot water for years to come.

Specifications Details Flow Rate 5.6 GPM Dimensions 7.9”Dx14”Wx19.8”H Number of Fixtures 1 to 2

This propane tankless water heater from Rinnai is designed to deliver efficient performance and reliable hot water in outdoor settings. Its scale detection feature, compact size, and durable construction make it an excellent choice for those looking to enjoy instant hot water in their outdoor spaces.

Tankless vs. Tank Water Heater: Which is Right for You?

When it comes to selecting a water heater for your home, you may be faced with the choice between a tankless water heater and a traditional tank water heater. Each option has its own benefits and considerations, and understanding the differences can help you make an informed decision that meets your specific needs.

Flow Rate and Capacity

One of the primary differences between tankless water heaters and tank water heaters is their flow rate and capacity. Tankless water heaters are designed to provide hot water on demand, heating water as it passes through the unit. This means that the flow rate may be lower compared to tank water heaters, which store a large volume of hot water in a tank for immediate use.

For households with high hot water demands, such as multiple showers or large families, a tank water heater with a high capacity may be more suitable. However, if your hot water needs are lower or you prefer the energy-efficient benefits of a tankless system, a lower flow rate may be sufficient.

Temperature Control and Modulating Burners

Tankless water heaters often offer precise temperature control, allowing you to set the desired water temperature with greater accuracy. Some models even feature modulating burners, which adjust the heat output based on the water flow rate and temperature requirements. This can help maintain a consistent and comfortable hot water supply throughout your home.

Considerations for Fuel Type and Efficiency

Another important factor to consider is the fuel type for your water heater. Tankless water heaters are available in electric, natural gas, and propane options, while tank water heaters are typically powered by electricity or natural gas. The availability and cost of your preferred fuel type may influence your decision.

In terms of energy efficiency, tankless water heaters are generally more efficient because they only heat water as needed, eliminating the standby energy losses associated with tank water heaters. However, it's important to note that the energy efficiency of tankless water heaters can vary depending on the model and usage patterns.

Tankless Water Heater Tank Water Heater Flow Rate Lower Higher Capacity Varies Depends on tank size Temperature Control Precise May vary Modulating Burners Available on some models N/A Energy Efficiency Generally higher Varies

Ultimately, the choice between a tankless water heater and a tank water heater depends on your specific hot water needs, preferences, and budget. Consider factors such as flow rate, capacity, temperature control, and energy efficiency to determine which type of water heater is right for you.

Next, we'll explore the benefits of tankless water heaters, including their energy efficiency, compact size, and longer lifespan.

Benefits of Tankless Water Heaters

Tankless water heaters offer numerous benefits, making them a popular choice for homeowners seeking energy efficiency and convenience. Here are some key advantages of tankless water heaters:

1. Energy Efficiency: Tankless water heaters are highly energy efficient compared to traditional tank models. They only heat water on demand, eliminating standby energy losses associated with storing and reheating water continuously. This efficiency translates into significant energy savings over time.

2. Compact Size: Tankless water heaters are much more compact than traditional tank models, making them perfect for homes with limited space. They can be installed in small utility closets or mounted on walls, freeing up valuable floor space for other purposes.

3. Elimination of Standby Energy Losses: Traditional tank water heaters store hot water in a tank, leading to standby energy losses as the water gradually cools down. Tankless water heaters eliminate this issue by heating water only when needed, reducing energy waste and saving money on utility bills.

4. Longer Lifespan: Tankless water heaters have a longer lifespan compared to traditional tank models. With proper maintenance and care, tankless water heaters can last up to 20 years or more, providing reliable hot water for many years.

Overall, tankless water heaters offer the benefits of energy efficiency, compact size, elimination of standby energy losses, and a longer lifespan. By investing in a tankless water heater, homeowners can enjoy the convenience of instant hot water while reducing their environmental footprint and saving money on energy bills.

Advantages of Tankless Water Heaters Energy Efficiency Compact Size Elimination of Standby Energy Losses Longer Lifespan

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Factors to Consider When Choosing a Tankless Water Heater

When selecting a tankless water heater, several factors should be taken into consideration to ensure you find the right unit for your needs. These factors include fuel type, size, capacity, temperature control, and modulating burners. By carefully evaluating each of these aspects, you can make an informed decision that will provide you with efficient and reliable hot water for years to come.

Fuel Type

The first consideration is the fuel type of the tankless water heater. The three main options are natural gas, propane, and electric. Natural gas and propane tankless water heaters typically offer higher power output, making them suitable for larger households or areas with colder groundwater temperatures. On the other hand, electric tankless water heaters are more affordable and easier to install, making them a popular choice for smaller households with lower hot water demands.

Size and Capacity

The size of the tankless water heater is another important factor to consider. You'll want to select a unit that fits the available space in your home while still providing the necessary hot water supply. Additionally, the capacity of the tankless water heater should be sufficient to meet the hot water needs of your household. Consider the number of fixtures in your home and the peak hot water demand to determine the appropriate capacity for your tankless water heater.

Temperature Control and Modulating Burners

Temperature control is a crucial feature to look for in a tankless water heater. Some models offer precise temperature control, allowing you to set the desired hot water temperature with ease. Modulating burners are another important feature to consider. These burners adjust the heat output based on the hot water demand, resulting in energy savings and optimal performance. Both temperature control and modulating burners can enhance the efficiency and convenience of your tankless water heater.

Factor Considerations Fuel Type Natural gas, propane, or electric Size Fits available space in your home Capacity Meets hot water needs of your household Temperature Control Precise temperature settings Modulating Burners Adjustable heat output based on demand

By carefully considering these factors, you can choose a tankless water heater that suits your specific needs and provides efficient and reliable hot water. Whether you opt for a natural gas, propane, or electric unit, ensure it has the appropriate size, capacity, temperature control, and modulating burners to meet the demands of your household. With the right tankless water heater, you can enjoy the luxury of hot water on demand while saving energy and space in your home.

How to Calculate the Flow Rate Needed for Your Household

Calculating the flow rate needed for your household is crucial when selecting a tankless water heater that can meet your hot water needs effectively. By determining the flow rate, you can ensure a constant supply of hot water for all your fixtures. Let's explore how to calculate the flow rate for your household.

First, you need to identify the fixtures that are likely to be running simultaneously. This typically includes showers, faucets, washing machines, and other appliances that require hot water. Determine the flow rate of each fixture in gallons per minute (GPM). This information is usually specified in the product documentation or can be found on the manufacturer's website.

Once you have the flow rates for all the fixtures, add them together to get the total flow rate needed for your household. This calculation will give you an estimate of the gallons per minute (GPM) required to supply hot water to all your fixtures simultaneously. Ensure that the tankless water heater you choose can meet or exceed this flow rate to avoid any issues with inadequate hot water supply.

Fixtures Flow Rate (GPM) Shower 2.5 Faucet 1.5 Washing Machine 2.0 Total Flow Rate6.0 GPM

In the example above, the total flow rate required for the household is 6.0 gallons per minute (GPM). This means that the tankless water heater should have a flow rate of at least 6.0 GPM to provide hot water to all the fixtures simultaneously. Keep in mind that it's always a good idea to choose a tankless water heater with a slightly higher flow rate than the calculated value to ensure optimal performance.

Understanding the Differences Between Gas and Electric Tankless Water Heaters

When it comes to choosing a tankless water heater, one of the key factors to consider is the fuel type: gas or electric. Gas tankless water heaters are known for their higher power output, making them suitable for medium to large families with higher hot water needs. These units can heat water at a faster rate and are often recommended for areas with low groundwater temperatures. On the other hand, electric tankless water heaters are more affordable upfront but may have higher energy bills over time.

Gas tankless water heaters are known for their energy efficiency and ability to provide a greater volume of hot water. They are generally more powerful and can supply hot water to multiple fixtures simultaneously. However, they require a gas supply and proper ventilation for safe operation. Additionally, gas tankless water heaters may have a higher initial cost and require professional installation.

Electric tankless water heaters, on the other hand, are more affordable upfront and do not require a gas supply or ventilation. They are known for their compact size and ease of installation. Electric tankless water heaters are suitable for small to medium-sized households with lower hot water demands. While they may have a lower power output compared to gas units, they can still provide instant hot water on demand. It's important to note that electric tankless water heaters may have higher energy bills compared to gas models, as electricity rates can vary.

The Pros and Cons of Gas and Electric Tankless Water Heaters

Gas Tankless Water Heaters Electric Tankless Water Heaters Higher power output More affordable upfront Greater volume of hot water Compact size Suitable for medium to large families Easier installation Require gas supply and ventilation No gas supply or ventilation required Higher initial cost Possible higher energy bills

When deciding between a gas and electric tankless water heater, consider your hot water needs, budget, and installation requirements. If you have a larger household with higher hot water demands, a gas tankless water heater may be the better option. However, if you have a smaller household and are looking for a more affordable and compact solution, an electric tankless water heater may be suitable. Evaluate your specific needs and consult with a professional to determine the best choice for your home.

Installation Tips for Tankless Water Heaters

When it comes to installing a tankless water heater, it's crucial to enlist the help of a professional. Proper installation ensures that venting and electrical requirements are met, ensuring the safety and optimal performance of the unit. At [Our Company Name], we offer expert installation services to ensure that your tankless water heater operates efficiently.

Venting is an important aspect of tankless water heater installation. Since these units do not have a storage tank, they require proper venting to remove combustion byproducts safely. A licensed plumber will evaluate your home's layout and determine the most suitable venting method, whether it's through a wall or roof vent.

In addition to venting, electrical requirements must be met for the installation of a tankless water heater. These units typically require higher voltage and amperage than traditional tank water heaters. Our professional technicians will assess your electrical system and make any necessary modifications to meet the specific requirements of your tankless water heater.

By relying on our professional installation services, you can have peace of mind knowing that your tankless water heater is set up correctly and functioning at its best. Our team has the knowledge and expertise to handle all aspects of the installation process, from venting and electrical work to ensuring the unit is properly calibrated. Trust [Our Company Name] for a hassle-free and efficient tankless water heater installation.

Table: Pros of Professional Tankless Water Heater Installation

Benefits Explanation Proper Venting A professional ensures that the venting system is correctly installed, ensuring the safe removal of combustion byproducts. Meet Electrical Requirements Professional technicians assess and modify the electrical system to meet the specific electrical requirements of a tankless water heater. Optimal Performance Professional installation ensures that the tankless water heater is calibrated correctly for efficient and reliable operation. Peace of Mind By relying on professionals, you can have confidence that your tankless water heater is installed correctly and will perform at its best.

Maintenance and Care for Tankless Water Heaters

Maintaining and caring for your tankless water heater is essential for its longevity and optimal performance. By following a few simple maintenance tasks, you can ensure that your tankless water heater continues to provide hot water efficiently and effectively.

Flushing

One important maintenance task for tankless water heaters is regular flushing. Over time, minerals and sediment can build up inside the unit, which can affect its performance and potentially lead to damage. Flushing the system removes these deposits and helps maintain the efficiency of the water heater. Check the manufacturer's guidelines for specific instructions on how to flush your tankless water heater.

Inspection

Regular inspection of your tankless water heater is crucial to identify any issues or potential problems early on. Visually examine the unit for any signs of leaks, corrosion, or damage. Inspect the venting system to ensure it is clear and free of debris. If you notice any problems or are unsure about the condition of your tankless water heater, it's advisable to contact a professional for a thorough inspection.

Warranty

Understanding the warranty details of your tankless water heater is important for proper maintenance. Check the terms and conditions of the warranty to ensure you follow the recommended maintenance procedures and meet any specific requirements. Failure to adhere to the warranty guidelines could void the warranty and result in additional costs if repairs or replacements are needed.

By regularly flushing your tankless water heater, conducting inspections, and adhering to warranty guidelines, you can help maintain the performance and extend the lifespan of your unit. As with any major appliance, it's recommended to consult the manufacturer's documentation or seek professional assistance for specific maintenance tasks.

Maintenance Task Frequency Flushing the system Once a year Visual inspection Every three months Professional inspection Every two years

Energy Efficiency and Cost Savings with Tankless Water Heaters

When it comes to heating water, tankless water heaters offer both energy efficiency and cost savings. Unlike traditional tank water heaters that constantly heat and store water, tankless water heaters only heat water as it is needed. This eliminates the standby energy losses associated with tank water heaters, where energy is wasted heating and reheating water that may not be used immediately. By operating on-demand, tankless water heaters provide hot water efficiently, resulting in lower energy bills over time.

Tankless water heaters achieve energy efficiency through their innovative design and technology. With no need to continually heat a large volume of water, tankless water heaters can significantly reduce energy consumption. They typically have a higher energy efficiency rating compared to tank water heaters, meaning they convert more energy into usable heat. This energy efficiency not only reduces environmental impact but also translates into long-term cost savings for homeowners.

Key Benefits:

  • Energy efficiency: Tankless water heaters only heat water when needed, reducing energy consumption and costs.
  • Cost savings: Lower energy bills result from the efficient use of energy and the elimination of standby heat loss.
  • Long lifespan: Tankless water heaters have a longer lifespan compared to traditional tank water heaters, saving money on replacement costs.
  • Space-saving: Tankless water heaters are compact in size, making them ideal for homes with limited space.
  • Endless hot water supply: Tankless water heaters provide a continuous supply of hot water, ensuring no one runs out during showers or other activities.

Energy Efficiency Rating Cost Savings (Estimate) Tankless Water Heater 10-20% lower energy bills annually Tank Water Heater Higher energy bills due to standby heat loss

As the table above illustrates, tankless water heaters have a clear advantage when it comes to energy efficiency and cost savings compared to traditional tank water heaters. The estimated 10-20% lower energy bills annually for tankless water heaters can lead to substantial long-term savings. Additionally, the compact size of tankless water heaters provides more flexibility in installation, making them an excellent choice for homeowners with limited space.

In conclusion, investing in a tankless water heater not only improves energy efficiency and reduces energy bills but also provides the convenience of endless hot water on demand. With their advanced technology and compact design, tankless water heaters are a smart choice for homeowners looking to save money and reduce their environmental footprint.

Conclusion

In conclusion, the search for the best rated electric tankless water heater can be challenging, but it is worth the effort. Investing in a tankless water heater not only improves energy efficiency and saves space, but also provides instant hot water on demand. By considering factors such as fuel type, flow rate, size, and the number of fixtures, you can find the perfect tankless water heater for your household's needs.

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