Apply to be a TradeMaster!
Main product image of Stiebel Eltron Tempra 20 Plus Electric Tankless Water Heater
Magnifying glass
Hover image to zoom
Stiebel Eltron Tempra 20 Plus Electric Tankless Water Heater
Magnifying glass
Hover image to zoom
TEMPRA-20-PLUS has been discontinued
Discontinued August 14, 2019
This product was discontinued because the part number was changed by the manufacturer. No modifications were made to the replacement product.
Direct Replacement:
Tempra 20 Plus, Whole House, Tankless Electric Water Heater
SKU:239221
(13)
Order by today, receive 12 by Tuesday
VIEW REPLACEMENT
VIEW REPLACEMENT

Product Highlights

Product Highlight: Fuel Type
Electric
Product Highlight: Max Flow (GPM)
8 MAX GPM
Product Highlight: Warranty
3 Year (Parts) Warranty
Product Highlight: Voltage
208V, 240v
Product Highlight: Connection Type
Threaded Connection
Product Highlight: Height (Inches)
14.5" Height

Description

Overview
The Tempra® series has been redesigned completely inside and out - upgraded heavy-duty electronics, a simple single flow sensor design, a hinged cover for easy access, and Advanced Flow Control for the Tempra® Plus. Welcome to the next generation of German quality.

Unlimited Supply of Hot Water
The Tempra® continually heats water instantaneously as you require it - and only when you require it. The Tempra® unit completely replaces a conventional tank heater with no disruption to your comfort and hot water needs.

Tempra Plus Featuring Advanced Flow Control
The Tempra® Plus is the most technologically advanced tankless water heater available on the market today. Advanced Flow Control is exclusive to the Tempra® Plus and ensures a constant temperature output no matter how great the hot water demand is.

Advanced Flow Control technology works by automatically adjusting the flow of water to eliminate unpleasant temperature fluctuation. What that means to you is a consistently satisfying experience every time, all the time!

Save Energy and Reduce Your Electric Bill
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.

Control Temperature Simply By Setting a Dial
Set the knob on the front cover and enjoy water temperatures between 86°F (30°C) and 140°F (60°C). Change the desired temperature at anytime. Advanced microprocessor technology ensures that the water temperature never deviates from the set point.

Proven Reliability
Stiebel Eltron has an enviable track record of engineering excellence and product quality. The three years parts warranty is unique in the industry. You can depend on the Tempra® for many years to come.

Sleek Design Fits in Anywhere
The Tempra® takes up considerably less space than conventional tank type water heaters and saves valuable living space.

No Venting Required
The Tempra® has several advantages over a gas-type tankless water heater. Compared to many similar gas tankless models the Tempra® is less expensive to purchase. Installation is also much simpler and cheaper since it is not necessary to vent a Tempra® to the outside.

The venting that a gas unit requires causes anywhere from a 10 - 20% efficiency reduction from heat escaping out the exhaust pipe. Furthermore, for every cubic foot of gas burned, roughly two cubic feet of air have to be mixed in to create ideal combustion. In a cold climate, this hurts efficiency further.

When a gas unit fires it draws in air around it, heats the water, and then expels warm exhaust outside. Since no house is airtight, this suction action causes a drafting condition where cold air from the outside seeps back in through door cracks and other parts of the house that may not be airtight.

By nature of the design, the Tempra® is nearly 100% efficient; converting 100% of the electrical energy it consumes into heat. All that heat is then transferred to the water - none is lost to the outdoors.

Superior, reliable performance
The Tempra® has several temperature and flow sensors which feed their readings into the unit's proprietary microprocessor control. Heating elements are engaged in stages, achieving the temperature you desire. The Tempra® continually monitors the water temperature it produces.

Specs

Fuel Type:

Electric

Application:

1 Shower

Voltage:

208V

240v

Amps (208V):

70 (2*35)

Amps (240V):

80 (2*40)

KW (240V):

19.2

KW (208V):

14.4

Water Connection:

3/4"

Connection Type:

Threaded

Height (Inches):

14.5"

Width (Inches):

16-5/8"

Depth (Inches):

4-5/8"

Warranty:

3 Year (Parts)

Max Flow (GPM):

8

Min Flow (GPM):

1.35

Contact

Help Face
CALL US
Question? Call or text 888-757-4774
+
Help Face

Questions?

Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
MondayThursday
8am7:45pm
Friday
9am7:45pm
SaturdaySunday
9am5:45pm


You May Also Need

Haymaker Descaler (1 Gallon)
SKU: 35231
Hercules

14 Replacement Parts

Housing for Tempra Plus (3rd gen), 331926
SKU: 331926
Stiebel Eltron
Temperature Sensor for TEMPRA Models, 280677
SKU: 280677
Stiebel Eltron
Help Image
Need help finding a replacement part?
Fill out the part request form and someone will get back to you shortly.
PART REQUEST FORM

Product Reviews

4.89 out of 28 reviews
100% would recommend this product
4.89
out of 28 Reviews
100% would recommend this product
WRITE A REVIEW
5 star
89%
4 star
11%
3 star
0%
2 star
0%
1 star
0%
WRITE A REVIEW
Customer Images
Showing 1-10 of 28 reviews

Great product and quick delivery

We bought this product to replace another tankless water heater and found the switch out to be seamless and simple. The product hasn't disappointed either. It is fast and efficient and we are very happy with it.
Murph
WI
2 months ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

So far, So good

Great to install, good directions and the one question we called the mfg about was answered quickly. We are heating just one full bathroom with it now, but have another one in the works to add to the load. The tank itself seems very well built, and I appreciate the simplicity of the design and replaceable parts should the need arise. The only reason I only gave it four stars is to wait and see the savings on my electric bill, and how it functions this winter with colder incoming cold water.
JCG1205
Central Virginia
9 months ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

For an electric TWH not bad

it produces decent HW for an electric tankless. Wiring requirements are nuts but that's the gig. Prob the best brand for this application on the market.
kcopp NH
Seacoast NH
1 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Nice heater

Looks great, let's hope it lives a long life. Make sure to read the specifications as it draws a lot of amps.
Mario
California
2 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Very Happy Client

We installed this for a client and it was crazy easy! Just check your electrical requirements. The unit works great too! Client is very happy! Will purchase again.
peggysue
Nashville
2 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Tankless hat water works

Fast delivery. Easy installation. It works. A tankless water heater is compact and takes up no floor space. This unit only runs when there's a call for hot water. I've installed this model before. Reliable and with minimal maintenance. Make sure your water is soft or softened.
CM
Amherst WI
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Small but powerful!

We use these in our small modular homes and they are perfect since the take up very little room, but still provide enough hot water for everything!!
Westwoo Cabins
SC
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Great water heater

I installed one in a cabin we have and was very happy with it so I put one in our home too
Bill
Massapequa Park, NY
4 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

This is such a "cool" product.

This is a great product as long as you keep it descaled. Do not let it go past a year without descaling or the heater will break down. Otherwise you have on demand hot water without a big tank taking up space in your house and then flooding it when it blows.
The Jackalope
Nashville TN
4 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Very happy

Install was straight forward, not very difficult. Works better than my oil furnace hot water and at $6/gal oil, saving money. Water pressure may even be better. Also, installed it closer to the fixtures so getting hot water faster. No complaints, quality unit. The screen is a little difficult to read if you're short and/or mount it above your head but I only looked to set the temp. once, not an issue.
Pat
CT
4 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Product Q&A

5 Questions
5 Questions
ASK A QUESTION

Q: can i use this product in a closed system filled with anti-freeze for use as the heat source in a heated driveway?

Asked by wang chung 12 years ago

Add your answer

* Required Field
Verified Author and ReplyVerified Reply- SupplyHouse Staff

We don't recommend it. The heater is not approved for use in space-heating applications. Aside from that, electric domestic water heater generally do not have fast enough recovery for space-heating jobs and their elements may not react well with glycol.

Was this review helpful to you?

Q: what can i expect to pay annually useing this system

Asked by John 14 years ago

Add your answer

* Required Field
Verified Author and ReplyVerified Reply- PexSupply Staff

On-demand water heaters are not rated with an estimated annual cost. The Tempra 36 PLUS draws 36 kW/hour at full load, so you can multiply your average weekly usage by your kWh rate by 52 to determine a rough figure. Keep in mind that 36 kW is a full load rate and the heater modulates to lower amperages when possible.

Was this review helpful to you?

Q: Based on this item I am hoping this is energy-efficient or energy compliant tankless water heater

Asked by juan 14 years ago

Add your answer

* Required Field
Verified Author and ReplyVerified Reply- PexSupply Staff

The Tempra 36 Plus is energy efficient compared to a tank water heater, only drawing power when needed. Over the long run, it will save you energy.

Was this review helpful to you?

Q: I;am replacing a 10 yr.old, 50gal, electric with a tankless electric water heater. What size will I need?? ( to get the same amount of hot water for our needs)

Asked by Jeannie 14 years ago

Add your answer

* Required Field
Verified Author and ReplyVerified Reply- PexSupply Staff

Tankless water heaters are sized based on peak GPM (gallons per minute) demand. A standard shower requires 2.5 GPM. If you have two showers running at the same time, for example, you would need a unit that provides 5 GPM.

Was this review helpful to you?
- Anonymous

The Stiebel Eltron Tempra 36 PLUS Electric Tankless Water Heater is designed to supply a cold climate home with 3 washrooms ample hot water. In a warm climate it can supply 4 washrooms.

Was this review helpful to you?

Q: Every other website says need 200 amp service. How come you say 300 amp. Also, do you need a separate unit for each area, i.e. bathroom, kitchen, laundry room

Asked by 15 years ago

Add your answer

* Required Field
Verified Author and ReplyVerified Reply- PexSupply Staff

According to the specifications below, the Tempra 36 requires a minimum of 300A electrical service. The unit will be sized based on your GPM requirements. It can produce a maximum of 4.5 gallons of hot water per minute. http://www.stiebel-eltron-usa.com/techdata_tempranew.html

Was this review helpful to you?