Stiebel Eltron Tempra 20 19.2 kW Whole House Tankless Electric Water Heater-Tempra 20 at The Home Depot
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Stiebel Eltron

Model # Tempra 20

Internet # 203210871

Tempra 20 19.2 kW Whole House Tankless Electric Water Heater

Stiebel Eltron Tempra 20 19.2 kW Whole House Tankless Electric Water Heater

This item has been discontinued.
The Home Depot no longer carries this specific product.

$599.99 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


In Stock



Model # Tempra 20

Internet # 203210871

Stiebel Eltron developed tankless electric water heating technology 90 years ago and continues as the industry pioneer and world leader. Our engineering and manufacturing tradition of excellence means you can depend on the performance and reliability of our products. Our Tempra models are whole house tankless electric water heaters, never wasting energy storing hot water, but delivering it as you need it, for as long as you need it. The compact design needs no venting, allowing installation close to your draw off points, making your wait for hot water as short as possible and maximizing your energy savings. Tempra tankless water heaters are sized based on the number of bathrooms and your climate. Refer to the Tempra Sizing Guide under 'More Views' to determine which model you need. Call Stiebel Eltron at 800.582.8423 if you have high flow showers, or any sizing questions. Tempra water heaters supply water at a constant temperature from 86 to 140 degrees F that is settable on the front panel. We recommend setting the actual highest temperature you use, typically 107 degrees for a shower. Tempra Plus models incorporate an Advanced Flow Control that automatically reduces flow to deliver water at the set point if demand exceeds capacity. Regular Tempra models do not have this feature and should be considered if this is not of concern. Tempra 20 models provide hot water for 1 or 2 bathrooms in warm climates, or 1 bathroom in cool climates.

  • Professional installation recommended
  • Tempra 20 models require 208 or 240 volt electric service, with a maximum draw of 14,400 watts at 208 volts or 19,200 watts at 240 volts
  • A minimum of 200 amp total service to the residence is necessary, with 2 separate 50 amp breakers and 8 gauge copper wiring for the Tempra 20
  • Tempra tankless electric water heaters are 99% efficient and typically result in savings of 15-20% in comparison with electric tank-type water heaters
  • Tempras use only the amount of energy necessary to heat the water needed
  • The sleek European design is considerably smaller than a tank, saving space and allowing flexibility to determine the best location for installation
  • Tempra units must be installed vertically with the water fittings pointing down
  • Tempra tankless water heaters work better than tank-type water heaters in hard water environments because they can be set to lower temperatures, which minimizes scale formation
  • Water connections for Tempra water heaters must be detachable (such as braided steel flex connectors) to allow periodic filter cleaning, including flushing for scale if hard water is present
  • Tempra tankless water heaters are ETL Listed for compliance with CSA and UL safety standards in the US and Canada
  • Tempra tankless electric water heaters are exempt from seismic code
  • Overheat safety protection and thermal protection reset are standard
  • See warranty for complete details of the 3-year residential and commercial warranty against defects in workmanship and materials under normal use
  • Stiebel Tempra Sizing Guide:

    Stiebel Tempra Sizing Guide

Info & Guides

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Amperage (amps)  80  Assembled Depth (in.)  4.625 in 
Assembled Height (in.)  14.5 in  Assembled Width (in.)  16.625 in 
Certifications and Listings  4-UL Certified,CSA Listed,ETL Listed  ENERGY STAR Certified  No 
Electric Product Type  Commercial & Residential  Finish Family  Gray 
Flow Rate @ 35 F Rise (gallons/min)  3.75 gal (US)/min  Flow Rate @ 45 F Rise (gallons/min)  2.91 gal (US)/min 
Fuel Type  Electric  Indoor/Outdoor  Indoor 
Labor Warranty  No Warranty  Maximum Temperature (F)  140 
Minimum Activation Rate (gpm)  0.58  Minimum Temperature (F)  86 
Part Warranty  3 Year  Point-Of-Use  No 
Product Depth (in.)  4.625  Product Height (in.)  14.5 
Product Weight (lb.)  15.4 lb  Product Width (in.)  16.625 
Residential/Commercial/industrial Use  Residential, commercial or industrial  Returnable  90-Day 
Water Connection Location  Bottom  Water Connection Size (in.)  3/4” NPT 
Water Heater Features  Overheat Protection  Wattage (watts)  19200 


Rated 4 out of 5 by 6 reviewers.
Rated 5 out of 5 by Hard to believe I was cramped for space in my utility/laundry room. I removed my old gas hot water tank that was 15 years old and due for replacement. I had explored my options. Home Depot. com always had the answer and many choices. Easy install with the proper pex, and electrical tools (knowledge in these fields is a MUST). The Origin, Made in Germany says it all. They have been making energy saving products for nearly 90 years. Great Product!!!! March 20, 2012
Rated 5 out of 5 by Easy to install Started it up today. Very easy to install. The plumbing connections were easy. An electrician did the required upgrades for the power (from the lesser requirements for the tank heater we had). Easy to use and set. April 18, 2012
Rated 5 out of 5 by The system has been installed for one month and works great The Temperature control is excellent it provides the ability to adjust the temperature within a few degrees September 4, 2012
Rated 2 out of 5 by Good for small water consumption, not a whole house heater I purchased Tempra20 a couple of years ago and I have had a problem figure it out how to adjust the water flow to a comfortable level. During the summer hot days there not much of the problem since the water temperature difference is not great, during the winter cold days and nights the unit is definitelly not a whole house unit. The water connection is 3/4" and when you open the bathroom faucet the unit is struggling to deliver hot water. I reduced the water temp to 44 deg.C and turned the outlet valve down until the blinking light stopped to blink. The water coming out of the faucet was so low that is less than a gallon per minute. This is not a whole house unit, it is good maybe for a kitchen sink, but not for a bathroom. Advantage is a small wall mounted unit, saves a lot of space, but performance not as advertised. December 31, 2012
Rated 3 out of 5 by What was expected... Pretty simple to install, and easy to adjust settings. Sometimes the water temperature changes if two or more sources are in operation (ex. washer & shower, or sink). February 1, 2013
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