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Stiebel Eltron Tankless Water Heater – Tempra 15 Plus – Electric, On Demand Hot Water, Eco, White

4.5 4.5 out of 5 stars 1,880 ratings

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Tempra 15 Plus (15 kW)
Water Heater

Purchase options and add-ons

Brand Stiebel Eltron
Product Dimensions 16.63"W x 14.5"H
Special Feature LED Display
Color White
Wattage 14.4 KW
Power Source
Hard Wiring Required
Material
Copper
Item Weight
1 Pounds
Style
Tempra 15 Plus (15 kW)

About this item

  • CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
  • SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
  • EASY OPERATION – Electronic switch activates the hot water heater and it’s noise free while in use. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work
  • TEMPRA 15 PLUS – This specific model is 14.4kW, 240V, requires a min recommended electric service of 100 A, and offers an output water temperature of 68° to 140°F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels
  • WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase
See more product details

Customer ratings by feature

Energy efficiency
4.5 4.5
Easy to install
4.5 4.5
Temperature Control
4.4 4.4
Tech Support
4.2 4.2

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$634.26
Get it as soon as Friday, Mar 29
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Stiebel Eltron Tankless Water Heater – Tempra 15 Plus – Electric, On Demand Hot Water, Eco, White
Stiebel Eltron Tankless Water Heater – Tempra 15 Plus – Electric, On Demand Hot Water, Eco, White
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Price$634.26-7% $335.00
List:$359.00
$469.99$299.99$299.99$799.00
Delivery
Get it as soon as Friday, Mar 29
Get it as soon as Friday, Mar 29
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Customer Ratings
Energy efficiency
4.5
4.8
4.0
3.8
4.6
4.5
Temperature Control
4.4
4.9
4.0
3.9
4.4
4.4
Tech Support
4.2
4.8
3.8
3.5
4.1
4.2
Easy to install
4.5
4.0
3.9
4.4
4.5
Value for money
3.9
3.6
4.3
Sold By
Amazon.com
Amazon.com
THMOS
Sain Store
ECOTOUCH
Amazon.com
capacity
240 gallons
18 kilowatts
0.39 gallons
power source
Hard Wiring Required
Hard Wiring Required
208~240V Hardwire
AC
240V/60Hz hardwire
Hard Wiring Required
mounting type
Wall
Wall
Wall
max operate pressure
150 pounds per square inch
150 pounds per square inch
150 pounds per square inch
material
Copper
lead free
Metal, Aluminum, Brass
Copper
style
Tempra 15 Plus (15 kW)
Plus
27kW
Indoor Installation
‎Digital
Tempra 29 Plus (29 kW)

From the manufacturer

Stiebel Eltron - Simply the Best since 1924
Self-modulating energy technology & Advanced Flow Control for more comfort using less electricity
Tempra 12 | Tempra 12 Plus Tempra 15 | Tempra 15 Plus Tempra 20 | Tempra 20 Plus Tempra 24 | Tempra 24 Plus Tempra 29 | Tempra 29 Plus Tempra 36 | Tempra 36 Plus
Tempra 12 Trend | Tempra 12 Plus Tempra 15 Trend | Tempra 15 Plus Tempra 20 Trend | Tempra 20 Plus Tempra 24 Trend | Tempra 24 Plus Tempra 29 Trend | Tempra 29 Plus Tempra 36 Trend | Tempra 36 Plus
Customer Reviews
4.4 out of 5 stars
801
4.4 out of 5 stars
801
4.4 out of 5 stars
801
4.4 out of 5 stars
801
4.4 out of 5 stars
801
4.4 out of 5 stars
801
kW 12 kW 14.4 kW 19.2 kW 24 kW 28.8 kW 36 kW
Voltage 208 V 208 V 208 V 208 V 208 V 240 A
Max. amperage draw 50 A 60 A 80 A 100 A 120 A 150 A
Min. required breaker(s) 1 x 50 A DP 2 x 30 A DP 2 x 40 A DP 2 x 50 A DP 3 x 40 A DP 3 x 50 A DP
Min. required wire size and number of runs 1 x 6/2 AWG 2 x 10/2 AWG 2 x 8/2 AWG 2 x 6/2 AWG 3 x 8/2 AWG 3 x 6/2 AWG
Min. recommended household electric service 100 A 100 A 125 A 150 A 200 A 300 A
Min. flow to activate unit 0.37 GPM 0.50 GPM 0.50 GPM 0.50 GPM 0.77 GPM 0.77 GPM
Water connections 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT
Output water temp. range 86°F - 140°F 86°F - 140°F 86°F - 140°F 86°F - 140°F 86°F - 140°F 86°F - 140°F

1

2

3

1 Find your approximate ground water temperature on the map.

2 Check the column on the table to see how many fixtures can be supplied at the same time for each model.

3 Use the actual max. flow rate to fine-tune these recommendations.

4 Make sure you have sufficient electrical service for the model.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Stiebel Eltron Tankless Water Heater – Tempra 15 Plus – Electric, On Demand Hot Water, Eco, White


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Product guides and documents

Product Description

"The Stiebel Eltron Tempra 15 Plus Tankless Water Heater features exclusive Advanced Flow Control German patented technology invented by Stiebel Eltron to automatically maintain water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity to ensure that hot showers will never be interrupted. Tempra 15 Plus will typically use 15-20% less energy compared to conventional electric tank water heaters. Although, it’s possible to save significantly more energy depending on personal home usage habits. The difference is that conventional tank water heaters continually store hot water, and as a result, lose 15%-20% of the total energy consumed to the environment around them. This is called standby heat loss. Tank water heaters that use gas or oil are even less efficient, because they also lose heat through their vents to the outdoors. Our tankless water heaters do not need venting, and will not store hot water, waiting for you to use it. They operate on-demand to provide continuous and endless hot water when you need it, and not waste energy when you don’t. CERTIFICATIONS INCLUDE - ANSI/UL Std. 499, CSA Std. C22.2 No. 88, ISO 9001, WQA tested & certified against NSF/ANSI 372 for lead free compliance. TECHNICAL SPECIFICATIONS – Single Phase 50/60 Hz; Voltage: 240 V/208 V; Wattage: 14.4 KW/10.8 KW; Min. recommended household electric service 100 A; Amperage draw: 2 x 30 A 2 x 26 A; Number and min. recommended size of circuit breakers: 2 x 30 A (DP); Number of runs and min. recommended wire size (copper): 2 x 10/2 AWG; Max. temperature rises: 65 F/49 F at 1.50 GPM, 43 F/37 F at 2.25 GPM, 33 F/25 F at 3.00 GPM, Min. water flow to activate unit: 0.50 GPM/1.9l/min; Weight: 16.1 lb/7.3 kg; Nominal water volume: 0.26 gal/1l; Max. inlet water temperature: 131 F/55 C; Working pressure: 150 PSI/10 BAR; Tested to pressure: 300 PSI / 20 BAR; Water connections: 3/4"" NPT."

Important information

Wattage

14 KW

Bulb Voltage

240 volts

Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,880 global ratings

Customers say

Customers like the appearance, value, heat and ease of installation of the water heater. For example, they mention it takes up almost no space, it's worth the price and it produces hot water on demand. They appreciate the ease of setup, saying the wiring and plumbing were straight forward. Customers are also impresseded with the performance, saying it works amazing and is quiet.

AI-generated from the text of customer reviews

227 customers mention183 positive44 negative

Customers like the performance of the water heater. They say it's been working great, impressed, and does its job. Some say it works great for their large home, is pricier than the Rheem, but performs much better for the same kilowatts, and provides instant hot water.

"...Excellent product!" Read more

"...It's efficient, reliable, and space-saving, making it a top-notch choice for anyone in need of a hot water solution...." Read more

"...After that.. it stays hit for ever and I haven't had it run cold.Hope this helps...." Read more

"...Electron in my home five months ago and, for the most part, it has worked well...." Read more

163 customers mention121 positive42 negative

Customers like the heat of the water heater. They say that it keeps on putting out hot water, has no flow problems, and has not run out of hot water. Customers also appreciate that there are no cold water sandwich problems or interruptions in the flow of hot. Overall, customers are happy with the quality and performance of this product.

"...It produces hot water, on demand, limited only by your water supply...." Read more

"...The temperature control is precise, ensuring that you get the hot water you desire without any fuss...." Read more

"...Pros:Heats water on demand, saving energy and spaceSimple and sleek designConsistent hot water deliveryCons:..." Read more

"...It was warm but not super hot. So I turned it up to 125 and definitely had to add cold water to the shower...." Read more

105 customers mention91 positive14 negative

Customers find the installation of the water heater to be very easy. They mention that the wiring and plumbing are straight forward, and fun to complete. They also say that the water tankless heater is simple and sleek, making it easy for the plumber and electrician to hook up.

"...this is pretty straight forward and can easily be a DIY install.On to performance...." Read more

"...That was sufficient to securely mount .Plumbing is straight forward. I replaced flex lines with PEX and insulated the hot sided...." Read more

"...Review:The Stebo Electron tankless water heater is a simple and sleek design that heats water on demand, saving energy and space...." Read more

"...Easy to install and it worked great. Hot water in this unit is fantastic. No more waiting around for the tank to heat back up. Love it!!!" Read more

101 customers mention74 positive27 negative

Customers like the quality of the water heater. They say it's the highest quality electric hot water heater they've ever owned, it'd be an amazing water heater, and it'll maintain a constant temperature. The hardware has had major improvements, and the interface is easy to use. The shower is great and there are no flow problems. Overall, customers are satisfied with the quality and functionality of the product.

"This is an absolutely amazing water heater. I replaced my propane tanked water heater with this...." Read more

"...I appreciate the quality of this unit, and even the licensed plumber who installed it mentioned that it's one of the top brands in the market...." Read more

"...separately, but these heaters DO require ongoing maintenance, and the purpose of the isolation valves is to enable trouble..." Read more

"...This is a well established company with a good quality product." Read more

48 customers mention48 positive0 negative

Customers like the appearance of the water heater. They say it takes up almost no space, has a great compact design, and can be installed in flexible locations. They also appreciate the small form factor and easy fit-up. Customers also say the directions are simple and well laid out. They mention that the design is very simple with few mechanical parts and an easy to open cover.

"...I have mine set at 116 degrees, (extremely easy to read/adjust the display/temperature)..." Read more

"...It's efficient, reliable, and space-saving, making it a top-notch choice for anyone in need of a hot water solution...." Read more

"...The Stebo Electron tankless water heater is a simple and sleek design that heats water on demand, saving energy and space...." Read more

"These work great. Nice continuous hot water! Also, really save you a lot of space." Read more

40 customers mention29 positive11 negative

Customers like the temperature display of the water heater. They mention that it has an excellent consistent temperature, with accurate control. They also appreciate the flow limiter to maintain a constant temperature. The front panel displays the set temperature, and the dial control allows for fine-tuning. Customers also mention that there are no cold spots in the line.

"...3. Accurate temperature control. We have two presets and one has been set for filling the soaking tub...." Read more

"...Operation is simplicity itself - the front panel displays the set temperature, and the dial control allows the temperature to be adjusted easily...." Read more

"...We had a small issue with the temp adjustment knob but a quick call to their tech support and they provided me with some suggestions that..." Read more

"...It's nice to enjoy a shower at the desired, constant temperature. Very nice." Read more

39 customers mention33 positive6 negative

Customers like the value of the water heater. They say it's worth the price, saves them a lot of money, and provides hot water on demand.

"...It produces hot water, on demand, limited only by your water supply...." Read more

"...the hot water necessary, which is not only eco-friendly but also cost-effective...." Read more

"...Electric bill also shows a savings since it is only using power when heating water not like a big tank of hot water that is always keeping it hot..." Read more

"...units for 4 years for clients because they are very reliable and affordable But this past 6 months I have had 2 failures after only being installed..." Read more

30 customers mention24 positive6 negative

Customers like the energy efficiency of the water heater. For example, they mention it has advanced technology, saves energy and space, and is more efficient than the tank. Some say that the product takes a lot of power to run.

"...performance has exceeded my expectations in terms of convenience and efficiency...." Read more

"...Replacement is fairly easy for a skilled DIYer. Unit is light and easy to install on the wall...." Read more

"...Pros:Heats water on demand, saving energy and spaceSimple and sleek designConsistent hot water deliveryCons:..." Read more

"...Not energy efficient...." Read more

Better than the one I replaced, but not perfect
4 Stars
Better than the one I replaced, but not perfect
This unit puts out very hot water despite very cold water in (water lines are not buried deeply enough in our neighborhood). The unit it replaced (after 10 years) never worked this well, though I was happy with it. The feature that slows down flow to keep up output temperature has been an improvement.I really don't like the layout of connections, though. Wires come in the bottom, but the terminals are at the top. Water connections are widely separated on either side of the electrical entrance, which is not convenient when both water connections come in from the same side.
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Top reviews from the United States

Reviewed in the United States on February 14, 2024
Style: Tempra 20 Plus (20 kW)Pattern Name: Water HeaterVerified Purchase
5 people found this helpful
Report
Reviewed in the United States on September 27, 2023
Style: Tempra 20 Plus (20 kW)Pattern Name: Water HeaterVerified Purchase
Customer image
5.0 out of 5 stars Efficient and Reliable Hot Water Solution
Reviewed in the United States on September 27, 2023
I recently had the Stibel Electron Tempera 20 electric tankless water heater professionally installed in my two-story home, and I couldn't be happier with the results. The installation took about four hours, including the addition of a whole-home water filtration system on the main line. The unit's performance has exceeded my expectations in terms of convenience and efficiency. First and foremost, the unit is impressively quiet, and its space-saving design is a game-changer. It doesn't take up much room, and the minimal noise is a bonus, especially if it's installed near living spaces. But what truly sets this tankless water heater apart is its ability to provide a continuous flow of hot water.

I've tested it by running two showers simultaneously for an extended period, and there was no interruption in the supply of hot water. The heater only uses the hot water necessary, which is not only eco-friendly but also cost-effective. The temperature control is precise, ensuring that you get the hot water you desire without any fuss. I appreciate the quality of this unit, and even the licensed plumber who installed it mentioned that it's one of the top brands in the market. This gave me confidence in my purchase decision. I had concerns about whether it would deliver hot water everywhere in my house, but those worries were unfounded. My two-bedroom, two-story home now enjoys consistent hot water supply throughout.

Of course, like any appliance, it's important to manage usage efficiently. Running multiple showers, a dishwasher, and a washing machine simultaneously might be a stretch for any water heater. However, with a bit of scheduling and planning, I've had no issues. I wash in the morning, run the dishwasher before bedtime, and take showers at various times throughout the day, ensuring they don't overlap. In conclusion, investing in the Stibel Electron Tempera 20 electric tankless water heater has been a wise decision for my household. It's efficient, reliable, and space-saving, making it a top-notch choice for anyone in need of a hot water solution. I also highly recommend having it professionally installed for peace of mind. It's a purchase that I'm truly satisfied with.
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14 people found this helpful
Report
Reviewed in the United States on March 11, 2023
Style: Tempra 29 Plus (29 kW)Pattern Name: Water HeaterVerified Purchase
Customer image
5.0 out of 5 stars Great electric tankless water heater.
Reviewed in the United States on March 11, 2023
Our 20 year old water heater finally quit. The wife always wanted to replace the old one with a tankless as it was installed in our master closet. It took up valuable space as there is Never enough room for her clothes and shoes.lol.

Read the review and decided to order this one

Replacement is fairly easy for a skilled DIYer. Unit is light and easy to install on the wall. Unfortunately the unit isn't set up for USA house stud layout as the mounting holes are 15" on center. I ran wood screws into studs on one side and used drywall anchors on the other. That was sufficient to securely mount .

Plumbing is straight forward. I replaced flex lines with PEX and insulated the hot sided. Though I don't think it's really needed.

Electrical can be a little complicated and you really need to take a look at your main or sub panel that powers the water heater. The old tank heater only needed one 220 volt 30 amp breaker circuit to run.

This unit needs 3 separate 220 40 amp circuits to run. This means you need 2 more 220 volt spaces in the breaker box to add those lines. If you don't. You'll need to install a sub box to run.

I'm not comfortable with electricity so I hired a professional electrician to properly wire. He had to run 2 new lines and drill through walls to get them from box to heater. It was a task I gladly paid for. That did cost $1200. Seemed a little high but that seems the going rate here in central Texas.

Usage. I first set it at the 119 degree setting. Temp was. Ok but I would have to run my show only with the hot side running. It was warm but not super hot. So I turned it up to 125 and definitely had to add cold water to the shower. I finally cranked the thermostat all the way up and can now shower using 50/50 hot to cold water for the perfect shower temp.

Since this is an on demand hot water heater expect a minute or so for the hot water to reach your tap if you haven't used In a while or first thing in the am.

After that.. it stays hit for ever and I haven't had it run cold.

Hope this helps. We are really happy to get this water heater.

Now time to install more shelves and closet rods so my wife stops using my area for her clothes. Lol
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59 people found this helpful
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Top reviews from other countries

Translate all reviews to English
DHK
5.0 out of 5 stars Quality!
Reviewed in Canada on November 7, 2023
Style: Tempra 15 Plus (15 kW)Pattern Name: Water HeaterVerified Purchase
Luis Barajas
5.0 out of 5 stars wow, es lo mejor
Reviewed in Mexico on January 30, 2022
Style: Tempra 12 Plus (12 kW)Pattern Name: Water HeaterVerified Purchase
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Luis Barajas
5.0 out of 5 stars wow, es lo mejor
Reviewed in Mexico on January 30, 2022
por fin me gusta bañarme
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A. G. Maqueo
5.0 out of 5 stars Pequeño y silencioso, muy efectivo
Reviewed in Mexico on December 11, 2020
Style: Tempra 29 Plus (29 kW)Pattern Name: Water HeaterVerified Purchase
One person found this helpful
Report
Nathalie Haidar
5.0 out of 5 stars The Mercedes of tankless water heaters
Reviewed in Canada on July 25, 2023
Style: Tempra 20 Trend (20 kW)Pattern Name: Water HeaterVerified Purchase
Jorge Ortiz
2.0 out of 5 stars Una maravilla… (Actualización)
Reviewed in Mexico on June 11, 2019
Style: Tempra 36 Trend (36 kW)Pattern Name: Water HeaterVerified Purchase
One person found this helpful
Report