Eemax FlowCo 3.5 kW 120V vs Eemax FlowCo 7.5 kW Electric Tankless Water Heater: Spec Comparison
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This eemax flowco 3 5 kw 120v vs flowco 7 5 kw electric tankless water heater comparison helps you pick the right unit for your needs. Both models are electric point-of-use heaters designed for compact spaces. They share the FlowCo series design and on-demand operation. The main difference lies in power and voltage. One uses 120 volts for lower output, while the other uses 240 volts for higher capacity. You need to match the voltage to your electrical setup.
Key differences
| Aspect | Eemax FlowCo 3.5 kW 120V Point of Use Water Heater | Eemax FlowCo 7.5 kW Electric Tankless Water Heater |
|---|---|---|
| Voltage | 120 Volt | 240V |
| Wattage | 3.5 Kilowatt | 7.5kw |
| Dimensions | 9.75 x 5 x 3 inches | 3.4 x 5.9 x 12.3 inches |
| Weight | 3.1 pounds | 3 pounds |
| Color | White | Gray |
Which one should you choose?
Choose Eemax FlowCo 3.5 kW 120V Point of Use Water Heater if
- You have a standard 120-volt outlet available.
- You need a heater for a single sink or small point-of-use application.
- You prefer a white unit that blends with light fixtures.
Choose Eemax FlowCo 7.5 kW Electric Tankless Water Heater if
- You have a 240-volt circuit ready for installation.
- You need higher heating capacity for slightly higher flow rates.
- You prefer a gray finish for your utility area.
Verdict: Choose the 3.5 kW model if you are limited to 120-volt circuits and need a small heater for a single sink. Select the 7.5 kW model if you have 240-volt power and require more heating capacity for tasks like a bathroom sink. Both units are compact and mount easily in any orientation.
Specs: 3.5kW vs 7.5kW FlowCo
Power output
The Eemax FlowCo 3.5 kW 120V Point of Use Water Heater delivers 3.5 kilowatts of heating power. It operates on a standard 120-volt circuit. This lower wattage suits light tasks like a bathroom sink. The Eemax FlowCo 7.5 kW Electric Tankless Water Heater provides 7.5 kilowatts. It requires a 240-volt connection. This higher power handles more demanding hot water needs. You get nearly double the heating capacity with the 7.5 kW model. Choose based on your electrical setup and hot water demand.
Voltage requirements
Electrical compatibility is a key difference. The 3.5 kW unit runs on 120 volts. It uses recommended 10-gauge wire. This allows installation in standard household outlets. The 7.5 kW model needs 240 volts. This typically requires a dedicated circuit and breaker. You must check your home’s electrical panel before buying the higher wattage unit. If you only have 120-volt access, the 3.5 kW heater is your only option. The 7.5 kW unit offers more power but needs specific wiring.
Physical size
Both units are compact, but dimensions vary. The 3.5 kW model measures 9.75 by 5 by 3 inches. It weighs 3.1 pounds. The 7.5 kW unit is larger at 12.3 by 5.9 by 3.4 inches. It weighs 3 pounds. The 7.5 kW model is taller and slightly wider. The 3.5 kW unit is shorter and thinner. Space constraints matter for tight cabinets. The 3.5 kW heater fits in tighter spots due to its smaller footprint.
Temperature control
The 3.5 kW model features self-diagnostics and intelligent controls. It specifies a 41°F temperature rise at 0.5 GPM. This helps you gauge performance at specific flow rates. The 7.5 kW product data does not list specific temperature rise or diagnostic features. Both use SafeStart technology for safety. However, the 3.5 kW unit provides explicit performance metrics. You can better predict output with the 3.5 kW specs. The 7.5 kW model lacks these detailed flow-rate temperature notes in the provided data.
Color options
Finish appearance differs between the two models. The Eemax FlowCo 3.5 kW 120V Point of Use Water Heater comes in white. This color blends well with light-colored cabinetry or walls. The Eemax FlowCo 7.5 kW Electric Tankless Water Heater is gray. Gray may suit modern or industrial-style installations. The choice depends on your aesthetic preference. White offers a clean look. Gray provides a neutral tone. Neither unit is specified as stainless steel.
Which Eemax FlowCo Model Fits You
Bathroom sink users on 120V circuits
The 3.5 kW 120V model suits light tasks like a bathroom sink. It fits standard electrical circuits without upgrades. Its compact 9.75 by 5 by 3 inch size mounts easily in tight spaces. You get on-demand heating with self-diagnostics and SafeStart technology for reliable performance.
Kitchen or shower users needing more power
The 7.5 kW 240V unit provides higher heating output for demanding uses. It requires a 240-volt circuit, which is common in kitchens or dedicated lines. The larger 12.3 by 5.9 by 3.4 inch frame accommodates the increased wattage. You get stronger flow rates for tasks requiring more hot water.
Users prioritizing smallest possible footprint
The 3.5 kW model measures just 9.75 by 5 by 3 inches. It weighs only 3.1 pounds, making it the lighter and smaller option. You can mount it in any orientation. This compact design is ideal for under-sink installations where space is extremely limited.
Users with existing 240V infrastructure
If you already have a 240-volt circuit, this 7.5 kW heater utilizes it fully. It delivers higher power output for faster heating. The gray unit measures 12.3 by 5.9 by 3.4 inches. You get robust performance without needing to upgrade your electrical supply to a higher amperage.
The products compared
Eemax FlowCo 3.5 kW 120V Point of Use Water Heater
Best for: Single sink point-of-use heating
- Fuel Type
- Electric
- Wattage
- 3.5 Kilowatt
- Installation Location
- Point of Use
- Voltage
- 120 Volt
- Dimensions
- 9.75 x 5 x 3 inches
- Weight
- 3.1 pounds
View on Amazon: Eemax FlowCo 3.5 kW 120V Point of Use Water Heater Affiliate link
This is a 3.5 kW, 120-volt electric tankless water heater designed for point-of-use installation. It measures 9.75 x 5 x 3 inches and weighs 3.1 pounds. The unit provides a 41°F temperature rise at 0.5 GPM. It mounts in any orientation and features SafeStart technology. It suits you if you need a compact, on-demand solution for a single sink.
Pros
- Compact 9.75 x 5 x 3 inch dimensions
- 120-volt electrical connection
- Mounts in any orientation
- SafeStart technology included
Cons
- Low 3.5 kW heating capacity
- Requires 10-gauge wire
- Limited to point-of-use applications
Good fit if
- You need a compact heater for a single sink
- You have a 120-volt circuit available
- You want a unit that mounts in any orientation
Skip if
- You need hot water for multiple fixtures
- You require a higher temperature rise than 41°F
- You only have a standard 15-amp circuit
Verdict: Eemax FlowCo 3.5 kW 120V is a compact point-of-use heater for single sinks. It fits you if you need a small, 120-volt unit for one faucet.
Eemax FlowCo 7.5 kW Electric Tankless Water Heater
Best for: single sink or small appliance hot water
- Wattage
- 7.5kw
- Voltage
- 240V
- Dimensions
- 3.4" x 5.9" x 12.3"
- Weight
- 3 pounds
View on Amazon: Eemax FlowCo 7.5 kW Electric Tankless Water Heater Affiliate link
The Eemax FlowCo 7.5 kW unit is a compact electric tankless water heater designed for point-of-use applications. It operates on a 240V circuit and delivers 7.5 kW of heating power. The device measures 3.4 x 5.9 x 12.3 inches and weighs just 3 pounds. This small footprint allows for easy installation in tight spaces. It suits you if you need a dedicated hot water source for a sink or small appliance rather than a whole-home system.
Pros
- 7.5 kW heating capacity for steady hot water flow
- Compact dimensions of 3.4 x 5.9 x 12.3 inches
- Lightweight design at only 3 pounds
- 240V operation for efficient electric heating
Cons
- Requires a 240V electrical circuit, which is less common than 120V outlets
- 7.5 kW output is lower than higher-capacity models for multiple fixtures
- Limited to point-of-use applications due to lower flow rate
Good fit if
- You need a dedicated hot water source for a single sink
- You have a 240V circuit available near the installation point
- You are installing in a tight space with limited clearance
Skip if
- You need to supply hot water to multiple fixtures simultaneously
- You only have standard 120V outlets available
- You require a high-flow unit for showers or tubs
Verdict: Eemax FlowCo 7.5 kW 240V Heater is a compact, lightweight solution for single-fixture hot water needs. It fits well in tight spaces where a 240V circuit is accessible, providing reliable point-of-use heating without taking up much room.
Specifications side by side
| Spec | Eemax FlowCo 3.5 kW 120V Point of Use Water Heater | Eemax FlowCo 7.5 kW Electric Tankless Water Heater |
|---|---|---|
| Fuel Type | Electric | not stated |
| Wattage | 3.5 Kilowatt | 7.5kw |
| Installation Location | Point of Use | not stated |
| Voltage | 120 Volt | 240V |
| Dimensions | 9.75 x 5 x 3 inches | 3.4" x 5.9" x 12.3" |
| Weight | 3.1 pounds | 3 pounds |
| Color | White | Gray |
| Model | SPEX3512 | B2282392 |
Frequently asked questions
What is the size difference between the 3.5 kW and 7.5 kW FlowCo units?
The 3.5 kW model is smaller in height and length. It measures 9.75 inches high, 5 inches wide, and 3 inches long. The 7.5 kW unit is taller in width but shorter in height. It measures 3.4 inches high, 5.9 inches wide, and 12.3 inches long. Both are compact for tight spaces.
Can I install the 7.5 kW heater on a standard 120-volt outlet?
No, you cannot. The 7.5 kW Eemax FlowCo operates on a 240-volt circuit. It requires a dedicated 240-volt electrical supply. The 3.5 kW model is the one designed for standard 120-volt circuits. You must check your home’s electrical setup before installing the higher wattage unit.
Which model weighs less?
The 7.5 kW model weighs slightly less. It tips the scale at 3 pounds. The 3.5 kW model weighs 3.1 pounds. Both units are lightweight and easy to handle during installation. The difference is minimal, so weight is not a deciding factor for most users.
What color are these water heaters?
The 3.5 kW unit is white. The 7.5 kW unit is gray. This difference is purely cosmetic. It does not affect performance or installation. You should choose based on which color blends better with your existing plumbing or cabinet aesthetics.
Is the 7.5 kW model suitable for a single sink?
Yes, it is suitable for single sinks. The 7.5 kW unit is designed for point-of-use heating. It works well for single fixtures where a 240-volt circuit is available. It provides reliable hot water without taking up much room. It is a compact solution for small appliance needs.
What are the model numbers for these Eemax heaters?
The 3.5 kW 120V model has the model number SPEX3512. The 7.5 kW 240V model uses the model number B2282392. You can use these numbers to identify the exact units. They help you find the correct replacement parts or verify specifications when ordering.