EcoSmart ECO 11 Electric Tankless Water Heater Review: Complete Guide
Are you tired of running out of hot water during your morning shower? Do you cringe every time you see your monthly energy bills climbing higher?
The EcoSmart ECO 11 Electric Tankless Water Heater might be the solution you’ve been searching for. This compact powerhouse promises endless hot water while slashing your energy costs by up to 50%.
But does it actually deliver on these bold claims? Let’s dive deep into this comprehensive review and find out if this water heater deserves a spot in your home.
Key Takeaways:
- Energy Efficiency Champion: The EcoSmart ECO 11 operates at an impressive 96% thermal energy efficiency, heating water only when you need it. This eliminates the standby heat loss common with traditional tank heaters.
- Space Saving Design: This unit is 93% smaller than standard electric water heaters, measuring just 11.5 inches tall. You can mount it virtually anywhere without sacrificing valuable storage space.
- Ideal Application Range: Perfect for 1 to 2 bathroom homes, point-of-use installations, office breakrooms, and small apartments. It delivers between 1.3 to 3.1 gallons per minute depending on inlet water temperature.
- Digital Precision Control: Features an easy-to-read LED temperature display with adjustment capabilities from 80°F to 140°F in precise one-degree increments.
- Professional Installation Required: You’ll need a 60-amp breaker and proper 240-volt electrical setup. Many users recommend hiring a licensed electrician to ensure safe, code-compliant installation.
EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 represents a smart investment for homeowners seeking to modernize their hot water systems. This 13-kilowatt electric tankless water heater brings instant hot water technology to your fingertips without the bulk and inefficiency of traditional storage tanks.
What sets this model apart is its patented self-modulating technology. The unit automatically adjusts power consumption based on your actual hot water demand.
When you turn on a single faucet, it uses less energy. When multiple fixtures run simultaneously, it ramps up to meet the demand. This intelligent approach means you’re never paying to heat water you’re not using.
The unit works best in warmer climates where groundwater temperatures stay relatively mild. In southern states where inlet water temperatures hover around 67°F, you can expect a solid 2.7 gallons per minute flow rate.
This is sufficient for one shower plus a sink running simultaneously. However, in colder northern regions where groundwater drops to 37°F, the flow rate decreases to approximately 1.3 gallons per minute.
How Does the EcoSmart ECO 11 Actually Work
Understanding the technology behind your water heater helps you maximize its performance. The ECO 11 uses flow-activated heating elements that spring into action the moment water begins flowing through the unit.
Unlike tank heaters that constantly maintain water temperature even when you’re sleeping or away from home, this system heats water on demand only.
Inside the compact housing, copper immersion heating elements rapidly transfer thermal energy to the water passing through the heat exchanger. The microprocessor-controlled system monitors incoming water temperature and adjusts power output to deliver your selected temperature consistently.
The self-modulating technology is the real star of the show. When you’re washing hands at a bathroom sink, the unit recognizes the lower flow rate and reduces power consumption accordingly.
Installation Requirements You Should Know
Before purchasing the EcoSmart ECO 11, verify your home’s electrical system can support it. This unit demands significant electrical capacity, which may require upgrades to older homes. You’ll need a minimum 240-volt electrical service with a dedicated 60-amp double-pole circuit breaker.
Most installations require 6-gauge copper wire running from your electrical panel to the water heater location. This heavy-gauge wiring handles the high amperage draw without overheating. Attempting to use undersized wire creates serious fire hazards and violates electrical codes.
Professional installation is strongly recommended unless you’re a licensed electrician. Many customers report spending between $200 to $500 for professional installation, depending on the complexity and local labor rates. This investment ensures code compliance and safe operation.
Top 3 Alternatives for EcoSmart ECO 11
Performance in Different Climate Zones
Climate plays a crucial role in tankless water heater performance. The ECO 11 shines brightest in warm climate regions where groundwater temperatures remain moderate year-round. In states like Florida, Texas, Arizona, and California, inlet water temperatures typically range from 60°F to 70°F during most of the year.
Under these favorable conditions, the unit delivers its maximum flow rate of approximately 3.1 gallons per minute. This supports comfortable single-shower usage with enough capacity left over for simultaneous hand washing or dishwashing at a single sink.
However, performance changes dramatically in colder climates. Northern states where groundwater temperatures plunge to 37°F during winter months see significantly reduced flow rates.
Energy Savings and Operating Costs
The biggest selling point for tankless water heaters is dramatic energy savings. Traditional tank heaters suffer from standby heat loss, constantly burning energy to maintain water temperature even when nobody’s using hot water. This accounts for approximately 10% to 20% of typical household energy consumption.
The EcoSmart ECO 11 eliminates standby losses completely. It draws power only when hot water flows through the system. For average households, this translates to 30% to 50% reduction in water heating costs. Actual savings depend on your usage patterns, local energy rates, and installation configuration.
Let’s break down real numbers. If your current tank water heater costs $40 per month to operate, switching to the ECO 11 could reduce this to approximately $20 to $28 monthly. Over the unit’s expected 15 to 20 year lifespan, you’re looking at total savings between $2,880 to $4,800.
Maintenance and Longevity Considerations
One of the most appealing aspects of the EcoSmart ECO 11 is its minimal maintenance requirements. Unlike tank heaters that need annual flushing to prevent sediment buildup, tankless units require significantly less attention.
However, regular maintenance is still important for optimal performance and longevity. In areas with hard water, mineral buildup poses the biggest threat to tankless water heaters. Calcium and magnesium deposits accumulate on heating elements over time, reducing efficiency and eventually causing failure.
Descaling every 12 to 24 months keeps the system running smoothly. This involves flushing the unit with white vinegar or commercial descaling solution.
The process takes about 45 minutes and requires basic plumbing knowledge. Many homeowners handle this themselves, while others prefer professional service costing $100 to $150 annually.
Water quality testing helps determine appropriate maintenance intervals. If your water hardness exceeds 7 grains per gallon, consider installing a whole-house water softener to protect your investment. Softened water dramatically extends heating element life and maintains peak efficiency.
Real User Experiences and Customer Feedback
Customer reviews paint a mostly positive picture with some important caveats. Users consistently praise the unlimited hot water capability and compact installation footprint. Many report successful installations in apartments, condos, and point-of-use applications like workshop sinks and guest bathrooms.
The energy savings claim holds up well in real-world testing. Multiple users report monthly electric bill reductions between $15 to $30, validating the efficiency claims. One homeowner noted their winter electric bill dropped to just $78.34 after installation, a significant decrease from their previous tank heater.
However, some users express frustration with temperature consistency issues. Several reviews mention experiencing cold water bursts between hot water draws, a phenomenon called cold water sandwich effect. This occurs when residual hot water in pipes clears out, briefly exposing you to cold water before the heater catches up.
Flow rate limitations in cold climates generate mixed feedback. Users in northern states report adequate performance for single fixture use but struggle when attempting simultaneous hot water demands.
Comparing ECO 11 to Traditional Tank Heaters
Understanding the fundamental differences between tankless and tank water heaters helps you make an informed decision. Traditional 40 to 50 gallon tank heaters store and constantly heat a large volume of water. This provides instant hot water at fixtures without wait time but wastes energy maintaining temperature 24/7.
The ECO 11 takes the opposite approach, heating water instantaneously as needed. This eliminates standby energy waste but introduces a slight delay before hot water reaches fixtures. Users report wait times ranging from 10 to 30 seconds depending on distance from the heater to the fixture.
Recovery rate presents another key difference. Tank heaters deliver their full stored capacity before requiring recovery time.
If four people take back-to-back showers, the last person often endures cold water. The ECO 11 provides continuous hot water indefinitely at its rated flow rate, though that flow rate is lower than tank heater output.
Space requirements favor tankless systems dramatically. A typical 50-gallon tank heater measures approximately 60 inches tall by 24 inches diameter, consuming significant floor space. The ECO 11’s compact wall-mounted design frees up that valuable real estate for storage or other uses.
Upfront costs tell a different story. Quality 50-gallon electric tank heaters cost $400 to $700 installed. The ECO 11 typically runs $190 to $250 for the unit plus $200 to $500 for professional installation, totaling $390 to $750. The cost comparison is nearly even initially, with savings accruing over time through reduced energy consumption.
Best Applications and Use Cases
The EcoSmart ECO 11 excels in specific applications while struggling in others. Understanding these strengths and limitations helps match the product to appropriate situations.
Ideal applications include:
Point-of-use installations where the heater sits close to fixtures deliver outstanding performance. Mounting the ECO 11 under a bathroom vanity or near a kitchen sink provides rapid hot water delivery with minimal piping distance.
Small apartments and condos with modest hot water demands benefit greatly. Single occupants or couples without simultaneous high-volume needs enjoy excellent service from this capacity level.
Secondary bathrooms and guest suites that see occasional use rather than constant demand work perfectly. The energy savings multiply since the heater draws zero power during extended periods between uses.
Workshop and garage applications where users need occasional hot water for cleaning tasks appreciate the compact installation and on-demand convenience.
Less suitable applications include:
Large family homes where multiple bathrooms operate simultaneously exceed the ECO 11’s capacity. Homes with teenagers taking long showers while laundry and dishwasher run need higher capacity models.
Cold climate primary water heating where inlet temperatures drop below 45°F regularly struggle to maintain adequate flow rates. These situations require higher kilowatt units like the ECO 27 or ECO 36.
Tips for Maximizing ECO 11 Performance
Getting the most from your EcoSmart ECO 11 requires some optimization strategies. These practical tips help you achieve the best possible performance and efficiency.
Install low-flow fixtures throughout your home to maximize the effective hot water delivery. Modern aerators and showerheads providing 1.5 to 1.8 gallons per minute flow work beautifully with the ECO 11 while maintaining comfortable water pressure.
Strategic placement matters enormously. Installing the unit as close as possible to your primary hot water fixtures minimizes wait time and reduces heat loss in pipes. Some homeowners install multiple small tankless units at different points of use rather than one central unit.
Troubleshooting Common Issues
Understanding common problems and solutions saves time and frustration. Here are the most frequent issues ECO 11 owners encounter.
No hot water flow typically indicates insufficient flow rate activation. Check that your fixtures flow at least 0.25 gallons per minute. Ultra-low-flow aerators may prevent heater activation.
Lukewarm or cool water suggests the heater can’t keep up with demand. Reduce flow rate at fixtures or lower temperature expectations. In cold climates, this often requires adjusting usage patterns.
Temperature fluctuations point to inconsistent water flow or sediment buildup on heating elements. Descale the unit and ensure consistent fixture flow rates.
Error codes displayed on the LED panel indicate specific problems. The user manual provides detailed troubleshooting steps for each code. Common codes relate to flow sensor issues, temperature sensor problems, or heating element malfunctions.
Is the EcoSmart ECO 11 Right for You
After examining every angle of the EcoSmart ECO 11, we can draw clear conclusions about who benefits most from this water heater. This unit represents an excellent value proposition for the right applications.
You should seriously consider the ECO 11 if:
You live in a warm climate where inlet water temperatures stay above 60°F most of the year. Your household consists of one to three people with moderate hot water needs. You’re installing point-of-use heating for specific fixtures or secondary bathrooms. Energy efficiency and reduced operating costs rank high in your priorities. You have or can install adequate electrical infrastructure to support the unit.
Consider alternative options if:
You live in cold climates with winter groundwater temperatures below 45°F. Your household includes four or more people with heavy simultaneous hot water demands. You need whole-house heating for a large home with multiple bathrooms. Your electrical panel can’t accommodate the required 60-amp breaker without expensive upgrades.
The bottom line? The EcoSmart ECO 11 delivers on its promises when properly matched to appropriate applications. It provides genuine energy savings, unlimited hot water capacity at its flow rate, and space-saving convenience. However, it’s not a universal solution for every household. Carefully assess your specific needs, climate conditions, and usage patterns before purchasing.
Frequently Asked Questions
What size breaker do I need for the EcoSmart ECO 11?
You need a dedicated 60-amp double-pole circuit breaker for the EcoSmart ECO 11. The unit draws 54.2 amps at full load, requiring the 60-amp breaker for safe operation with appropriate headroom. You must also use 6-gauge copper wire for the circuit. Never attempt to run this heater on a smaller breaker as this creates serious fire hazards and violates electrical codes.
Can the ECO 11 handle two showers at once?
The ECO 11 struggles with two simultaneous showers in most situations. At typical inlet water temperatures, the unit provides approximately 2.7 gallons per minute flow rate. Since standard showerheads use 2.0 to 2.5 GPM, you cannot maintain adequate temperature and pressure for two showers simultaneously. Consider upgrading to the ECO 27 model for whole-house applications requiring multiple concurrent hot water demands.
How long does the EcoSmart ECO 11 last?
With proper maintenance, the EcoSmart ECO 11 typically lasts 15 to 20 years, significantly longer than traditional tank water heaters. Regular descaling every 12 to 24 months prevents mineral buildup that causes premature failure. Hard water areas benefit from whole-house water softener installation to maximize longevity. The unit includes a limited lifetime warranty on electronics and heat exchanger when properly registered.
Does the ECO 11 work in cold climates?
The ECO 11 works in cold climates but with reduced performance. When inlet water temperatures drop to 37°F during winter months, flow rates decrease to approximately 1.3 to 1.5 gallons per minute. This requires low-flow fixtures and may not provide comfortable hot water for standard showerheads. Cold climate homeowners should consider higher capacity models like the ECO 18 or ECO 27 for better winter performance.
What maintenance does the EcoSmart ECO 11 require?
The ECO 11 requires minimal maintenance compared to tank heaters. Descale the unit every 12 to 24 months by flushing with white vinegar or commercial descaling solution. This 45-minute process removes mineral buildup from heating elements. Check and clean the inlet screen filter quarterly to prevent debris accumulation. In hard water areas, consider installing a water softener to reduce maintenance frequency and extend component life.
Can I install the EcoSmart ECO 11 myself?
While mechanically straightforward, ECO 11 installation requires licensed electrician skills in most jurisdictions. The unit demands 240-volt electrical work with 60-amp breaker installation and proper wire sizing. Incorrect installation creates serious shock and fire hazards. Most building codes require permits and inspections for tankless water heater installations. Professional installation costs between $200 to $500 depending on complexity and local rates.
