Eemax EEM24013 Electric Tankless Water Heater Alternatives: 6 Similar Picks Compared
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The eemax eem24013 electric tankless water heater is a compact unit designed for single-sink applications. It measures just 3.75 x 8 x 11.5 inches and uses self-modulating technology to heat water only when needed. This small footprint makes it ideal for tight spaces under sinks or in cabinets where storage is limited. You get endless hot water for handwashing or light cleaning without the bulk of a traditional tank.
However, you might need different specifications for your home. Perhaps you require higher flow rates for whole-house use or dual fuel options for an RV. The alternatives listed here were chosen because their specs overlap with the original. This list covers 6 similar picks that match the Eemax EEM24013 electric tankless water heater alternatives criteria. Each option offers distinct advantages in size, voltage, or capacity. You can compare these units to find the right fit for your specific plumbing and electrical setup.
Our top pick: Eemax Compact Electric Tankless Water Heater.
How Alternatives Compare to Eemax
Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank
The Thermomate 6.5-Gallon Mini-Tank uses a small storage tank rather than instant heating. It measures 14.6 x 17.7 x 21.2 inches and weighs 26.5 pounds. This makes it significantly larger than the Eemax unit. It operates on 120V power, which matches the Eemax electrical requirements. The tank provides steady hot water for handwashing and dish rinsing. It cannot support continuous high-volume use like a whole-house system. You should choose this if you need reliable point-of-use water without upgrading your electrical panel. It offers consistent temperature stability that tankless models may struggle with during long showers.
Suburban 6-Gallon Gas and Electric RV Water Heater
The Suburban RV Water Heater is designed for mobile living spaces. It measures 12.7 x 12.7 x 12.7 inches and weighs 32.9 pounds. This cubic shape fits tight RV compartments better than the rectangular Eemax. It offers dual fuel flexibility, heating via gas or electric. The Eemax relies solely on electric power. This unit has a 4.0-gallon capacity, providing a buffer of hot water. It is built for durability in moving vehicles. You should pick this if you travel in an RV and need versatile heating options. It sacrifices the compact under-sink footprint of the Eemax for ruggedness and fuel choice.
Rheem 18kW 240V Electric Tankless Water Heater
The Rheem RTEX-18 is a whole-house unit with 18kW power. It measures 14.5 x 18.5 x 3.5 inches and weighs 14.8 pounds. It requires a 240V electrical connection, unlike the standard 120V Eemax. This higher voltage allows it to heat water for multiple fixtures simultaneously. It features precise digital control and serviceable copper elements. The Eemax cannot serve more than one sink at a time. You should choose this Rheem model if you have the necessary electrical infrastructure. It provides stable hot water for entire homes. It gives up the tiny size of the Eemax for significantly higher flow capacity and versatility.
Camplux 6-Gallon 120V Mini-Tank Water Heater
The Camplux ME60 is a 6-Gallon mini-tank water heater. It measures 15.8 x 15.8 x 18 inches and weighs 25.4 pounds. This white unit is larger than the blue Eemax tankless model. It operates on 120V power, matching the Eemax electrical needs. The storage tank provides a reserve of hot water for small bathrooms or kitchens. It fits well where dedicated outlets are available. You should select this if you prefer stored hot water over instant heating. It delivers reliable point-of-use performance. It sacrifices the space-saving design of the Eemax for the convenience of pre-heated water availability.
VEVOR 6-Gallon 1600W Electric Water Heater
The VEVOR 6-Gallon heater is a gray point-of-use unit. It measures 14.2 x 14.2 x 22.6 inches and weighs 30.9 pounds. This model is taller and heavier than the compact Eemax. It operates on 120V power, similar to the Eemax. The storage tank provides hot water for single sinks or small bathrooms. It is not suitable for whole-house demands. You should pick this if you need a durable option for RVs or rentals. It offers reliable performance in tight spaces. It gives up the minimal footprint of the Eemax for the convenience of a small tank reservoir.
Thermomate 18kW Electric Tankless Water Heater
The Thermomate ET180 is an 18kW electric tankless heater. It measures 13.1 x 13.1 x 17.1 inches and is designed for indoor installation. It requires a 240V electrical connection, unlike the Eemax. This higher voltage supports high flow rates for multiple fixtures. It offers precise control for homes with strong wiring. The Eemax is limited to single-sink applications. You should choose this Thermomate model if you need high performance and have the electrical capacity. It provides greater hot water output. It sacrifices the compact under-sink size of the Eemax for whole-house capability and higher power.
Quick picks
Our 7 picks
Eemax Compact Electric Tankless Water Heater
Best for: Single sink space-saving installation
- Fuel Type
- Electric
- Dimensions
- 3.75 x 8 x 11.5 inches
View on Amazon: Eemax Compact Electric Tankless Water Heater
The Eemax EEM24013 is a blue, electric tankless water heater designed for space-saving installations. It measures 3.75 by 8 by 11.5 inches, making it significantly smaller than the 6-gallon mini tanks on this list. The unit uses self-modulating technology to adjust energy input based on demand. This provides endless hot water without the need for a storage tank. It suits buyers who need a compact, point-of-use solution for a single sink or small area.
Pros
- Compact dimensions of 3.75 x 8 x 11.5 inches
- Self-modulating technology adjusts energy input automatically
- Provides endless hot water on demand
- Electric fuel type for easy integration
Cons
- Small physical size limits flow rate for multiple fixtures
- No display or remote control mentioned in specifications
- Lacks the higher capacity of 6-gallon alternatives
Good fit if
- You need a heater for a single sink
- You have limited wall space for installation
- You want a compact electric unit
Skip if
- You need hot water for a whole house
- You require a large storage tank capacity
- You need high flow for multiple showers
Verdict: Eemax EEM24013 Compact Electric Unit fits users who need a tiny, electric heater for a single sink. It saves space but cannot serve multiple fixtures simultaneously.
Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank
Best for: single sink point-of-use hot water
- Fuel Type
- Electric
- Wattage
- 1.44 kW
- Capacity
- 6.5 Gallons
- Voltage
- 120V
- Temperature Control
- 50°F to 149°F
- Certification
- UL Listed
View on Amazon: Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank
This ThermoMate mini tank water heater offers 6.5 gallons of stored hot water for point-of-use applications. It runs on a standard 120V outlet with 1.44 kW power, drawing 12 amps. The unit features a glass-lined tank for durability and adjustable thermostat settings between 50°F and 149°F. Its compact 17.7-inch square footprint allows for under-sink mounting. This model suits you if you need instant hot water at a single sink without requiring a dedicated high-voltage circuit.
Pros
- 120V plug-in connection for easy installation
- 6.5-gallon capacity for moderate demand
- Adjustable thermostat from 50°F to 149°F
- Glass-lined tank for corrosion resistance
Cons
- 1.44 kW output limits flow rate
- 6.5-gallon tank reheats slower than tankless
- 1-year parts warranty is shorter than industry standard
Good fit if
- You need hot water for a single bathroom sink
- You have only a 120V outlet available
- You want a compact unit for under-counter mounting
Skip if
- You require high flow rates for showers
- You need a 240V connection for higher power
- You want unlimited hot water without recovery time
Verdict: ThermoMate 6.5 Gallon 120V Mini Tank fits renters or homeowners needing reliable hot water at one sink without electrical upgrades. It delivers steady heat for handwashing and dish rinsing but cannot support continuous high-volume use.
Suburban 6-Gallon Gas and Electric RV Water Heater
Best for: RV hot water with dual fuel flexibility
- Fuel Type
- Electric, Gas
- BTU
- 12,000 BTU/h
- Wattage
- 1,440 W
- Capacity
- 6 Gallon
- Dimensions
- 12.69 x 12.69 x 19.19 in
- Use
- RV
View on Amazon: Suburban 6-Gallon Gas and Electric RV Water Heater
This Suburban unit combines gas and electric heating for RV use. It holds 6 gallons with a 4.0-gallon usable capacity. The 12,000 BTU gas burner heats water quickly. An optional 1,440-watt electric element allows campsite power use. The porcelain-lined steel tank resists corrosion. You get flexible power options and durable construction for reliable hot water on the road.
Pros
- Dual fuel capability with 12,000 BTU gas and 1,440W electric options
- Porcelain-lined steel tank for durability and corrosion resistance
- Replaceable anode rod simplifies maintenance and extends lifespan
- Efficient heat transfer design via exclusive flue tube technology
Cons
- Small usable capacity of 4.0 gallons limits simultaneous use
- Electric heating requires a separate optional element purchase
- Shorter 2-year limited warranty compared to residential standards
Good fit if
- You need hot water in an RV with limited space
- You want the flexibility to use gas or electric power
- You prioritize durable construction with corrosion protection
Skip if
- You require high-volume hot water for multiple bathrooms
- You need a full residential-sized tank water heater
- You want a unit with a built-in electric element
Verdict: Suburban SW6DE 6-Gallon RV Water Heater fits RV travelers who need compact, durable hot water with dual fuel flexibility. It suits those who value easy maintenance and efficient heating in a small footprint.
Rheem 18kW 240V Electric Tankless Water Heater
Best for: Whole-house electric hot water with precision
- Fuel Type
- Electric
- Flow Rate
- 4.4 GPM
- Wattage
- 18 kW
- Voltage
- 240 V
- Temperature Control
- ±1°F
- Dimensions
- 3.5 x 14.5 x 18.5 inches
View on Amazon: Rheem 18kW 240V Electric Tankless Water Heater
This Rheem unit delivers up to 4.4 GPM at 18 kW. It features external digital thermostatic control with ±1°F accuracy. The copper immersion elements are field-serviceable. Its compact 3.5-inch height saves wall space. You get precise temperature management for whole-house use. The 240V design suits dedicated circuits. It offers reliable performance for standard residential demands.
Pros
- 18 kW power output for strong flow
- Digital display with ±1°F accuracy
- Field-serviceable copper immersion elements
- Compact 3.5-inch depth
Cons
- Requires 240V dedicated circuit
- No remote control included
- Limited to electric fuel type
Good fit if
- You need precise temperature control
- You have a 240V circuit available
- You want field-serviceable components
Skip if
- You only have 120V outlets
- You need gas fuel type
- You require remote operation
Verdict: Rheem RTEX-18 18kW Electric Tankless Water Heater fits homes needing stable hot water with precise digital control. It suits users with 240V capacity who value serviceable copper elements over gas complexity.
Camplux 6-Gallon 120V Mini-Tank Water Heater
Best for: single sink or small bathroom hot water needs
- Fuel Type
- Electric
- Wattage
- 1,440 W
- Capacity
- 6 gallons
- Voltage
- 120 V
- Temperature Control
- 50°F to 149°F
- Certification
- UL, CSA
View on Amazon: Camplux 6-Gallon 120V Mini-Tank Water Heater
The Camplux ME60 is a 6-gallon point-of-use electric water heater designed for under-sink installation. It runs on 120V power with 1,440W heating capacity. The unit features a glass-lined tank and adjustable thermostat settings from 50°F to 149°F. Its compact dimensions of 18 x 15.75 x 15.5 inches fit tight spaces. This model suits single sinks or small bathrooms where instant hot water is needed without complex wiring.
Pros
- 6-gallon capacity provides stored hot water for point-of-use
- 120V plug-in design allows simple installation near standard outlets
- Adjustable thermostat ranges from 50°F to 149°F
- Glass-lined tank offers corrosion resistance for longevity
Cons
- 1,440W heating element provides slower recovery than higher-wattage units
- Limited to 120V circuits, requiring dedicated outlet access
- Small 6-gallon tank may deplete quickly during continuous use
Good fit if
- You need hot water for a single sink or small bathroom
- You have a 120V outlet available near the installation point
- You want a compact unit that fits under standard cabinetry
Skip if
- You require high-flow hot water for multiple fixtures simultaneously
- You only have 240V electrical circuits available
- You need a whole-house water heating solution
Verdict: Camplux 6-Gallon 120V Electric Mini Tank delivers reliable point-of-use hot water for small spaces. It fits well in kitchens or bathrooms where a dedicated 120V outlet is available and flow demands remain low.
VEVOR 6-Gallon 1600W Electric Water Heater
Best for: under-sink and RV point-of-use applications
- Fuel Type
- Electric
- Wattage
- 1600 W
- Capacity
- 6 gal
- Voltage
- 120 V
- Dimensions
- 22.6 x 14.2 x 14.2 inches
- Weight
- 30.9 pounds
The VEVOR 6-gallon electric tankless water heater delivers 1600 watts of heating power at 120 volts. Its compact 22.6-inch height fits under sinks or in small utility spaces. The unit features an LED display and rotary knob for simple temperature control. Foam insulation helps maintain water temperature efficiently. It is designed for single apartments, RVs, or as a supplementary source for guest bathrooms and kitchen sinks.
Pros
- 1600W heating element for fast water heating
- LED display shows heating status clearly
- 20mm foam insulation minimizes heat loss
- IPX4 waterproof rating for safety
Cons
- Lower wattage than whole-home alternatives
- Smaller 6-gallon capacity limits simultaneous use
- Rotary knob lacks digital precision
Good fit if
- You need a compact unit for under-sink installation
- You want a supplementary heater for a guest bathroom
- You require simple knob and LED controls
Skip if
- You need high-flow whole-home heating
- You require precise digital temperature settings
- You need a unit with smart app connectivity
Verdict: VEVOR 6-Gallon Electric Point-of-Use Heater suits renters or RV owners needing reliable, space-saving hot water for a single sink or small bathroom. It is not suitable for whole-house demands.
Thermomate 18kW Electric Tankless Water Heater
Best for: High-flow indoor needs with strong wiring
- Fuel Type
- Electric
- Flow Rate
- Up to 4.4GMP
- Wattage
- 18kW
- Installation Location
- Indoor
- Voltage
- 240V
- Temperature Control
- 80°F to 140°F, ±1°F
View on Amazon: Thermomate 18kW Electric Tankless Water Heater
This ThermoMate unit delivers 18kW of power at 240 volts, providing up to 4.4 gallons per minute of hot water. It features a slim 17.1 by 13.12 by 3.12 inch design for wall mounting. The digital display allows precise temperature control in 1-degree increments. It is built for indoor use and includes ETL certification for safety. This model suits households needing high flow rates in a compact footprint.
Pros
- 18kW heating element for strong performance
- High flow rate of up to 4.4 GPM
- Slim profile fits tight spaces
- Digital display with 1-degree adjustment
- ETL certified for safety
Cons
- Requires two 40-amp double-pole breakers
- Needs 8 AWG wire gauge
- Indoor installation only
Good fit if
- You need high flow rates for multiple fixtures
- You have the electrical capacity for 80 amps
- You want a compact wall-mounted unit
Skip if
- You only have 100-amp electrical service
- You need outdoor installation
- You require lower power consumption
Verdict: ThermoMate 18kW Electric Tankless Heater offers high flow and precise control for homes with adequate electrical infrastructure. It fits buyers who prioritize performance and space efficiency over easy installation.
Specifications side by side
| Spec | Eemax Compact Electric Tankless Water Heater | Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank | Suburban 6-Gallon Gas and Electric RV Water Heater | Rheem 18kW 240V Electric Tankless Water Heater | Camplux 6-Gallon 120V Mini-Tank Water Heater | VEVOR 6-Gallon 1600W Electric Water Heater | Thermomate 18kW Electric Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Electric | Electric | Electric, Gas | Electric | Electric | Electric | Electric |
| Flow Rate | not specified | not specified | not specified | 4.4 GPM | not specified | not specified | Up to 4.4GMP |
| BTU | not specified | not specified | 12,000 BTU/h | not specified | not specified | not specified | not specified |
| Wattage | not specified | 1.44 kW | 1,440 W | 18 kW | 1,440 W | 1600 W | 18kW |
| Installation Location | not specified | not specified | not specified | not specified | not specified | not specified | Indoor |
| Capacity | not specified | 6.5 Gallons | 6 Gallon | not specified | 6 gallons | 6 gal | not specified |
| Voltage | not specified | 120V | not specified | 240 V | 120 V | 120 V | 240V |
| Temperature Control | not specified | 50°F to 149°F | not specified | ±1°F | 50°F to 149°F | not specified | 80°F to 140°F, ±1°F |
| Certification | not specified | UL Listed | not specified | not specified | UL, CSA | not specified | ETL |
| Dimensions | 3.75 x 8 x 11.5 inches | 17.7"H x 17.7"W x 14.6"D | 12.69 x 12.69 x 19.19 in | 3.5 x 14.5 x 18.5 inches | 18 x 15.75 x 15.5 inches | 22.6 x 14.2 x 14.2 inches | 17.12" x 13.12" x 3.12" |
| Use | not specified | Under Sink | RV | Whole House | not specified | not specified | not specified |
| Weight | not specified | 26.5 pounds | 32.9 pounds | 14.8 pounds | 25.4 pounds | 30.9 pounds | not specified |
| Color | Blue | white,blue | Steel | Gray | White | Gray | Gray |
| Model | EEM24013 | ES700 | 5239A | RTEX-18 | ME60 | FJI-POR-30S2 | ET180 |
| Size | not specified | 6.5 Gallon | 6 Gallon | Small | not specified | 6 Gal | 240V/18kW |
If you need separate drinking filtration, compare apec water apec tankless ro water alternatives by physical dimensions and flow rate.
Frequently asked questions
Can these alternatives replace the Eemax for whole-house use?
Most options here are point-of-use units. The Rheem RTEX-18 and Thermomate ET180 are designed for whole-house needs. They use 18 kW power and 240V circuits. Other models like the Thermomate mini-tank or Camplux ME60 are limited to single sinks. Choose a whole-house model only if your electrical panel supports the higher voltage and amperage requirements.
Which alternative is best for small spaces like an RV?
The Suburban SW6DE is built for RV travel. It offers dual fuel flexibility with gas and electric options. It measures 12.7 inches on each side. The VEVOR FJI-POR-30S2 is also suitable for RV point-of-use. Both provide compact hot water solutions that fit tight vehicle spaces without requiring major electrical upgrades.
Do I need a 240V outlet for these tankless heaters?
Only the Rheem RTEX-18 and Thermomate ET180 require 240V power. They deliver 18 kW of heating capacity. The Eemax EEM24013, Thermomate ES, Camplux ME60, and VEVOR FJI-POR-30S2 operate on 120V circuits. You can install the 120V models on standard household outlets. Check your home wiring before selecting a high-power 240V unit.
How do the dimensions of these units compare to the Eemax?
The Eemax is the most compact at 3.75 x 8 x 11.5 inches. The Rheem RTEX-18 is slightly wider at 14.5 inches wide but only 3.5 inches high. The Thermomate ES is larger at 14.6 x 17.7 x 21.2 inches. The Suburban model is a cube at 12.7 inches per side. Measure your installation space carefully.
Are these electric heaters suitable for renters?
Yes, several models are renter-friendly. The Thermomate ES and Camplux ME60 use 120V power and plug into standard outlets. They do not require electrical panel upgrades. The VEVOR FJI-POR-30S2 is also a 120V point-of-use unit. These options allow you to install hot water without permanent modifications or professional electrician visits.
What is the capacity difference between the mini-tanks and tankless units?
The mini-tanks store hot water. The Thermomate ES holds 6.5 gallons. The Camplux ME60 and VEVOR FJI-POR-30S2 hold 6 gallons. The Suburban unit is listed as 6 gallons with a 4.0-gallon attribute. Tankless units like the Rheem and Thermomate ET180 heat water instantly. They do not store water, providing continuous flow as long as power is available.