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Stiebel Eltron Tempra 36 Plus (New 3rd Gen.)

Stiebel Eltron Tempra 36 Plus Electric Tankless Water Heater

The 36KW Stiebel Eltron Tempra 36 is one of the most powerful electric tankless water heaters on the market. It was designed primarily for higher flow rate applications in cold climates like ours where the incoming water temperatures can drop below 5°C or for commerical applications.

The Tempra 36 features Stiebel Eltrons true microprocessor-controlled temperature regulation with a convenient digital temperature display. A dial on the front of the unit allows you to set the output water temperature anywhere between 30°C and 60°C. The Tempra series of electric tankless water heaters are one of only a few tankless water heaters available today that feature a true thermostatic temperature and full power-modulation experience. Both the incoming water temperature and flow rate are monitored so that the unit always provides the temperature you have it set to with no fluctuations.

Like other Stiebel Eltron Tempra Plus units, the Tempra 36 features dynamic Advanced Flow Control technology. This allows the unit to automatically reduce the flow of water when the flow demand is exceeding the heater's capacity. This feature is particularly beneficial in cold climates such as Canada, or in applications where the electrical service does not permit the installation of a larger model. It is also recommended to purchase a Plus unit for any temperature critical applications such as commericial dishwashers if the flow rates are not predictable.

The Stiebel Eltron Tempra Plus Series electric tankless water heaters feature the most precise temperature control of any tankless water heater on the market today!

Maximum Flow Rate
in Gallons Per Minute
40°C (105°F) Output Temp
Incoming Water Temp: Flow Rate (GPM)
4°C (40°F) 3.8 GPM
7°C (45°F) 4.1 GPM
10°C (50°F) 4.5 GPM
13°C (55°F) 4.9 GPM
15°C (60°F) 5.4 GPM
18°C (65°F) 6.1 GPM
21°C (70°F) 7.0 GPM
24°C (75°F) 8.2 GPM
Stiebel Eltron Tempra 36 Specifications
Yes, digital temperature control and full power modulation based on flow rate and incoming water temperature.
Advanced Flow
Control Technology?
Yes, dynamic flow control technology automatically adjusts the flow of water when the unit's sensor's detect that the flow demand is exceeding the heater's capacity. This feature is exclusive to Stiebel Eltron Tempra Plus Series tankless water heaters!
Preset Temperature Memory Buttons: Yes
Flow Rate Monitor: Yes
Energy Monitor Showing Cost Savings: Yes
Hinged Case: Yes
KW 36 KW @ 240v / 27 KW @ 208v
Voltage: 208 - 240 volts / single phase / 50 - 60 Hz
Max. Amps: 150 AMPS @ 240v / 132 AMPS @ 208v
Breakers Required:*  3 x 50 AMP Breakers (240 volt, double pole)
Wiring:*  Minimum 3 x #8 AWG Copper (depends on local codes)
Dimensions: 16.6 x 14.5 x 4.6" (42 x 36.8 x 11.7 cm)
Weight: 17.6 lbs (8.6 KG)
Pipe Fittings:  3/4" NPT
Energy Efficiency: 99%+
Activation Flow Rate: 0.77 GPM / 2.9 LPM
Max. Water Pressure:    150 psi (tested to 300 psi)
Max. Output Temperature: 60C (140F)
Max. Input Temperature: 55C (131F)
Warranty: Manufacturer's 3 Year Warranty
Safety: ETL Listed (US & Canada) - meets all applicable standards, including ANSI/UL 499 (USA) and CSA-E335-1/3E-94 (Canada)
Protection: microprocessor-based thermostatic temperature control (flow rate and temperature modulating) with thermal hi-limit cut-out switch monitoring each heating module

* Breaker size and wire gauge must meet all applicable local, state, provincial, and national electrical codes for your area - these are only guidelines that will apply to most installations. Some codes require use of electrical sub-panel for installation, especially when heater is not mounted within line-of-sight of the main electrical panel. Wiring should be sized to maintain a voltage drop of less than 3% under load. Please consult your electrician for more details.

Selecting an Installation Location

The Stiebel Eltron Tempra 36 Plus electric tankless water heater can be installed in a wide variety of locations due to it's small size. It is important to note that there are a number of guidlines that you should follow in order to choose a safe and convenient installation location. For full installation instructions download the Stiebel Eltron Tempra Installation Guide.

  • In most cases it is easiest to install where your traditional tank was located
  • Install on a solid and secure surface
  • Install close to electrical panel
  • Install 24" from combustible materials
  • Do not install outdoors
  • Do not install in high humidity environments
  • Do not install in a location that is difficult to access
  • Do not install where there is a potential for the unit to freeze

Recommended Clearances

It is recommended to proivde a minimum of 5 inches clearance in all directions (except the back panel of course).

Product Requirements

Please note: The electrical requirements of this unit prohibit its installation in many homes. A minimum 300 AMP household electrical service is highly recommended. Only a small percentage of homes are equipped with a 300 AMP service. Please consult your electrician before ordering if you are unsure of your electrical capacity in your home, or consider another model selection.

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