Product Description
Electric tank type water heaters are subject to stand-by losses which amount to 15 - 20% of the kWH used. In addition, water in a tank has to be heated hotter than necessary to account for these stand-by losses.Changing to a tankless system like the Tempra® eliminates these problems and results in typical savings of at least 15 - 20% on the hot water portion of your electric bill.Flexible Water Heater Connectors are included FREE with every Stiebel Eltron Tempra model.When compared to gas type tankless water heaters, Stiebel Eltron Tempra 24, cost less and is less expensive to install, since it does not require venting parts.While gas type...
Technical Details
- Stiebel Eltron
- Tempra 24
- Electric Whole House Tankless Water Heaters
Customer Reviews
"Everything I Hoped For" 2010-04-13
By Robert K. Irwin (Hawaii)
This tankless heater was installed about a week ago. It works very well providing as much hot water as we want and as hot as we want it. We are a family of four with one shower/tub. We live in Hawaii so the starting water temperature is no doubt warmer than for many locales. For our needs, this power saving appliance is just about perfect!
"Perfect tankless water heater for townhome" 2010-01-04
By M. Mills (East Coast, USA)
We have a city townhome in North Carolina with five faucets, one shower, a dishwasher, and a washing machine -- all electric, no gas. Groundwater temperatures here range from 55-70°, with the extremes occurring in January/February and July/August, respectively. After researching the many available brands and models of electric tankless water heaters, we decided on the Stiebel Eltron Tempra 24 to replace our old 50-gallon tank. We've have had it for 6 months now with no problems whatsoever. It works great and more than meets our hot water needs for the entire condo. And it has actually saved us between $20-25 on each of our electric bills since it was installed, compared to what the tank heater was costing us.
According to the Stiebel Eltron website, the Tempra 20 model (not the 24) was the most appropriate for the size of our home, since we only have one full bath. But what if we had the laundry, dishwasher, and shower all going at once? This has never actually happened and likely never will; but we opted for the next-higher model, the 24, because it has more power. At 3 gallons per minute, the Tempra 24 can heat water 41° F above the ambient temperature; by contrast, at that flow rate, the Tempra 20 can heat only 33° F above ambient. Additionally, the 24 supposedly can heat two showers at once. Although we can't actually test this (again, just one full bath), we *have* had the washing machine running on hot at the same time the shower (2.5 gpm) was going at its normal setting and had absolutely no temperature problems or water flow shortages.
There's a specific flow rate required for the unit to activate: 0.58 gpm, which is easily achieved on most standard home faucets. Conveniently, the Tempra has an external dial that allows you to set the maximum temperature, which is displayed on a small digital panel. Like any tankless water heater, the faster the water flow, the less the unit is able to heat the water.
The Tempra 24 takes two dedicated 60-amp circuit breakers. We had to have a professional plumber and an electrician install the water heater and ensure that we had sufficient power supply. Our condo was built in the early 1980s, so we actually had to have the power supply upgraded from the nearest transformer to our entire building (!) and then upgrade our individual circuit box. (Apparently no one else in our building has upgraded their major utility appliances in the last 5 years, or the transformer work would have already been done, and we would have only needed to upgrade our circuit box. So, neighbors: you're welcome.) The electrical work actually ended up costing more than the water heater itself, but by that point we were already up to our knees in it (so to speak) and decided to see it out to the end. I'm glad we did, although it was a royal pain to deal with at the time.
Stiebel Eltron's website has a sizing guide as well as an electrical/technical guide for the Tempra models. I can't tell you how indispensable these guides were when we were deciding which unit to purchase. (Per Amazon's reviewing guidelines, I'm unable to link directly to them, but you can find them by going to Stiebel-Eltron-USA[dot]com > Products > Tempra & Tempra Plus > [scroll all the way down to the small "Resources" box] View Sizing Guide/View Technical Data.)
You may be wondering about the difference between the Tempra and the Tempra Plus. Based on the information on Stiebel Eltron's website, it appears that the Tempra Plus is most appropriate for commercial or industrial use, as it requires 2.2 gpm of water flow to activate.
It seems that most people who reviewed this unit on Amazon have had problems with it, and, unfortunately, those who have had positive experiences likely haven't been moved enough to write a review. I don't doubt the other reviewers' testimonials at all, and it's a shame that they received defective units. However, I felt compelled to let people know that there are consumers out there who bought this unit and have never had any problems with it. We couldn't be more pleased with ours.
If you're in the market for an electric tankless water heater, I encourage you to find additional consumer reviews on other websites to get a more accurate assessment of this product. Stiebel Eltron is one of the best tankless brands out there, and based on the research we did, the Tempra 24 was the best fit for us. I would recommend Stiebel Eltron as a brand and the Tempra 24 model without hesitation. Make sure you shop around for the best price (we didn't buy ours from Amazon) and get it from a retailer who offers insured shipping with signed delivery confirmation. Good luck!
** Update, May 21, 2010: Our Tempra 24 tankless is still working great. We've had it for nearly a year now, and it quickly and consistently heats our water and has not given us one single problem. I absolutely stand behind my earlier recommendation. Five stars.
"Beware of "Customer Service" if these go bad." 2009-12-12
By RR
I had a Tempra 36 that went bad and was replaced shortly before the 3yr warranty was over. (Two of the three heating elements went bad resulting in lukewarm water). It was replaced with the 'new and improved' Tempra 29 Plus. Of course, customer is responsible for the labor to remove old unit and install new one... Well after about two weeks of solid performance, the new unit gave out as well. Called Steibel Customer Service once again and was told some of the electronic boards that were shipped out were faulty. New shipment from Germany would be here any day now. It has now been over one month waiting for the replacement. When calling back Steibel Eltron repeats the 'any day now' line, yet cannot give an exact date or reason as to why it is taking so long. Very frustrating to have your family without hot water in the middle of winter. Buyer Beware.
"Malfunctioning after just 1 week of use!" 2009-09-18
By Hector Jose Ochoa
I installed the heater and worked fine to provide hot water to 3 showers simultaneous. But one week later, the "thermal cut-off" started to shout down the heater. I contacted the factory and they say is an electronic problem from production line. They will send me a new one, but the inconvenience and the lost of the cost of uninstalling and re installing makes me write this alert.
"BEWARE" 2009-01-08
By Robert D. Ston
e (Morton WA.)
I purchased a Tempra 24,As it is advertised for cold areas, and would be suffecient for a small home, with 2 baths.I have a 1400 SF home,with 2 baths and it will not supply hot water for 1 bath, let alone 2, and then it is luke warm.
