Stiebel Eltron TEMPRA 29 PLUS Pressure Balancing Electric Tankless Water Heater for 3 Bath Home with 4.90 GPM @ 40° Rise

Item #: BCI1153465
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Technical Specs

Installation Guide
Specification Sheet
Approved for Commercial Use Yes
Breaker Needs 50
Collection TEMPRA
Depth 4.63
Direct Vent No
Electronic Ignition Type Yes
Fuel Type Electric
Hardwired Yes
Height 21.75
Ignition Type Electronic
Indoor Installation Yes
Kilowatts 21.6, 28.8
Manifolding No
Minimum Flow Rate .87
Number of Breakers 3
Outdoor Installation No
Plug In No
Practical Flow Rate 3.3
Voltage 208, 240
Water Connection 3/4"
Water Pressure (Max) 150
Width 14.5
Wire Size 3x8 / 3x8 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 3 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.
  • Flow Control Throttle: Keeps a constant temperature no matter the load strains.
  • Tempra 29 vs. Tempra 29 Plus: The Tempra 29 Plus (this model) expands on the Tempra 29 (Discontinued) 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 older Tempra 29, the water temperature would drop. Since updated, when using the Tempra 29 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: 21.6/28.8 kW
  • Amperage: 105/120 A
  • Min Circuit Breaker Size: 3x50 / 3x50 A
  • Recommended Wire Size: 3x8 / 3x8 GA
  • Max Temp Inc @ 4.5 GPM: 33/44 degree
  • Working Pressure: 150 PSI
  • Water Connections: 3/4" NPT
  • Dimensions: 21-3/4" x 14-1/2" x 4-5/8"
  • Weight: 24.25 lbs

Performance Data

  • 4.9 Gpm @ 40°F Rise
  • 3.9 Gpm @ 50°F Rise
  • 3.3 Gpm @ 60°F Rise
  • 2.8 Gpm @ 70°F Rise
  • 2.4 Gpm @ 80°F Rise

Additional Stiebel Eltron Links


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


*Denotes a finish or option that has been discontinued

3 Questions from the Community

  • What is the difference between Stiebel Eltron TEMPRA 29 and TEMPRA 29 PLUS?

    A. The TEMPRA PLUS is a newer version of the previous TEMPRA series, with upgraded and refined technology and construction. It is meant to replace the previous models.

    61% of 23 people found this useful. Was this useful? yes (14) | no (9)
  • Are there tax credits available? What about any other kinds of savings?

    A. While tankless water heaters are extremely economical, the government does not consider them efficient. However, with the amount of energy saved overall by using a tankless unit as opposed to a tank unit, electricity bills should be seriously cut down.

    75% of 20 people found this useful. Was this useful? yes (15) | no (5)
  • what size unit would be needed for a two bath home with 2 adults and 2 children?

    A. The Stiebel Eltron TEMPRA 29 PLUS tankless is typically recommended two bath homes, but it is recommended that you contact Stiebel Eltron at 800-582-8423 to check the specifics of your home against the capacity of the unit.

    65% of 23 people found this useful. Was this useful? yes (15) | no (8)

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