Stiebel Eltron Tempra 12 Plus Copper Tankless Electric Water Heater with Advanced Flow Control 240/208V, 12 kW, 239219

Stiebel Eltron Tempra 12 Plus Copper Tankless Electric Water Heater with Advanced Flow Control 240/208V, 12 kW, 239219, 040232668586

While every Stiebel Eltron model delivers superior performance, the Tempra Plus series represents the industry’s high-point of tankless water heater innovation. Manufactured by Stiebel Eltron, a pioneer and leader in tankless water heating technology for over 90 years, the Tempra Plus line features our unique Advanced Flow Control function, which ensures that you’ll never be surprised by a cold shower. It also features two different temperature memory presets, making it easy to adjust for personalized needs. Thanks to these and other innovations, the Tempra Plus ensures that you’ll enjoy endless hot water along with unrivaled efficiency.

Stiebel Eltron invented Advanced Flow Control, and our tankless water heaters have had a version of it since 1970. Awarded German patent DE 3805441 C2, among others, we have continually improved this technology for almost 50 years.

Advanced Flow Control is a standard feature in our Tempra Plus models. If the demand asked of a Tempra Plus is greater than the water heater can handle, Advanced Flow Control works by automatically reducing the flow of water slightly. Unlike water heaters from other manufacturers that can deliver colder water than desired, a Tempra Plus automatically delivers slightly less water, but at the hot water temperature wanted. There is never a cold water surprise with a Tempra Plus!

Advanced Flow Control is exclusive to our Tempra Plus models. No other manufacturer of tankless electric water heaters has anything like it. Every Tempra also has self-modulation. Self-modulation is sometimes confused with flow control, but it has more to do with the amount of energy used to heat the water. Self-modulation, sometimes call auto-modulation, ensures that only the least amount of energy is used at all times. Every Tempra model continually monitors incoming water temperature, the flow rate of water through the heater, and the water temperature it produces. These sensors feed their readings into the unit’s proprietary microprocessor control which engages the heating elements in stages, as efficiently as possible, to achieve the water temperature set on the front panel, always using the least amount of energy necessary to heat the water.

While only Tempra Plus has Advanced Flow Control, every Tempra has smart microprocessor technology and several temperature and flow sensors. This technology ensures a steady output temperature even if flow rates vary up or down, like when hot water is being used and an additional tap is opened or closed. Tankless electric water heaters from other manufacturers don’t maintain a steady temperature if the flow varies. A Tempra always does. Our exclusive Electronic Temperature Control allows setting the knob on the front cover to the water temperature desired and getting that temperature every time, and all the time, hot water is needed.

A Stiebel Eltron Tempra responds directly to your demand for hot water without interruption. Showers will always be hot, even if there are several taken in a row and they run long. A tank water heater may be able to deliver more water all at once, but once the tank starts to deplete things get cold and pretty quickly come to a standstill while waiting for the tank to recover. Because a Tempra is a tankless water heating system, it is not subject to seismic building code. There is no need for the preventative construction required with a tank water heater. Tempra Plus tankless water heaters can be set to limit the maximum hot water temperature to 109°F. This can be important in some installations to prevent the possibility of scalding.

We have done our homework. As an international leader in the tankless electric water heating industry, Stiebel Eltron is proud to have pioneered this technology. The company's German engineering and manufacturing tradition of excellence means that you can depend on its performance for many years to come.

• Proven reliability from the world leader
• Unlimited supply of hot water
• Sleek design saves space
• No venting required
• 7/3-year warranty
• Tempra Plus features exclusive Advanced Flow Control, invented by Stiebel Eltron and awarded German patent DE 3805441 C2 and other patents