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Written from the listing and 19 buyer reviews, not from our own use · How we rate
If you're after 18 kW of heating power, the Vancepic 18 kW Electric (240V) delivers, with self-modulating power on top. 19 buyers rate it 3.6/5, and it suits a smaller home or one main bathroom on electric.
| Brand | Vancepic |
|---|---|
| Category | Electric tankless water heaters |
| Fuel | Electric |
| Stated heating power | 18 kW |
| Stated voltage | 240 V |
| Wire gauge | 8 AWG |
| Stated warranty | 2 years |
| Buyer reviews | 19 · 3.6/5 |
| ASIN | B0GQTB2RWL |
Full listing title: Vancepic 18kW Electric Tankless Water Heater 240V Whole House
| Fuel | 18kWFull listing title |
|---|---|
| Stated heating power | 18kWFull listing title |
| Stated voltage | 240VFull listing title |
Rated from the listing's specs, no buyer reviews yet
What it's made for: a smaller home or one main bathroom on electric.
Two electric tankless heaters of about the same power, closest to it on our rating, each with a dated price.
The heating power the listing states. At 240 V it draws about 75 A, on 8 AWG wire per the listing. 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
Self-modulating. It draws only the power the flow and the setpoint need, instead of slamming every element on. Steadier temperature, and no wasted amps on a summer afternoon.
Warm tap water: where it comes in around 62 °F (much of the South), 18 kW gives about 2.9 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 1.9 GPM, less than one 2 GPM shower. Up north, that's the figure to size against, and it's why the honest answer is sometimes a second unit or gas.
What the Vancepic 18 kW Electric (240V) listing names:
Warranty & support: 2-year warranty, as stated in the listing.
That is the maker's promise, not ours. Keep the invoice, register the Vancepic 18 kW Electric (240V) if the maker asks, and read the install conditions: many tankless warranties need a licensed install and regular flushing.
Breakers and wire gauge are in the installation manual, and it overrides anything above; your electrician reads it first.
At the price on Sep 30, 2026, each kW of stated heating power works out at about $18.28 (price ÷ stated kW, our arithmetic). That puts it around the middle of the 27 whole-house electric tankless heaters we have a price and a stated power for.
The online price is the heater alone. New double-pole breakers, heavy-gauge wire and the electrician's visit are extra, and an older panel may need an upgrade first.
The button opens the exact listing (ASIN B0GQTB2RWL), where today's price, stock and seller apply.
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.
Our take
We like the Vancepic 18 kW Electric (240V) for 18 kW of heating power and self-modulating power. Only 19 buyers have rated it so far (3.6/5), so treat the score as an early read. Honestly, the catch: their 3.6/5 average sits under the 4.3 of our ranked picks. We'd pick it if you live somewhere the tap water never gets icy; otherwise, put it next to the Stiebel Eltron Tempra 36 Trend first.
New breakers, 8 AWG wire, the unit on the wall next to the old tank's spot, water in and out. An electrician does the panel side.
Hot in a few seconds once the water in the pipes has passed, and the power steps up and down with the flow (self-modulating, per the listing). Set it, then leave it.
With 42 °F water coming in, 18 kW gives about 1.9 GPM at 105 °F on our calculator's maths. Low-flow shower heads stretch that further.
Clean the inlet screen and flush out scale on hard water. Our flushing and descaling guide has the routine.
Buyers give it 3.6/5, a mixed record, below our ranked picks' 4.3 average. Only 19 reviews so far, and our formula damps averages built on fewer than 50.
Before the Vancepic 18 kW Electric (240V) goes in your cart, check your panel: 18 kW at 240 V is roughly 75 A, so an electrician should look at the panel first.
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.
On our calculator's maths, 18 kW gives about 1.9 GPM with 42 °F winter water and 2.9 GPM with 62 °F water. Our flow-rate calculator does it for your region.
Hardwired 240 V work needs a licensed electrician and often a permit. Our install cost guide shows what usually ends up on the quote.
Hard water still builds up on the elements and the inlet screen. Our flushing and descaling guide covers the routine.
How the Vancepic 18 kW Electric (240V) stacks up against the closest alternative, the Stiebel Eltron Tempra 36 Trend.
| Criterion | Vancepic 18 kW Electric, 240V | Stiebel Eltron Tempra 36 Trend |
|---|---|---|
| Our rating | 6.8/10 | 6.9/10 |
| Heating power | 18 kW | 36 kW |
| Self-modulating | Stated | Not stated |
| Warranty | 2 years | 7 years |
| Buyer reviews | 19 · 3.6/5 | 50 · 4.1/5 |
Pick the Stiebel Eltron Tempra 36 Trend if you want our higher-rated option (6.9/10), with more power (36 kW) and a longer stated warranty (7 years); stay with the Vancepic 18 kW Electric (240V) for self-modulating power.
We rate it 6.8/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
The listing states a heating power of 18 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.
The listing states 240 V and 18 kW. At 240 V, that is roughly 75 A. A licensed electrician checks the panel, the breakers and the wiring before it goes on the wall.
Its listing states 18 kW of heating power and self-modulating power. 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.
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, 18 kW gives about 1.9 GPM with 42 °F winter water and 2.9 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.
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.
No, we haven't used it ourselves. Everything on this page comes from its listing and 19 buyer reviews, read line by line and weighed with our published formula.