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, no matter the climate and weather conditions. While they are mostly installed indoors in the utility room, Stiebel Eltron Tempra models, with its sleek, modern and appealing look, are perfect for bathrooms, even kitchens.
Built as the electric and tankless heaters, they are designed for residential and light commercial water heating, usually at the point of service. Let's review its 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 the 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, while Tempra Plus 36 in homes with up to 4 bathrooms, but it all depends on the temperature of the groundwater 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, but the maximum number of elements is 3, engaged in stages for modulating power, such as in Tempra 36. The heater electronically controls the input of the heat transferred to the water.
Which one of the available Stiebel Eltron Tempra models you will choose, depends on the temperature of groundwater and the number of fixtures you are planning to use at the same time. To find out an average temperature of groundwater in North America, use this map.
Every Stiebel Eltron tankless water heater from 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 size, 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 | |
Wattage* | 12 | 14.4 | 19.2 | 24 | 28.8 | 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 Tempra series are ideal for heating water in small homes, condos, apartments, garage, and offices, for point-of-use or whole-house applications. When compared to the tank-type heaters, Tempra series offers better performance and greater energy efficiency since it does not have standby heat loss and 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.
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