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12 kW Real-Time Modulating 2.3 GPM Electric Tankless Water Heater

$22736
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  • Provides ample hot water for households with up to 2 people
  • Consult electrician.Requires 1-60 Amp Double Pole Breaker
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.
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Price:
$22736

Product Overview

The IHeat Electric Tankless Water Heater Model S-12 has the capacity of heating 2.3 GPM which is the equivalent to 1 showers (at 1.5 GPM each), and 1 sinks (at 0.75 GPM each) simultaneously, or any combination which equals to 2.3 GPM. The S-12 can handle these applications in the warmer climates of the US which are Florida, Georgia, Louisiana, Texas, Arizona, California, Alabama, and Mississippi. Anything north of these States the Model S-16 can be used for point of use, or 1-application at a time. A good rule of thumb is if you live in the southern states mentioned here the S-12 can power a 1 to 3 bedroom 2 bathroom home, including dishwasher and clothes washer, please keep in mind that tankless water heaters are designed to heat incoming water at a maximum output temperature based on simultaneous use and inlet water temperatures. So if your demand for hot water decreases your output water temperatures will increase, as well as if you live in the colder states this S-12 will heat less volume of water, this will cause the S-12 to be used in Point of Use applications in the colder climates.
  • IHeat S series is a lead free certified product
  • IHeat S series electric tankless water heater, its manufactured in complete stainless steel boasting an IXP-4 water proof construction, the IHeat stainless steel construction is a perfect fit for any applications near the ocean, like beach front properties, yachts, small boats, resorts and outdoor kitchens
  • IHeat S series can also be used in highly sterile applications like commercial kitchens, hospitals, clinics, and even schools where cleanliness is of the highest importance
  • IHeat S series saves valuable space with its compact size, the S series compared to tank type water heaters, is small enough to fit any under counters installations or even closets
  • IHeat water heater saves you up to 60% on your water heating costs, as its patent pending closed loop modulation and also with an industry leading activating quarter GPM activating flow rate allows you to enjoy safe efficient and calculated power draw based on your behavioral use of the heater, using real time data
  • Water proof construction allows you to easily and safely control the temperature by using our water proof interactive touch pad, allowing you to choose a range of temperatures from 80°F to 140°F (DOE recommends setting heaters at 120°F)
  • IHeat water heaters come with an easy straight forward product warranty, we understand not everyone is a certified electrician, and not everyone is a contractor, therefore all we ask for you to have your warranty honored is a simple copy of your proof of purchase and we will honor the industry simplest and most effective 3 year internal electrical components and 5 year due to leaks limited warranty
  • Choose the correct iHeat Tankless Water Heater by identifying incoming water temperature and the maximum flow rate desired

    Drakken Tankless Water Heater

  • Choose the correct iHeat model for your household needs

    Drakken Tankless Water Heater S Model

  • Make sure the model you choose services your household applications

    Drakken Tankless Water Heater Buying Guide

Info & Guides

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12 kW Real-Time Modulating 2.3 GPM Electric Tankless Water Heater
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BrandIHeatRheemRheemIHeat
Name12 kW Real-Time Modulating 2.3 GPM Electric Tankless Water HeaterPerformance 8 kW Self-Modulating 1.55 GPM Tankless Electric Water HeaterPerformance 18 kW Self-Modulating 3.51 GPM Tankless Electric Water Heater24 kW Real-Time Modulating 4.6 GPM Electric Tankless Water Heater
Price
$22736
$25000
$43400
$47366
Ratings
(96)
(1395)
(1394)
(96)
Flow Rate @ 45°F Rise (gallons/min)1.811.212.733.63
Application TypeResidentialResidentialResidentialResidential
Wattage (watts)1300080001800024000
Number of Showers1-21-21-21-2
Indoor/OutdoorIndoorIndoorIndoorIndoor,Outdoor
Efficiency LevelSuper HighSuper High Super High
Water Heater FeaturesOverheat Protection,Wall MountedWall MountedWall MountedOverheat Protection,Wall Mounted
Fuel TypeElectricElectricElectricElectric
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
3.5
Product Height (in.)
11.5
Product Width (in.)
7.7
Water Connection Size (in.)
1/2" inch compression, NPT Adapter available upon request

Details

Amperage (amps)
54
Application Type
Residential
Commercial/Residential
Residential
Efficiency Level
Super High
Electric Product Type
Commercial & Residential
Finish Family
Silver Metallic
Flow Rate @ 35°F Rise (gallons/min)
2.33 gal (US)/min
Flow Rate @ 45°F Rise (gallons/min)
1.81
Flow Rate @ 55°F Rise (gallons/min)
1.48
Flow Rate @ 65°F Rise (gallons/min)
1.26
Fuel Type
Electric
Heat Exchanger Warranty
1 Year
Indoor/Outdoor
Indoor
Maximum Temperature (F)
140
Minimum Activation Rate (gpm)
.25
Minimum Temperature (F)
80
Number of Showers
1-2
Pack Size
1
Product Weight (lb.)
7.4
Required Volt Connection
240 volt
Returnable
90-Day
Uniform Energy Factor
9.99
Water Heater Features
Overheat Protection,Wall Mounted
Wattage (watts)
13000.000
Wattage (watts)
13000

Warranty / Certifications

Certifications and Listings
CSA Certified,ETL Listed,NSF Listed,UL Recognized
Labor Warranty
1 Year
Part Warranty
3 Year

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 3.8
    out of 96 reviews
  • 75% recommend this product
Filter by:
Showing 1-10 of 96 reviews
My 3rd one
This is my 3rd time replacing one. Calcium deposits for FL water and can’t change sensor. E4 errors all the time.
by KG
    Works great. Plenty hot water. Supplies bathroom shower, kitchen sink, washing machine. Do your r...
    Works great. Plenty hot water. Supplies bathroom shower, kitchen sink, washing machine. Do your research. Look at the water lines orientation and understand how it will affect your installation. Also any electric changes. Ordered from an online sale. Saved almost $100. Home Depot will watch your back if there are any pronlems with your products.
    by Rick
    • Verified Purchase
    • Recommended Product
    Warning: Our incensed plumbers did not use the supplied compression couplings (which are not a st...
    Warning: Our incensed plumbers did not use the supplied compression couplings (which are not a standard thread): Couplings leaked after several attempts; finally received new fittings from Iheat to repair the unit. USE THE FITTINGS SUPPLIED FROM THE MANUFACTURER FOR 14 kW Real-Time Modulating 3 GPM Electric Tankless Water Heater.
    by NoSnails
    • Verified Purchase
    • Recommended Product
    2 people found this helpful
    This tankless water heater was fairly easy to install. Reasonably priced for outdoor rated. Very ...
    This tankless water heater was fairly easy to install. Reasonably priced for outdoor rated. Very pleased with this unit.
    by PAforSSP
    • Verified Purchase
    • Recommended Product
    I bought this to replace a small, conventional water heater that served one shower and sink in an...
    I bought this to replace a small, conventional water heater that served one shower and sink in an apartment in my house. Other brands were either too big or too small; this one was just right. I was concerned that it might not raise the water temperature enough here in Washington but it produces very hot water. Another cool thing is it's small enough to fit between the studs. The only thing is, I can't figure out how to regulate the temperature on the unit, but otherwise, it's perfect. I purchased a scale filter to go with it to prolong the life and insulated the wooden access door to prevent freezing (it's on an outside wall, as shown in the picture). Note that you will need a 220 volt, 60 amp circuit to power this little guy.
    by Bill
    • Verified Purchase
    • Recommended Product
    4 people found this helpful
    We live in Ohio in a two bedroom, one bath home. There are only two of us and have a 100 amp main...
    We live in Ohio in a two bedroom, one bath home. There are only two of us and have a 100 amp main with a 60 amp breaker for the hot water. We didn't figure we needed much but past experiences with tankless heaters taught us that we at least wanted to get a full flow shower. We have it with this one! It delivers what it says! Of course, if you run water any where while in the shower it effects the temperature, but it will bounce back right away. So only do one thing at a time :) With only two of us, this is easily done. Hook up was a breeze with new push fittings on the market. I gave this water heater a four because I voided the warranty by hooking it up myself. With such a simple hook up, I'm disappointed with that. I also haven't had this very long and would like to know if people are still pleased after a couple years. One last thing, we have some of the "cleanest" city water in Ohio and still need a filter before it goes into the water heater because of chemicals and sediment. Do yourself a favor and put one in beforehand and a back flow valve. This should make it last a couple extra years.
    by cupcake150
    • Verified Purchase
    • Recommended Product
    7 people found this helpful
    Unfortunately, these units only work for about 12 months. The the flow switch stops the units and...
    Unfortunately, these units only work for about 12 months. The the flow switch stops the units and you have to purchase a replacement. This is our 3rd unit and it is getting very annoying to replace these every year. The manufacturer customer service staff has a terrible attitude and will literally laugh at you over the phone if you just ask for a receipt of your transaction.
    by Robintampa
      12 people found this helpful
      Good Unit But Correctly Select The Right Model
      I purchased this model to replace a Bosch unit that -after three years of stellar service- literally melted and almost caught fire. Apparently, a hot leg inside the unit became disconnected. Compared to the Bosch unit that it replaced, the iHeat S-9 is solidly built. It has a sealed, brushed stainless body compared to a molded plastic one. It has no serviceable parts inside, and to open the unit would void its warranty. Further, the iHeat has an easily adjustable up/down button to adjust the water temperature. It also has a red digital display of the current water temperature. On the iHeat S-9, the water inflow and outflow is through right and left sides respectively via 1/2 inch copper compression fittings. The electrical connection is made through a 2 foot pigtail. Each of these was significantly different to the Bosch unit where water enters and exits the bottom via threaded fittings, and the electrical connections were made inside the unit itself. The installation was consequently not a simple "buy and replace" project but took some time. In addition, the iHeat unit requires that on both inflow and outflow sides, the installer use at least 36 inches of copper pipe. This was somewhat challenging to accommodate in a small kitchen cabinet where I mounted the unit. Over all, however, a DIY job lasting a day with proper planning and material, assuming you have a dedicated 240 circuit to the location. In my opinion, spend some time determining which unit to buy based on the rate of rise necessary given your typical water temperature. In my circumstance, I use the S-9 to heat water coming into my kitchen faucet and dishwasher. I live in the East Bay of San Francisco where our water temperature coming into the unit is typically about 55-60 degrees. While I set the unit for 125 degree output, I have yet to receive this temperature. Typically it produces 115 degree water; good but not exactly what I had hoped. I probably should have gone up a model as my wiring size would have supported that selection, but ...you learn. Also, given my prior experience with the Bosch unit, I recommend a 50 amp 240 volt GFCI breaker that does not require a neutral. The iHeat S-9 draws 41 amps at 240 volts and does not utilize a neutral, only two hot legs and a ground. Having such protection might preclude damage to the unit if one leg becomes disconnected, and of course, is just plain sensible.
      by JAG315
      • DIY
      • Verified Purchase
      • Recommended Product
      12 people found this helpful
      by EDDIE
        by JOSEPH
          Showing 1-10 of 96 reviews