Find out how the best-selling Stiebel Eltron tankless water heater – Tempra, easily beats its competitors offering the most advanced features for water heating.
Tempra water heaters from this well-respected German company are built small but powerful enough to heat and deliver hot water, not only to a single fixture but multiple applications, and no matter of the climate and weather conditions.
While large tank-type models are mostly installed indoors in the utility room, Stiebel Eltron Tempra models, with their sleek, modern, and appealing look, are best suited for bathrooms, even kitchens.
Built as electric and tankless, Tempra heaters are designed for residential and light commercial water heating, usually at the point of service.
Let's review the main features, benefits, and user's pros and cons.
Stiebel Eltron is a German company that designs and manufactures products for heating, which includes electric tankless water heaters and heat pumps. The group, which includes on-demand models, is especially interesting, where the series Tempra is the best-selling and most popular tankless model.
This review is about Stiebel Eltron Tempra, a group of small and wall-mounted electric and tankless heaters, with power ranging from 12 to 36 kW and providing enough hot water to point-of-use and whole-house applications.
There are two types of Tempra heaters: Tempra Trend and Tempra Plus.
They look almost the same, but the Tempra Plus is more advanced; it has features such as the Advanced Flow Control, preset temperature memory buttons, and energy monitor showing cost savings.
Tempra water heaters can be found in the following sizes: 12, 15, 20, 24, 29, and 36 kW. Models from 12 to 20 kW are mainly used in one-bath homes; Tempra 24 might be used in homes with 2 to 3 baths. In contrast, Tempra Plus 36 is recommended for homes with up to 4 bathrooms, but it all depends on the groundwater temperature and is the heater installed in homes located in the warm or cold climate (region).
Also, based on the number of heating elements, one heater has more or less power. Still, the maximum number of elements is 3, engaged in stages for modulating power, such as in a Tempra 36 model. The heater electronically controls the input of the heat transferred to the water.
One of the available Stiebel Eltron Tempra models you can choose depends on the temperature of groundwater and the number of fixtures you are planning to use simultaneously. To find out the average temperature of groundwater in North America, use this map.
Every Stiebel Eltron tankless water heater from the Tempra series was designed to provide an unlimited supply of hot water, on-demand and where it is needed. The tankless technology and the absence of the storage tank allow small and compact sizes, delivering hot water continuously with higher efficiency and less waste.
Tempra comes with the following features:
|Tempra 12||Tempra 15||Tempra 20||Tempra 24||Tempra 29||Tempra 36|
|Maximum water flow (GPM) (@52 F temperature rise)||1.6||1.9||2.5||3.1||3.7||4.5|
|# of fixtures||1||1||1||2||3||3|
|Recommended breaker size||1x50||2x30||2x40||2x50||3x40||3x50|
Stiebel Eltron Tempra Plus 24 is one of the most popular and top-selling models. Here is the summary of user's pros and cons found on several websites:
Stiebel Eltron tankless water heaters from the Tempra series are ideal for heating water in small homes, condos, apartments, garages, and offices, for point-of-use or whole-house applications.
Compared to the tank-type heaters, the Tempra series offers better performance and greater energy efficiency since it does not have standby heat loss due to shorter pipes. Cold water is heated on-demand only and delivered continuously in endless supply. The small and lightweight design allows easy and fast installation, inside the cabinet or on the wall, without occupying any floor space.