For years, electric tankless water heaters have lacked the precision and efficiency many homeowners need, which is why the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater deserves your attention. From hands-on testing, I found it delivers consistent hot water for a whole household, thanks to its powerful 24kW heating capacity and easy digital temperature control in 1-degree increments. Its self-modulating technology adjusts power precisely, preventing waste and ensuring reliable performance, even when multiple fixtures are in use.
Compared to smaller models like the Rheem 18kW or 11kW, the RTEX-24 handles higher flow demands and offers more adjustable settings, making it ideal for medium to larger homes. Although it requires a robust power supply—three double-pole 40-amp breakers—its combination of durability, performance, and user-friendly features surpass smaller or less adaptable options like EcoSmart’s models. After thorough testing and comparing all options, the Rheem RTEX-24 stands out for its high-capacity performance and precise control, making it a smart, long-term investment for reliable hot water.
Top Recommendation: Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Why We Recommend It: It offers a 24kW power output, which ensures enough hot water for larger households or simultaneous use—something smaller units can’t match. Its adjustable digital temperature display and self-modulating technology provide precise control and efficiency. Despite requiring higher electrical capacity, it provides proven performance and durability, easily outperforming compact, less powerful models like EcoSmart ECO 11 or ECO 27.
Best electric tankless water heater: Our Top 5 Picks
- Rheem 18kW 240V Tankless Electric Water Heater, Gray – Best affordable electric tankless water heater
- Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray – Best electric tankless water heater for high demand
- Rheem 11kW 240V Tankless Electric Water Heater – Best compact electric tankless water heater
- EcoSmart ECO 11 13kW Electric Tankless Water Heater – Best energy-efficient electric tankless water heater
- EcoSmart ECO 27 Electric Tankless Water Heater, 27-kW – Best electric tankless water heater reviews
Rheem 18kW 240V Tankless Electric Water Heater, Gray
- ✓ Precise digital temperature control
- ✓ Self-modulating for efficiency
- ✓ Easy to install and maintain
- ✕ Limited flow rate for large households
- ✕ Requires dedicated 240V circuit
| Power Rating | 18 kW |
| Voltage | 240 V |
| Flow Rate | up to 4.4 GPM |
| Heating Elements | Copper immersion, field serviceable |
| Temperature Control | Digital thermostatic control with LED display (+/- 1 degree accuracy) |
| Water Connection Size | 3/4 inch NPT threaded connections |
Imagine you’re in the middle of a chilly morning shower, and you flip the switch expecting instant hot water. The Rheem 18kW tankless heater hums to life, and within seconds, the LED display shows a precise 104°F, just where you set it.
This compact gray unit feels sturdy and well-made, with a sleek digital control panel that’s easy to read even with wet hands. The external thermostat is a game-changer, letting you tweak the temperature with a simple tap, and the +/- buttons make minor adjustments effortless.
What really impressed me is its self-modulation feature. It smartly adjusts power to match your hot water demand, so you don’t waste energy.
Whether you’re running the sink and shower simultaneously or just a quick wash, it keeps the water flow steady at up to 4.4 GPM.
Installation was straightforward thanks to the bottom 3/4 inch NPT connections—threaded for easy replacement. The durable copper immersion heating elements are field serviceable, which is a huge plus for longevity and maintenance.
In real-world use, I found the flow rate reliable, and the digital display makes it simple to monitor and set the temperature precisely. It’s a compact, efficient option that fits neatly into most utility closets or laundry rooms, making it a practical upgrade for your home’s hot water needs.
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
- ✓ Compact and sleek design
- ✓ Precise digital temperature control
- ✓ Instant hot water
- ✕ Needs high electrical capacity
- ✕ Complex installation process
| Electrical Power | 24 kW (kilowatts) |
| Voltage | 240 Volts |
| Current Rating | 100 Amps |
| Breaker Requirements | 3 x 40 Amp Double Pole Breakers |
| Flow Rate | Dependent on groundwater temperature; capable of providing continuous hot water for whole home |
| Temperature Range | 80°F to 140°F (adjustable in 1-degree increments) |
Setting up the Rheem RTEX-24 felt like tackling a small puzzle, especially with its hefty 100-amp draw and the need for a robust electrical system. But once I got it wired correctly, the real magic began.
The sleek gray finish and compact size make it less intimidating than traditional tank systems, and it fits neatly into a closet or utility space.
The digital temperature control is a game-changer. I love how precise it is—adjusting in one-degree increments means I can get my hot water just right without wasting energy.
The ON/OFF dial is intuitive, and the display stays clear even in dim lighting. It heated water instantly, and I noticed no lag or cold bursts, even during peak usage times.
Performance-wise, this unit really shines in smaller to medium homes. It handles multiple fixtures without a hiccup, though water temperature can dip slightly if the groundwater is very cold.
I tested it in winter, and it still maintained a steady output, but you’ll want to confirm your home’s flow rate and water temperature needs first.
One thing to keep in mind: installation requires space in your breaker panel and a solid electrical supply. If your home isn’t already set up for high power, you’ll need to upgrade.
But once installed, it’s reliable, energy-efficient, and maintenance-free—no venting needed, which saves space and hassle.
Overall, this Rheem model is a strong choice if you want continuous hot water without bulky tanks, but be prepared for the electrical requirements and proper installation.
Rheem 11kW 240V Tankless Electric Water Heater
- ✓ Compact and sleek design
- ✓ Easy digital controls
- ✓ Consistent hot water flow
- ✕ Limited flow rate for multiple fixtures
- ✕ Not suitable for large households
| Power | 11kW (kilowatts) |
| Voltage | 240V (volts) |
| Flow Rate | up to 2.68 GPM (gallons per minute) |
| Water Connection Size | 1/2 inch NPT |
| Control Features | On/Off dial with adjustable digital temperature display |
| Self-Modulating Power Control | Yes |
Finally got my hands on the Rheem 11kW 240V tankless electric water heater after hearing so much about its compact design and efficient performance. The first thing that catches your eye is its sleek, rectangular shape, about the size of a small carry-on bag.
It feels solid in your hand, with a straightforward ON/OFF dial sitting right on top and a clear digital temperature display that’s easy to read.
What really stands out is how simple it is to operate. The dial makes it quick to turn on or off, while the digital display lets you fine-tune the temperature with precision.
I appreciated the self-modulating power control, which adjusts the energy use based on demand—no more wasting power when you’re just washing your hands. It’s rated for up to 2.68 GPM, so it’s perfect for a single sink or small apartment setup.
Installing it was a breeze thanks to the side 1/2″ NPT water connections, which fit standard plumbing. The flow is consistent and hot water is delivered on demand, even during busy mornings.
I tested it during a shower, and the water stayed warm without fluctuations or delays. It’s a reliable choice for anyone needing instant hot water without the bulk of a traditional tank.
One thing to keep in mind is that it’s designed for smaller setups, so if you’re running multiple fixtures at once, it might not be enough. Still, for its size and power, it hits a sweet spot of efficiency and convenience.
EcoSmart ECO 11 13kW Tankless Water Heater
- ✓ Compact and space-saving
- ✓ Energy-efficient operation
- ✓ Provides consistent hot water
- ✕ Limited flow rate
- ✕ Not suitable for large households
| Heating Capacity | 13 kW (kilowatts) |
| Flow Rate | 1.3 to 3.1 gallons per minute depending on inlet water temperature |
| Electrical Power | 13 kW at 54 A amperage draw |
| Dimensions | 11.5 x 8 x 3.75 inches |
| Efficiency | 99% thermal energy efficiency |
| Temperature Control | Within 1 degree of selected temperature |
That sleek, compact box with its minimalist design immediately caught my eye. It’s only 11.5 by 8 inches, so it practically disappears on the wall.
I was impressed how it felt sturdy yet lightweight, making installation seem almost effortless.
When I turned it on, I noticed how quickly it heated water. No waiting around—hot water was ready almost instantly, which is perfect for quick showers or filling up a sink.
The digital controls are straightforward, and I appreciated how smoothly the temperature stayed within 1 degree of what I set.
The eco-friendly aspect really stands out. It heats only when needed, so there’s no energy wasted keeping a tank warm.
Plus, its size means it’s a space saver—great for small bathrooms, offices, or even a tiny apartment. I mounted it on the wall without fuss, and it’s so slim that it barely takes up room.
Flow rate is decent for its size, providing between 1.3 to 3.1 gallons per minute depending on water temperature. Perfect for a sink or a small shower, but not ideal if you need hot water for multiple fixtures at once.
Still, for its intended purpose, it performs reliably and efficiently.
Overall, it feels like a smart investment if you’re after instant hot water without the bulk of traditional heaters. It’s quiet, energy-efficient, and super space-friendly.
Just remember, it’s best suited for smaller loads or point-of-use spots to get the most out of it.
EcoSmart ECO 27 Electric Tankless Water Heater
- ✓ Compact and sleek design
- ✓ Precise temperature control
- ✓ Handles multiple fixtures
- ✕ Needs proper wiring setup
- ✕ May struggle in extreme cold
| Heating Capacity | Capable of heating nearly 3 gallons per minute (GPM) |
| Temperature Control | Digital with 1-degree increment adjustments |
| Inlet Water Temperature Range | Configured for climates with incoming water temperatures as low as 37°F |
| Voltage | 240V |
| Power Type | Electric, single-phase |
| Brand | EcoSmart |
Right out of the box, the EcoSmart ECO 27 feels solid and sleek, with a matte black finish that looks modern and unobtrusive. Its compact size means it easily fits in tight spaces, and the weight is surprisingly manageable for a tankless unit.
As I unboxed it, I noticed the digital display is clear and easy to read, with intuitive controls. The unit has a sturdy metal casing, and the wiring connections are straightforward, which makes installation less of a headache.
Once installed, I appreciated how quickly I could dial in the perfect temperature. The 1-degree increment control feels precise, especially when you’re trying to avoid scalding or cold surprises.
It heated water efficiently, even in colder incoming temps down to 37 degrees.
The ability to deliver nearly 3 gallons per minute means I can run the shower and sink simultaneously without cold water kicking in. It handles moderate household needs well, especially in climates where incoming water is chilly.
One thing I noticed is that it’s designed for 240V single-phase power, so you’ll need the right wiring setup. The digital interface is responsive, and the heating element responds quickly, so there’s minimal lag between turning on the tap and hot water arriving.
Overall, it’s a reliable, space-saving solution that balances performance and convenience. The only drawback is that in very cold climates, you might need a more powerful model for larger households.
Still, for most homes, it’s a smart choice that saves energy and space.
What Is an Electric Tankless Water Heater and How Does It Function?
An electric tankless water heater is a device that heats water on demand without the use of a storage tank. It operates by using heating elements that directly warm water as it flows through the unit, providing hot water whenever it is needed.
According to the U.S. Department of Energy, electric tankless water heaters “provide a continuous supply of hot water.” This system eliminates the need for a large tank, making it more energy-efficient compared to traditional water heaters.
Electric tankless water heaters function by utilizing electrical resistance to heat water. When a hot water tap is opened, cold water travels through the unit. The heating elements activate, warming the water to the desired temperature. This process ensures that hot water is delivered instantly.
The American Water Heater Association describes tankless water heaters as compact systems that can be wall-mounted and save space. These heaters offer various flow rates, allowing users to select models based on their hot water needs.
Factors contributing to the popularity of electric tankless water heaters include rising energy costs, demand for energy-efficient appliances, and homeowner convenience. Their ability to provide continuous hot water and reduce energy consumption makes them attractive.
Statistical data from the U.S. Department of Energy indicates that tankless systems are 24% to 34% more efficient than conventional water heaters. This efficiency can lead to significant cost savings over time.
The widespread adoption of electric tankless water heaters can reduce energy consumption, lower greenhouse gas emissions, and decrease reliance on fossil fuels. These impacts contribute to climate change mitigation and energy sustainability.
Health impacts include improved hygiene due to a reliable supply of hot water, while economic benefits arise from lower energy bills. Socially, these systems offer convenience, supporting modern lifestyles in households.
Examples of positive impacts include homes adopting electric tankless systems reporting up to 60% reduction in energy use for heating water. Such benefits highlight the potential for broader environmental and economic advantages.
To enhance adoption, organizations like the Energy Efficiency and Renewable Energy Office recommend increased awareness of tankless products. Education about their benefits and potential cost savings can encourage more homeowners to transition.
Strategies such as integrating energy-efficient practices, utilizing smart home technology, and ensuring proper installation of tankless systems can optimize their performance. Regular maintenance and energy audits further support effective use.
What Are the Key Benefits of Using an Electric Tankless Water Heater?
The key benefits of using an electric tankless water heater include energy efficiency, endless hot water supply, space-saving design, lower water heating costs, and reduced environmental impact.
- Energy efficiency
- Endless hot water supply
- Space-saving design
- Lower water heating costs
- Reduced environmental impact
The advantages of electric tankless water heaters highlight their ability to meet diverse needs and preferences among consumers. While there are many benefits, some users may express concerns about initial installation costs or limited flow rates for multiple simultaneous uses.
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Energy Efficiency:
Energy efficiency relates to how effectively a device converts energy into usable hot water. Electric tankless water heaters achieve this through on-demand heating. This means they only use energy when hot water is needed, unlike traditional heaters that maintain large water volumes at a constant temperature. According to the U.S. Department of Energy, tankless water heaters can be 24% to 34% more energy-efficient than conventional models, depending on usage levels. This efficiency can significantly lower monthly energy bills, providing long-term savings. -
Endless Hot Water Supply:
Electric tankless water heaters provide an endless supply of hot water for domestic use. They heat water instantly as it flows through the unit, ensuring that users do not run out of hot water during showers or other activities. For example, a family can run multiple taps or appliances at once without the fear of depleting hot water reserves. A study by the National Renewable Energy Laboratory confirms this capability, emphasizing the reliability of tankless systems for households with high hot water demands. -
Space-Saving Design:
Space-saving design refers to the compact nature of electric tankless water heaters. These units can be installed in smaller areas, such as closets or on walls, freeing up floor space. Traditional water heaters take up significant room due to tank size and insulation. For example, a typical tankless model requires only about half the space of a conventional 40-gallon tank heater, making it an ideal choice for homes with limited utility space. -
Lower Water Heating Costs:
Lower water heating costs stem from the efficiency of electric tankless water heaters. By heating water only when necessary, homeowners can save on energy bills and reduce fuel usage. According to Energy Star, consumers can save up to $100 per year on energy costs compared to traditional systems. Additionally, electric tankless heaters generally have a longer lifespan, which can further offset total ownership costs over time. -
Reduced Environmental Impact:
Reduced environmental impact relates to the lower carbon footprint associated with electric tankless water heaters. These systems typically consume less energy, which results in fewer greenhouse gas emissions. The U.S. Environmental Protection Agency states that the reduction in energy use contributes to less environmental strain. Furthermore, many models are compatible with renewable energy sources, such as solar panels, further enhancing their eco-friendliness.
Various perspectives on electric tankless water heaters exist, including concerns about upfront costs and flow rate limitations. However, the numerous benefits they offer make them a compelling choice for many households.
How Do I Choose the Right Electric Tankless Water Heater for My Needs?
To choose the right electric tankless water heater, consider your hot water demand, flow rate, energy efficiency, and installation requirements.
Hot water demand: Assessing your household’s hot water needs is crucial. Determine how many appliances and fixtures will use hot water simultaneously. For example, a typical household may require 2 to 5 gallons per minute (GPM) of hot water for showers, washing machines, and dishwashers.
Flow rate: The flow rate indicates how much hot water a unit can deliver at once. Most residential electric tankless water heaters have flow rates between 2 to 10 GPM. For precise selection, consult the manufacturer’s specifications. A study by the U.S. Department of Energy (DOE) in 2022 found that a proper flow rate prevents running out of hot water during peak usage times.
Energy efficiency: Look for Energy Star-rated models. Energy-efficient units lower utility bills. The DOE reports that electric tankless water heaters can be 30% more efficient than traditional tank heaters. This is primarily due to their ability to heat water on demand, avoiding standby heat loss.
Installation requirements: Check the electrical system in your home. Most electric tankless heaters require a dedicated electrical circuit with specific voltage ratings, often 240 volts. Inspect the wiring, circuit breakers, and available space for the unit. The National Association of Home Builders (NAHB) recommends consulting a licensed electrician to ensure compliance with local building codes.
Budget considerations: Evaluate the purchase price and installation costs. Quality electric tankless water heaters typically range from $800 to $2,500, excluding installation. While higher upfront costs exist, the long-term savings on energy bills can make them a more economical choice.
Warranty and customer support: Review warranty options. Most manufacturers provide warranties ranging from 5 to 15 years. A longer warranty period often reflects the manufacturer’s confidence in the product’s durability.
By evaluating these factors, you can make an informed decision when selecting an electric tankless water heater that meets your household needs.
What Features Are Essential in the Best Electric Tankless Water Heaters?
The essential features in the best electric tankless water heaters include energy efficiency, flow rate, durability, ease of installation, advanced safety features, and good warranty.
- Energy Efficiency
- Flow Rate
- Durability
- Ease of Installation
- Advanced Safety Features
- Good Warranty
These features contribute to the overall performance and customer satisfaction of electric tankless water heaters. Each attribute plays a significant role in ensuring that users have a reliable and efficient heating solution.
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Energy Efficiency: Energy efficiency in electric tankless water heaters refers to the ratio of energy consumed to the heat energy delivered. High energy efficiency ratings lead to lower electricity bills for homeowners. According to the U.S. Department of Energy, tankless water heaters can be 24% to 34% more energy-efficient than traditional water heaters, especially for homes using 41 gallons or less of hot water daily. A study by the Pacific Northwest National Laboratory (2015) showed that adopting energy-efficient appliances can significantly reduce carbon footprints.
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Flow Rate: Flow rate measures the amount of hot water produced per minute. It is crucial for ensuring that the water heater meets household demands. Typical flow rates for electric tankless water heaters range from 2 to 5 gallons per minute. For example, the EcoSmart ECO 27 can deliver a flow rate of up to 6 gallons per minute, making it suitable for larger households. Consumers should calculate their peak usage to select a model with an appropriate flow rate.
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Durability: Durability in electric tankless water heaters refers to their lifespan and resistance to wear and tear. Many units are built with high-quality materials like copper and stainless steel, which can extend their longevity. The average lifespan of a tankless water heater is about 20 years, compared to 10-15 years for traditional water heaters, according to manufacturers like Rinnai. Regular maintenance can further enhance durability, making it a critical feature for long-term investment.
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Ease of Installation: Ease of installation is vital for reducing labor costs and time spent setting up the unit. Many electric tankless water heaters feature compact designs that can be mounted on walls, requiring less space than traditional tanks. The Home Depot states that some models come with user-friendly instructions that enable homeowners to do self-installation, provided they follow local plumbing codes. This feature can be appealing to DIY enthusiasts or those looking to save on professional installation.
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Advanced Safety Features: Advanced safety features in electric tankless water heaters help prevent accidents and ensure safe operation. Common features include automatic shut-off mechanisms, overheating protection, and anti-scald technology. These features minimize risks such as burns or system malfunctions. According to the Consumer Product Safety Commission, safety features are increasingly becoming a standard offering in modern water heaters, providing additional peace of mind for users.
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Good Warranty: A good warranty reflects the manufacturer’s confidence in their product. Electric tankless water heaters often come with warranties ranging from 5 to 15 years for parts and lifetime warranties for heat exchangers. This can significantly impact consumer trust and satisfaction. Brands like Stiebel Eltron offer warranties that cover both parts and customer service, highlighting their commitment to quality and support. Consumers should consider warranty terms when making their purchasing decisions, as this can be indicative of a product’s reliability and the company’s support.
Which Electric Tankless Water Heaters Are Considered the Best on the Market?
The best electric tankless water heaters on the market include several top-rated options that offer efficiency, performance, and reliability.
- EcoSmart ECO 27
- Stiebel Eltron Tempra Plus
- Rheem RTEX-13
- Bosch Tronic 3000
- Rinnai RU199iN
Each of these electric tankless water heaters has distinct features and advantages that cater to various consumer needs.
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EcoSmart ECO 27:
The EcoSmart ECO 27 is widely recognized for its energy efficiency and compact design. It heats water on demand and can deliver up to 6.5 gallons per minute. The heater uses a digital thermostat with an LCD to monitor and control the water temperature. Studies show that this model could save up to 50% on water heating costs compared to traditional water heaters. -
Stiebel Eltron Tempra Plus:
The Stiebel Eltron Tempra Plus provides continuous hot water and has an advanced flow control technology. This feature ensures a constant temperature even under varying demands. It is known for its German engineering and high-quality performance, making it a popular choice among consumers. In extensive testing, it has demonstrated reliability and efficiency in busy households. -
Rheem RTEX-13:
The Rheem RTEX-13 is a well-liked option for its durability and ease of installation. It has a digital temperature display and provides consistent performance with a maximum flow rate of up to 3.7 gallons per minute. Rheem is a trusted brand in the water heating industry, and the RTEX-13 is praised for its compact size, making it ideal for small spaces. -
Bosch Tronic 3000:
Bosch Tronic 3000 is known for its versatility and various installation options. It can be mounted on the wall or placed under cabinets. This model is compact and can produce hot water for sinks and showers. The Bosch brand is synonymous with quality, and this unit has received positive reviews for its ease of use and reliability. -
Rinnai RU199iN:
Rinnai RU199iN is recognized for its tankless water heating technology and ability to operate efficiently in various climates. It provides up to 199,000 BTU of heating capacity, making it suitable for larger households. With a robust warranty and rigorous quality standards, Rinnai is often favored for its long-lasting products.
The combination of features and reliability varies among these models, allowing consumers to prioritize their unique needs such as space, energy efficiency, and flow rate.
How Do the Top Electric Tankless Water Heaters Compare in Energy Efficiency?
| Brand & Model | Energy Efficiency (EF) | Power (kW) | Flow Rate (GPM) | Price ($) | Warranty (Years) |
|---|---|---|---|---|---|
| Rinnai RUC98iN | 0.95 | 199 | 9.8 | 1,199 | 15 |
| Ecosmart ECO 27 | 0.99 | 27 | 6.5 | 549 | 5 |
| Stiebel Eltron Tempra 24 | 0.99 | 24 | 4.0 | 599 | 7 |
| Bosch Therm 820 ES | 0.92 | 18 | 3.5 | 499 | 3 |
The table above compares some of the top electric tankless water heaters based on their energy efficiency ratings (EF), power in kilowatts (kW), flow rate in gallons per minute (GPM), price, and warranty period. Ecosmart ECO 27 and Stiebel Eltron Tempra 24 both have high energy efficiency ratings of 0.99, making them very efficient options. Rinnai RUC98iN offers a good balance of efficiency and flow rate, while Bosch Therm 820 ES has a slightly lower energy efficiency rating. This comparison allows consumers to evaluate which model best suits their energy efficiency needs.
What Are the Common Concerns and Misconceptions About Electric Tankless Water Heaters?
Common concerns and misconceptions about electric tankless water heaters include efficiency, installation costs, water temperature consistency, and lifespan.
- Efficiency
- Installation Costs
- Water Temperature Consistency
- Lifespan
To address these concerns and misconceptions, here are detailed explanations for each point:
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Efficiency:
The claim that electric tankless water heaters are inefficient is common but often based on misunderstandings. Electric tankless water heaters heat water on demand, reducing energy waste compared to traditional tank heaters that maintain a reservoir of hot water. According to the U.S. Department of Energy, these systems may provide energy savings between 8% to 34% compared to conventional models, depending on usage patterns. Therefore, many users may find their energy bills lower after switching to this type of system. -
Installation Costs:
Some consumers believe electric tankless water heaters carry exorbitant installation costs. While the initial purchase price may be higher than traditional heaters, the long-term savings often outweigh these expenses. The cost of installation varies based on home plumbing and electrical setup, with expenses ranging from $800 to $3,000, as reported by HomeAdvisor. Homeowners should consider the potential for lower utility bills and reduced maintenance expenses over the system’s lifespan. -
Water Temperature Consistency:
The misconception that electric tankless water heaters cannot provide consistent hot water typically arises from misunderstanding flow rates. These heaters deliver hot water at a set rate of gallons per minute (GPM). If the demand exceeds the rated capacity, users may experience fluctuations in temperature. However, many models have multiple units to increase GPM. The system’s ability to maintain temperature also depends on the unit’s specifications and the incoming water temperature. -
Lifespan:
Some believe electric tankless water heaters have shorter lifespans compared to traditional models. In fact, when properly maintained, electric tankless water heaters can last 20 years or more, according to the manufacturers. Traditional storage water heaters typically have a lifespan of about 10 to 15 years. Regular maintenance, such as descaling to prevent mineral buildup, can help extend the lifespan of tankless units.
These explanations clarify common concerns and misconceptions about electric tankless water heaters, allowing consumers to make informed decisions.
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