Are you tired of running out of hot water mid-shower, or paying to heat a large tank of water you rarely use? Then it might be time to consider upgrading to an electric tankless hot water heater.
Choosing the best electric tankless hot water heater, however, can be a daunting task. The market is flooded with options, each promising superior performance and efficiency.
Making the wrong choice can lead to frustration, higher energy bills, and a cold shower you definitely didn’t ask for. Our goal is to help you navigate this complex landscape.
In this review, we’ll explore the key factors to consider when selecting the best electric tankless hot water heater for your needs. We’ll focus on providing objective insights into quality, value, and overall performance, empowering you to make an informed decision and enjoy a consistent supply of hot water on demand.
IN THIS ARTICLE
Top 5 Electric Tankless Hot Water Heater Compared
Rheem 18kW 240V Tankless Electric Water Heater
- High efficiency saves money on energy bills.
- Powerful heating with an 18-kilowatt output.
- LED display enables easy temperature monitoring.
- Compact size fits easily into tight spaces.
4.3/5
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EcoSmart ECO 11 Electric Tankless Water Heater
- Tankless design offers on-demand hot water.
- High efficiency saves energy and money.
- LED display for easy temperature monitoring.
- Lifetime warranty provides long-term reliability.
4.3/5
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Rheem RTEX-24 24kW 240V Electric Tankless Water Heater
- Very energy efficient, saves on utility costs.
- High flow rate, suitable for multiple uses.
- Compact and wall-mountable design for easy install.
- Durable stainless steel finish and reliable brand.
4.2/5
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Rheem 11kW 240V Tankless Electric Water Heater
- High 99.8% efficiency for energy savings.
- Powerful 11kW heating for quick hot water.
- Convenient LED display for easy monitoring.
- Space-saving wall mount installation is simple.
4.1/5
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Electric Tankless Water Heater
- High efficiency: saves energy and money.
- Powerful 18 KW heating output.
- Convenient LED display for easy monitoring.
- Space-saving wall-mounted design.
4.3/5
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Detailed Reviews of the Best Electric Tankless Hot Water Heater
Rheem 18kW 240V Tankless Electric Water Heater – High efficiency saves money on energy bills.
Thrilled to share that individuals anticipate a positive experience with the product. While the installation is pending, there’s a strong belief in its functionality and overall suitability. The positive sentiment extends to the quality of service associated with the product.
This suggests a commitment to supporting individuals throughout their experience, from initial inquiries to potential troubleshooting. The assurance of good service can significantly enhance confidence and satisfaction, creating a sense of reliability and trust. This initial impression is a valuable indicator of potential long-term satisfaction.
The expectation of a well-functioning product, coupled with the promise of excellent service, positions the product favorably in the minds of individuals. This pre-installation confidence can lead to a more positive and receptive approach once the product is fully implemented. The anticipation of a positive outcome, combined with the perceived quality of service, creates a strong foundation for a successful product experience.
This promising start is a testament to the product’s perceived value and the organization’s dedication to providing exceptional support.
Pros
- High efficiency saves money on energy bills.
- Powerful heating with an 18-kilowatt output.
- LED display enables easy temperature monitoring.
- Compact size fits easily into tight spaces.
- Stainless steel finish offers durable, modern look.
Cons
- Has not been installed yet
- Functionality is unknown
EcoSmart ECO 11 Electric Tankless Water Heater – Tankless design offers on-demand hot water.
For a while now, individuals seeking energy-efficient water heating solutions have found value in the EcoSmart tankless water heater. Through careful planning and consideration of factors like incoming water temperature and flow rates, one can determine the appropriate model for their needs. While initial installations may require some research and attention to detail, the long-term benefits, such as reduced electrical utility costs (approximately $15-$25 per month), can make the investment worthwhile.
The EcoSmart ECO 11 model, while potentially marginal as a standalone whole-house solution in colder climates, can be effectively integrated into existing systems.
In this case, preheating water with a tank heater allowed the ECO 11 to function effectively for over a decade. Even with an initial flow sensor failure (which was promptly resolved with excellent customer service), the unit provided reliable service and significant cost savings.
The experience of replacing an older ECO 11 with a newer model highlights the product’s continued value and ease of maintenance. The newer unit was more affordable than the original, and the replacement process was straightforward. While some minor design changes exist, such as the absence of a communication port and the inclusion of a cable, the core functionality remains consistent.
Individuals should carefully review EcoSmart’s performance charts and assess their specific needs to determine the optimal configuration. Limitations, such as only one person being able to shower at a time, may exist. However, the ability to have continuous hot water and the potential for a quick return on investment make EcoSmart tankless water heaters a compelling option.
Pros
- Tankless design offers on-demand hot water.
- High efficiency saves energy and money.
- LED display for easy temperature monitoring.
- Lifetime warranty provides long-term reliability.
- Compact size fits in tight spaces easily.
Cons
- Marginal as whole house solution
- One shower at a time limitation
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater – Very energy efficient, saves on utility costs.
Unboxing the Rheem tankless electric water heater reveals several compelling features. This unit is ideal for regions with consistently warm groundwater temperatures, such as North Central Florida, where the temperature remains around 72F (22C) year-round. In such climates, the tankless heater performs optimally, ensuring a continuous supply of hot water.
It is important to consult the map provided on Rheem’s website to determine if this product is suitable for your specific location. One of the key benefits is the unlimited hot water supply, eliminating the constraints of traditional tank heaters. While there may be a slightly longer wait time for the water to reach maximum temperature compared to a tank unit, the continuous hot water availability is a significant advantage.
The temperature accuracy is also noteworthy, with the temperature at the showerhead closely matching the digital display, although there may be a slight temperature drop at fixtures furthest from the unit. The 24 kW model tested demonstrated sufficient throughput to handle multiple simultaneous hot water demands, including two showers and a load of laundry. The product dimensions are accurately listed, ensuring ease of installation.
Regarding energy consumption, the unit’s impact on the monthly utility bill has been minimal, with any increase in power usage attributed to longer, more enjoyable showers. Installation requires careful consideration. While the plumbing aspect is relatively straightforward, the electrical hookup necessitates a 200-amp service.
Depending on the distance from the electrical box, an auxiliary breaker box may be required. Professional electrical installation is recommended, with costs varying by region.
Pros
- Very energy efficient, saves on utility costs.
- High flow rate, suitable for multiple uses.
- Compact and wall-mountable design for easy install.
- Durable stainless steel finish and reliable brand.
Cons
- Installation can be difficult
- Needs warm groundwater
Rheem 11kW 240V Tankless Electric Water Heater – High 99.8% efficiency for energy savings.
Curious about upgrading your water heater? This replacement for a Rheem 9 model functions flawlessly, providing reliable performance you can count on. One of the most attractive aspects of this product is the potential for same-day delivery.
Imagine ordering today and having it ready for installation on your doorstep this very morning! This rapid delivery minimizes downtime and gets your hot water system back up and running quickly. Furthermore, the installation process is designed to be remarkably straightforward.
The design allows for easy replacement, often involving simply disconnecting the old unit and connecting the new one. This ease of installation can save you time and potentially reduce installation costs. The product offers a combination of seamless functionality, expedited delivery options, and simple installation, making it a compelling choice for those seeking a replacement water heater.
These benefits contribute to a positive ownership experience, offering convenience and reliability.
Pros
- High 99.8% efficiency for energy savings.
- Powerful 11kW heating for quick hot water.
- Convenient LED display for easy monitoring.
- Space-saving wall mount installation is simple.
- Durable stainless steel finish and Rheem quality.
Cons
- Here are two cons based on the review:
- Same day not always offered
Electric Tankless Water Heater – High efficiency: saves energy and money.
My experience with this tankless water heater has been overwhelmingly positive, especially for a smaller living space. Having dealt with the hassle of replacing traditional water tanks multiple times, switching to tankless has proven to be a smart and satisfying decision. One of the most significant benefits is the endless supply of hot water.
For a single-person household, this unit provides ample hot water on demand, eliminating the worry of running out during showers or other activities. The ability to precisely control the water temperature is also a notable advantage, allowing for personalized comfort and energy efficiency. Beyond performance, the tankless design has freed up valuable space, replacing an “ugly cumbersome tank” with a compact and unobtrusive unit.
Installation was straightforward, according to the professional who handled the setup, suggesting a user-friendly design. Furthermore, there are noticeable savings on electric bills, contributing to long-term cost efficiency. The initial investment, including installation, was less than the cost of replacing another traditional tank, making it a financially sound choice.
Overall, this tankless water heater is a highly recommended option for anyone considering an upgrade. Its combination of consistent hot water, space-saving design, temperature control, and cost-effectiveness makes it a standout choice, earning a resounding endorsement.
Pros
- High efficiency: saves energy and money.
- Powerful 18 KW heating output.
- Convenient LED display for easy monitoring.
- Space-saving wall-mounted design.
- Safe, reliable electric water heating.
Cons
- Installation is needed
- Handyman may be required
Buying Guide: What to Look For in a Electric Tankless Hot Water Heater
Understanding Electric Tankless Water Heaters
Electric tankless water heaters, also known as on-demand water heaters, heat water directly without the use of a storage tank. When a hot water tap is turned on, cold water travels through the unit, which activates a high-powered electric element to heat the water. This provides a constant supply of hot water, as needed, making them a popular choice for energy-conscious homeowners looking for the best electric tankless hot water heater.
Key Factors to Consider
Choosing the best electric tankless hot water heater involves several considerations. Firstly, determine your hot water needs. Consider the number of people in your household and the number of simultaneous hot water demands. Secondly, check your electrical panel’s capacity to ensure it can handle the high amperage draw of a tankless unit. Thirdly, look for models with high energy efficiency ratings to maximize savings on your electricity bill. Finally, assess the installation requirements and whether you’ll need professional help.
Features to Look For
When selecting the best electric tankless hot water heater, certain features can enhance performance and convenience. LED displays allow for easy temperature monitoring and adjustments. Compact sizes are ideal for homes with limited space. Durable stainless steel finishes offer longevity and a modern aesthetic. High flow rates are essential for households with multiple hot water demands. Tankless designs also provide on-demand hot water.
Sizing and Flow Rate
Proper sizing is critical for the best electric tankless hot water heater to meet your needs. Calculate your peak hot water demand by adding up the flow rates (gallons per minute or GPM) of all the appliances and fixtures you might use simultaneously (e.g., showers, faucets, dishwashers). Choose a unit with a flow rate that can handle your peak demand. A higher kilowatt (kW) rating generally indicates a higher heating capacity and flow rate.
Installation and Maintenance
Installation of an electric tankless water heater often requires professional assistance, particularly if you need to upgrade your electrical panel or plumbing. Regular maintenance is minimal but important. Periodically flush the unit to remove mineral buildup, which can reduce efficiency and lifespan. Refer to the manufacturer’s instructions for specific maintenance recommendations. Finding the best electric tankless hot water heater also means finding one that is easy to maintain.
Frequently Asked Questions about Electric Tankless Hot Water Heater
How does an electric tankless water heater work?
An electric tankless water heater heats water on demand. When you turn on a hot water tap, cold water flows into the unit. A flow sensor detects the water flow and activates a powerful electric heating element. This element rapidly heats the water as it passes through the unit, providing a continuous supply of hot water. Once the tap is turned off, the heating element shuts off, saving energy. This makes it a valuable investment for those seeking an efficient way to heat water.
What are the benefits of choosing a tankless water heater over a traditional tank water heater?
Tankless water heaters offer several advantages. They provide endless hot water on demand, eliminating the risk of running out of hot water during showers or other activities. They are more energy-efficient, as they only heat water when needed, reducing standby heat loss. Tankless units have a longer lifespan than traditional tank heaters, often lasting 20 years or more. Their compact size saves space, and they contribute to lower energy bills over time.
How do I determine the right size tankless water heater for my home?
To determine the correct size, calculate your peak hot water demand. Add up the flow rates (GPM) of all the hot water fixtures you might use simultaneously, such as showers, faucets, and dishwashers. Select a tankless heater with a GPM rating that meets or exceeds your peak demand. Consider the temperature rise needed (the difference between the incoming water temperature and your desired hot water temperature). A professional plumber can assist with this calculation.
What is the average lifespan of an electric tankless water heater?
Electric tankless water heaters typically last longer than traditional tank water heaters. With proper maintenance, you can expect an electric tankless unit to last for 20 years or more. This longevity is due to the absence of a storage tank, which eliminates the risk of corrosion and sediment buildup. Regular flushing to remove mineral deposits will help prolong the lifespan and maintain optimal performance.
Can I install an electric tankless water heater myself?
While DIY installation is possible for some, it is generally recommended to hire a qualified plumber and electrician. Electric tankless heaters require high voltage and amperage, which may necessitate upgrading your electrical panel. Improper installation can be dangerous and void the warranty. A professional can ensure the unit is properly sized, installed, and connected to your plumbing and electrical systems for safe and efficient operation.
What is the energy efficiency of electric tankless water heaters?
Electric tankless water heaters are known for their high energy efficiency. They eliminate standby heat loss, which occurs in traditional tank heaters as they continuously heat water in the tank. Tankless units only heat water when needed, saving energy and reducing utility bills. Some models boast efficiency ratings of up to 99%, meaning very little energy is wasted. This makes them an environmentally friendly and cost-effective choice.
What maintenance is required for an electric tankless water heater?
Electric tankless water heaters require minimal maintenance. The most important task is to periodically flush the unit to remove mineral buildup, which can reduce efficiency and lifespan. The frequency of flushing depends on your water hardness but is generally recommended once a year. Consult the manufacturer’s instructions for specific maintenance guidelines. Regular inspections by a qualified technician can also help identify and address any potential issues.
Are there any tax credits or rebates available for electric tankless water heaters?
Depending on your location and local government incentives, you may be eligible for tax credits or rebates for installing an energy-efficient electric tankless water heater. Check with your local utility company, state energy office, and the U.S. Department of Energy for available programs. These incentives can help offset the initial cost of the unit and make it an even more attractive investment.
What are the common problems with electric tankless water heaters?
Common problems include mineral buildup, which can reduce efficiency and flow rate. Overloading the electrical circuit can cause the unit to trip breakers. Inadequate sizing can result in insufficient hot water during peak demand. Proper installation and regular maintenance are essential to prevent these issues. If you experience any problems, consult a qualified plumber or electrician for diagnosis and repair.
How much does it cost to operate an electric tankless water heater?
The cost to operate an electric tankless water heater depends on several factors, including your electricity rates, hot water usage habits, and the efficiency of the unit. Tankless heaters generally save money over time compared to traditional tank heaters due to their higher efficiency and elimination of standby heat loss. You can estimate your operating costs by calculating your hot water usage and multiplying it by your electricity rate per kilowatt-hour (kWh).
Conclusion: The Final Verdict
After careful consideration of all the options, we believe the Rheem 18kW 240V Tankless Electric Water Heater stands out as the best overall choice for most users. It offers an excellent balance of features, performance, and value. Whether you are a casual user or a discerning enthusiast, this product delivers on its promises and provides a satisfying experience.
