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



Instantaneous Water Heaters - Electric

by Eemax


Tankless water heating is no longer a thing of the future: It is here today and here to stay! PlumbingSupply.com® is your source for tankless water heaters. Whether you need electric, propane, natural gas, point-of-use or whole house; you're sure to find just the system for your home or business needs at www.PlumbingSupply.com®.

Series Three Whole House Electric Tankless Water Heater (Three Heating Elements)
Eemax series 3 water heater This whole house electric tankless water heater features:
  • Designed for two full baths and kitchen
  • Instant hot water;no delay
  • Reduces calcification and sedimentation
  • Staged heating modules save energy
  • Compact size (15-1/4" x 12-1/4" x 4-1/4")
  • Single phase models
  • Regulates power to required flow (thermostatic control)
  • Comes with fitted 3/4" NPT water connections with thermal cut out
  • T2T option - thermostatic (staged turn on) turns on with at least .7 GPM, and the Maximum flow is 4 GPM for the water heater
  • T3 option - thermostatic (parallel turn on) turns on with at least 1.8 GPM, and the Maximum flow for the water heater is 5 GPM
  • NOTE: This unit is designed for wall mount.
SERIES THREE Eemax Tankless Water Heater (Three Heating Elements)
Model# Volts kW Amps °F Rise
@ 2.5 GPM
°F Rise
@ 3.0 GPM
°F Rise
@ 4.0 GPM
Price & Quantity
EX280 (T2T) 240V 28.5 120A 76° 65° 49° $831.18
EX280 (T3) 240V 28.5 120A 76° 65° 49° $859.72

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Specifications for EX280 (T2T) Whole House Electric Tankless Water Heater
(Four Heating Elements)
Eemax series 3 water heater specification
Dimensions: 15-1/4" x 12-1/4" x 4-1/4"
Weight: 12 lbs.
Volts: 240 Volts
kW: 24kW
Amps: (3 x 40) = 120 Amps
Temperature Rise: 2.5 GPM @76°F
3 GPM @ 65°F
4 GPM @ 49°F
Turn On: 0.7 GPM
Materials: Cover: Enameled Steel
Color: White
Element: Triple replaceable Ni Chrome cartridge element inserts
Pipe Fittings: 3/4" NPT at bottom of unit (5/8" OD) or 3/4" NPT adapter
 
IMPORTANT NOTE: Please notice:
  1. Notice that the electrical power needed is a minimum of 24KW rating (120 amps) at 240 volts. Please be sure that you have that much wattage available. 120 amps JUST for your water heater is a lot of power requirements and not all homes have that available.
  2. Notice the heat rise of 3 gallons per minute at 65 degrees. That is not enough of a heat rise for a whole house for many people. It depends on your expectations, household size, needs, lifestyle, etc. Many people are thrilled with that much heat rise and energy savings, but you might not be. If you are expecting this whole house electric tank-less water heater to produce the same amount of heat rise as a "standard storage water heater" you will be very disappointed. An example of the heat rise rating is that if your water source is only 45 degrees (F) then you will only see 3 gallons of hot (warm) water at 110 degrees. That is not enough for a family that wishes to take a shower while also doing the dishes and laundry. A family that installs one of these electric whole house water heaters can save a lot of money on their energy bills but must modify their water usage.



Series Four Whole House Electric Tankless Water Heater (Four Heating Elements)
Eemax series 4 water heater This whole house electric tankless water heater features:
  • Designed for three full baths and kitchen
  • Instant hot water—no delay
  • Reduces calcification and sedimentation
  • Staged heating module saves a lot of energy
  • Comes with fitted 3/4" NPT water connections with thermal cut out
  • Compact size (20-3/16" x 12-1/8" x 4-1/8")
  • Single phase models
  • Regulates power to required flow (thermostatic control)
  • T2T2 option - thermostatic (staged turn on) minimum flow .7 GPM, the maximum flow is 5 GPM for the water heater
  • T4 option - thermostatic (parallel turn on) minimum flow 1.8 GPM and the maximum flow for the water heater is 8 GPM
  • NOTE: This unit is designed for wall mount.
SERIES FOUR Eemax Tankless Water Heater (Four Heating Elements)
Model# Volts kW Amps °F Rise
@ 2.5 GPM
°F Rise
@ 3.0 GPM
°F Rise
@ 4.0 GPM
°F Rise
@ 5.0 GPM
°F Rise
@ 6.0 GPM
Price & Quantity
EX380 (T4) 240V 38 160A 103° 86° 65° 52° 43° $1016.48
EX380 (T2T2) 240V 38 160A 103° 86° 65° 52° 43° $1013.74

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Specifications for EX380 (T2T2 & T4) Whole House Electric Tankless Water Heater
Eemax series 4 water heater specification
Dimensions: 20-3/16" x 12-1/8" x 4-1/8"
Weight: 23 lbs.
Volts: 240 Volts
kW: 38 kW
Amps: (4 x 40) = 160 Amps
Temperature Rise: 2.5 GPM @ 103°F
3 GPM @ 86°F
4 GPM @ 65°F
5 GPM @ 52°F
6 GPM @ 43°F
T2T2 Turn On: 0.7 GPM
T4 Turn On: 1.8 GPM
Materials: Cover: Enameled Steel
Color: White
Element: Four replaceable Ni Chrome cartridge element inserts
Pipe Fittings: 3/4" NPT Male inlet & outlet fittings with bottom electric entry
 
IMPORTANT NOTE: Please notice:
    Notice that the electrical power needed is a minimum of 38KW rating (160 amps) at 240 volts. Please be sure that you have that much wattage available. 160 amps JUST for your water heater is a lot of power requirements and not all homes have that available.



Lead-Free Ball Valves - click here for more lead-free ball valves
lead free ball valve
These lead free ball valves feature:
  • Keepalloy® lead-free alloy
  • Full port design keeps flow unrestricted
Description Price & Quantity
Lead-Free Ball Valve - 3/4" FIPS $11.68
Lead-Free Ball Valve - 3/4" Sweat $10.29
Stainless Steel Nipple - 3/4" IPS x 1-1/2" Long $3.35

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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
  • UPC and ASME A112.18.6 compliant
  • IAPMO listed
  • 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

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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
  • 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
  • Venturi tee is constructed from stainless steel and meets all low lead requirements for both federal and state
  • Scale Inhibitor media is siliphos which is 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 cartridge 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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FloodStop Systems for Water Heaters
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.




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.
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

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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 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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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.



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!



Frequently Asked Questions

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. "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. "Is it possible to drain a tankless water heater to prevent freeze damage when not in use?"
A. Yes. Simply drain both lines 'to' and 'from' the unit. As long as there are no check valves in the way, that should drain the water from the unit. To guarantee that there is no water in the unit, we recommend two drain valves - one before and one after the unit - as well as blowing air through the water line.

Q. "If these units don't have a tank, how do they know when to turn on?"
A. The tankless water heaters have a flow switch built into them. When you turn on (open) the hot side of a faucet the water then moves (travels). Once the water is traveling at 3/4 of a gallon per minute or faster most tankless water heater switches will then turn on the gas or electricity. For this Eemax whole house model Ex280T2T, the turn on rate is .7 gallons per minute (GPM).

Q. "Can I replace my existing tank type water heater with a tankless water heater?"
A. Yes, but there are specific requirements that will need to be addressed. Gas units will require a larger, special vent pipe and a larger gas supply line that not only will supply the water heater, but all other appliances on that gas pipe run. Electric units will require larger gauge wire and breakers than most tank type water heaters.

Q. "There are many companies selling all kinds of tankless water heaters. Why should I buy an instantaneous electric water heater from you rather than elsewhere?"
A. We are a large, reputable company that was here yesterday and we will be here tomorrow. We are often copied, but we don't believe that any one can match our service and certainly our base of satisfied customers is larger than any Internet plumbing supplier since 1995. We sell 1000's of other quality plumbing products as well, so you can rest assured that we know plumbing products. We are a very stable and reputable company. We love to sell what we believe in, and we definitely believe in the quality of Eemax for their superior electric-tankless water heaters.

Q. "In the specifications for the Eemax Ex280T2T, you note the 'temperature 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, based on the flow rate shown. In the specifications shown above for the EX280-T2T, there is a 65°F rise in temperature at a 3 gallons per minute (GPM) flow rate.

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. "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. "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. "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. "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 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.

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 scale inhibitor system's active ingredient safe?"
A. Yes! All ingredients used are 100% pure food grade materials, are safe for ingestion by humans, animals, and plants, and do not build up in waste water. The organic phosphates used are approved by the USDA and meet purity requirements as a food additive by the World Health Organization.

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.

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