Exploring the ever-changing landscape of tankless water heaters can feel like a challenging task, but fear not – this expert guide is your compass to uncover the best of the best of 2024’s offerings. From energy-efficient marvels to high-capacity powerhouses, these nine units promise to redefine your hot water experience, ushering in an era of cost savings and convenience. As you delve into the details, you’ll discover features that cater to your unique household needs, ensuring that your next water heater investment is nothing short of a triumphant victory.
If you’re seeking an energy-efficient, space-saving tankless water heater that can handle high-demand needs, the EcoSmart ECO 27 is a top contender. This 27-kW electric model boasts impressive features, including consistent temperature monitoring within 1 degree and self-modulating technology to optimize energy use.
With a compact 17x17x3.5-inch frame, it saves up to 90% of the space required by traditional tank heaters. The ECO 27 can provide endless hot water, potentially saving you up to 50% on water heating costs.
Designed for cold climates and high-flow applications, it’s suitable for whole-home use and can handle incoming water temperatures as low as 37°F. While the initial investment may be higher, the long-term energy savings and efficient performance make the ECO 27 a smart choice for many homeowners.
Best For: Homeowners seeking an energy-efficient, high-flow tankless water heater for whole-home use, especially in cold climates.
Pros:
Provides endless on-demand hot water
Saves up to 50% on water heating costs
Compact, space-saving design
Cons:
Higher initial investment cost
Requires professional installation for warranty eligibility
With its impressive 7.5 GPM capacity and Energy Star certification, the Rinnai Tankless Hot Water Heater (RL75IN) is an ideal choice for homeowners seeking an efficient and reliable hot water solution.
This compact, 54-pound unit boasts a durable design that’s backed by a 12-year residential guarantee and a 5-year commercial warranty, ensuring long-lasting performance.
The Circ-Logic technology allows for customizable recirculation patterns, providing you with precise control over your hot water supply.
While professional installation is recommended, the detailed product manuals guide you through the process, ensuring a smooth setup.
Customers rave about the Rinnai’s energy-saving benefits and exceptional hot water delivery, making it a top contender in the tankless water heater market.
With its impressive features and reliable performance, the Rinnai RL75IN is a smart investment for your home.
Best For: Homeowners seeking an efficient, reliable, and customizable tankless hot water solution for their homes.
Pros:
Energy-efficient and space-saving design
Impressive 7.5 GPM capacity to meet household hot water demands
Durable construction with long-lasting warranties
Cons:
Professional installation is recommended for optimal performance
May require plumbing skills for proper setup
Slightly more expensive upfront cost compared to traditional tank water heaters
Rheem 18kW 240V Tankless Electric Water Heater, Gray
The Rheem 18kW 240V Tankless Electric Water Heater, Gray is an ideal choice if you’re looking for a mid-range whole-home tankless water heater that provides continuous, endless hot water without the need for venting.
This stylish, compact unit delivers up to 4.4 gallons per minute of hot water while conserving space, energy, and money. The self-modulating technology can help you save up to 50% on your water heating bills, making it a wise investment.
Installation is straightforward, with easy bottom connections and a digital temperature display for accurate control. Sturdy copper heating elements and an LED display ensure enduring performance and simple maintenance.
Whether you want to upgrade your single-shower household or supply hot water to your entire home, the Rheem 18kW is a dependable and effective option.
Best For: The Rheem 18kW 240V Tankless Electric Water Heater is best for mid-range whole-home applications, including single shower setups in the Midwest region.
Pros:
Offers continuous, endless hot water supply
Compact, space-saving design
Can save up to 50% on water heating bills with self-modulating technology
Cons:
Installation may require professional expertise, especially for electrical work
May not be suitable for households with simultaneous high hot water demands (e.g., multiple showers/baths)
Requires 240V electrical service, which may not be available in all homes
The Rinnai RXP199iN’s high-efficiency performance and smart connectivity features make it an optimal choice for homeowners seeking a dependable and future-proof tankless water heater in 2024. Boasting an impressive 11.1 GPM capacity and a 98% Energy Efficiency Factor (UEF), this compact 199,000 BTU unit can easily manage the hot water demands of even the largest households.
Its Wi-Fi connectivity and Rinnai Central App integration allow for smooth remote monitoring and control, while the Smart-Circ Intelligent Recirculation system guarantees consistent hot water delivery. With a sleek silver finish and a professional installation recommendation, the RXP199iN is a feature-rich tankless solution that’s built to last.
Just be cautious of the mixed feedback on warranty support, and analyze your options to ensure the best long-term value for your home.
Best For: Homeowners seeking a high-efficiency, Wi-Fi-enabled tankless water heater with intelligent recirculation capabilities to meet the hot water demands of large households.
Pros:
Impressive 11.1 GPM capacity and 98% Energy Efficiency Factor (UEF)
Smart-Circ Intelligent Recirculation system for consistent hot water delivery
Compact size and sleek silver finish for versatile indoor or outdoor installation
Cons:
Mixed feedback on warranty service and support
Professional installation recommended, which may increase overall costs
Potential price competitiveness concerns compared to other brands
Stiebel Eltron Tempra 36 Plus Tankless Water Heater
For homeowners seeking an energy-efficient and on-demand hot water solution, the Stiebel Eltron Tempra 36 Plus Tankless Water Heater delivers. Its sleek design, advanced flow control, and standout performance make it a top contender in the tankless water heater market.
This tankless unit’s 36 kW of power provides a continuous supply of hot water, saving you 15-20% on energy costs compared to traditional tank heaters. The Tempra 36 Plus utilizes advanced flow control technology to maintain a constant water temperature, ensuring a comfortable and consistent showering experience.
With its compact, venting-free design, this tankless heater is an excellent choice for space-conscious homes. While professional installation may be required, the Tempra 36 Plus’s quick heating and energy savings solidify its place as a reliable option for those looking for a reliable hot water solution.
Best For: Homeowners seeking an energy-efficient, on-demand hot water solution for their space-conscious homes.
Pros:
Provides continuous, on-demand hot water supply
Saves 15-20% on energy costs compared to traditional tank heaters
Sleek, compact, and venting-free design
Cons:
May require professional installation
High amperage draw of 150A/132A
Relatively high initial cost
Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation
Homeowners seeking a reliable and energy-efficient tankless water heater for their outdoor installation can consider the Rinnai V53DeN, offering a high-performance flow rate of 5.3 GPM.
This sleek, Euro-white unit provides endless hot water with exceptional efficiency, thanks to its 81-kilowatt heat output. Installation is straightforward, and the Rinnai’s 10-year warranty on the heat exchanger, 5-year labor warranty, and 1-year parts warranty offer peace of mind.
While you’ll need to make sure proper setup, additional features like Wi-Fi monitoring are available to enhance your experience. Customers praise the Rinnai’s ease of installation and quality, noting its impressive volume, heat output, and efficiency.
With the right accessories and a bit of prep work, you can have this tankless powerhouse up and running in no time, delivering reliable hot water to your home.
Best For: Homeowners seeking a high-performance, energy-efficient, and reliable tankless water heater for outdoor installations.
Pros:
Offers a high flow rate of 5.3 GPM to serve multiple appliances simultaneously
Features a durable 10-year warranty on the heat exchanger for peace of mind
Provides exceptional efficiency with its 81-kilowatt heat output
Cons:
Requires proper installation and setup to ensure optimal performance
Additional accessories like Wi-Fi monitoring may be needed for enhanced features
Outdoor installation may require additional considerations for weather protection
With its compact design, high efficiency, and endless on-demand hot water, the EcoSmart ECO 11 stands out as an ideal choice for those seeking a space-saving, energy-conscious tankless water heater solution.
Delivering up to 3.1 gallons per minute of hot water, this electric heater offers a temperature range of 80-140°F, making it suitable for bathrooms, small sinks, and low-flow applications.
Featuring a sleek white exterior and a lightweight 6.5-pound body, the ECO 11 is easy to install and use, with a digital temperature control for precise adjustments.
Boasting a lifetime warranty on its electronics, exchanger, and element, this WaterSense-certified heater promises long-lasting performance and reliable energy savings.
Whether you’re upgrading your home or outfitting a small office, the EcoSmart ECO 11 is a compelling option that balances functionality, efficiency, and convenience.
Best For: The EcoSmart ECO 11 Electric Tankless Water Heater is best for small households, bathrooms, office breakrooms, and low-flow applications that require on-demand hot water in a compact, energy-efficient form.
Pros:
Provides endless hot water on-demand
Compact and space-saving design
High energy efficiency and thermal performance
Cons:
May not be suitable for high-demand hot water needs
Why would the Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY be a great choice for your home? With its digital thermostatic control, copper heating elements, and impressive 3.17 GPM flow rate, this tankless water heater offers efficient and reliable hot water delivery.
If you’re looking to upgrade from an old tank heater, the Rheem RTEX-13 can save you money on energy bills while providing a consistent supply of hot water. Users praise its easy installation and maintenance, reporting that a simple cleaning resolved any issues with water pressure or temperature fluctuations.
And for specialized applications like in-floor heating, the Rheem tankless heater delivers stable performance. Whether you’re a DIY installer or prefer professional help, this energy-efficient unit can be a smart investment for your household.
Best For: The Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY is best for homeowners looking to upgrade from a traditional tank heater for improved energy efficiency and consistent hot water supply.
Pros:
Energy-efficient with a high flow rate of 3.17 GPM
Easy installation and maintenance with included adapters and cleaning recommendations
Suitable for diverse applications like in-floor heating systems
Cons:
May not be able to support multiple high-flow water appliances simultaneously
Requires 240V electrical setup, which may be more complex for some homes
Upfront cost is higher than traditional tank heaters
Rheem RETEX-36 Performance 36 kw Electric Tankless Water Heater
The Rheem RETEX-36 Performance 36 kW Electric Tankless Water Heater is an ideal choice for those seeking an energy-efficient, on-demand hot water solution that can handle high-demand scenarios effectively. This refurbished unit, tested and certified to look and work like new, delivers a remarkable 6 GPM of hot water, perfect for busy households.
It’s worth noting that the installation process requires some electrical and plumbing expertise, but the payoff is substantial. You’ll enjoy faster water heating, impressive performance in various weather conditions, and a negligible impact on your electricity bills. Couple this with the convenience of on-demand hot water, and you’ve got a winning combination.
Whether you’re upgrading or building new, the Rheem RETEX-36 is a top contender for your tankless water heater needs.
Best For: The Rheem RETEX-36 Performance 36 kW Electric Tankless Water Heater is best for homeowners seeking an energy-efficient, on-demand hot water solution that can handle high-demand scenarios effectively.
Pros:
Heats water faster than traditional tank heaters
Performs well in various weather conditions
Handles high demand for hot water effectively
Cons:
Installation requires some electrical and plumbing expertise
Manual can be vague, recommending professional installation for inexperienced users
Requires multiple 240V double pole breakers for operation
Factors to Consider When Choosing Tankless Water Heaters
When shopping for a tankless water heater, there are several important factors to consider.
You’ll want to evaluate aspects such as energy efficiency, flow rate, installation requirements, user controls, and the type of fuel it uses.
These features can greatly impact the performance, cost, and long-term ownership experience of your new water heater.
Take the time to assess these factors carefully to ensure you select the best tankless system for your home.
Energy Efficiency and Savings
One of the key advantages of tankless water heaters lies in their remarkable energy efficiency, which can translate to substantial savings on your utility bills. These on-demand systems boast thermal efficiencies of up to 99%, a noteworthy improvement over traditional tank-style heaters.
By eliminating standby heat loss, tankless models minimize energy consumption, helping you cut costs.
The real-time heating capabilities of tankless units also play a role in their efficiency. Self-modulating technology allows these heaters to adjust their energy usage based on your hot water demand, optimizing performance and minimizing waste.
When evaluating your options, pay close attention to the Energy Factor (EF) rating, which indicates how efficiently the unit converts energy into hot water.
While the exact savings may vary depending on factors like incoming water temperature and your usage patterns, the energy-saving benefits of tankless water heaters are undeniable.
With their advanced features and impressive efficiency, these innovative systems offer a cost-effective solution that can notably reduce your environmental impact and monthly utility bills.
Flow Rate and Capacity
Alongside the energy-saving benefits, flow rate and capacity are essential aspects to ponder when selecting a tankless water heater that’ll meet your household’s hot water needs.
The flow rate refers to the amount of hot water your tankless unit can deliver per minute, typically measured in gallons per minute (GPM). Higher flow rates are ideal for larger homes with greater hot water demands, while lower flow rates work best for smaller households or low-usage scenarios.
To determine the right flow rate, consider the number of fixtures and appliances that’ll be used simultaneously. Tankless heaters with higher capacities can provide a continuous supply of hot water for longer periods, accommodating multiple showers or appliances running at the same time.
Striking the right balance between flow rate and capacity is essential to guarantee your tankless water heater can efficiently cater to your home’s hot water requirements. By carefully weighing these factors, you can choose the perfect tankless system to keep your family comfortable all year round.
Installation and Maintenance
Proper installation and consistent maintenance are essential when selecting a tankless water heater to guarantee its peak performance and warranty coverage. While DIY installation is feasible for moderately experienced individuals, professional installation is strongly recommended to ensure your tankless system operates optimally and qualifies for the lifetime warranty.
Improper wiring, circuit breakers, or electrical setup can compromise the heater’s efficiency and pose serious safety risks, so it’s vital to have a qualified technician handle the installation.
Regular maintenance is also suggested to prevent issues and maintain a steady hot water supply. Consider acquiring spare heating elements to allow for swift replacements if needed, minimizing any disruption to your hot water access.
User Interface and Controls
The user interface and controls of a tankless water heater are important considerations when making your selection. Tankless models typically feature intuitive digital displays that allow you to easily adjust the water temperature to your preferred setting. Many also boast LED readouts that clearly show the current temperature, providing real-time feedback for a seamless user experience.
Some advanced tankless water heaters take user convenience a step further with smart control systems. These enable remote monitoring and adjustment via Wi-Fi, giving you the ability to manage your water heating from anywhere. User-friendly interfaces make it simple to set your preferences and monitor energy usage, ensuring you get the most out of your investment.
Consistent water temperature is also a key factor, and tankless heaters use advanced flow control technology to maintain a comfortable experience. Whether you prioritize digital displays, smart controls, or precise temperature regulation, there’s a tankless model to suit your needs and preferences.
Fuel Type and Compatibility
When choosing a tankless water heater, you’ll need to consider the fuel type that best suits your home’s current infrastructure and local utility availability.
Electric tankless water heaters are often the easiest to install since they simply require a compatible electrical system. They also tend to require less maintenance than gas models.
However, natural gas tankless water heaters are generally more energy-efficient, though they may require professional installation and proper venting.
Propane tankless water heaters provide flexibility in installation locations, but they come with higher initial costs and ongoing fuel expenses.
Regardless of the fuel type, make sure the selected tankless water heater is compatible with your home to avoid additional installation fees. Conduct your research to find the optimal choice that balances efficiency, cost, and ease of installation for your specific requirements.
With the appropriate tankless water heater, you can experience endless hot water while reducing energy bills.
Warranty and Durability
One important aspect when selecting a tankless water heater is the warranty and durability of the unit. Consider the length and coverage of the guarantee offered, as longer guarantees often indicate higher quality and durability.
Look for models that come with guarantees covering key components like the heating elements, exchanger, and electronics. Ideally, you’ll want to find a unit with a limited lifetime guarantee, which demonstrates the manufacturer’s confidence in the product’s longevity.
Be certain the guarantee covers both the cost of the heater and any necessary repairs or replacements. This will provide you with peace of mind and protection against unexpected expenses down the line.
Additionally, review user feedback and industry ratings to assess the real-world durability and reliability of the tankless water heater models you’re considering.
Taking the time to thoroughly research the guarantee and durability aspects will help ensure you select a high-quality, long-lasting tankless water heater that meets your household’s hot water needs.
Frequently Asked Questions
How Long Do Tankless Water Heaters Typically Last?
Well, tankless water heaters typically last 15-20 years with proper maintenance. Their longevity depends on factors like usage, water quality, and care – so you’ll want to follow the manufacturer’s recommendations to get the most out of your investment.
Can Tankless Water Heaters Be Used for Radiant Floor Heating?
Tankless water heaters can be used for radiant floor heating. For instance, Sarah found that her tankless water heater efficiently heated her home’s radiant floor system, providing consistent warmth throughout the year. It’s a practical and energy-efficient solution.
Do Tankless Water Heaters Require Annual Maintenance?
Yes, tankless water heaters do require annual maintenance. You’ll need to flush the system, clean the burners, and check the venting to verify it’s functioning properly. Staying on top of maintenance keeps your tankless heater running efficiently.
How Efficient Are Tankless Water Heaters Compared to Traditional Tank Heaters?
Tankless water heaters are generally more efficient than traditional tank heaters, with energy savings of up to 50% due to their on-demand heating and lack of standby heat loss. This can markedly reduce your utility bills.
Can Tankless Water Heaters Be Installed in Cold Climates?
You’re braving the icy winds, but don’t let the chill deter you. Tankless water heaters thrive in cold climates, delivering toasty water on demand, no matter how low the mercury dips. Stay warm and bask in their efficiency.
Conclusion
Choosing the right tankless water heater can be a game-changer, like discovering the secret to a never-ending hot shower.
With features like self-regulating technology and Wi-Fi connectivity, these units adapt to your needs, ensuring you never run out of hot water and saving you money in the long run.
Prioritize energy efficiency, flow rate, and professional installation to get the most out of your investment.
