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Stiebel Eltron Tempra 20 Trend

Product images: Amazon listings

Stiebel Eltron Tempra 20 Trend Review

7.0Good · out of 10Not in our top-5 rankings

Written from the listing and 103 buyer reviews, not from our own use · How we rate

The Stiebel Eltron Tempra 20 Trend ticks most of the boxes we care about: 19.2 kW at 240 V and a 7-year warranty. It suits a southern house with warm tap water and no gas line, and its sibling listing, the Stiebel Eltron Tempra 29 Plus, holds #3 in our whole-house electric tankless water heater ranking.

Variants of this model

These are sold as variants of one listing family. Each variant has its own page.

Price$544.43Price on Sep 30, 2026 · may have changed
Check the price on Amazon ↗ Stiebel Eltron Tempra 20 Trend (opens in a new tab)Affiliate link · price and stock on Amazon
Compare side by side ↗
Specifications
BrandStiebel Eltron
CategoryElectric tankless water heaters
FuelElectric
Stated heating power19.2 kW
Stated voltage240 V
Temperature range68 to 140 °F
Total current125 A
Stated warranty7 years
Buyer reviews103 · 4.5/5
ASINB07GYZNS4D

Full listing title: Stiebel Eltron Tempra 20 Trend Electric Tankless Water Heater, 19.2kW, 240V

Listing evidence
FuelElectric Full listing title
Stated heating power19.2kW Full listing title
Stated voltage240V Full listing title
Updated October 2026
Exact listing, ASIN B07GYZNS4D
Rating from a published formula

Compared with its closest rivals

Two electric tankless heaters of about the same power, closest to it on our rating, each with a dated price.

Compare side by side ↗

Stiebel Eltron Tempra 20 Trend

Stiebel Eltron Tempra 20 Trend

7.0Good · out of 10$544.43 Price on Sep 30, 2026 · may have changed
  • Stated: 19.2 kW · 240 V
  • 103 buyer reviews
  • Electric tankless water heaters
This product ↑
WINTEMP WN-18kW Electric, 240V

WINTEMP WN-18kW Electric, 240V

7.2Good · out of 10$279.98 Price on Sep 30, 2026 · may have changed
  • Stated: 18 kW · 240 V
  • 203 buyer reviews
  • Electric tankless water heaters
See the review ↗
Vancepic 18 kW Electric, 240V

Vancepic 18 kW Electric, 240V

6.8Good · out of 10$329 Price on Sep 30, 2026 · may have changed
  • Stated: 18 kW · 240 V
  • 19 buyer reviews
  • Electric tankless water heaters
See the review ↗

19.2 kW at 240 V

The heating power the listing states. At 240 V it draws about 80 A. Show that to your electrician first. Whether your panel has the room is the whole question, and the shower comes second.

What it has going for it

What changes in the morning shower rush

68 to 140 °F. The setpoint range per the listing. Above 120 °F at the tap is scalding territory for kids, so most homes set it lower.

7-year warranty. 7 years, per the listing. Read what it needs from you: many makers ask for a licensed install and regular flushing to keep it valid.

Warm tap water or a cold January?

Warm tap water: where it comes in around 62 °F (much of the South), 19.2 kW gives about 3 GPM of 105 °F water on our calculator's maths. That's one 2 GPM shower at a time.

A cold January: where it comes in at 42 °F, it's about 2.1 GPM, one 2 GPM shower at a time. Up north, that's the figure to size against, and it's why the honest answer is sometimes a second unit or gas.

Great for you if…

  • You live somewhere the tap water never gets icy
  • You want a long warranty: 7 years are stated

Skip it if…

  • You want self-modulating power: the listing doesn't say it modulates
  • Your panel is already close to full: 19.2 kW is about 80 A at 240 V
  • Your tap water comes in icy in January: 19.2 kW gives about 2.1 GPM at a 63 °F rise

Power, wiring and what's in the box

What the Stiebel Eltron Tempra 20 Trend listing names:

  • 19.2 kW
  • 240 V
  • 125 A total draw
  • 68 to 140 °F setpoint
  • Digital display

Warranty & support: 7-year warranty, as stated in the listing.

That is the maker's promise, not ours. Keep the invoice, register the Stiebel Eltron Tempra 20 Trend if the maker asks, and read the install conditions: many tankless warranties need a licensed install and regular flushing.

The installation manual has the last word on breakers and wire size; show it to your electrician before you order.

Stiebel Eltron Tempra 20 Trend, view 3

Price and cost per kW

$544.43 Price on Sep 30, 2026 · may have changed

At the price on Sep 30, 2026, each kW of stated heating power works out at about $28.36 (price ÷ stated kW, our arithmetic). That puts it in the pricier third of the 27 whole-house electric tankless heaters we have a price and a stated power for.

The electrician comes on top: new double-pole breakers, heavy wire and, in some houses, a panel upgrade.

The button opens the exact listing (ASIN B07GYZNS4D), where today's price, stock and seller apply. Sizes and variants of the same family often sit at different prices.

Stiebel Eltron Tempra 20 Trend, view 4

A better fit for your house and panel?

Colder tap water where you live? The WINTEMP WN-36kW Electric, 240V (8.1/10) is rated 36 kW.

Only one sink far from the heater? The ThermoMate 14 kW Electric, 240V (7.9/10) is a 14 kW point-of-use unit.

Want it to draw only what it needs? The Rheem 18 kW Electric, 240V (9.3/10) is self-modulating, per its listing.

Our take

The verdict

What we'd buy the Stiebel Eltron Tempra 20 Trend for is 19.2 kW at 240 V, with a 7-year warranty as a bonus. 103 buyers give it 4.5/5, which is a solid sign. Where it falls short: no stated self-modulation, while most picks here have it. We'd pick it if you live somewhere the tap water never gets icy; otherwise, put it next to the CAMPLUX 27 kW Electric (240V) first.

Check the price on Amazon ↗ Stiebel Eltron Tempra 20 Trend (opens in a new tab)Affiliate link · price and stock on AmazonAll electric tankless water heaters →

Living with it

Install day

New breakers, the unit on the wall next to the old tank's spot, water in and out. An electrician does the panel side.

The first shower

Hot in a few seconds once the water in the pipes has passed. Set it between 68 and 140 °F.

The first winter

With 42 °F water coming in, 19.2 kW gives about 2.1 GPM at 105 °F on our calculator's maths. Low-flow shower heads stretch that further.

Upkeep

Clean the inlet screen and flush out scale on hard water. Our flushing and descaling guide has the routine.

What buyers say

Buyers give it 4.5/5, a strong record, above our ranked picks' 4.3 average. 103 reviews is a fair sample, enough for the average to mean something.

The numbers
Buyer rating
4.5/5
Reviews
103
Ranked picks' average
4.3/5

The one thing we'd check first

Before the Stiebel Eltron Tempra 20 Trend goes in your cart, check your panel: it draws 125 A, so an electrician should look at the panel first.

Before you buy

Your panel

Take a photo of the panel label (main breaker size and free slots) and send it to the electrician with the listing. Our electrical requirements guide explains what they will look for.

Your winter flow

On our calculator's maths, 19.2 kW gives about 2.1 GPM with 42 °F winter water and 3 GPM with 62 °F water. Our flow-rate calculator does it for your region.

The install

Hardwired 240 V work needs a licensed electrician and often a permit. Our install cost guide shows what usually ends up on the quote.

Scale

Hard water still builds up on the elements and the inlet screen. Our flushing and descaling guide covers the routine.

How it compares

How the Stiebel Eltron Tempra 20 Trend stacks up against the closest alternative, the CAMPLUX 27 kW Electric (240V).

CriterionStiebel Eltron Tempra 20 TrendCAMPLUX 27 kW Electric, 240V
Our rating7.0/107.2/10
Heating power19.2 kW27 kW
Breakers125 A totalNot stated
Self-modulatingNot statedStated
Warranty7 yearsNot stated
Buyer reviews103 · 4.5/5141 · 4.3/5

Pick the CAMPLUX 27 kW Electric (240V) if you want our higher-rated option (7.2/10), with more power (27 kW) and self-modulating power; stay with the Stiebel Eltron Tempra 20 Trend for a longer stated warranty (7 years) and a higher buyer rating (4.5/5).

Compare side by side ↗See the CAMPLUX 27 kW Electric, 240V review →
The score in detail

How we rated it

Our score: 7.0/10

Buyer rating (45%)

40.5 / 45

4.5/5 average

Review volume (35%)

19.1 / 35

103 buyer reviews

Documented specifications (20%)

10.8 / 20

54/100 listing documentation score

Our rating is an evidence index on a 0–10 scale. It is not a buyer star rating, and we have not used the product ourselves.

  • Buyer rating (45%): the captured average shown on this variant's own listing page (not shared with the other Stiebel Eltron Tempra variants), damped when there are fewer than 50 reviews.
  • Review volume (35%): more reviews mean more reliable evidence, on a logarithmic scale up to 5,000 reviews.
  • Documented specifications (20%): how completely the exact listing documents the attributes that matter.

Our editors then look at how it compares with the other heaters we rate. A commission is never an input to the rating. Read the full methodology.

Read the methodology →

Frequently asked questions

Is the Stiebel Eltron Tempra 20 Trend any good?

We rate it 7.0/10 (good). It is based on 103 buyer reviews averaging 4.5/5 and the specifications stated in the listing.

How much hot water can the Stiebel Eltron Tempra 20 Trend deliver?

The listing states a heating power of 19.2 kW on 240 V. The headline flow is a mild-weather number: with cold winter water coming in, the same unit gives you less. Read the maker's flow chart at your winter rise, or let our flow-rate calculator do the sums.

What electrical service does the Stiebel Eltron Tempra 20 Trend need?

The listing states 240 V and 19.2 kW. At 240 V, that is roughly 80 A. A licensed electrician checks the panel, the breakers and the wiring before it goes on the wall.

What do you get with the Stiebel Eltron Tempra 20 Trend?

Its listing states 19.2 kW of heating power and a 7-year warranty. These are the seller's figures, not our measurements: how steady the temperature is in your shower and how it copes with your winter water can't be read from a listing.

What should I check before ordering the Stiebel Eltron Tempra 20 Trend?

Your panel: take a photo of the panel label (main breaker size and free slots) and send it to the electrician with the listing. Our electrical requirements guide explains what they will look for. Your winter flow: on our calculator's maths, 19.2 kW gives about 2.1 GPM with 42 °F winter water and 3 GPM with 62 °F water. Our flow-rate calculator does it for your region. The install: hardwired 240 V work needs a licensed electrician and often a permit. Our install cost guide shows what usually ends up on the quote. Scale: hard water still builds up on the elements and the inlet screen. Our flushing and descaling guide covers the routine.

Where can I buy the Stiebel Eltron Tempra 20 Trend?

We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.

Have you used the Stiebel Eltron Tempra 20 Trend yourselves?

No, we haven't used it ourselves. Everything on this page comes from its listing and 103 buyer reviews, read line by line and weighed with our published formula.

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