EcoSmart ECO 11 Electric Tankless Water Heater or EcoSmart ECO 8 Tankless Water Heater? Which EcoSmart Model to Buy
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When you compare the ecosmart eco 11 electric tankless water heater vs eco 8 tankless water models, you see two compact electric units from the same brand. Both use 240-volt power and self-modulating technology to heat water on demand. The main difference lies in their power output and physical size. The ECO 11 delivers 13 kW for higher flow needs, while the ECO 8 offers 8 kW in a smaller footprint. This guide breaks down the specs to help you choose.
Key differences
| Aspect | EcoSmart 13 kW Electric Tankless Water Heater | EcoSmart 8 kW Electric Tankless Water Heater |
|---|---|---|
| Wattage | 13 kW | 8 kW |
| Dimensions | 10 x 13.5 x 6.5 inches | 12 x 8 x 4 inches |
| Weight | 6.5 pounds | 4.75 pounds |
| Voltage | 240 V | 240 V |
| Fuel Type | Electric | Electric |
Which one should you choose?
Choose EcoSmart 13 kW Electric Tankless Water Heater if
- You need a higher flow rate for a kitchen sink in a warmer climate
- You have the electrical capacity for a 13 kW unit
- You prioritize heating power over compact size
Choose EcoSmart 8 kW Electric Tankless Water Heater if
- You are installing the unit in a tight space like a bathroom vanity
- You want a lighter unit that is easier to mount
- You only need hot water for a single sink in a mild climate
Verdict: The ECO 11 is the better choice if you need more hot water capacity for a kitchen or warmer regions. The ECO 8 is ideal for tight spaces or single sink applications where power demands are lower. Both are electric and require 240-volt wiring.
ECO 11 vs ECO 8 Comparison
Wattage and Output
The EcoSmart ECO 11 delivers 13 kW of power, while the ECO 8 provides 8 kW. Higher wattage generally means a greater capacity to heat water. The ECO 11 can handle more simultaneous demand. This makes it suitable for areas with colder incoming water temperatures. The ECO 8 is less powerful. You might find the ECO 8 sufficient for a single sink. The ECO 11 offers more robust heating capability. Choose the ECO 11 if you need higher flow rates. The ECO 8 is a lighter option for lower demand.
Physical Dimensions
Both units are compact, but their shapes differ. The ECO 11 measures 10 inches high, 13.5 inches wide, and 6.5 inches deep. The ECO 8 is 12 inches high, 8 inches wide, and 4 inches deep. The ECO 8 has a smaller footprint in width and depth. It may fit into tighter spaces like a narrow closet. The ECO 11 is wider but shorter. You need to check your available wall space. Both fit standard residential installations. Measure your installation area carefully before choosing. The ECO 8 offers a more slender profile for constrained areas.
Weight
Weight matters for mounting and support. The ECO 11 weighs 6.5 pounds. The ECO 8 weighs 4.75 pounds. The ECO 8 is lighter by nearly two pounds. This makes it easier to handle during installation. You might find the ECO 8 simpler to mount on a wall. The ECO 11 is slightly heavier due to its higher power components. Both are light enough for standard residential mounting. Ensure your wall can support the weight. The ECO 8 is the lighter choice for easy handling.
Voltage Requirements
Both heaters require 240-volt electrical service. The ECO 11 is configured for 240 volts. The ECO 8 also operates on 240 volts. You need a dedicated circuit for either unit. Check your electrical panel for available space. Both models use electric power directly. There is no difference in voltage compatibility. You must ensure your home has the correct wiring. Both units are compatible with standard residential 240-volt outlets. This is a tie for electrical requirements.
Build and Durability
Both units are built for durability. The ECO 8 is explicitly described as highly durable. The ECO 11 uses patented self-modulating technology. This technology adjusts power to maintain temperature. Both are made for long-term use. The ECO 8 is manufactured in China. The ECO 11 features advanced modulation. Both are compact and easy to use. You get reliable performance from either model. The ECO 8 emphasizes durability in its description. The ECO 11 focuses on technological efficiency. Both are solid choices for home use.
Which EcoSmart Model Fits You
Kitchen sink users
The ECO 11 provides 13 kW of power. This higher wattage ensures consistent hot water for kitchen tasks. It handles simultaneous demand better than the 8 kW model. If you need reliable output for dishwashing or handwashing, the extra capacity makes a practical difference in daily use.
Small space installers
The ECO 8 weighs only 4.75 pounds. Its dimensions are 12 x 8 x 4 inches. This compact size fits tight spots easily. The lighter weight simplifies mounting on walls. If your installation area is limited, this smaller unit offers a straightforward fit without requiring heavy-duty support structures.
Budget-conscious buyers
The ECO 8 delivers 8 kW of heating power. This lower wattage meets basic hot water needs for single fixtures. It uses standard 240-volt electricity. For users who do not require high-volume output, this model provides essential functionality. It serves as a practical option for low-demand applications.
The products compared
EcoSmart 13 kW Electric Tankless Water Heater
Best for: Single sink or small bathroom
- Fuel Type
- Electric
- Wattage
- 13 kW
- Voltage
- 240 V
- Dimensions
- 10 x 13.5 x 6.5 inches
- Weight
- 6.5 pounds
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The EcoSmart ECO 11 is a 13 kW electric tankless water heater designed for moderate climates. It operates on 240 volts and measures 10 x 13.5 x 6.5 inches. This unit weighs 6.5 pounds. It uses self-modulating technology to adjust energy use. It suits buyers needing a compact, wall-mounted solution for a single sink or small bathroom.
Pros
- 13 kW power output at 240 volts
- Compact 10 x 13.5 x 6.5 inch footprint
- Lightweight 6.5 pound build
- Patented self-modulating technology
Cons
- Limited to 13 kW output
- Requires 240-volt electrical connection
- Configured for moderate incoming water temperatures
Good fit if
- You need a compact unit for a single sink
- You have a 240-volt circuit available
- You live in a moderate climate
Skip if
- You need high flow for multiple fixtures
- You only have 120-volt power
- You live in a very cold climate
Verdict: EcoSmart ECO 11 Electric Tankless Water Heater fits single-sink applications in moderate climates. It offers a compact, lightweight design for easy wall mounting.
EcoSmart 8 kW Electric Tankless Water Heater
Best for: single sink point-of-use heating
- Fuel Type
- Electric
- Wattage
- 8-kW
- Dimensions
- 4 × 8 × 12 inches
- Weight
- 4.75 pounds
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The EcoSmart ECO 8 is an electric tankless water heater rated at 8 kW. It measures 12 x 8 x 4 inches and weighs 4.75 pounds. This compact unit is designed for point-of-use applications where space is limited. It suits you if you need a small, durable heater for a single sink or small bathroom. The electric operation makes it easy to install in standard household circuits.
Pros
- 8 kW electric heating element
- Compact 12 x 8 x 4 inch footprint
- Lightweight at 4.75 pounds
- Highly durable construction
Cons
- Lower 8 kW output compared to the 13 kW ECO 11
- Limited to electric power source only
- Small capacity may not support multiple simultaneous uses
Good fit if
- You need a heater for a single sink
- You have limited installation space
- You want a lightweight electric unit
Skip if
- You need high flow rates for showers
- You require gas heating power
- You need to heat water for multiple fixtures at once
Verdict: EcoSmart ECO 8 Electric Water Heater is a compact solution for low-demand applications. It fits well in tight spaces where an 8 kW electric heater is sufficient for your needs.
Specifications side by side
| Spec | EcoSmart 13 kW Electric Tankless Water Heater | EcoSmart 8 kW Electric Tankless Water Heater |
|---|---|---|
| Fuel Type | Electric | Electric |
| Wattage | 13 kW | 8-kW |
| Voltage | 240 V | not stated |
| Dimensions | 10 x 13.5 x 6.5 inches | not stated |
| Weight | 6.5 pounds | 4.75 pounds |
| Size | 12 x 8 x 4 | 12 x 8 x 4 |
| Color | color | White |
| Model | ECO 11 | ECO 8 |
Frequently asked questions
Which EcoSmart model is best for a single sink?
The EcoSmart ECO 11 fits single-sink applications in moderate climates. It offers a compact design for easy wall mounting. Its 13 kW output handles typical sink demands well. The ECO 8 is also suitable for low-demand point-of-use heating. Choose the ECO 11 if you need slightly more power for consistent flow.
What are the physical dimensions of the ECO 11?
The ECO 11 measures 13.5 inches in width, 10 inches in height, and 6.5 inches in length. It weighs 6.5 pounds. These dimensions make it easy to fit in tight spaces. You can mount it securely on a wall without taking up much room. Check your installation area to ensure it fits comfortably.
How heavy is the EcoSmart ECO 8 unit?
The EcoSmart ECO 8 weighs 4.75 pounds. It is lighter than the ECO 11 model. The unit measures 8 inches wide, 12 inches high, and 4 inches long. Its small footprint and low weight make it ideal for point-of-use installations. You can install it easily in cabinets or under sinks.
Do both heaters use the same voltage?
Yes, both the ECO 11 and ECO 8 operate on 240-volt power. This standard voltage is common for electric tankless water heaters. You must ensure your electrical panel can support the load. The ECO 11 uses 13 kW, while the ECO 8 uses 8 kW. Both draw power efficiently for on-demand heating.
Can the ECO 8 handle kitchen sink demands?
The ECO 8 is designed for single sink point-of-use heating. It provides 8 kW of power, which suits low-demand applications. It fits well in tight spaces. If you need consistent hot water for kitchen tasks, the ECO 11 with 13 kW is better. The ECO 8 works well for light use only.
What is the difference in wattage between the two models?
The ECO 11 delivers 13 kW of power, while the ECO 8 provides 8 kW. Higher wattage means a greater capacity to heat water. The ECO 11 handles more simultaneous demand. This makes it suitable for slightly higher usage. The ECO 8 is sufficient for basic, low-demand needs.