Stiebel Eltron Tempra 24 Plus Review


Stiebel Eltron Tempra 24 Plus is truly a next-gen unit because technologically it is way ahead from all the other commonly available tankless water heaters. Stiebel has completely been revised and upgraded its Tempra series to meet the requirements of modern day techno-savvy consumers. Tempra plus range is now equipped with heavy-duty components and energy-saving yet steady heating mechanism, which lets you save at least 20% of your electricity bill. The product features:
  • Digital temperature control system
  • User-friendly single flow sensor design,
  • Compact and Sleek outlook makes it easy to be fitted just about anywhere
  • Hinged cover for ensuring easy access
  • Highly advanced flow control system
  • Reliable and durable product

Users can easily adjust hot water temperature with their fingertips through the dial. In comparison to gas heaters, Tempra 24 Plus is less expensive yet high on quality and performance. Tempra® Plus’s Advanced Flow Control technology maintains even hot water supply regardless of the frequency of use and thus, eliminates temperature fluctuation. The product weighs 20pound and comes with a three year parts warranty. You can expect a thoroughly satisfying hot water bath when Tempra 24 Plus is doing the job.Enter your text here...

The Pros & Cons of the Stiebel Eltron Tempra 24 Plus


  • Highly efficient water heater for the entire family because it offers unlimited hot water supply
  • Compact size and light weight makes it feasible for small-sized homes and apartments
  • Reduces monthly electricity bill to up to 20%
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    Temperature adjustment is very easy and simple
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    Installation is inexpensive and stress-free. The product comes with a step-by-step guide to help users install it without any outside help.
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    Supplies hot water to two showers simultaneously
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    Steady temperature and consistent hot water supply eradicates heating fluctuations and ensures relaxing bathing experience in all seasons
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    The unit contains a comprehensive digital temperature read out so that users can easily understand the temperature that they are getting


  • Installation wise the electrical set-up is trickier whereas the plumbing requirements are simpler
  • The heater can be installed by users but minor mistake can result in power supply fluctuations and uneven hot water supply. Therefore, professional help is mandatory and it can be expensive.
  • To ensure constant water temperature you need to maintain high flow of water and if water flow is low then pressure will minimize and temperature fluctuations can occur.
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    Although the unit has been designed to provide consistent hot water supply to two showers at a time but the probability of temperature fluctuations cannot be overlooked and cold sandwich effect can hit you occasionally.

Installation and Specifications

Tempra 24 Plus can be installed easily and very economically because it does not require to be vented from the outside like conventional gas tankless heaters. You can either get it installed from a professional or adopt a DIY approach. The unit comes with an instruction manual and manufacturer’s guidelines about the required wiring and other components. To install the unit, you need to buy 6 wire gages because wiring has to be double fused and run twice from the panel box. Two 60amp circuit breakers are required to be installed with 6gage wiring in order to pull 115AMP. For plumbing, you should buy steel braid hoses and to connect input and output hoses buy flexible connectors. Initially set the temperature at 109degrees as per the manufacturer’s recommendation and wait for 10-15 seconds so that water starts heating.


Assembled Depth4.625"
Assembled Height14.5"
Assembled Width16.625"
Product Depth4.625"
Product Height14.5"
Product Width16.625"
Water Connection Size3/4" NPT
Amperage (amps)100
Electric Product TypeCommercial & Residential
Finish FamilyGray
Flow Rate @ 35 F Rise (gallons/min)4.68 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)3.64 gal
Fuel TypeElectric
Maximum Temperature (F)140
Minimum Activation Rate (gpm)0.58
Minimum Temperature (F)86
Product Weight (lb.)15.4 lb
Residential/Commercial/industrial UseResidential, commercial or industrial
ModelTempra 24 Plus
Water Connection LocationBottom
Water Heater FeaturesOverheat Protection
Wattage (watts)24000

Common Problems

Tempra 24 is no doubt an extremely efficient, energy saving and affordable option especially if you don’t have too much available space. It does the job fairly well in comparison to other tankless electric water heaters. The only problem that it has is of high installation cost and intricacy of its electrical wiring. The installation cost can be high if you are not well-informed about technicalities of electrical wiring. Moreover, the unit’s design sometimes hampers its efficiency.


The Stiebel Tempra 24 is an excellent tankless water heater. It does its job, and does it well, and is an improvement over several other Stiebel products. That being said, the flaw in its design does hamper its efficiency somewhat, and the high installation costs must be taken into consideration whilst deciding whether or not to purchase this product.

You can buy the Stiebel Eltron Tempra 24 Plus on Amazon.

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