Stiebel Eltron Tempra 29 plus Review

Stiebel Eltron Tempra 29 plus Electric Tankless Water Heater, is the second highest capacity Tempra series water heater from Stiebel Eltron. This German company has 12, 15, 20, 24, 29, and 36 plus these six versions of Tankless Water Heater under the series of Tempra, for different size of need. If you are a fan of German technology, you know how solicitous they are to make the advanced product. 

Stiebel Eltron

Tempra 29 is ideal for a small home where the temperature drops up to 40 degrees or more, at this inlet temperature it produces 3 Gallon per minute. A standard shower with 2.5 GPM can work with a standard wash basin 0.5 GPM flow. It is also suitable for, where two bathroom house in inlet temperature 55 degrees to 75 degrees.

=====>>> In a hurry? You can check Amazon to see the Stiebel Eltron Tempra 29 plus.

What Is Interesting About the Stiebel Eltron Tempra 29 plus?

Same temperature despite the change in flow

In the case of tankless water heaters, the temperature can vary as the flow rate varies. This can cause distorted situation especially if you are I middle of a bath. Stiebel Eltron realized this problem and introduced Tempra Advanced Flow Control technology. If water is freezing and comes with greater flow Tempra flow control reduces the flow to keep the temperature hot as selected even though the water pressure becomes low.

Endless hot water

Stiebel Eltron Tempra 29 plus Electric Tankless Water Heater has smart microprocessor technology in a Tempra® allows you to set the knob and get that temperature every time a hot water faucet is opened. Stiebel Eltron’s Electronic Temperature Control ensures a steady output temperature when the flow is uncontrolled, their smart microprocessor technology monitors the heat and maintain it endlessly.

Unlimited Supply of Hot Water

No venting required

I used to have an indoor gas-fired tankless water heater it was excellent, but I did not quite like the idea of gas emission through my home roof. Also setting the unit at a place maintaining side spaces safe for exhausting was quite tricky for my home size. Tempra Plus 29 kW is much better in that respect because it needs no venting. It is an all-electric water heater so you can install it anywhere without being troubled about the air pollution and venting space requirement.

Good looks

Tempra Plus 29 kW with 21.8 x 19.2 x 9 inches and 17.4 pounds has a narrow outlook. In comparison to the conventional water heater, it saves 12 cubic feet and can fit into any corner of your home.

Digital temperature control

Tempra® Plus models have convenient digital temperature control, offering a scale of 86°F (30°C) to shower temps of 107°F (42°C), up to 140°F (60°C) for commercial applications. Once you choose a temperature for the whole bath, you are guaranteed to get it until the end. However, if you chose high temperature more electric consumption will occur.


What People Like

  • Easy Installation
  • Works with both 208/240 volt standard electrical wiring.
  • Three-year limited warranty for both domestic and commercial usage
  • It is ETL Listed (US & Canada) – which means it meets all applicable standards, as well as ANSI/UL 499 (USA) and CSA-E335-1/3E-94 (Canada)

What People Do Not Like

Very bad with hard water condition

It can work at your home if you have water with PSI more than 150 and less than 300. Which is quite a high standard so do not bother to install it with PSI less than or beyond that range?


Water hardness is something responsible for many water fixtures to fail early. Test you PSI if your fixtures are failing, or you are having scruples whether your water quality is the villain. When your water hardness exceeds 7 grains per gallon (GPG) or 120 mg/l (ppm), it is called hard water and requires special treatment. Before you go for Stiebel Eltron Tempra 29 plus or any other water heater you should consider hard water treatment. Hard water causes premature failure of water fixtures owing to mineral build-up inside the heating module and other components. Also once your water is sorted water flow will be optimum, fixtures will run longer and complain free.

It functions poorly at the beginning

It does not give you hot water at the very beginning; you have to wait 10 seconds or more for the hot water.


It is a standard issue with Tankless units. A flow sensor senses the minimum flow and starts the heater burner. This has a right side a wrong side; right side is- It reduces your electricity cost than the conventional heaters by not being at a function when idle, demerit is it makes you wait 5-7 seconds at the beginning for hot water. If you can install a re-circulation pump from the market which cost much less than a heater than such waiting period will evaporate.

Commonly Asked Queries for Tempra Plus 29 kW

Q-Does it takes a while to heat up?

Ans-Yes it does. If you are living in freezing weather, it may take some more time to heat up but once the desired temperature is achieved it works flawlessly to keep it hot until the end.

Q-How many amps it needs? How many breakers should I install with it?

Ans- It needs 3 x 40 AMP breakers that are 3 unit of 40 amp breaker. It needs maximum 120 AMPS when used with 240v line and 105 AMPS 208v line. It needs 3 x 8 AWG copper wire

Q-How much GPM is required for activation?

Ans- The burner starts when- 0.77 GPM /2.9 LPM minimum flow is achieved.

Q-How many GPM it offers? If I want a 105°F outlet temperature.

Ans- Your inlet temperature is the deciding factor of how many GPM it will produce for a desired 105°F outlet temperature, at 40°F it gives 3 GPM at 55°Fit can produce 4 GPM at 65°F it gives 5 GPM I hope you got the picture

List of On Demand Water Heating Stiebel Eltron Tankless Water Heater

What’s The Best Price for the Tempra 29 plus and where can I buy it?

When you are ready to purchase your tempra 29 plus, there are several options both online and in traditional retailers. Your best option for purchasing online is through Amazon which has the most competitive prices. Amazon regularly adjusts their prices in order to give you the best price. So, you should check Amazon to see what their most recent deals are and to see if they are offering any specials on shipping.

Verdict: Is this stiebel eltron water heater for you?

Tempra 29 plus Electric Tankless Whole House Water Heater is ideal for a medium sized home with 2 to three bathroom. It has 99% efficiency. At a temperature of 35-40 degree it is usable for a single appliance at a time (for faucet two faucet or 1 faucet a washing machine/dishwasher can work with 3 GPM). If used for a dedicated one shower at the colder weather it works perfectly. If your temperature is beyond 50-degree f than this can do wonder, for best results I recommend, do not overburden it with multiple appliances. So if you have space challenges and moderate need this smart water heater is a perfect, especially accompanied with Solar Thermal Hot water preheating for very cold weathers.

Click Here to Leave a Comment Below 0 comments