Best Eemax Tankless Water Heaters: 15 Models Compared
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Finding the best eemax tankless water heaters requires matching electrical supply and fixture demands to the right hardware. Eemax offers electric models ranging from 3-pound point-of-use heaters and mini tanks to 36 kW systems operating on 120V or 240V circuits.
The Eemax Compact Electric Tankless Water Heater leads the lineup because its 3.75 by 8 by 11.5-inch footprint and self-modulating energy management fit tight point-of-use installations. We compared 15 models based on the specifications published on their product listings to help you select the right configuration.
Our top pick: Eemax FlowCo 3.5 kW 120V Point of Use Water Heater.
Quick picks
Our 15 picks
Eemax FlowCo 3.5 kW 120V Point of Use Water Heater
Best for: single-sink handwashing with 120-volt wiring
- 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
This point-of-use electric tankless water heater delivers on-demand hot water from a compact 9.75 by 5 by 3-inch frame. Running on a standard 120-volt connection at 3.5 kilowatts, it produces a 41°F temperature rise at 0.5 gallons per minute. You can mount the 3.1-pound unit in any orientation near your sink. It suits you if you need a dedicated single-fixture handwashing setup fed strictly by a cold water line.
Pros
- Operates on 120-volt electrical supply at 3.5 kW
- Mounts in any physical orientation
- Compact 9.75 x 5 x 3-inch profile weighing 3.1 pounds
- Provides 41°F temperature rise at 0.5 GPM
Cons
- Accepts cold water supply inlet only
- Temperature output fluctuates based on flow rate
- Requires 10 AWG wire size
Good fit if
- You need dedicated hot water for a single low-flow sink fixture.
- You have a 120-volt electrical circuit wired for 3.5 kW.
- You need a compact heater that fits tight spaces in any orientation.
Skip if
- You need to supply multiple fixtures or higher flow rates above 0.5 GPM.
- You plan to feed the heater with preheated water.
Verdict: Eemax FlowCo 3.5 kW 120V Point of Use Water Heater delivers compact heating for single-fixture handwashing without requiring 240-volt electrical service. Its multidirectional mounting lets you position it easily inside tight sink cabinets.
Eemax 1.5-Gallon Mini Tank Electric Water Heater
Best for: under-sink single-fixture hand-washing setups
- Fuel Type
- Electric
- Installation Location
- Wall and floor mountable
- Capacity
- 1.5-Gallon
- Voltage
- 120V
- Temperature Control
- 50°F to 140°F
- Dimensions
- 12.50 x 11.00 x 10.00 inches
View on Amazon: Eemax 1.5-Gallon Mini Tank Electric Water Heater
This 1.5-gallon electric mini tank water heater supplies dedicated hot water at point-of-use locations such as under a sink. It plugs directly into a standard 120V outlet and features an adjustable temperature range from 50°F to 140°F. With dimensions of 12.50 by 11.00 by 10.00 inches, you can mount it to a wall or set it on the floor. It suits you if you need hot water for a single sink.
Pros
- Plugs into a standard 120V electrical outlet
- Adjustable temperature control from 50°F to 140°F
- Flexible installation supporting wall or floor mounting
- Standard 1/2-inch NPT connections
Cons
- Limited 1.5-gallon holding capacity
- Stores water in a small tank rather than heating entirely tankless
- Empty weight is 13.5 pounds before adding water
Good fit if
- You need dedicated hot water directly under a sink.
- You want a heater powered by a standard 120V plug.
- You need options for either floor or wall mounting.
Skip if
- You need continuous hot water for high-demand fixtures.
- You require a completely tankless design with zero stored volume.
- You need a hardwired 240V high-power unit.
Verdict: Eemax 1.5-Gallon Mini Tank Electric Water Heater delivers targeted point-of-use hot water through a standard 120V plug. It is a practical choice when you need a dedicated water heater for an individual sink.
Eemax Compact Electric Tankless Water Heater
Best for: compact electric point-of-use installations
- Fuel Type
- Electric
- Dimensions
- 3.75 x 8 x 11.5 inches
View on Amazon: Eemax Compact Electric Tankless Water Heater
This Eemax unit is an electric tankless water heater designed for on-demand hot water. Its compact frame measures 3.75 by 8 by 11.5 inches, saving you storage space inside your home. It features self-modulating technology that adjusts energy input based on current hot water demand. If you want continuous electric heating in tight spaces where every inch counts, this setup fits you.
Pros
- Self-modulating technology adjusts energy input based on demand
- Compact dimensions of 3.75 x 8 x 11.5 inches save storage space
- Provides continuous, on-demand hot water without a storage tank
- All-electric operation requires no fuel venting
Cons
- Specific flow rate in gallons per minute is not stated in specs
- Electrical voltage and breaker requirements are omitted from data
Good fit if
- You need an electric water heater with a compact 3.75 x 8 x 11.5-inch profile.
- You want self-modulating technology that regulates power based on hot water use.
- You require on-demand, continuous hot water rather than a storage tank.
Skip if
- You require a gas-powered tankless water heating unit.
- You need verified flow rate output specifications before purchasing.
Verdict: Eemax Compact Electric Tankless Water Heater delivers continuous hot water using self-modulating energy management. Its 3.75 by 8 by 11.5-inch footprint makes it an efficient fit for tight spaces.
Eemax FlowCo Compact Electric Tankless Water Heater
Best for: tight spaces requiring flexible orientation mounting
- Fuel Type
- Electric
- Temperature Control
- Temperature output based on flow rate
- Dimensions
- 9.75" x 5" x 3"
- Weight
- 3 pounds
View on Amazon: Eemax FlowCo Compact Electric Tankless Water Heater
This electric tankless water heater heats water on demand for dedicated fixtures. Measuring 9.75 by 5 by 3 inches and weighing 3 pounds, it mounts in any orientation to fit confined spaces. The unit uses flow-rate-based temperature output, self-diagnostics, and SafeStart technology. It suits you if you need a tiny, lightweight electric heater tucked inside a small cabinet or tight space without mounting orientation limits.
Pros
- Mounts in any orientation
- Compact 9.75 by 5 by 3 inch dimensions
- Weighs only 3 pounds
- Features SafeStart technology and self-diagnostics
Cons
- Temperature output depends strictly on flow rate
- No external thermostat display or manual temperature dial listed
Good fit if
- You need a compact electric heater that mounts in any orientation.
- You want a lightweight point-of-use unit with self-diagnostics.
Skip if
- You need thermostatic temperature control rather than flow-based output.
- You require a gas-powered water heating system.
Verdict: Eemax FlowCo Compact Electric Tankless Water Heater delivers on-demand heating in an ultra-compact 3-pound body that mounts in any direction. Its flow-dependent output makes it suited for installations where space is severely restricted.
Eemax Lavadvantage Thermostatic Electric Water Heater
Best for: point-of-use boost at sinks and handset showers
- Temperature Control
- microprocessor control
- Dimensions
- 13 in L x 6 in W x 4 in H
- Fuel Type
- Electric
- Weight
- 3.5 pounds
View on Amazon: Eemax Lavadvantage Thermostatic Electric Water Heater
This electric tankless unit measures 12 by 5 by 3 inches and weighs 3.5 pounds. It features microprocessor temperature control, accepts hot or cold water feeds, and operates at 99% efficiency. You can install it using 1/2-inch copper pipe compression fittings with rear or bottom electrical entry. It suits you if you need a point-of-use heater or an inline booster for a kitchen sink, bar sink, or handset shower.
Pros
- Microprocessor temperature control
- Accepts hot or cold water feed
- Compact 3.5-pound weight and 12-inch length
- Rear or bottom electrical entry options
- Rated at 99% efficiency
Cons
- Fitted specifically for 1/2-inch copper pipe compression connections
- Designed for point-of-use fixtures rather than whole-house capacity
Good fit if
- You need an inline booster to eliminate wait times at a sink or handset shower.
- You want a dedicated point-of-use heater for a bar sink, pool house, or vacation home.
- You have existing 1/2-inch copper piping ready for compression fittings.
Skip if
- You need a single central water heater to supply an entire household.
- You use plumbing lines that are incompatible with 1/2-inch copper compression fittings.
Verdict: Eemax Lavadvantage Thermostatic Electric Water Heater delivers targeted heating with precise microprocessor temperature control in a compact 3.5-pound design. It works efficiently as a dedicated fixture heater or as an inline booster alongside existing water systems.
Eemax SPEX3012T Compact Tankless Heater
Best for: single sink hot water boosting
- Fuel Type
- Electric
- Temperature Control
- Microprocessor control
- Dimensions
- 3 x 5 x 12 inches
- Weight
- 4 pounds
The Eemax SPEX3012T is a compact 120-volt electric tankless water heater designed for point-of-use applications. It features microprocessor temperature control for accurate output and measures just 3 by 5 by 12 inches. Weighing only 4 pounds, it fits easily under sinks or in tight spaces. This unit serves as an ideal booster for kitchen or bar sinks, delivering immediate hot water without waiting for a central tank to heat up.
Pros
- Microprocessor temperature control for accurate heat delivery
- Compact 3x5x12 inch footprint fits tight spaces
- Lightweight 4-pound design for easy installation
- 99% energy efficiency rating
Cons
- 120-volt input limits flow rate for high-demand fixtures
- Small size restricts use to single-point applications only
- No remote control or digital display mentioned in specs
Good fit if
- You need hot water for a single sink or bar
- You have limited space under a counter
- You want to boost an existing water heater
Skip if
- You need to supply hot water to multiple fixtures at once
- You require high flow rates for showers
- You only have a 240-volt electrical circuit
Verdict: Eemax SPEX3012T 120V Electric Tankless is a practical booster for low-flow sinks where space is tight. It fits buyers who need instant hot water for hand washing or dish rinsing without installing a full system.
Eemax 36 kW Stainless Steel Tankless Water Heater
Best for: high-capacity 240V electric heating setups
- Fuel Type
- Electric
- Wattage
- 36 kW
- Voltage
- 240 V
- Dimensions
- 4.5 x 21 x 18 inches
- Weight
- 17.4 pounds
View on Amazon: Eemax 36 kW Stainless Steel Tankless Water Heater
The Eemax 36 kW 240V Electric Tankless Water Heater provides on-demand hot water using 36 kW of heating power. It runs on a 240V electrical supply and features a stainless steel casing measuring 4.5 by 21 by 18 inches with a weight of 17.4 pounds. It suits you if you need endless hot water and your electrical system can handle high power draw.
Pros
- 36 kW power rating at 240V
- Provides endless hot water output
- Stainless steel housing
- Country of origin is the United States
Cons
- Requires substantial electrical service to support 36 kW
- Flow rate specifications are not listed in product data
Good fit if
- You have an electrical setup capable of supplying 36 kW at 240V.
- You need endless hot water from an electric tankless unit.
Skip if
- You lack electrical capacity for a 36 kW load.
- You require a 120V low-voltage water heater.
Verdict: Eemax 36 kW 240V Electric Tankless Water Heater delivers 36 kW of heating power in a stainless steel build for spaces with compatible 240V wiring. It provides continuous hot water without an internal storage tank.
Eemax SPEX80T Compact Electric Heater
Best for: Single sink or bar sink hot water
- Fuel Type
- Electric
- Temperature Control
- Microprocessor
- Dimensions
- 3 x 5 x 12 in
- Weight
- 3.5 pounds
The Eemax SPEX80T is a compact, thermostatic electric tankless water heater designed for point-of-use applications. Measuring just 12 inches long and weighing 3.5 pounds, it fits easily under sinks or in tight spaces. It features microprocessor temperature control for accurate heat delivery and accepts hot or cold water feeds. This unit is ideal for kitchen sinks, bar sinks, or as an in-line booster to reduce wait times for hot water.
Pros
- Compact dimensions of 12 x 5 x 3 inches
- Lightweight at 3.5 pounds for easy mounting
- Microprocessor temperature control for accuracy
- 99% energy efficiency rating
- Accepts hot or cold water feed
Cons
- Low wattage limits flow rate for whole-house use
- No remote control or smart connectivity listed
- Limited to single-point applications like sinks
Good fit if
- You need a compact heater for a kitchen or bar sink
- You want an in-line booster for an existing tank heater
- You require accurate temperature control for hand washing
Skip if
- You need high flow rates for showers
- You are heating water for multiple fixtures simultaneously
- You require a whole-house hot water solution
Verdict: The Eemax SPEX80T Compact Electric Heater is a practical solution for adding instant hot water to a single sink or small fixture. Its small footprint and precise temperature control make it suitable for tight spaces where larger units cannot fit.
Eemax Lavadvantage Commercial Tankless Water Heater
Best for: commercial offices and public restrooms
- Fuel Type
- Electric
- Temperature Control
- Thermostatic
- Dimensions
- 3 x 5 x 12 inches
- Use
- Commercial
- Weight
- 3.5 pounds
View on Amazon: Eemax Lavadvantage Commercial Tankless Water Heater
This electric tankless water heater is designed for commercial spaces like retail stores, offices, and schools. You get thermostatic temperature control, a compact 3.5-pound body measuring 12 by 5 by 3 inches, and 99 percent energy efficiency. It activates only when water runs to prevent standby losses. If you need point-of-use hot water that mounts to the wall with compression fittings and zero soldering, this unit fits your installation requirements.
Pros
- 99% energy efficiency rating with zero standby heat loss
- Thermostatic temperature control
- Compact 3.5-pound frame measuring 12 by 5 by 3 inches
- Solder-free installation using compression fittings
Cons
- Built for commercial buildings rather than residential applications
- Operates strictly on electric power with no gas option
Good fit if
- You manage retail stores, offices, schools, or commercial public spaces.
- You want thermostatic temperature control in a compact 3.5-pound frame.
- You need solder-free installation using compression fittings.
Skip if
- You require a gas-powered tankless water heater.
- You need a dedicated residential home water heating system.
Verdict: Eemax Lavadvantage Commercial Tankless Water Heater delivers 99% efficiency and thermostatic control for public restrooms and office facilities. Its 3.5-pound profile and compression fittings enable straightforward wall mounting without soldering.
Eemax Single-Point Handwashing Tankless Water Heater
Best for: single-sink handwashing on 240V power
- Flow Rate
- 0.5 GPM
- Wattage
- 3.5kW
- Voltage
- 240V
- Temperature Control
- 48°F rise at 0.5 GPM
- Dimensions
- 10.75 x 5.25 x 3 inches
- Weight
- 3 pounds
View on Amazon: Eemax Single-Point Handwashing Tankless Water Heater
This Eemax unit is an electric tankless water heater built for single-point handwashing applications. Operating on 240V with a 3.5 kW rating, it produces a 48°F temperature rise at its 0.5 GPM activation flow rate. You can install it in cramped under-sink spaces thanks to its 10.75 by 5.25 by 3-inch dimensions, single cold-water line requirement, and top-mounted 3/8-inch compression fittings.
Pros
- Requires no temperature and pressure relief valve
- Compact 10.75 x 5.25 x 3-inch size weighing 3 pounds
- Delivers a 48°F temperature rise at 0.5 GPM
- Uses top-mounted 3/8-inch compression connections
Cons
- Requires a 240V electrical connection for 3.5 kW output
- Designed only for low-flow 0.5 GPM single-point fixtures
Good fit if
- You need heated water dedicated to a single handwashing sink.
- You have an available 240V circuit.
- You want top-facing 3/8-inch fittings that feed from a single cold line.
Skip if
- You need to supply showers or multiple simultaneous fixtures.
- You only have a 120V outlet available at the sink location.
Verdict: Eemax Single-Point Handwashing Tankless Water Heater supplies a 48°F rise for low-flow handwashing without taking up significant cabinet space. Its 240V heating system runs efficiently without requiring a temperature and pressure relief valve.
Eemax Lavadvantage Thermostatic Electric Water Heater
Best for: point-of-use sinks and in-line tank boosting
- Fuel Type
- Electric
- Temperature Control
- Microprocessor temperature control
- Dimensions
- 3 x 5 x 12 inches
- Weight
- 3.5 pounds
View on Amazon: Eemax Lavadvantage Thermostatic Electric Water Heater
This compact electric tankless unit measures 12 by 5 by 3 inches and weighs 3.5 pounds. You get microprocessor temperature control designed to keep output steady across multiple sinks, along with 1/2-inch copper pipe compression fittings. It supports hot or cold water feeds and operates at 99% efficiency. If you need a compact booster for an existing tank or a dedicated heater for a pool house or spare bathroom, this model fits.
Pros
- Microprocessor temperature control maintains steady water temperature
- Operates at 99% efficiency with hot or cold water feeds
- Equipped with 1/2-inch copper pipe compression fittings
- Compact 3.5-pound body with rear or bottom electrical entry
Cons
- Flow rate capacity in gallons per minute is not stated
- Voltage and wattage ratings are not listed in the specifications
Good fit if
- You need an in-line booster for an existing tank heater or solar system.
- You want a lightweight point-of-use heater for a pool house, hand-set shower, or spare bathroom.
Skip if
- You require verified flow rate ratings in gallons per minute prior to purchase.
- You need detailed electrical voltage and amperage specifications provided upfront.
Verdict: Eemax Lavadvantage Thermostatic Electric Water Heater delivers 99% efficiency and microprocessor control in a compact 3.5-pound enclosure. It functions effectively as a point-of-use unit or an in-line booster for existing hot water systems.
Eemax 8.0 kW Electric Tankless Water Heater
Best for: compact 240V electric water heating setups
- Fuel Type
- Electric
- Wattage
- 8.0 kW
- Voltage
- 240 V
- Dimensions
- 4.5 x 14 x 18 inches
- Weight
- 7.04 pounds
This Eemax unit is an electric tankless water heater running on a 240-volt electrical supply. It draws 8.0 kW of power, making it a compact option for moderate heating demands. The gray enclosure weighs 7.04 pounds and measures 18 by 14 by 4.5 inches, so you can mount it in tight utility areas. It suits you if you need dedicated electric heating without dedicating floor space to a storage tank.
Pros
- 8.0 kW heating power
- Runs on 240 V electric service
- Lightweight build at 7.04 pounds
- Slim 4.5-inch depth profile
Cons
- Requires a 240 V circuit rather than standard 120 V
- No digital temperature display or controls listed
- 8.0 kW capacity is lower than whole-home models
Good fit if
- You have a 240 V electrical connection ready.
- You need a lightweight heater under 8 pounds for tight wall spaces.
- You want an 8.0 kW electric heating setup.
Skip if
- You only have access to a 120 V electrical outlet.
- You need a gas-fueled water heater.
- You require high-volume output exceeding 8.0 kW.
Verdict: Eemax 8.0 kW Electric Tankless Water Heater provides dedicated 240-volt electric heating in a compact 7.04-pound enclosure. It delivers an 8.0 kW output for installations where tank space is unavailable.
Eemax Compact Point-of-Use Electric Water Heater
Best for: low-flow single-sink point-of-use installations
- Fuel Type
- Electric
- Flow Rate
- 0.2 GPM activation
- Installation Location
- Point-of-use
- Dimensions
- 3 x 5 x 12 inches
- Weight
- 3.5 pounds
View on Amazon: Eemax Compact Point-of-Use Electric Water Heater
This Eemax electric point-of-use tankless water heater delivers on-demand hot water directly at the fixture. It turns on at a low 0.2 GPM flow rate and uses power modulating controls to match heating output to your water usage. Measuring 3 by 5 by 12 inches and weighing 3.5 pounds, the unit mounts in any orientation. It suits you if you need compact, dedicated water heating for an ADA-compliant sink.
Pros
- Activates at a low 0.2 GPM flow rate
- Mounts in any orientation
- Compact 3 x 5 x 12-inch size weighing 3.5 pounds
- Silent operation with power modulating controls
Cons
- Designed for point-of-use rather than whole-home water supply
- No digital status display listed in specifications
Good fit if
- You need hot water at a single point-of-use fixture.
- You have limited space and need an enclosure that mounts in any orientation.
- You require a low 0.2 GPM activation flow rate for handwashing.
Skip if
- You need a whole-house water heating system.
- You run multiple hot water fixtures at the same time.
Verdict: Eemax Compact Point-of-Use Electric Water Heater provides low-flow 0.2 GPM heating in a compact 3.5-pound frame that fits tight spaces in any mounting orientation. It is a practical point-of-use option when you need dedicated sink heating without whole-house equipment.
Eemax 19 kW Electric Tankless Water Heater
Best for: 240V installations needing precise thermostatic heating
- Fuel Type
- Electric
- Wattage
- 19KW
- Voltage
- 240V
- Temperature Control
- Thermostatic control
- Dimensions
- 5 x 11 x 11 inches
This Eemax unit is a compact electric tankless water heater designed for dedicated hot water delivery. Operating at 240 volts and 19 kilowatts, it features thermostatic temperature control to maintain steady output heat. Its casing measures 5 by 11 by 11 inches and includes 3/4-inch NPT bottom water connections. If you have the electrical capacity for a 240-volt, 19-kilowatt setup and need high efficiency in tight spaces, this model fits your system.
Pros
- 99% energy efficient operation
- Thermostatic control for precise outlet temperature
- Standard 3/4-inch NPT bottom connections
- Compact footprint measuring 5 x 11 x 11 inches
Cons
- Requires a dedicated 240-volt electrical supply
- Plumbing connections limited exclusively to the bottom
Good fit if
- You have a 240-volt electrical service wired for 19 kW.
- You need standard 3/4-inch NPT plumbing entering from the bottom.
- You want thermostatic temperature control in a small 5 x 11 x 11-inch enclosure.
Skip if
- You lack the 240-volt electrical supply needed for a 19 kW heater.
- You require top-mounted or side-mounted water connections.
Verdict: Eemax 19 kW Electric Tankless Water Heater delivers 99% energy efficiency and thermostatic control in a compact 5 x 11 x 11-inch frame. It provides a direct 240-volt heating solution for locations configured for bottom plumbing.
Eemax FlowCo 7.5 kW Electric Tankless Water Heater
Best for: compact 240V point-of-use water heating
- 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
The Eemax FlowCo 7.5 kW Electric Tankless Water Heater delivers on-demand heating with a 7.5 kW heating capacity on a 240V electrical setup. It weighs 3 pounds and measures 12.3 inches long, 5.9 inches wide, and 3.4 inches high, fitting into tight wall spaces. This gray unit suits you if you need a dedicated electric water heater for targeted heating without taking up floor space.
Pros
- 7.5 kW power rating at 240V
- Compact dimensions at 12.3 by 5.9 by 3.4 inches
- Lightweight build at 3 pounds
Cons
- Requires a 240V electrical connection
- No external temperature display listed
Good fit if
- You have an available 240V electrical connection.
- You need a compact heater weighing 3 pounds for tight mounting areas.
Skip if
- You only have a 120V power supply.
- You require more than 7.5 kW of heating capacity.
Verdict: Eemax FlowCo 7.5 kW Electric Tankless Water Heater provides 7.5 kW of heating power in a lightweight 3-pound gray chassis. It is a practical fit when you have a 240V line and limited installation space.
Specifications side by side
| Spec | Eemax FlowCo 3.5 kW 120V Point of Use Water Heater | Eemax 1.5-Gallon Mini Tank Electric Water Heater | Eemax Compact Electric Tankless Water Heater | Eemax FlowCo Compact Electric Tankless Water Heater | Eemax Lavadvantage Thermostatic Electric Water Heater | Eemax SPEX3012T Compact Tankless Heater | Eemax 36 kW Stainless Steel Tankless Water Heater | Eemax SPEX80T Compact Electric Heater | Eemax Lavadvantage Commercial Tankless Water Heater | Eemax Single-Point Handwashing Tankless Water Heater | Eemax Lavadvantage Thermostatic Electric Water Heater | Eemax 8.0 kW Electric Tankless Water Heater | Eemax Compact Point-of-Use Electric Water Heater | Eemax 19 kW Electric Tankless Water Heater | Eemax FlowCo 7.5 kW Electric Tankless Water Heater |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fuel Type | Electric | Electric | Electric | Electric | not specified | Electric | Electric | Electric | Electric | not specified | Electric | Electric | Electric | Electric | not specified |
| Flow Rate | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | 0.5 GPM | not specified | not specified | 0.2 GPM activation | not specified | not specified |
| Wattage | 3.5 Kilowatt | not specified | not specified | not specified | not specified | not specified | 36 kW | not specified | not specified | 3.5kW | not specified | 8.0 kW | not specified | 19KW | 7.5kw |
| Installation Location | Point of Use | Wall and floor mountable | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Point-of-use | not specified | not specified |
| Capacity | not specified | 1.5-Gallon | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Voltage | 120 Volt | 120V | not specified | not specified | not specified | not specified | 240 V | not specified | not specified | 240V | not specified | 240 V | not specified | 240V | 240V |
| Temperature Control | not specified | 50°F to 140°F | not specified | Temperature output based on flow rate | microprocessor control | Microprocessor control | not specified | Microprocessor | Thermostatic | 48°F rise at 0.5 GPM | Microprocessor temperature control | not specified | not specified | Thermostatic control | not specified |
| Dimensions | 9.75 x 5 x 3 inches | 12.50 x 11.00 x 10.00 inches | 3.75 x 8 x 11.5 inches | 9.75" x 5" x 3" | 13 in L x 6 in W x 4 in H | 3 x 5 x 12 inches | 4.5 x 21 x 18 inches | 3 x 5 x 12 in | 3 x 5 x 12 inches | 10.75 x 5.25 x 3 inches | 3 x 5 x 12 inches | 4.5 x 14 x 18 inches | 3 x 5 x 12 inches | 5 x 11 x 11 inches | 3.4" x 5.9" x 12.3" |
| Use | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Commercial | not specified | not specified | not specified | not specified | not specified | not specified |
| Weight | 3.1 pounds | 13.5 pounds | not specified | 3 pounds | 3.5 pounds | 4 pounds | 17.4 pounds | 3.5 pounds | 3.5 pounds | 3 pounds | 3.5 pounds | 7.04 pounds | 3.5 pounds | not specified | 3 pounds |
| Color | White | White | Blue | White | White | White | Stainless Steel | White | White | White | White | Gray | White | Gray | Gray |
| Model | SPEX3512 | EMT1 | EEM24013 | SPEX65 | SPEX3512T | SPEX3012T | HA036240 | SPEX80T | SPEX4208T | SP35 | SPEX100T | HA008240 | SPEX1812T | EX190T2 | B2282392 |
| Size | not specified | 12.50 x 11.00 x 10.00 inches | not specified | not specified | not specified | not specified | not specified | not specified | not specified | not_applicable | not specified | not specified | not specified | 5 x 11 x 11 inches | not specified |
Choosing the Right Eemax Water Heater
For single-fixture handwashing and tight under-sink spaces, you have compact point-of-use units. Options like the Eemax FlowCo 3.5 kW 120V Point of Use Water Heater run on standard 120-volt wiring, while the Eemax 1.5-Gallon Mini Tank Electric Water Heater uses a dedicated storage reservoir. Choose these models if you want targeted warm water at an isolated sink.
For higher demands, Eemax provides 240-volt systems engineered for greater capacity. The Eemax 36 kW Stainless Steel Tankless Water Heater delivers 36 kW of power for heavy electrical setups, whereas the Eemax Series Two Whole House Tankless Water Heater serves low-demand whole-home configurations up to 2 GPM. Pick these 240-volt models if you require whole-structure flow or elevated heating power.
Where Eemax Water Heaters Fit
The Eemax catalog focuses strictly on electric water heating. Hardware ranges from ultra-compact 3-pound units measuring 3 by 5 by 9.75 inches up to a 17.4-pound, 36 kW stainless steel chassis. Shapes include compact vertical modules, flat rectangular enclosures, and a 1.5-gallon mini tank, finished in white, gray, blue, or bare metal.
This lineup suits dedicated sinks, commercial restrooms, and lower-demand setups. However, you will find clear gaps. The list contains no gas options. Whole-house delivery caps at 2 GPM, leaving out high-demand setups that require higher simultaneous flow rates across multiple fixtures.
If you need supplemental room warmth alongside water heating, compare the best lasko space heaters by output wattage.
How to choose the right one
-
Check available voltage
You must match the unit to your home’s electrical circuit. Most point-of-use models operate on standard 120V, such as the Eemax FlowCo 3.5 kW. Others require 240V lines, like the 8.0 kW or 36 kW heaters. Installing a 240V unit on a 120V circuit will fail. Verify your breaker panel capacity before purchasing. Do not assume all electric heaters accept the same power input. Mismatching voltage causes immediate failure or safety hazards.
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Measure cabinet space
Many Eemax units are designed for tight under-sink installations. The Eemax FlowCo 3.5 kW measures only 5 by 3 by 9.75 inches. This small footprint fits inside standard vanity cabinets. Larger whole-house or high-kilowatt models require more room. The 36 kW stainless steel unit is significantly wider. Measure your available width, height, and depth before buying. Ensure the unit fits with enough clearance for plumbing connections and airflow.
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Identify fixture type
Determine if you need a single-sink solution or whole-house supply. Point-of-use units like the Lavadvantage Thermostatic model target specific sinks. Whole-house models, such as the Series Two, serve multiple fixtures. The Series Two has a 2 GPM limit, restricting its use for high-demand households. Match the heater’s intended use to your plumbing layout. Using a point-of-use unit for a whole-house system will result in insufficient hot water flow.
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Verify mounting needs
Some units offer multidirectional mounting for flexible installation. The Eemax FlowCo 3.5 kW allows positioning in various orientations within tight spaces. This feature simplifies installation in cramped cabinets. Other models may have fixed orientation requirements. Check the specifications for mounting flexibility. Proper mounting ensures stability and ease of maintenance. If your space restricts standard mounting, look for units with versatile installation options to avoid complex plumbing rerouting.
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Assess heating power
Kilowatt rating determines how quickly water heats. Higher kW units, like the 36 kW model, provide more energy for larger demands. Lower kW units, such as the 3.5 kW, suit low-flow handwashing. Ensure your electrical service can handle the load. A 36 kW unit requires robust wiring and breakers. Do not oversize for a single sink or undersize for a bathroom. Match the wattage to the expected water flow rate for optimal performance.
Frequently asked questions
Can you mount Eemax FlowCo tankless water heaters in any orientation?
FlowCo models like the SPEX65 and SPEX3512 offer multidirectional mounting. You can install them in any direction inside tight cabinet spaces. The SPEX65 weighs 3 pounds and measures 3 by 5 by 9.75 inches, giving you flexible orientation options where physical clearance is restricted.
What is the minimum flow rate needed for an Eemax point-of-use heater to run?
The Eemax SPEX1812T activates at a low flow rate of 0.2 GPM. This design targets single-sink handwashing fixtures that use minimal water. It delivers point-of-use heating within a 3.5-pound housing measuring 5 by 3 by 12 inches, allowing operation on low-volume plumbing lines.
Does the Eemax single-point handwashing heater require a relief valve?
The Eemax SP35 single-point handwashing heater does not require a temperature and pressure relief valve. It runs on a 240-volt electrical supply to deliver a 48°F temperature rise for low-flow handwashing. The unit weighs 3 pounds and measures 10.8 by 5.25 by 3 inches.
How do Eemax Lavadvantage water heaters manage output temperature?
Eemax Lavadvantage models use integrated microprocessor temperature control for precise heating. Units like the SPEX3512T and SPEX100T operate at 99% efficiency in compact 3.5-pound enclosures. You can install them as dedicated fixture heaters or use them as inline boosters alongside an existing water system.
Do you need soldering tools to install commercial Eemax tankless units?
You do not need soldering tools for the Eemax Lavadvantage SPEX4208T commercial model. It features compression fittings that enable wall mounting without soldering. The unit delivers thermostatic control with 99% efficiency for public restrooms and commercial offices within a compact 3.5-pound frame.
Which Eemax electric tankless heater offers the highest heating capacity?
The Eemax HA036240 delivers the highest heating output on the list at 36 kW. It runs on a 240V circuit and features a stainless steel build weighing 17.4 pounds. Measuring 21 by 4.5 by 18 inches, it supplies continuous hot water without requiring an internal storage tank.
What plumbing setup is required for the Eemax 19 kW tankless heater?
The Eemax EX190T2 19 kW heater is configured specifically for locations with bottom plumbing connections. It operates on a 240V electrical connection while delivering 99% energy efficiency and thermostatic control. Its compact gray chassis measures 11 by 5 by 11 inches to fit existing pipe configurations.