Model # EMT4

Internet #203985244

Eemax 4.0 gal. Electric Mini-Tank Water Heater

Discontinued Eemax

4.0 gal. Electric Mini-Tank Water Heater

  • Same-day installation in most areas. Call 1-855-400-2552 by noon.
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Product Overview

Eemax Electric Mini Tanks offer 99% thermal energy efficiencies that pays for itself. Eemax's mini tanks minimize stand-by heat loss - don't pay for keeping water hot in a large storage tank 24/7 Saving energy also means you are reducing your carbon footprint. Enjoy up to 90% space saving compared to large tank water heaters. This means you can put your Eemax heater anywhere. With Eemax Mini Tanks dangerous temperature levels and spikes are no longer a problem. Mini Tanks run on safe electricity, no venting required or carbon monoxide danger. You can expect decades of trouble free performance from your Eemax Mini Tanks and can last nearly twice as long as a tank heater.

  • Endless hot water
  • Electric tankless water heater is 99% energy efficient, the power you use goes into the water, not up the chimney
  • No recovery necessary, never run out of hot water again
  • Limited warranty: 1 year parts, 5 year leaks
  • Precise temperature controls, prevent scalding
  • Finger tip temperature control delivers safe hot water
  • Thermostatic control
  • Flow device activates heater only on demand (no standby heat loss)
  • No venting or extra piping
  • Compact design - no need for a bulky tank
  • Microprocessor thermostatic control +/- 1 DegreeF
  • Tested by independent laboratory to maintain water purity

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)
Tank Valve Size (in.)
Water Connection Size (in.)
1/2" NPT


Application Type
Point of Use
Finish Family
Fuel Type
Maximum Temperature (F)
Minimum Temperature (F)
Nominal Tank Capacity (gallons)
Product Weight (lb.)
Tank Capacity (gallons)
Water Connection Location
Water Heater Features
Temperature Pressure Relief Valve,Wall Mountable
Water Heater Profile
Wattage (watts)

Warranty / Certifications

Certifications and Listings
1-UL Listed
Labor Warranty
No Warranty
Part Warranty
1 Year

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Customer Questions & Answers

How many watts does it consume?

It appears to have a 120 volt,15 amp plug, which would mean that it could draw 1800 watts max, but how many watts does it actually draw?
Asked by: Bmorespecific
1440 watts ~12amps 120volt plug
Answered by: Zippy
Date published: 2017-02-14

Will this unit supply enough hot water for a dishwasher?

Will this unit supply enough hot water for a dishwasher?
Asked by: Mike
Yes I'm sure it will even as stand alone. Dishwashers only use a couple of gallons, and the time between wash cycles will be sufficient for the water temp to recover. A tip for kitchen installations, connect the existing hot water to the inlet of the mini tank.
Answered by: Handyman
Date published: 2016-12-23

How many volts does it require?

How many volts does it require?
Asked by: smlpkg
110-120v 12amps from the user manual
Answered by: jar
Date published: 2016-12-08

Can it be installed on a flat surface

Asked by: jimmy
Yes, the water heater can be installed on a flat surface.
Answered by: CommunityAnswer
Date published: 2016-12-18
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Customer Reviews

4.0 gal. Electric Mini-Tank Water Heater is rated 4.8 out of 5 by 13.
Rated 5 out of 5 by from Easy to install,easy to use Doesn't get scalding hot, but certainly hot enough for a hot shower!
Date published: 2013-10-30
Rated 5 out of 5 by from Water Heaven I work at a construction company that employees had become accustomed to frigid water so cold it was almost painful to wash your hands or wash out a paintbrush at our equipment yard. Some one had ripped off the previous water heater and the closet were it was located also repurposed. Being a plumber I could not let this go on. Due to space restrictions and application I went with the mini electric water heater, never putting one in before I was skeptical even thinking I should put in a gas on demand heater, but with time being a factor I went electric and couldn't be happier. I even had to turn down the temp easily adjustable on the front. The water heater came with two Lags and a mounting bracket and weighing nothing was mounted in a tight congested space in the ceiling in no time with no worry about venting. I would highly recommend this product when your demand is minimal and space is limited. Besides my guys drywall texturing the water heater it works perfect and most people are washing there hands now!
Date published: 2015-02-10
Rated 5 out of 5 by from The unit is very light weight and easy to mount. The only issue I had was connecting the flex lin... The unit is very light weight and easy to mount. The only issue I had was connecting the flex lines to the tank fittings. I think a different tank supply fitting would simplify installation. Had 120* water in less than ten minutes.
Date published: 2016-12-08
Rated 5 out of 5 by from excellent product We love it, turn on hot water and count 1,2 it's hot. Luckly we had a outlet under the sink for a disposal, if not you will need an electrician to wire one.
Date published: 2015-04-20
Rated 5 out of 5 by from Works great! Heats fast, high power. However, l had to take it to the store to figure out what fittings l need to install it. The manual was no help.
Date published: 2017-01-31
Rated 5 out of 5 by from Eemax 4.0 gal Minl Tank water heater Excellent water heater! Installed it in out camper and never run out of hot water .
Date published: 2017-01-31
Rated 5 out of 5 by from Good heater Heater was easy to install and works well. I use it in a low use situation where it is used primarily for washing hands so low volume of hot water is required. After a month of use, it has worked well for me.
Date published: 2014-07-29
Rated 4 out of 5 by from New Product Design The manufacturer has redesigned the EMT4. I just got mine today and it will not fit under my sink unless I take the drain pipe apart. I have 12" of clearance, but instead of the EMT4 being 19.5H x 12.0W x 11.5D the new design is about 13 inches square and about 18.5 inches high. I can't review how the EMT4 works since I haven't installed it, but it appears to be well built.
Date published: 2015-03-05
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