---
product_id: 7293225
title: "POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch"
brand: "ecosmart"
price: "€ 343.47"
currency: EUR
in_stock: true
reviews_count: 13
category: "Eco Smart"
url: https://www.desertcart.it/products/7293225-pou-3-5-point-of-use-electric-tankless-water-heater
store_origin: IT
region: Italy
---

# 3.5 kW power output 0.5 GPM max flow rate Compact 11x6x3 inch size POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch

**Brand:** ecosmart
**Price:** € 343.47
**Availability:** ✅ In Stock

## Summary

> 🔥 Compact power, endless convenience — heat on demand!

## Quick Answers

- **What is this?** POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch by ecosmart
- **How much does it cost?** € 343.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/7293225-pou-3-5-point-of-use-electric-tankless-water-heater)

## Best For

- ecosmart enthusiasts

## Why This Product

- Trusted ecosmart brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Space-Savvy Design:** Slim 11"x6"x3" profile fits discreetly under any sink, ideal for tight spaces like wet bars or RVs.
- • **Plug into Standard Power:** Runs on a single 30 amp breaker with 120V and 10 AWG wiring—professional installation recommended.
- • **Tailored for Your Climate:** Optimized for warmer regions; consider POU 6 for colder climates to maintain hot water flow.
- • **Energy Efficient Performance:** High 0.95 efficiency rating means less wasted energy and lower utility bills.
- • **Instant Hot Water, Zero Wait:** Delivers up to 0.5 gallons per minute—perfect for single-sink setups in warm climates.

## Overview

The EcoSmart POU 3.5 is a compact, electric tankless water heater designed for point-of-use applications, delivering up to 0.5 gallons per minute of hot water with a 3.5 kW power output. Its slim form factor fits neatly under sinks, making it ideal for residential and commercial single-sink setups in warmer climates. Operating at 120 volts and requiring a 30 amp breaker, it offers high energy efficiency (0.95) and a max temperature rise of nearly 48°F at 0.5 GPM. Perfect for wet bars, RVs, and small offices, it combines convenience with professional-grade performance.

## Description

From the Manufacturer This electric tankless water heater is a true Point of Use Model because it is specifically designed for under the sink, single applications with a maximum flow rate of 0.5-Gallon per minute (gpm) and includes a 0.5 gpm sink aerator. Its compact size allows for under the sink installations. The Point of Use models are ideal for: Wet Bars, Strip Malls, Doctor's Office, Boats, Recreational Vehicles (RVs), Bathroom Sinks. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.

Review: Perfect for my lemonade trailer - It is great light weight fits perfect love it going to order more
Review: Follow-up: TOTAL JUNK - Updating- loved this little thing until it completely quit working about 6 weeks after (expensive) installation. Attempted to reach desertcart about return/warranty information and zero response. Sadly... went for loving it to realizing it’s a crap product from a crap manufacturer. I installed this in a sheltered outdoor location at my ranch so my ranch helpers would have a very convenient place to wash their hands often during CovidTIme. It's right outside their office/hangout so they can wash up each time they come back for a tool or break, instead of having to go to another barn for the regular restroom. Installation is not DIY for most folks- we needed the electricians to do the install. That said, so far the unit is sturdy and products abundant hot water for a couple people to wash their hands well at a time. What I especially like about this unit is the very compact size- worked great in our location.

## Features

- Can provide hot water for one sink at 0.5 GPM in warmer climates
- Requires 1 x 30 amp breaker and 10 AWG wire
- For one sink at 0.5 GPM in colder climates the POU 6 is recommended
- Amperage Draw 29 amp. kW - 3.5 kW
- Connection Fittings 1/2" NPT
- Max temperature rise @ .5 GMP is 47.8°F Max temperature rise @ 1GPM is 23.9°F Max temperature rise @ 1.5 GPM is 15.9°F

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0047RAQZG |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #192,044 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #266 in Water Heaters |
| Brand | EcoSmart |
| Color | White |
| Customer Reviews | 3.7 3.7 out of 5 stars (757) |
| Date First Available | October 19, 2010 |
| Efficiency | High (.95) |
| Global Trade Identification Number | 00854920002176 |
| Heat Output | 3.5 Kilowatts |
| Included Components | Rough Plumbing;Parts and Repair;water-heaters |
| Is Discontinued By Manufacturer | No |
| Is Electric | Yes |
| Item Depth | 3 inches |
| Item Package Quantity | 1 |
| Item Weight | 4 pounds |
| Item model number | POU 3.5 |
| Manufacturer | Ecosmart |
| Maximum Flow Rate | 1.5 Gallons Per Minute |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Maximum Temperature | 105 Degrees Fahrenheit |
| Mounting Type | Wall |
| Part Number | POU35 |
| Product Dimensions | 11"W x 6"H |
| Shape | Rectangle |
| Size | 6 x 11 x 3 Inch |
| Style | POU 3.5 |
| UPC | 854920002176 783961953799 |
| Usage | Residential |
| Voltage | 120 Volts |
| Warranty Description | 1 Year Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages. |
| Wattage | 3500 watts |

## Product Details

- **Brand:** EcoSmart
- **Capacity:** 0.5 Gallons
- **Color:** White
- **Power Source:** Electricity
- **Product Dimensions:** 11"W x 6"H

## Images

![POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch - Image 1](https://m.media-amazon.com/images/I/51KCYkAZCTL.jpg)

## Questions & Answers

**Q: are any of these tankless water heaters plug in??**
A: Hello. According to the NEC and building code, electric tankless water heaters 15 amps or above do not include a cord with plug. They must be hard wired to a junction box or breaker box.
Feel free to ask us any other questions. GadgetsGo is one of the first Authorized Ecosmart Dealers, since 2009.

Kind Regards,
John M.
GadgetsGo

**Q: 60 degree water going in what degree will be at the tap**
A: Hello James. Great question. This unit heats water by 24°F at a flow rate of 1.0 GPM (and a proportionately lower temperature rise with a higher flow rate, and higher temp. rise with lower flow rate). All tankless water heaters operate on the same principle.

Therefore, you should add 24°F to your incoming water temperature of 60°F. The answer is 84°F.

This heater requires one 00 amp double pole breaker. 

For a complete explanation of how to choose a tankless water heater, check out our blog post at blog.gadgetsgo.com/how-to-buy-an-electric-tankless-water-heater

GadgetsGo is one of the first Authorized Ecosmart Dealers, since 2009.

Kind Regards,
John M.
GadgetsGo

**Q: Can the flow rate be adjusted up from 0.5gpm to say 1gpm or 1.5gpm (understood that the output water will be corresponding less hotter)? thanks in adv**
A: No.  This is a simple self- regulating unit. If you want more flow, and more hot water, go to the next size up that this company makes. I put this unit in my parents kitchen, where it doesn't get as hot and cannot cause burns. I have the larger unit in my kitchen. It can get very hot before it balances out.

**Q: Would this provide a decent shower in an RV?**
A: Hello. No, the POU 3.5 is only appropriate for hand-washing sinks. This unit heats water by 24°F at a flow rate of 1.0 GPM (and a proportionately lower temperature rise with a higher flow rate, and higher temp. rise with lower flow rate). All tankless water heaters operate on the same principle.

Therefore for example, when the incoming water temperature is 70°F or more, the output temperature will be at least 94°F at 1.0 GPM. (70 + 24 = 94. 

Possible shower flow rates: 1.5 to 2.5 GPM. Sink flow rates vary from 0.5 to 2 GPM. If you want to determine whether points of use other than a sink will produce at least 105°F, then calculate that with the data mentioned here.

This heater requires one 30 amp single pole breaker. If it will not produce the desired flow rate and temperature rise, then choose another model with more kW and amps, and ensure that you can supply it with the required electrical capacity.

This is a summary. For a better, more complete explanation of how to choose a tankless water heater for an RV, read our article at blog.gadgetsgo.com.

GadgetsGo is one of the first Authorized Ecosmart Dealers, since 2009. Feel free to ask us any other questions.

Kind Regards,
John M.
GadgetsGo

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for my lemonade trailer
*by D***S on December 29, 2025*

It is great light weight fits perfect love it going to order more

### ⭐ Follow-up: TOTAL JUNK
*by S***R on December 3, 2020*

Updating- loved this little thing until it completely quit working about 6 weeks after (expensive) installation. Attempted to reach Amazon about return/warranty information and zero response. Sadly... went for loving it to realizing it’s a crap product from a crap manufacturer. I installed this in a sheltered outdoor location at my ranch so my ranch helpers would have a very convenient place to wash their hands often during CovidTIme. It's right outside their office/hangout so they can wash up each time they come back for a tool or break, instead of having to go to another barn for the regular restroom. Installation is not DIY for most folks- we needed the electricians to do the install. That said, so far the unit is sturdy and products abundant hot water for a couple people to wash their hands well at a time. What I especially like about this unit is the very compact size- worked great in our location.

### ⭐⭐⭐⭐⭐ I thought it might be DoA like others reported
*by E***1 on October 30, 2017*

Works well enough for a sink, and only that. Nobody should be under any illusions this is meant for anything but.. When I first hooked it up, purged the air, turned on the electric and hit the power button, nothing happened. I thought it might be DoA like others reported; sure I wired it correctly as the other 120v device on the same circuit was working, I tried running some water, and boom it lit up. For some reason the power button will turn on/off when no water is flowing, but the LED display will not illuminate unless so. Live in southern California, Santa Barbara, its almost September, ground water is getting fairly cold. Heats only about 0.25GPM to "hot" ~95-100*. Thinking of replacing with the 6kw, uses the same wiring just gotta make room in my panel for another double pole breaker.

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-26*