Stiebel Eltron Tempra Series Electric Tankless Water Heater Models

The Stiebel Eltron Tempra Series of electric tankless water heaters provide an endless supply of hot water on demand to your whole house while saving you up to 50% off your water heating cost!

The Stiebel Eltron electric tankless water heater uses a sophisticated thermostatic temperature control that constantly monitors the incoming water flow water and temperature to modulate power to the heating elements to maintain a precise, user-set temperature. A convenient digital display and controls allow you to set the output temperature to your desired level (between 86 and 125F - 30 to 52C). Most competitor's tankless water heaters are not able to compensate for changes in water flow rate and temperature, making their units fluctuate when simultaneous water demands are run, when well pump pressures change, etc. This is because their systems operate either on a "full on / full off" basis or they have relatively crude power modulation technology.

You can purchase a Stiebel Eltron water heater with confidence! All Tempra models are manufactured in Germany at Stiebel Eltron's ISO-9001 certified factory. Knowbody knows electric tankless water heaters like Stiebel Eltron which has been manufacturing electric heaters since 1924!

Stiebel Eltron manufactures 6 different Tempra Series models. All models are essentially the same except for the maximum heating power. They differ only in the quantity and power rating of the heating modules. The most appropriate model for each application is generally a function of your incoming water temperature (where you live) and your water usage needs. Please use our model selector or use the technical specifications below to assist you in selecting the best tankless water heater model for your application. Stiebel Eltron tankless water heaters are designed to completely replace your conventional hot water tank. They can also be configured in parallel or in series with conventional tanks (or multiple tankless units in series) for certain extra high-volume or commercial applications.

Please see the important information listed at the bottom of this page about confirming your electrical service requirements before purchasing a tankless water heater.

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We will meet or beat any advertised price for Stiebel Eltron tankless water heaters on the Internet!
Please call our toll free customer service line at 1-866-376-2690 to order.

Stiebel Whole House Electric Tankless Water Heaters
	Tempra 36	Tempra 29	Tempra 24	Tempra 20	Tempra 15	Tempra 12
Application	Extreme North and/or Very High Flow Rates	Northern Regions or High Flow Rates	Northern USA or Higher Flow Rates	Southern USA / Moderate Flow Rates	Tropical / Point of Use
Temp Control	Full micro-processor-based thermostatic temperature control featuring digital temperature selector / display and full power modulation based on flow rate and incoming water temperature.
Power (KW's @ 240v)	36 KW	28.8 KW	24 KW	19.2 KW	14.4 KW	12 KW
Power (KW's @ 208v)	27 KW	21.6 KW	18 KW	14.4 KW	10.8 KW	9 KW
Max Temp Rise @ 1.5 GPM 240v (208v)	92F (92F)	92F (92F)	92F (82F)	88F (66F)	65F (49F)	54F (41F)
Max Temp Rise @ 2.25 GPM 240v (208v)	92F (82F)	87F (66F)	73F (54F)	58F (44F)	43F (37F)	36F (27F)
Max Temp Rise @ 3 GPM 240v (208v)	82F (61F)	66F (49F)	54F (41F)	44F (33F)	33F (25F)	27F (20F)
Max Temp Rise @ 4 GPM 240v (208v)	55F (41F)	44F (33F)	37F (27F)	29F (22F)	Not Recommended
Max Output Temperature	The maximum output temperature is a function of incoming water temperature and water flow rate. For residential applications, all units are factory pre-set to permit a temperature setting from 86F to 125F (30 to 52C). The temperature setting can be easily adjusted using the adjustment dial and digital temp display on the front of the heater.
Heating Modules	3 heating modules		2 heating modules
Dimensions	21.7" x 14.5" x 4.6" (55.2 x 36.7 x 11.6cm)		14.5" x 14.5" x 4.6" (37 x 36.7 x 11.6cm)
Weight	24 lbs (11kg)		18 lbs (8kg)
Energy Efficiency	99%+ energy efficient
Activation Flow Rate	0.87 GPM / 3.3 LPM		0.58 GPM / 2.2 LPM			0.29 GPM / 1.1 LPM
Pipe Fittings	3/4" NPT
Working Pressure	Max. Recommended Pressure = 150 psi (10 bar) - tested to 300 psi (20 bar). Maximum recommended input temperature 107F (42C).
Voltage Requirements	208 - 240 volts / single phase / 50 - 60 Hz
Max. Amps (@ 240 volts)	150 Amps	120 Amps	100 Amps	80 Amps	60 Amps	50 Amps
Max. Amps (@ 208 volts)	132 Amps	105 Amps	88 Amps	70 Amps	52 Amps	44 Amps
Breakers Recommended*	3 x 60 Amp	3 x 50 Amp	2 x 60 Amp	2 x 50 Amp	2 x 40 Amp	1 x 60 Amp
Minimum amps to home	300 Amps	200 Amps		125 Amps	100 Amps
Recommended Wiring* (AWG Copper)	3 x #6	3 x #8	2 x #6	2 x #8	2 x #8	1 x #6
Safety	ETL Listed (US) Independently tested to conform to ANSI / UL 499 safety standard
Price USA	US$699.00	US$669.00	US$519.00	US$499.00	US$479.00	US$349.00
	Stiebel Eltron Tempra 36 Tankless Water Heater	Stiebel Eltron Tempra 29 Tankless Water Heater	Stiebel Eltron Tempra 24 Tankless Water Heater	Stiebel Eltron Tempra 20 Tankless Water Heater	Stiebel Eltron Tempra 15 Tankless Water Heater	Stiebel Eltron Tempra 12 Tankless Water Heater

* 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.

All models of the Stiebel Eltron Tempra Series Tankless Water Heater are ETL Listed. This confirms that they have been independently tested by ETL to ensure they comply with ANSI/UL 499 and other applicable safety standards for electric heating appliances.

Stiebel Eltron is:

3 convenient ways to order: Secure online order form, by Fax (250) 374-2692, or by Phone:
Toll Free Customer Service 1-866-376-2690 Monday to Friday 8:00am to 5:00pm (Pacific)
If you require any assistance in selecting the most appropriate model of tankless water heater for your home, please call our Toll Free Customer Service Line at 1 - 866 - 376 - 2690! We would be pleased to assist you.

Important Pre-Purchase Information Prior to purchasing your Stiebel Eltron Tankless Water Heater, it is important that you ensure that your home has sufficient electrical capacity for the desired model, or that you have budgeted for any upgrades that might be necessary. Please note that all electrical tankless water heaters, regardless of the manufacturer's claim, are restricted in reality to approximately 3 gallons per minute of flow at any given time in cold winter climates. This is generally more than enough for residential applications, however, certain simultaneous water usages in the home at single or multiple outlets may exceed this capacity. Please bear this in mind when selecting a model or system for your home. See the chart on our Tankless Water Heater Model Selector page for maximum flow capabilities based on your climate and model selected. Electrical Requirements for Stiebel Eltron Tempra Series Tankless Water Heaters: Before purchasing a Stiebel Entron, or any other electric tankless water heater, please ensure that your home has sufficient electrical capacity for your desired model, or that you have taken note of any upgrades that may be required. Please see the following chart for electrical requirements: Model Recommended Breakers Maximum Amperage @ 240 V Maximum Amperage @ 208 V Recommended Household Electrical Service Recommended Minimum Wire Gauge Tempra 36 3 x 60 AMPS * 150 AMPS 132 AMPS 300 AMPS 3 x #6 AWG Copper * Tempra 29 3 x 50 AMPS * 120 AMPS 105 AMPS 200 AMPS 3 x #8 AWG Copper * Tempra 24 2 x 60 AMPS * 100 AMPS 88 AMPS 200 AMPS 2 x #6 AWG Copper * Tempra 20 2 x 50 AMPS * 80 AMPS 70 AMPS 125 AMPS 2 x #8 AWG Copper * Tempra 15 2 x 40 AMPS * 60 AMPS 52 AMPS 100 AMPS 2 x #8 AWG Copper * Tempra 12 1 x 60 AMPS * 50 AMPS 44 AMPS 100 AMPS 1 x #6 AWG Copper * * 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. The above specifications are only guidelines. If your home is already equipped with a large number of electrical appliances, you may require a larger electrical service than the one recommended above. Please consult an electrician before placing an order. If your home does not have the minimum household electrical service as specified for your desired model, you can still purchase a Stiebel Eltron tankless water heater, however, upgrades to your electrical service will likely be required. It is recommended that you consult your certified electrician for a quote, prior to purchasing. Please be aware that uninstalled units returned due to a home that has inadequate electrical service may subject to a re-stocking fee. Please see our POLICIES page for more details.