E-Tankless Electric Tankless Water Heaters

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 Tempra and Tempra Plus electric tankless water heaters 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. Convenient controls allow you to set the output temperature to your desired level (between 86 and 140F (30 to 50C) [Note, maximum temperature setting on some models is 125F (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.

Tempra Plus series models take temperature control to another level, offering the industry's only Advanced Flow Control technology. This 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 particularly useful in cold climates and other applications where the electrical service size does not permit the installation of a larger model where it may be desirable to handle occasional high flow demands. It is also desirable where high output temperatures are required for temperature-critical applications (commercial dishwashers, etc.) where flow rates are not always predictable.

Stiebel Eltron manufactures Tempra and Tempra Plus Series models, for almost every conceivable water heating application. All Tempra Series models are essentially the same except for the maximum heating power. Similarly, all Tempra Plus Series models are essentially the same at each other except for their power rating. They differ only in the quantity and power rating of the heating modules.

The following chart highlights the key differences between the current Tempra Series models....

	Tempra Plus Series	Tempra Series
Full micro-processor-based thermostatic temperature control featuring full power modulation based on flow rate and incoming water temperature.	Yes	Yes
Dynamic Advanced Flow Control Technology - adjusts the flow of water when the unit's sensor's detect that the flow demand is exceeding the heater's capacity.	Yes	No
Digital Temperature Selector	Yes, all models	No
Hinged Case	Yes	Yes
Power Levels Available (KW @ 240V)	36, 28.8, 24, 19.2, 14.4, 12	24, 19.2, 14.4, 12

The most appropriate model for each application is generally a function of your incoming water temperature (where you live) and your water usage needs and what features you desire. 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.

You can purchase a Stiebel Eltron water heater with confidence! All Tempra and Tempra Plus models are manufactured in Germany at Stiebel Eltron's ISO-9001 certified factory. Nobody knows electric tankless water heaters like Stiebel Eltron which has been manufacturing electric heaters since 1924!

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

Lowest Price Guarantee
At E-Tankless.com, we take great pride in offering the very best products and prices to our customers.
We will meet or beat any advertised price for Stiebel Eltron tankless water heaters on the Internet and all of our prices for the Tempra Series and Tempra Plus Series now include ground shipping at no extra charge!
Please call our toll free customer service line at 1-866-376-2690 to order.

Stiebel Tempra Plus Series Whole House Electric Tankless Water Heaters
	Tempra 36 Plus	Tempra 29 Plus	Tempra 24 Plus	Tempra 20 Plus	Tempra 15 Plus	Tempra 12 Plus
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. Dynamic Advanced Flow Control Technology - adjusts the flow of water when the unit's sensor's detect that the flow demand is exceeding the heater's capacity.
Digital Temp. Setting Display	Yes
Hinged Case	Yes
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**	140F (60C)
Heating Modules	3 heating modules		2 heating modules			1 heating module
Dimensions	16.6" x 14.5" x 4.6" (55.2 x 36.7 x 11.6cm)
Weight	17.6 lbs (8.6kg)		15.4 lbs (7.3kg)			13.2 lbs (6.1kg)
Energy Efficiency	99%+ energy efficient
Activation Flow Rate	0.87 GPM / 3.3 LPM		0.58 GPM / 2.2 LPM			0.37 GPM / 1.4 LPM
Pipe Fittings	3/4" NPT
Working Pressure	Max. Recommended Pressure = 150 psi (10 bar) - tested to 300 psi (20 bar).
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
Maximum recommended input temperature:	131F (55C)
Safety	ETL Listed (US & Canada) Independently tested to conform all applicable safety standards including ANSI/UL 499 (USA) and CSA-E335-1/3E-94 (Canada)
Price USA	US$849 shipping included	US$799 shipping included	US$765 shipping included	US$729 shipping included	US$695 shipping included	US$519 shipping included
Price Canada Why the price difference?	CDN$1,079 shipping included	CDN$899 shipping included	CDN$869 shipping included	CDN$829 shipping included	CDN$789 shipping included	CDN$589 shipping included
	Stiebel Eltron Tempra 36 Plus Tankless Water Heater	Stiebel Eltron Tempra 29 Plus Tankless Water Heater	Stiebel Eltron Tempra 24 Plus Tankless Water Heater	Stiebel Eltron Tempra 20 Plus Tankless Water Heater	Stiebel Eltron Tempra 15 Plus Tankless Water Heater	Stiebel Eltron Tempra 12 Plus Tankless Water Heater

Stiebel Tempra Series Whole House Electric Tankless Water Heaters
	Tempra 24	Tempra 20	Tempra 15	Tempra 12
Application	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 full power modulation based on flow rate and incoming water temperature.
Digital Temp. Setting Display	No
Hinged Case	Yes
Power (KW's @ 240v)	24 KW	19.2 KW	14.4 KW	12 KW
Power (KW's @ 208v)	18 KW	14.4 KW	10.8 KW	9 KW
Max Temp Rise @ 1.5 GPM 240v (208v)	92F (82F)	88F (66F)	65F (49F)	54F (41F)
Max Temp Rise @ 2.25 GPM 240v (208v)	73F (54F)	58F (44F)	43F (37F)	36F (27F)
Max Temp Rise @ 3 GPM 240v (208v)	54F (41F)	44F (33F)	33F (25F)	27F (20F)
Max Temp Rise @ 4 GPM 240v (208v)	37F (27F)	29F (22F)	Not Recommended
Max Output Temperature**	140F (60C)		125F (52C)	140F (60C)
Heating Modules	2 heating modules			1 heating module
Dimensions	16.6" x 14.5" x 4.6" (42 x 36.8 x 11.7cm)			16.6" x 14.5" x 4.6" (42 x 36.8 x 11.7cm)
Weight	15.4 lbs (7.3kg)			13.2 lbs (6.1kg)
Energy Efficiency	99%+ energy efficient
Activation Flow Rate	0.58 GPM / 2.2 LPM			0.37 GPM / 1.4 LPM
Pipe Fittings	3/4" NPT
Working Pressure	Max. Recommended Pressure = 150 psi (10 bar) - tested to 300 psi (20 bar)
Voltage Requirements	208 - 240 volts / single phase / 50 - 60 Hz
Max. Amps (@ 240 volts)	100 Amps	80 Amps	60 Amps	50 Amps
Max. Amps (@ 208 volts)	88 Amps	70 Amps	52 Amps	44 Amps
Breakers Recommended*	2 x 60 Amp	2 x 50 Amp	2 x 40 Amp	1 x 60 Amp
Minimum amps to home	200 Amps	125 Amps	100 Amps
Recommended Wiring* (AWG Copper)	2 x #6	2 x #8	2 x #8	1 x #6
Safety	ETL Listed (US & Canada) Independently tested to conform all applicable safety standards including ANSI/UL 499 (USA) and CSA-E335-1/3E-94 (Canada)
Maximum recommended input temperature:	131F (55C)	107F (42C)	107F (42C)	107F (42C)
Price USA	US$659 shipping included	US$625 shipping included	US$589 shipping included	US$435 shipping included
Price Canada Why the price difference?	CDN$749 shipping included	CDN$699 shipping included	CDN$669 shipping included	CDN$499 shipping included
	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.

** 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 (30C) to either 125F or 140F (52 to 60C). The temperature setting can be easily adjusted using the adjustment dial on the front of the heater.

All models of the Stiebel Eltron Tempra Series Tankless Water Heater are ETL Listed in the USA and Canada. This confirms that they have been independently tested by
ETL to ensure they comply with all applicable safety standards, including ANSI/UL 499 (USA) and
CSA-E335-1/3E-94 (Canada).

Stiebel Eltron is:
Stiebel Eltron is ISO-9001 Certified

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 Breaker	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 / 29 Plus	3 x 50 AMPS *	120 AMPS	105 AMPS	200 AMPS	3 x #8 AWG Copper *
Tempra 24 / 24 Plus	2 x 60 AMPS *	100 AMPS	88 AMPS	200 AMPS	2 x #6 AWG Copper *
Tempra 20 / 20 Plus	2 x 50 AMPS *	80 AMPS	70 AMPS	125 AMPS	2 x #8 AWG Copper *
Tempra 15 / 15 Plus	2 x 40 AMPS *	60 AMPS	52 AMPS	100 AMPS	2 x #8 AWG Copper *
Tempra 12 / 12 Plus	1 x 60 AMPS *	50 AMPS	44 AMPS	100 AMPS	1 x #6 AWG Copper *

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.