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Simple, straightforward and low shipping rates for these commercial tankless water heaters.


Eemax Tankless Commercial Water Heaters


Eemax is a leader in the electric tankless water heater industry. With dozens of models to choose from (both residential and commercial, single-point use or whole-house) there is something to fit any hot water heating need. Let PlumbingSupply.com® supply you with a tankless water heater from Eemax.

These heavy duty tankless water heaters are made for any company or home that needs hot water including hospitals, homes, schools, gyms, factories, hotels, malls, restaurants, apartment complexes, and many other places.


Please Note: You must fill out an acknowledgment form before the manufacturer will ship any "Three Phase" models.
Click here to find why the form is required.

Eemax "Three Phase" Models (Three Heating Elements)
Eemax three phase model This Three Phase water heater model features:
  • High powered on-demand water heater, 18kW to 32kW
  • Ideally suited for higher flow rate industrial/commercial applications
  • Installation in series with other Eemax units will give a higher flow rate or greater temperature rise (2 units max)
  • Standard temperature range: 100°F to 140°F
  • Designed for wall mount
  • Thermostat is accurate within +/- 1.0° F
  • Replacement elements can be bought here
  • Turn on options:
    T3 option - thermostatic water heater (parallel turn on) needs at least 1.8 GPM to turn on, and the maximum flow is 5 GPM
  • T2T option - thermostatic water heater (staged turn on) needs at least .7 GPM to turn on and the max flow is 4 GPM
  • View dimensional diagram of these Three-Phase Thermostatic water heaters
Three Phase Model Specifications:
  • Min pressure: 25 PSI
  • Max pressure: 150 PSI
  • Pipe-fittings: 1/2" compression at bottom of unit
  • Weight: 15 lbs.

"Three Phase" Thermostatic Models (Triple Heating Modules)
Model Volts kW Total Amps Temperature Rise (°F) at/GPM Wire Size Price & Quantity
1.5
gpm
2.0
gpm
2.5
gpm
3.0
gpm
EX180 T3 208/120V
(no neutral leg)
18 150 82° 61° 49° 41° 6 AWG $1187.49
EX180 T3 480Y/277V
(neutral leg required)
18 66 82° 61° 49° 41° 10 AWG $1203.04
EX240 T3 208/120V
(no neutral leg)
24 201 109° 82° 65° 54° 6 AWG $1185.70
EX240 T3 480Y/277V
(neutral leg required)
24 87 109° 82° 65° 54° 10 AWG $1205.87
EX180 T2T 208/120V
(no neutral leg)
18 150 82° 61° 49° 41° 6 AWG $1187.41
EX180 T2T 480Y/277V
(neutral leg required)
18 66 82° 61° 49° 41° 10 AWG $1212.20
EX240 T2T 208/120V
(no neutral leg)
24 201 109° 82° 65° 54° 6 AWG $1195.61
EX240 T2T 480Y/277V
(neutral leg required)
24 87 109° 82° 65° 54° 10 AWG $1207.11
ED032480 T2T 480V Delta
(no neutral leg)
32 114 120° 109° 87° 73° 10 AWG $1397.27

Please Note: You must fill out an acknowledgment form before the manufacturer will ship any "Three Phase" models.

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"Series Six" Models (Six Heating Elements) - Three Phase
Eemax Series Six models These tankless water heater models feature:
  • Heavy duty water heater provides huge amounts of hot water whenever you need it - and it turns off to conserve energy when you don't need it
  • Good for industrial/commercial applications
  • Equipped with micro processing thermostats accurately maintain outlet temperature (+/- 1°)
  • Elements - six replaceable cartridge elements plus two spares
  • Comes with thermal cut out
  • Standard temp setting 100°- 140°
  • Fitted with 1" NPT bottom pipe connections
  • Operating pressure min. 50 PSI, max 150 PSI
  • Minimum flow: 4GPM. Max flow: 13 GPM
  • Hot or cold water feed
  • Three phase models
  • Replacement elements can be bought here
  • View dimensional diagram for Series Six water heaters

  • Turn on options:
    T6 - parallel heating module (needs 3.5 GPM to turn on, the maximum flow is 12 GPM)
    T24T - staged heating elements (needs 1 GPM to turn on, the max flow 6 GPM)
T6 Parallel Models - Min Flow 3.5 GPM, Max Flow 12 GPM
Model Voltage kW Total AMPS Temperature Rise (°F) at/GPM Recommended
Wire Size
Price & Quantity
4.0gpm 5.0gpm 6.0gpm 7.5gpm 8.0gpm 10.0gpm
EX360 T6 480/277 36 129 61° 49° 41° 32° 30° 24° 4 AWG $2995.48
EX480 T6 480/277 48 174 82° 65° 54° 43° 41° 32° 3 AWG $3004.04
EX360 T6 208/120 36 300 61° 49° 41° 32° 30° 24° 1 AWG $3003.94
EX480 T6 208/120 48 399 82° 65° 54° 43° 41° 32° 1 AWG $3012.23

Please Note: You must fill out an acknowledgment form before the manufacturer will ship any "Three Phase" models.

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T24T Staged Models - Min Flow 1 GPM, Max Flow 6 GPM
Model Voltage kW Total AMPS Temperature Rise (°F) at/GPM Recommended
Wire Size
Price & Quantity
4.0gpm 5.0gpm 6.0gpm
EX360 T24T 480/277 36 129 61° 49° 41° 4 AWG $3016.34
EX480 T24T 480/277 48 174 82° 65° 54° 3 AWG $3008.19
EX360 T24T 208/120 36 300 61° 49° 41° 1 AWG $3030.86
EX480 T24T 208/120 48 399 82° 65° 54° 1 AWG $2999.84
ED063480 T24T 480V 63 228 109° 86° 72° 3 AWG $3580.88

Please Note: You must fill out an acknowledgment form before the manufacturer will ship any "Three Phase" models.

to replacement water heater elements

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"Series Twelve" Models (Twelve Heating Elements) - Three Phase
Eemax series twelve models These tankless water heater models feature:
  • Extremely productive water heater provides huge amounts of hot water whenever you need it - and it turns off to conserve energy when you don't need it
  • Good for industrial/commercial applications
  • Equipped with micro processing thermostats accurately maintain outlet temperature (+/- 1°)
  • Elements - twelve replaceable cartridge elements plus two spares
  • Comes with thermal cut out
  • Fitted with 1-1/4" NPT bottom pipe connections
  • Comes with turn on options
  • Operating pressure min. 25 PSI, max 150 PSI
  • Minimum flow: 4.5GPM. Max flow 25 GPM
  • Hot or cold water feed
  • Weight: 70 lbs
  • Three phase
  • Replacement elements can be bought here
  • Click for Dimensions

Please Note: You must fill out an acknowledgment form before the manufacturer will ship any "Three Phase" models. (click here to find why the form is required)

Series Twelve Models (Twelve Heating Elements) - Three Phase
Model Voltage kW Total AMPS Temperature Rise (°F) at/GPM Recommended
Wire Size
Price & Quantity
First Stage Second Stage
6.0gpm 7.5gpm 20.0gpm 23.0gpm
EX480T12 480/277 48 116 27° 22° 16° 14° 3 AWG $4971.09
EX720T12 480/277 72 174 41° 33° 25° 21° 1/0 AWG $4944.24
EX960T12 480/277 96 232 55° 44° 33° 28° 3/0 AWG $4986.76
EX480T12 208V 48 266 27° 22° 16° 14° 2/0 AWG $4967.70
EX720T12 208V 72 400 41° 33° 25° 21° 300 MCM $4991.41
EX960T12 208V 96 534 55° 44° 33° 28° 400MCM $4981.11
ED108480T12 480V 108 390 61° 49° 36° 32° 3/0AWG $6393.35
ED126480T12 480V 126 456 71° 57° 43° 37° 4/0AWG $6455.95

Please Note: You must fill out an acknowledgment form before the manufacturer will ship any "Three Phase" models.

to replacement water heater elements

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Water Connectors - click here for more flexible water supply lines
Ultraflow gas connectors
These water connectors feature:
  • Stainless steel water ways inside
  • Great for tankless water heaters and more
  • Purchase 10 or more (of the same size) for additional savings
Description Price & Quantity
Flexible Corrugated Stainless Steel Water Connector - 3/4" FIP x 3/4" FIP - 18" Long $6.78
Flexible Corrugated Stainless Steel Water Connector - 3/4" FIP x 3/4" FIP - 24" Long $7.53
Flexible Corrugated Copper / Stainless Steel Water Connector - 3/4" FIP x 3/4" Nom Sweat - 18" Long $6.93
Flexible Corrugated Copper / Stainless Steel Water Connector - 3/4" FIP x 3/4" Nom Sweat - 24" Long $7.55
Flexible Corrugated Stainless Steel Water Connector - 1" FIP x 1" FIP - 18" Long $18.39
Flexible Corrugated Stainless Steel Water Connector - 1" FIP x 1" FIP - 24" Long $20.99
Flexible Corrugated Stainless Steel Water Connector - 1 1/4" FIP x 1 1/4" FIP - 18" Long $28.15
Flexible Corrugated Stainless Steel Water Connector - 1 1/4" FIP x 1 1/4" FIP - 24" Long $30.25
3/4" x 1/2" bushing - adapts 3/4"FIP water connector to 1/2"FIP $3.48

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Water Heater Scale Inhibitor System
Eemax water heater scale inhibitor This water heater scale inhibitor system features:
  • Helps protect piping from corrosion
  • Maintains efficiency and extends life of system
  • Inhibits scale build-up caused by hard water
  • Translucent dispenser cartridge allows for convenient detection of remaining scale stopper level
  • Slow dissolve rate for long life and consistent dosing
  • 3/4" NPT
  • Up to 10 GPM
  • Cold water feed line
  • Venturi tee is constructed from stainless steel and meets all low lead requirements for both federal and state
  • Multi-application design effective on all types of hot water systems-boilers, tankless, and tank-type (gas or electric)
  • Installs on cold waterline before water heater - can be installed in any direction
  • Scale Inhibitor media is siliphos which is a suitable for drinking and cooking water and all food applications
  • Replacement cartridges (AP431) are available for these in-line scale inhibitor systems
Description Price & Quantity
Water Heater Scale Inhibitor System
  Order 6 or more for greater savings!
$69.95
Replacement filter for water heater scale inhibitor system
  Order 10 or more for even greater savings!
$29.99
Note: Recommended time to change/replace filter cartridge is 6 months.
Purchase a replacement cartridge to have on hand when needed.

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Drain Pan For Tankless Water Heaters
Picture Description Price & Quantity
Wall Saver for Tankless Water Heaters Drain Pan For Tankless Water Heaters
Click for dimensions

Click here for more information
$38.29
12-pack of Drain Pans $431.91
PVC Drain Connector for the tankless water heater drain pan (listed above)
Includes 1 each: 1" PVC male adapter, gasket, and locknut
$4.95

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FloodStop System for Water Heaters
FloodStop system 3/4 inch NPT for water heaters
FS-3/4-NPT
compression flood stop
FS 3/4-C (compression)
FloodStop system 1 inch NPT for water heaters
FS-1-NPT

FloodStop (FS 3/4) kit automatically shut off the water supply to the Water Heater and sounds an alarm, leaving all other household fixtures and appliances operational. Powered by AC Adaptor/Transformer or Batteries. Output contacts available, which allow the Controller to connect with Alarm, Home Automation or Auto-Dialer systems if desired. Easily installed in fifteen minutes. 1-Year Manufacturer's Warranty.

Prevent Water Heaters from flooding your property:
Water Heaters have a limited life, then leak after years of corrosion. Water Heaters are generally considered a maintenance-free appliance, but they are also one of the single most damaging appliances in the home. Because Water Heaters are continually under pressure, even small pressurized leaks can quickly flood and devastate a home. Whether at home, at work, or on vacation these flooding events can go undetected for hours or even days.

FloodStop (FS 3/4-NPT) Components:
  • Motorized Full-Port Ball Valve (3/4 inch NPT pipe threaded)
  • Control Unit (with Battery Backup 4 X C Size)
  • Water/Leak Sensor (1-1/4" X 7-1/2")
  • AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
  • Output Contact Wires (2)


  • FloodStop (FS 3/4-C) Components:
  • Motorized Full-Port Ball Valve (3/4" Compression)
  • Control Unit (with Battery Backup 4 X C Size)
  • Water/Leak Sensor (1-1/4" X 7-1/2")
  • AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
  • Output Contact Wires (2)


  • FloodStop (FS-1-NPT) Components:
  • Motorized Full-Port Ball Valve (1" inch NPT pipe threaded)
  • Control Unit (with Battery Backup 4 X C Size)
  • Water/Leak Sensor (1-1/4" X 7-1/2")
  • AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
  • Output Contact Wires (2)


  • FloodStop (FS 125NPT) Components:
  • Motorized Ball Valve (1.25 inch NPT Fitting)
  • Control Unit (with Battery Backup 4 X C Size)
  • Water/Leak Sensor (1-1/4" X 7-1/2")
  • AC Power Adaptor (or use 4 X C Batteries as Primary Power Source)
  • Output Contact Wires (2)


  • How FloodStops Work:
  • The FloodStop valve is installed between the Water Heater and its manual shutoff valve
  • Water/leak sensor is placed at the base of the Water Heater
  • Valve stays open until water loss is detected
  • Water on sensor closes FloodStop valve and sounds alarm
  • Valve stays closed until problem is attended to and system is reset


  • Without FloodStop, Flooding Will Continue:
    Unexpected appliance failures cause flooding and water damage, which will continue unabated until the problem is discovered and the water supply is manually shut off.

    With Flood Stop, Property Damage is Avoided:
    Water loss from unexpected appliance failures and supply line ruptures are detected by FloodStop's water/leak sensor, and the water supply is automatically and immediately shut off.

    Model # Description Price & Quantity
    FS 3/4-NPT 3/4" Pipe Threaded - Full-Port Motorized Ball Valve (Brass) - lead-free
    Works with any 3/4" MIPT supply line
    $120.96
    FS 3/4-C 3/4" Compression - Full-Port Motorized Ball Valve (Brass) - lead-free
    Works with any 3/4" copper applications
    $129.97
    FS 1-NPT 1" Pipe Threaded - Full-Port Motorized Ball Valve (Brass) - lead-free
    Works with any 1" MIPT supply line
    $140.98
    FS 125NPT 1-1/4" NPT - Motorized Ball Valve (Brass)
    Works with any 1-1/4" MIPT supply line
    Not available for CA/VT residents
    SALE $66.19
    FS 125NPT 1-1/4" NPT - Motorized Ball Valve (Brass)
    Works with any 1-1/4" MIPT supply line
    $143.99
    FSAS Additional Sensor for FloodStop Systems $14.73
    FSTEW Transformer Extension Wires $14.75
    FSC2VEW Controller to valve extension wire - extends reach by 9 feet $14.71
    Customers in CA and VT must order lead free model
    Make sure to follow all of the manufacturer's instructions and directions by performing the proper maintenance and inspections to ensure that you are fully protected from flooding -this is ever-so-important with (man-made) safety devices as they will eventually fail.

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    to many more Flood Stop systems


    - made in U.S., the finest electric tankless water heaters made -

    Small and compact, come in two different models; Flow-controlled and Thermostatic. Flow-controlled models turn on at full power while the Thermostatic unit will adjust its power lever according to the incoming water temperature. Flow-controlled units must be fed with cold water only Thermostatic models can be fed with hot or cold water. Both models are activated by flow

    Help save our environment by saving energy. Stand-by heat loss wastes a LOT of energy. Installing tankless water heaters saves energy, as well as your pocket book in the long run.

    Think future! Think green.


    Think Tankless!

    Note: if you're replacing multiple water heaters (old tank style),
    you may want to order a water heater drain pump to reduce labor by quickly/easily removing the water.




    Frequently Asked Questions

    Q. "Why do I need to fill out an order acknowledgment form when purchasing one of these Eemax Three Phase tankless water heaters?"
    A. The manufacturer requires us to include this form with our shipment request so that they will have verification ("proof") on-file that they manufactured and shipped the correct heater." If you are ordering a 3-phase Eemax heater, you will need to print and fill out the order acknowledgment form, and then fax or mail it to us. Eemax manufactures the 3-phase units to order, therefore, these heaters are not returnable.

    Q. "Why is the max flow lower for the staged turn on?"
    A. The heating modules are set up differently to accommodate different flow rates.

    Q. "What's the difference between the parallel turn on and the staged turn on?"
    A. The parallel turn on will give you a higher maximum flow rate, and it needs a higher flow rate to turn on than the staged turn on. The staged turn on will turn on with a lower flow rate, and it handles a lower maximum flow rate than the parallel turn on.

    Q. "How does the staged turn on work?"
    A. Staged turn on models only use the heating modules needed to produce the desired output temperature.

    Q. "Are all Eemax tankless water heaters designed to be hardwired?"
    A. Yes, every tankless water heater by Eemax is supposed to be hardwired when it's installed.

    Q. "Why does it say 480/277 (or 208/120) in the volts column?"
    A. 480 volts is a phase-to-phase voltage requirement and 277 is the voltage to a LIVE NEUTRAL which is required for this configuration. With 208/120 voltage units the 208 voltage is phase-to-phase and 120 is the voltage to EARTH GROUND - no live neutral is required with this configuration. Please consult a licensed industrial electrician for more information.

    Q. "Does the kW listed under each model represent the amount of energy they use if all the heating elements are on?"
    A. Yes, the specification for kilowatt usage for all models show the maximum wattage with all heating elements on.

    Q. "What does first and second stage mean?"
    A. All of the staged models turn on their heating modules in stages depending on the water flow. Most of the time when the tankless water heater goes up a stage it turns on one or two heating elements. However, for the series 12 models, the first stage has six heating elements turned on and the second stage has all twelve heating elements on.

    Q. "Eemax instant heaters specify the 'temp. rise' based on the GPM flow; what do you mean by this?"
    A. Temperature rise is the amount the heater raises the temperature of the incoming water depending on the flow rate of the water.

    Q. "Will an instantaneous water heater save me money on my utility bills?"
    A. In many applications you can see a savings. There are some variables that could reduce the amount you save. One example is you will not run out of hot water, so longer showers could cut into your savings. Also, the cost of electricity, propane and natural gas in your area will affect the amount of money saved. The higher the cost for the energy type used to heat your water, the quicker you can recover the higher initial cost of installing a tankless versus tank style water heater.

    Positives:

      You will never run out of hot water. "You want an hour long shower? No problem!"
      Electric units can be installed at the point of use.
      You're not paying energy costs to heat water 24 hours a day.
      They're easy to install.
      Our electric units don't require a T&P valve (no tank!) - if code allows
      Installing a tankless water heater can indeed be a bonus to the environment (why should we choose wastefulness when we're talking about finite natural resources?)

    Negatives:

      They all need a minimum flow rate & pressure to turn on.
      The faster water flows through them, the lower the temperature rise. So, if you expect to take a shower while the clothes washer is running, you will need to select a unit sized to your maximum hot water flow requirements. (Gas units generally handle this a little better than electric models)
      Electric units need heavy gauge wire. Example: the 9.5kw must have 8ga wire and a 50amp breaker.
      Gas units need a much larger, special flue pipe and larger gas supply than a conventional water heater.
      At times they can produce very hot water. It's easier to get scalded.
      Gas units are more complicated than a conventional water heater.
      With some brands, parts are hard to find (not a negative if you originally purchase from us, as we like to carry parts for the units that we sell).

    Summary:
    Tankless water heaters have their place. They're not "the answer" to every hot water need, but if they're used correctly they can be the solution to many of them.

    Q. "Why is there a 'no return' policy on three phase units?"
    A. Special 3-phase heaters are models made to-order and therefor these special three phase (most residences do not have that) are non returnable. If you order a 3-phase unit we will ask you to sign something saying that you are sure that you have 3-phase electrical and that you understand that they are not returnable.

    Q. "Can I install these tankless water heaters in my attic?"
    A. Without seeing all of your plumbing piping, etc. it is difficult for us to answer with a straight "yes" or "no." One must be sure that a possible water siphoning condition can not be created as these fantastic electric tankless water heaters can not have air in the lines. Water siphoning out of any brand of electric tankless water heater might damage the heater or element when the element is on and there is no water (or not enough water) in the lines. Air should not be touching the elements.

    Q. "How does the Water Heater Scale Inhibitor System prevent corrosion?"
    A. It forms a thin protective layer on the inside of pipes and metal parts. This film or layer is microscopic in thickness and will not build up over time.

    Q. "Will the Water Heater Scale Inhibitor System change the taste or odor of water?"
    A. No. The active ingredient is colorless, tasteless, and odorless when used as recommended.

    Q. "Is the Water Heater Scale Inhibitor System's active ingredient safe?"
    A. Yes! All ingredients used are 100% pure food grade materials. They are approved by the USDA and meet purity requirements as a food additive by the World Health Organization.

    Q. "What are the best reasons to install a Scale Inhibitor System?"
    A. The system inhibits scale build-up and protects the piping from corrosion, which helps maintain efficiency and extends the life of the system.

    Q. "Can I install this scale inhibitor upside down?"
    A. This scale inhibitor can be installed in any direction with the filter pointing in any direction as long as the water flow direction is correct and the system has suitable pressure to function properly. Please note, the manufacturer recommends that the filter be supported if the Venturi tee is not installed horizontally with the filter outlet pointing downward. Also, if the Venturi tee is not installed horizontally with the filter outlet pointing downward, it may be more difficult to catch the remaining water in the line when replacing the cartridge. As always, please consult with a trusted local professional if you are at all unsure about correctly installing this scale inhibitor.

    Q. "What happens if you don't change cartridges often enough on the Scale Inhibitor System?"
    A. The original water condition and problem will reappear. Hardness will begin to build up again, which you want to avoid.

    Q. "What is siliphos?"
    A. Siliphos is a water treatment compound; a glass-like Polyphosphate containing Sodium, Calcium Magnesium and Silicate, formulated specifically for the treatment of water problems and to prevent the build-up of scale in plumbing. It is made from a blend of food grade organic phosphates, and has been approved by the USDA for drinking water and all food applications. It is safe for ingestion by humans, animals, and plants, and does not build up in waste water.

    Q. "What does it mean to have ANSI Certification for lead free plumbing products?"
    A. Laws requiring plumbing products that come in to contact with drinking water to be essentially lead-free (0.25% weighted average) have been passed in California, Louisiana, Maryland, and Vermont. In order for companies to ship these plumbing products to locations in CA, LA, MD and VT, they must be ANSI certified lead free.

    Q. "What is CA AB 1953, LA Act No. 362, MD HB 372, and VT S.152 and how is this different from previous low-lead legislation?"
    A. The United States Environmental Protection Agency (EPA) regulates the amount of lead in drinking water under guidelines established in the Federal Safe Drinking Water Act (passed in 1974; amended in 1988 and 1996). This Act defines "lead-free" as not more than 8% lead in pipes and fixture fittings. PLEASE NOTE: Use of the term "lead-free" varies between the new legislation in CA (AB 1953), LA ( Act No. 362), MD (HB 372), and VT (S.152), and in the current Federal Safe Drinking Water Act requirements. In the new legislation for CA, LA, MD and VT only (as of Jan 2013), it will mean 0.25% or less (weighted average). Similar national legislation is scheduled to go into effect Jan 2014.



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