Stiebel Eltron DHC-E12 Electric Tankless Water Heater

If you are fan of German technology and engineering you may have heard of Stiebel Eltron for their specialty in making water heaters. This firm is in this business from 1924 so naturally they have put into R&D a lot to find out solution for different needs. The need of hot water on demand, constant temperature maintenance, saving spaces, letting indoor tankless water heater to function for years are met through the model of Stiebel Eltron DHC-E12 Electric Tankless Water Heater. If you are looking for a whole house Electric tankless water heater and have 2- 4 bathroom you can check out this product.

Stiebel Eltron DHC-E12 Electric Tankless Water Heater


Digital Temperature control

Stiebel eltron tankless water heater has a convenient digital dial to control the heat .You can choose any temperature in between 86 Degree f (30DegreeC) to125DegreeF (52DegreeC).This wide range makes it possible to have a hot shower at whatever inlet temperature of your water is.

Micro mini size

Well I may have exaggerated the size by the phrase micro mini but in compare to other tank or tankless water heater it is really very tiny. With 4.1 x 7.9 x 14.2 inches specifications you do not need to hide it behind a cabinet it is already near to invisible. And wit 6 pound weight it is very light to carry.

Stable temperature

Stiebel Eltron DHC-E 12 maintains a steady temperature even though the variable flows of water. Its electronic temperature Control compensates for fluctuations o f flow rate and the incoming water temperature and maintains a constant temperature output. Their smart microprocessor technology monitors information from the flow sensor and two temperature sensors. The microprocessor than adjusts the heating elements.

Reduces electricity consumption

Once you switch to Stiebel Eltron DHC-E12 Electric Tankless Water Heater you will experience at least 20% reduction on your electricity bill in compare to tank water heater. This point of heat technology only runs when senses a flow of water. While you are in a vacation, out of home at daytime your heater will not be working or consuming power (unlike tank heaters). Best electric tankless water heater reviews say reduction in utility bill is one thing will surely guarantee your ROI in first 5 years

No venting needed

If you have had gas fired tankless water heater you know why I bullet this point as a good feature. It is not very much of a hassle yet it definitely is a concern, whether your house has that nook where hanging your heater will get enough space for ventilation. In some cases venting needs are big enough to not let you put the heater inside home. You may require venting valve, duct systems to let the extract go away. With Stiebel Eltron DHC-E12 Electric Tankless Water such worries can rest, as it does not need any venting at all.


  • Space saving
  • Hot water on demand
  • 3 year warranty on parts
  • Very easy installation
  • For both residential and commercial use

Cons with solution

Not suitable for high demand

Stiebel Eltron DHC-E 12 is barely border line with a home two people so if you are planning to install it for a home with any more people than it is not suitable.


In cold inlet temperature of 32 degree farenheight Stiebel Eltron DHC-E 12 can support 4 faucets at maximum with a flow of GPM of 0.5.

In warmer climate 65 degree or above Stiebel eltron tankless water heater can support 5 faucets with 0.5 GPM and 2 faucets if GPM is 1.5. So whether you can use it for home with people more than 2 or 4 depends more on how often your faucets are busy at the same time and what is your inlet water temperature.

Not good for hard water condition

Stiebel Eltron water heaters are functional only for water condition with PH 7, so before you buy one get your water level tested.


German company Stiebel Eltron water heaters are susceptible to hard water condition. Especially if your water PH is very far from 7 than it is possible that after some time it may show sign of not turning off even though no water flow is detected. This eventually will lead to bigger issues and broke down of the heating system. To avoid it you can use water softener extraction that is available in market in your reserved tank .You need to periodically clean the heater valves too for longevity.

Solely run by electricity

It has single power source to depend onto that is electricity.


It runs on electricity, no option to use dual power source like-battery or gas. However in USA most places have electricity support to run in the home; still if you are looking for a water heater that can also run on battery or gas than Stiebel Eltron DHC-E 12 is not for you.

Frequently Ask Questions (Q&A)

  • Q – I previously bought an electrical water heater but could never install it for my wiring did not support it. What electrical configuration is required for this one?
  • Ans- Before you make the decision of buying be sure of the tech specs, like it needs single 50/60 Hz phase. Can run on 240 V or 208 V. Need wattage of 12 kW (for 240 V) 9 kW (for 208 V) Amperage. Minimum recommended circuit breaker is 50 A. Min. recommended wire size- 6 AWG.
  • Q- What is the minimum water flow rate to activate StiebelEltron DHC-E12 Electric Tankless Water Heater?
  • Ans- Min. water flow to activate unit 0.264 GPM.
  • Q- What is the maximum outlet temperature it can support my weather is kind of extreme?
  • Ans- Stiebel Eltron DHC-E 12 can support Max. Inlet water temperature of 131°F or 55°C.


Stiebel Eltron DHC-E12 Electric Tankless Water Heater is super small probably the smallest in the market with this much capacity. You should not take the size as an efficiency level determining factor, because so far most users rated it 4.5-to 5 stars as a whole house heater. So if your home has 2-4 wash rooms and occasionally you need to use 2-3 faucets at a time than Stiebel Eltron DHC-E12 Electric tankless water Heater is a reasonable priced catch.

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