Eemax FlowCo 3.5 kW 120V or Eemax 8.0 kW Electric Tankless Water Heater? Which Eemax Model to Buy
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When you compare the eemax flowco 3 5 kw 120v vs 8 0 kw electric tankless water heater, you are looking at two distinct electric models from the same brand. Both units heat water on demand without a storage tank. The main difference lies in their power and intended use. One is a compact point-of-use heater for single fixtures, while the other is a higher-capacity unit for broader household needs. Your choice depends on your voltage supply and how much hot water you require.
Key differences
| Aspect | Eemax FlowCo 3.5 kW 120V Point of Use Water Heater | Eemax 8.0 kW Electric Tankless Water Heater |
|---|---|---|
| Voltage | 120 Volt | 240 V |
| Wattage | 3.5 Kilowatt | 8.0 kW |
| Installation Location | Point of Use | not listed |
| Dimensions | 9.75 x 5 x 3 inches | 4.5 x 14 x 18 inches |
| Weight | 3.1 pounds | 7.04 pounds |
Which one should you choose?
Choose Eemax FlowCo 3.5 kW 120V Point of Use Water Heater if
- You need hot water for a single sink or small appliance.
- Your electrical panel only has a 120-volt circuit available.
- You require a unit that mounts in any orientation due to space constraints.
Choose Eemax 8.0 kW Electric Tankless Water Heater if
- You need higher heating capacity for a shower or multiple fixtures.
- You have a 240-volt circuit ready for installation.
- You prefer a larger unit that can handle greater flow demands.
Verdict: The Eemax FlowCo 3.5 kW is best for single-point applications where space and 120V power are limited. The Eemax 8.0 kW unit suits users needing more heat output and who have the necessary 240V infrastructure. Choose the model that matches your electrical setup and hot water volume requirements.
Voltage, Wattage, and Size Comparison
Voltage and power
The Eemax FlowCo 3.5 kW 120V Point of Use Water Heater operates on a standard 120-volt circuit with 3.5 kilowatts of power. This lower wattage makes it suitable for single faucets where high flow is not needed. In contrast, the Eemax 8.0 kW Electric Tankless Water Heater requires a 240-volt circuit and delivers 8.0 kilowatts. This higher power output allows it to handle greater water demand, making it better for locations that need more heated water. You must ensure your electrical panel can support the specific voltage required by each unit. The 8.0 kW model demands more robust electrical infrastructure than the 120V FlowCo.
Physical dimensions
Size is a major factor for installation space. The FlowCo model is compact, measuring 9.75 inches in height, 5 inches in width, and 3 inches in length. It weighs only 3.1 pounds. This small footprint allows it to fit in tight spaces under sinks or in small cabinets. The 8.0 kW model is significantly larger, measuring 18 inches in length, 14 inches in width, and 4.5 inches in height. It weighs 7.04 pounds. If you have limited wall space or need to hide the unit, the FlowCo is the clear choice. The larger unit requires more room for mounting and maintenance access.
Installation location
The intended use location differs between the two models. The FlowCo is explicitly designed as a Point of Use water heater. This means it is meant to be installed close to the faucet it serves, reducing heat loss in pipes. The 8.0 kW model does not list a specific point-of-use designation in its key specs, suggesting it may be intended for broader applications or whole-house support depending on flow rates. If you only need to heat water for one sink, the FlowCo’s design is ideal. For areas requiring higher capacity or central heating, the 8.0 kW model offers more power, though its size may limit where it can be placed.
Mounting orientation
Flexibility in mounting can simplify installation. The FlowCo model features a specification that it mounts in any orientation. This allows you to install it vertically or horizontally, depending on your available space and pipe layout. The data for the 8.0 kW model does not specify mounting orientation options. If your installation space has constraints that prevent vertical mounting, the FlowCo offers greater flexibility. The 8.0 kW model may require specific mounting positions, so you should verify this with a professional installer before purchasing. The FlowCo’s versatility is a practical advantage for tight or irregular spaces.
Control features
Both units are electric and heat water on demand, but their control systems differ. The FlowCo includes self-diagnostics and intelligent controls, which help monitor its operation and potentially alert you to issues. It also features SafeStart technology for added safety. The 8.0 kW model’s provided data does not list specific control features or diagnostic capabilities. If you value built-in monitoring and safety features, the FlowCo provides more information about its internal operations. The 8.0 kW model may have controls, but they are not detailed in the available specs. For transparency and safety features, the FlowCo has the edge.
Which Eemax Tankless Heater Fits You
Single sink or bathroom faucet user
The 3.5 kW model runs on a standard 120V circuit. Its compact 9.75 by 5 by 3 inch size fits tight spaces. It provides a 41°F temperature rise at 0.5 GPM. SafeStart technology ensures stable operation. This unit is designed for point-of-use applications where flow needs are modest.
User needing higher hot water output
This 8.0 kW unit delivers more heating power. It requires a 240V circuit for proper operation. The larger dimensions of 18 by 14 by 4.5 inches accommodate the higher wattage components. This model is better suited for tasks requiring more consistent hot water volume than the smaller 3.5 kW option.
Installer with existing 120V wiring
You can use standard 120V electrical infrastructure. The unit mounts in any orientation, simplifying installation in various locations. Self-diagnostics help maintain performance. The cold water inlet only design keeps plumbing connections simple. This model integrates easily into existing low-voltage setups without major electrical upgrades.
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
The Eemax FlowCo SPEX3512 is a compact 3.5 kW electric point-of-use heater. It operates on 120V power and measures 9.75 x 5 x 3 inches. This unit provides a 41°F temperature rise at 0.5 GPM. It mounts in any orientation and features SafeStart technology. It is designed for single-fixture use where space is limited and standard electrical outlets are available.
Pros
- Compact 9.75 x 5 x 3 inch size
- 120V operation for standard outlets
- Mounts in any orientation
- SafeStart technology for protection
Cons
- Low 3.5 kW power limits flow rate
- 120V input requires 10 AWG wire
- Cold water inlet only
Good fit if
- You need a heater for a single sink
- You have limited space under a counter
- You want to use a standard 120V circuit
Skip if
- You need hot water for a shower
- You require high flow rates above 0.5 GPM
- You only have 240V circuits available
Verdict: Eemax FlowCo 3.5 kW 120V fits users needing heat for one faucet in tight spaces. It is not suitable for showers or multiple fixtures.
Eemax 8.0 kW Electric Tankless Water Heater
Best for: Small spaces with 240V power
- Fuel Type
- Electric
- Wattage
- 8.0 kW
- Voltage
- 240 V
- Dimensions
- 4.5 x 14 x 18 inches
- Weight
- 7.04 pounds
View on Amazon: Eemax 8.0 kW Electric Tankless Water Heater Affiliate link
This Eemax model delivers 8.0 kW of power on a standard 240V circuit. It measures 4.5 x 14 x 18 inches and weighs 7.04 pounds. The compact gray unit suits small spaces. You get reliable electric heating for point-of-use applications. It fits well where you need steady hot water without a large tank.
Pros
- 8.0 kW heating capacity
- 240V standard voltage
- Compact 4.5-inch depth
- Lightweight 7.04 pounds
Cons
- Requires 240V electrical connection
- Lower output than higher-kW models
- No digital display mentioned
Good fit if
- You have a 240V circuit available
- You need a compact unit for small spaces
- You want a reliable electric option
Skip if
- You only have 120V outlets
- You need high flow for multiple fixtures
- You prefer smart home integration
Verdict: Eemax 8.0 kW 240V Electric Heater fits small households or single-fixture needs where space is tight and 240V power is available.
Specifications side by side
| Spec | Eemax FlowCo 3.5 kW 120V Point of Use Water Heater | Eemax 8.0 kW Electric Tankless Water Heater |
|---|---|---|
| Fuel Type | Electric | Electric |
| Wattage | 3.5 Kilowatt | 8.0 kW |
| Installation Location | Point of Use | not stated |
| Voltage | 120 Volt | 240 V |
| Dimensions | 9.75 x 5 x 3 inches | 4.5 x 14 x 18 inches |
| Weight | 3.1 pounds | 7.04 pounds |
| Color | White | Gray |
| Model | SPEX3512 | HA008240 |
Frequently asked questions
Can I use the Eemax FlowCo 3.5 kW for a shower?
No, this model is not suitable for showers. It is designed strictly for single sink point-of-use heating. The 3.5 kW output is too low to handle the flow rate required for bathing. You should choose the 8.0 kW model if you need hot water for a shower or multiple fixtures.
What is the size difference between the two Eemax heaters?
The FlowCo 3.5 kW is significantly smaller than the 8.0 kW unit. It measures 9.75 inches in height, 5 inches in width, and 3 inches in length. The 8.0 kW model is larger, measuring 18 inches long, 14 inches wide, and 4.5 inches high. Choose the smaller unit for tight spaces.
Do I need a 240V circuit for the Eemax FlowCo 3.5 kW?
No, the FlowCo 3.5 kW operates on a standard 120V circuit. This makes it easier to install in existing outlets without upgrading your home's electrical panel. The 8.0 kW model requires a 240V connection, so ensure your electrical setup matches the specific voltage requirement of your chosen heater.
Which Eemax heater is lighter and easier to mount?
The FlowCo 3.5 kW is the lighter option. It weighs only 3.1 pounds, making it very easy to handle during installation. The 8.0 kW model weighs 7.04 pounds. If you are mounting the unit in a high or difficult-to-reach location, the lighter 3.5 kW model is more practical.
Can the Eemax 8.0 kW heater replace the FlowCo for a kitchen sink?
Yes, the 8.0 kW heater can replace the FlowCo for a kitchen sink. It provides more power and a higher temperature rise. However, it is physically larger and requires 240V power. Only upgrade if you have the necessary electrical capacity and space, as the 3.5 kW is sufficient for most single sinks.
What color options are available for these electric tankless water heaters?
The Eemax FlowCo 3.5 kW comes in white. The Eemax 8.0 kW model is available in gray. Both units have a compact design that fits under sinks or in utility closets. Choose the color that best matches your existing plumbing or cabinet aesthetics for a cleaner look.
Is the Eemax FlowCo 3.5 kW good for a bathroom vanity?
Yes, it is ideal for a bathroom vanity. It provides hot water for hand washing and face cleaning. The compact size fits easily under the sink. It is not powerful enough for the shower, so use it specifically for the faucet. This ensures efficient heating and saves energy for your daily routine.