Stiebel Eltron TEMPRA 20 PLUS Pressure Balancing Electric Tankless Water Heater for High Demand Single Bath Home with 3.00 GPM @ 40° Rise

Item #: BCI1020796
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Technical Specs

Amperage 70, 80
Approved for Commercial Use Yes
Breaker Needs 50
Collection TEMPRA
Depth 4.625
Electronic Ignition Type Yes
Fuel Type Electric
Hardwired Yes
Height 14.5
Kilowatts 14.4, 19.2
Maximum Flow Rate 3.2
Minimum Flow Rate .58
Number of Breakers 2
Outdoor Installation No
Plug In No
Product Weight 15.4
Voltage 208, 240
Water Connection 3/4"
Water Pressure (Max) 150
Width 16.625
Wire Size 2x8 Gauge

This product has additional required/recommended options. To configure, add to your cart.

  • Descaling Kit Recommended
  • Isolation Valve Recommended

Pressure Balancing Electric Tankless Water Heater for Single Bath Home


  • Unlimited Supply of Hot Water: Keeps heating water instantly as you require. The Tempra(tm) system completely replaces a conventional tank heater with no disruption to your comfort and hot water needs.
  • Saves Energy and Reduces Your Electric Bill: Electric tank type water heaters are subject to stand-by losses which amount to 15 - 20% of the kWH used. Changing to a tankless system results in savings of 15 - 20%.
  • Control Temperature Simply by Setting a Dial: Set the knob on the front cover and enjoy water temperatures between 86 degreeF (30 degreeC) and 125 degreeF (52 degreeC). Change the desired temperature at anytime. Advanced microprocessor technology ensures that the water temperature never deviates from the set point.
  • Sleek Design Saves Space: The Tempra(tm) takes up considerably less space than conventional tank type water tanks and saves valuable living space.
  • Proven Reliability: Stiebel Eltron has an enviable track record of engineering excellence and product quality. The three years parts warranty is unique in the industry. You can depend on the Tempra(tm) for many years to come.
  • Tempra 20 vs. Tempra 20 Plus: The Tempra 20 Plus (this model) expands on the Tempra 20 by adding a pressure balancing feature to the unit. Should a unit be hooked up to more than one application, for example, a shower and a kitchen faucet, the demand for hot water may occasionally exceed the capabilities of the tankless water heater. Should this occur when using the Tempra 20, the water temperature will go down. Should this occur when using the Tempra 20 Plus, the unit will properly lower the cold water pressure to compensate for the demand, resulting in a total drop in water pressure at the shower and kitchen sink faucet, but temperature remains constant.


  • Voltage: 208/240
  • Wattage: 14.4/19.2 kW
  • Amperage: 70/80 A
  • Min Circuit Breaker Size: 2x50 / 2x50 A
  • Recommended Wire Size: 2x8 / 2x8 GA
  • Max Temp Inc @ 3.0 GPM: 33/44 degree
  • Working Pressure: 150 PSI
  • Water Connections: 3/4" NPT
  • Dimensions: 14-9/16" x 14-1/2" x 4-5/8"
  • Weight: 21 lbs

Additional Stiebel Eltron Links


This product is listed under the following manufacturer number(s):


*Denotes a finish or option that has been discontinued

4 Questions from the Community

  • will your tankless units support water input from a solar water heater?

    A. The Stiebel Eltron TEMPRA 20 PLUS will work with virtually any input water temperature. If you want to pre-heat the incoming water, this will only increase the effectiveness of the unit, allowing hotter water temperatures at output.

    67% of 6 people found this useful. Was this useful? yes (4) | no (2)
  • Can this be operated om a 100 amp service?

    A. Yes as long as you have room to install a two pole 50 amp breaker. Please consult local codes for the for compliance in your area.

    56% of 9 people found this useful. Was this useful? yes (5) | no (4)
  • my cottage is 16x30 ft long with one kitchen sink, one shower and one sink in the bathroom, would one unit heat enough water for one person

    A. That would be cutting it close. I'm not 100% sure if one would work for you. I don't think it would.

    30% of 10 people found this useful. Was this useful? yes (3) | no (7)
  • My cabin is 16x24 with a 10x12 bathroom added on. 1 kitchen sink and shower/tub and bath sink, washer. Two people. Is a 24 plus recommended and would 100 amp service be adequate?

    A. The Stiebel Eltron TEMPRA 20 PLUS is for a 1 bedroom home.

    38% of 8 people found this useful. Was this useful? yes (3) | no (5)
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