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Eemax Thermostatic Heat-Controlled Multi-Fixture Electric Tankless Water Heaters

Eemax Thermostatic Heat-Controlled Multi-Fixture Electric Tankless Water Heaters - Model EX65T
Eemax Thermostatic Heat-Controlled Mult-Fixture Electric Tankless Water Heaters

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Eemax Thermostatic Heat-Controlled Multi-Fixture Electric Tankless Water Heaters - Model EX65T

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Thermostatic Electric Tankless Water Heaters for duel outlet applications. Adjusts its power level according to the incoming water temperature. Good fit for dishwashers, hand set showers, vacation homes and emergency eye wash fountains. EX65T Model.

Why Green

  • Reduces energy consumption
  • Does not require fossil fuels

Expert Rating:


Our Eemax Single/Multi Fixture Electric Tankless Water Heaters flows the water into the unit where an electric element heats the water up quickly for your kitchen and bathroom sinks, showers and dishwashers. Each model provides instant hot water without the need for a large, energy consuming storage tank that is constantly running 24 hours a day. Also, there is a reduction of calcium and mineral build-up since there is no “standing” water being stored. The tankless water heater features a Thermostatic function to control precise water temperature. Each tankless heater is built to last and easily mounts on the wall or fits underneath a sink.

According to the U.S. Department of Energy, water heating uses up to 25% of the energy in U.S. homes and is the second largest energy expense in households. The majority of these homes use a large storage tank water heater that slowly heats up and stores hot water for your shower, sink, kitchen and appliances such as the dishwasher. When this stored water is not being used, it loses heat and then has to be reheated to maintain a pre-set temperature. This constant cycle requires the tank to be full and use 24-hour energy consumption to keep the water heated. It only seems logical to turn off this hot water that is being stored when it is not needed. A compact tankless water heater has no storage tank and is activated only when there is a demand for hot water, thus reducing energy consumption and costs by up to 50%.


  • Cuts energy waste - 99% efficient, flow switch activates heater only on demand (no standby heat loss as compared conventional storage tank heaters)
  • Serves as a booster for dishwashers, sanitation and existing tank heater
  • Thermostatic application: unit will adjust its power level according to the incoming water temperature. Also serves as a booster for temperature loss from long pipe runs, dishwashers and sanitation. Good for applications where precise temperature control is essential (schools, hospitals and laboratories). Can have a warm or hot water source and can reduce potential problems with anti-scalding valves.
  • Digital Thermostat Readout Option: easy-to-adjust external temperature control with LED readout on outside of unit (do not have to remove hardware in order to adjust temperature if needed)
  • Ideal for radiant floor applications, hand set showers, pool house, spare bedroom, vacation homes, dishwashers, single and multiple handwash sinks, emergency eye wash fountains, and multi-station modular sinks
  • Saves money – only consumes energy when hot water is needed for up to 50% savings
  • Endless hot water - never run out of hot water again
  • Eliminates long waits for hot water by producing immediately then gradually reducing its power input as the hot water from the tank arrives
  • Automatically shuts off when the water temperature reaches the desired temperature. Maintains a constant temperature regardless of number of fixtures being used
  • Compact size and design - can be installed at point of use, saving space
  • Easy installation: only one cold or hot water line needed, integral compression fittings for 1/2" pip (5/8”OD) on bottom (no sweat conncetions)
  • Prevents Legionella bacteria growth
  • Reduces liming, calcification and sedimentation
  • Complies with handicap requirements
  • Ni Chrome Element: - a unique, patented flow path ensures optimum heat transfer and extended element life
  • High temperature limit switch - protects against element burn out, with reset button
  • Ruggedly designed for decades of reliable operation
  • Fully adjustable temperature range between 100 – 140°F
  • Thermostatic feature maintains +/-1 °F accuracy
  • Metering and sensor faucet compatible
  • Sanitation setting at 180°F
  • Anti-scald protection
  • Meets ANSI Z358.1 tepid water requirements for emergency eyewash
  • Operating pressure - min 25 PSI, max 150 PSI
  • Size: 10.75" x 5.25" x 2.87"
  • Weight: 3 lbs.
  • Models available for specific installation needs:
    • EX65T: 240 Volts (can be used at 208V w/ 25% reduced output), 6.5wK, 27 Amps
    • EX95T: 240 Volts (can be used at 208V w/ 25% reduced output), 9.5wK, 40 Amps
    • EX95T: 277 Volts, 9.0wK, 33 Amps


All Single Electric Tankless Water Heater models are specifically designed to be installed under the counter feeding a single faucet (5.5kW or lower). It is designed to take in cold water only and heat it to temperatures suitable for hand washing. To obtain optimum performance and energy savings, the unit should be located as near as possible to the point of use. The heater incorporates a constant flow device and should only be used with the faucet aerator supplied with the unit. The heater must have its own independent circuit, using a correctly rated breaker and wires suitable for at least 75°C operation.

IMPORTANT: Before switching "on" the power at the breaker make sure that the hot water circuit is free of air pockets or premature failure of the heating element will occur. To do this open all hot water faucets one at a time for a minute or two until the water flow is continuous and free from "gulping" or visible air pockets. For example, this procedure should always be completed before use if you the water had to be turn off temporarily for safety purposes (during a water main break) or if voluntarily turned off (while away for long periods of time).

How it Works

Tankless water heaters allow you to heat up water for your fixture without the use of a storage tank. As a result, there are no longer standby heat losses that occur with standard storage water heaters. When the hot water tap is turned on, cold water travels through the pipe into the tankless unit and uses an electric element to deliver a constant supply of hot water. This sophisticated electrical sensor gathers the flow rate of the water and incoming water temperature. It then calculates the amount of power needed to heat the water at a certain temperature point. The water flows through the heating element and exits through the faucet, tap or pipe at a desired temperature. This entire process happens almost instantly. No more waiting for a storage tank to fill up with enough hot water.

Please note that some smaller tankless water heaters cannot supply hot water for multiple uses in large households. For example, running the dishwasher and taking a shower may provide limited hot water. If needed, “whole house” type tankless water heaters or installing two or more water heaters connecting to separate fixtures and appliances can resolve this issue.

Product Usage

In general, the key to selecting the proper model is to understand the flow rates of your fixtures, the temperature of incoming water, electric service provided and applications (for example, how many faucets and appliances you wish to use at the same time).

  • Applications: - determine where exactly you want hot water throughout the home, office or area. For example, one bathroom or kitchen sink (single point model), a shower and sink, multiple kitchen sinks (multi-point/phase model) or an entire home, apartment or condo (whole house model). You can also install one heater for different zones throughout your home in order to heat the water.
  • Flow rates - it is helpful to measure and know the flow rates at your faucet, showerhead and other outlets to get a better estimate of your flow rate needs. A maximum flow rate of 3 GPM is generally sufficient for standard bathroom/kitchen faucet or showerhead applications.
    It is important to get the best estimate since tankless water heaters will generate a temperature rise based on the flow rate demanded.
  • Incoming water temperature - it is important to factor in your ambient incoming water temperature based on where you live. For example, there may be a difference on how much temperature rise you will need in order to receive the desired temperature of your hot water in colder climates as compared to warmer areas down south.
  • Electrical Service - Simply inspecting the main breaker in your electrical panel can help determine how many amps of electrical service your home provides. Our single phase tankless electric water heaters generally require 240 – 277 volts and 20 – 40 amps (depending on model).
Based on the many factors involved in finding the right model, we do suggest having a qualified, licensed plumbing contractor to assist with determining your needs, fulfilling building code requirements and installation.

Typical Flow Rates in Gallon per Minute (GPM)
Fixture Type Lavatory Bathtub Shower Kitchen Sink Bar/Pastry Sink Laundry Sink Dishwasher
Flow Rates 0.5 2.0-4.0 1.5-3.0 1.0 - 1.5 1.5 - 2.5 2.5 - 3.0 1.0 - 3.0

Flow Rate (GPM) = kW rating x 6.83
rise in temp (°F)
Rise in Temp (°F) = Rise in Temp (°F)
kW rating x 6.83)
kW Rating = GPM x rise in temp
rise in temp (°F)



Full factory warranty – heaters are guaranteed against failure due to leaks of "Heater Body/Element Assembly" for a period of 5 years.


Here are some simple facts about the standard tank type water heaters that are present in the majority of homes: the tank, which can hold 20 to 80 gallons of water, cycles on and off all day long to keep the water hot. As a result, this wastes lots of energy and money even when it’s not in use. When hot water runs out, the tank has to refill before it is ready to supply hot water. Storage tanks are large and take up space, more expensive to operate, more likely to rust and leak and typically have a lifespan of 10-12 years.

A tankless electric water heater is a compact unit that provides hot water only when needed. The second the faucet or outlet is turned off the heater is turned off, no need to have standby water. As a result, there is an increase in energy efficiency (10 to 20% greater as compared to storage tank heaters), a decrease in your energy bill and an unlimited supply of hot water. Furthermore, each tank has a life expectancy of about 20 years (with no chance of a tank breaking down and then flooding the basement). Overall, if you choose the correct model and size for the application(s) you want, in the end a tankless hot water heater will save energy and money.

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This page features our catpages-energy savings inlcuding Eemax Thermostatic Heat-Controlled Multi-Fixture Electric Tankless Water Heaters - Model EX65T, Eemax Thermostatic Heat-Controlled Multi-Fixture Electric Tankless Water Heaters - Model EX95T and Eemax Thermostatic Heat-Controlled Mult-Fixture Electric Tankless Water Heaters - Model EX90T.