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Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch

3.6 3.6 out of 5 stars 729 ratings

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Purchase options and add-ons

Brand EcoSmart
Product Dimensions 11"W x 6"H
Wattage 3500 watts
Voltage 120 Volts
Maximum Flow Rate 1.5 Gallons Per Minute
Capacity
0.5 Gallons
Power Source
30 AMP
Material
Plastic
Item Weight
4 Pounds

About this item

  • 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
See more product details

Customer ratings by feature

Easy to install
3.4 3.4
Tech Support
2.4 2.4
Value for money
2.3 2.3

Frequently bought together

$182.91
Get it as soon as Wednesday, Mar 27
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$6.39
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Sold by Oceanside RV Supply and ships from Amazon Fulfillment.
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$58.72 ($1.67/oz)
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Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
EcoSmart Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch
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Price-8% $182.91
List:$199.00
$129.99$129.99$179.99$139.99$119.00
Delivery
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
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Customer Ratings
Easy to install
3.4
4.4
3.9
4.1
Tech Support
2.4
4.1
3.5
3.2
Value for money
2.3
4.3
3.6
Temperature Control
4.4
3.9
4.7
Sold By
Amazon.com
thermoflow
ECOTOUCH
Sain Store
Fogatti RV World
KOOBUY-US
capacity
0.5 gallons
6.5 gallons
240 gallons
2.5 gallons
3 gallons
power source
30 AMP
ac
AC
AC
Corded Electric
Corded Electric
mounting type
Wall
Wall
Wall
Wall
Wall
material
Plastic
Stainless Steel, Aluminum
Stainless Steel
Stainless Steel
style
POU 3.5
06kW
Protection
Indoor Installation
Indoor Installation
Indoor Installation

From the manufacturer

EcoSmart POU 3.5

At EcoSmart, we develop innovative, life-enhancing tankless electric water heaters for homes and businesses, enabling them to enjoy everyday living: sharing the warmth of endless hot water. Additionally, EcoSmart is part of the Rheem family of brands.

Every EcoSmart tankless electric water heater delivers endless hot water, while at the same time saving space, time, and allowing you to reduce your overall energy and water use.

EcoSmart products are technologically advanced and can be used worldwide in a variety of applications from homes of any size to business environments such as offices or restaurants, or even recreational vehicles. Each tankless electric water heater is easy to install and dependable.

Finally, as part of our commitment to give back to our communities, EcoSmart actively participates in the Rheem Heart of Comfort program with donations to Habitat for Humanity initiatives.

Go Tankless

POU
Product Features
  • Endless hot water
  • Compact design, more storage space
  • Digital temperature control 80 - 140° F
  • Field replaceable elements
  • Advanced self-modulating technology

Endless Hot Water- When sized correctly your tankless electric water heater will provide you with endless on-demand hot water. It heats water as it passes thru the unit, instead of storing hot water like a traditional tank water heater.

Save Space - Traditional tank heaters take up a lot of space, but EcoSmart's sleek, wall-mounted design frees up floor space for more storage and is 90% smaller than a tank.

Save Energy - EcoSmart features the most advanced self-modulating technology, only using the amount of energy needed to heat water when you need it.

Save Time - Point-of-use installation and on-demand heating cuts down on waiting for hot water.

POU 3.5

EcoSmart POU 3.5 is a 3.5-kilowatt tankless electric water heater ideal for point-of-use hand washing applications, and great in places like bathrooms, bars, strip malls, doctor’s offices, boats, recreational vehicles (RV). It has a maximum flow rate of 0.5 gallons per minute (gpm) and includes a 0.5 gpm sink aerator. This product is recommended for use with a single sink only. Do not use with a shower or multiple fixtures. To select the best solution for your hot water needs, please refer to the sizing guide. With EcoSmart you will be happier knowing the warm water you expect is available endlessly, consistently, and on-demand, allowing you to reduce your water and energy waste. Now that feels warm all over! EcoSmart – Sharing the Warmth.

3 Smart Steps for Endless Hot Water

POU 3.5 Sizing

Step 1: Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location. A lower inlet water temperature will require a higher kilowatt product.

Step 2: This product is fixed flow, which means that the output temperature rise of this product is determined by flow rate of the application. This chart gives you the expected temperature rise for various sink flow rates from 0.5 to 1.5 gallons per minute.

Step 3: Determining specifications and electrical infrastructure is important because without the correct infrastructure your unit may not fit into your breaker panel.

POU 3.5 POU 6 ECO 8 ECO 11 ECO 18 ECO 24
POU 3.5 POU 6 ECO 8 ECO 11 ECO 18 ECO 24
Customer Reviews
3.6 out of 5 stars
729
4.1 out of 5 stars
263
kW 3.5 6 8 13 18 24
Voltage: 240 120 Volts 220 Volts
Temp. Range 80°F - 140°F Fixed Flow Fixed Flow
Max Amperage 29 25 33 57 75 100
Required Breaker 1 x 30 AMP 1 x 25 AMP 1 x 40 AMP 1 x 60 AMP 2 x 40 AMP 3 x 40 AMP
Wire Gauge 1 x 10 AWG 1 x 10 AWG 1 x 8 AWG 1 x 6 AWG 2 x 8 AWG 3 x 8 AWG
Size 6" x 11" x 3" 7" x 11" x 3" 11.5" x 8" x 3.75" 11.5" x 8" x 3.75" 17" x 14" x 3.75" 17" x 17" x 3.75"
Weight 4 lbs 4 lbs 4.75 lbs 6.5 lbs 11.25 lbs 14.25 lbs
Water Connections 1/2" NPT 1/2" NPT 1/2" CF 1/2" CF 3/4" NPT 3/4" NPT

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.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Ecosmart

Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt, 6 x 11 x 3 Inch


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Product guides and documents

Product 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.

WARNING:

CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Important information

Wattage

3500 watts

Bulb Voltage

120 volts

Customer reviews

3.6 out of 5 stars
3.6 out of 5
729 global ratings

Customers say

Customers have expressed concerns about the quality and value of the water heater. They mention that it sometimes gets very hot before evening out, and that it does not allow for adequate temperature control. Customers also disagree on performance, and ease of installation.

AI-generated from the text of customer reviews

82 customers mention37 positive45 negative

Customers are mixed about the performance of the water heater. Some mention that it works well, while others say that it stopped working as soon as they started it up.

"Updating- loved this little thing until it completely quit working about 6 weeks after (expensive) installation...." Read more

"Works well enough for a sink, and only that. Nobody should be under any illusions this is meant for anything but....." Read more

"I had to return because amperage is very high… I would have needed to run 10 gauge wire and add a 40 amp breaker...." Read more

"...Once installed it works well and it can really only supply 1 shower tops with maybe 95-96f temperature...." Read more

25 customers mention13 positive12 negative

Customers are mixed about the ease of installation. Some mention that it's easy to install and use, the hook up was easy, and the support instructions were easy to follow. However, others say that the instructions are confusing, it took several weeks to install, and it was expensive to install according to directions.

"Just installed the unit and it was super easy took only 30min if that...." Read more

"...Installation is not DIY for most folks- we needed the electricians to do the install...." Read more

"Very easy to install if your a handy person.I didn’t need any tech support instructions where easy to follow...." Read more

"...It takes about a second to come on once the spigot is open, then you need to tweak the flow of water to get it to 1. get hotter, and 2. stay on...." Read more

69 customers mention19 positive50 negative

Customers are dissatisfied with the quality of the water heater. They mention that the water would not even get warm, it sometimes gets very hot before evening out, and the insta hot unit does not allow for adequate temperature control. In real life, they do not see the stated temperature rise, and that the performance of the product is less than impressive.

"...California, Santa Barbara, its almost September, ground water is getting fairly cold. Heats only about 0.25GPM to "hot" ~95-100*...." Read more

"...It sometimes gets very hot before evening out. All adults in this household, so it's not a problem. You might want to be careful with small kids ...." Read more

"...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...." Read more

"...In real life, I do not see the stated temperature rise. The packaging indicates 47.8° F temperature rise at a flow rate 0.5 GPM...." Read more

25 customers mention5 positive20 negative

Customers are dissatisfied with the value of the water heater. They mention that it's a waste of money, disappointing, and a joke.

"...review for Amazon i would remove this item from stock...Very Disappointing product..." Read more

"Would not recommend this product at all. Did not work! Waste of time and money!..." Read more

"...Not impressive at all. My recommendation is Do Not Buy It." Read more

"...You might want to be careful with small kids . All in all, a great value. We're happy with them." Read more

6 customers mention0 positive6 negative

Customers are dissatisfied with the flow rate of the water heater. They mention that it has a low flow rate required to achieve 35°F increase, and the water has to run slow pressure if they want to feel the water warm. They also say that the water ramps up slower than if it comes directly from their water heater, and that it's very finicky at which flow it will actually get hot at. Customers also mention that they have to restrict the flow a lot to get it to work.

"...get hotter, and 2. stay on. Too slow and it turns off...." Read more

"...The only issue is the low flow rate required to achieve 35°F increase, but that is a factor of energy-in vs. energy-out... The limiting factor is..." Read more

"...And ask too much of it, and you'll get nothing.....very finicky at which flow it will actually get hot at......I had higher hopes for this." Read more

"the water has to run slow pressure if you want feel the water warm, it has not power enogh to warm the running water" Read more

This is rarely the answer
4 Stars
This is rarely the answer
The customer wanted a small yet powerful undersink heater..I would normally not recommend one of these units but the customer was determined. I purchased this unit because it was 30 amps. I haven't heard back from the client so I'll assume its working adequately. 🤷‍♂️
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Top reviews from other countries

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JB
5.0 out of 5 stars Small so don’t expect big heat
Reviewed in Canada on January 4, 2021
RG
3.0 out of 5 stars Es un concepto que requiere muy buenos instaladores y eso por aqui no hay mucho.
Reviewed in Mexico on December 2, 2019
7 people found this helpful
Report
Edwin
1.0 out of 5 stars COMPRE NO FUNCIONARON YA LOS DEVOLVI Y AUN NO TENGO RESPUESTA
Reviewed in Mexico on January 19, 2021
RHooper
1.0 out of 5 stars Manufacture Says Model is not recomended for Canada
Reviewed in Canada on November 20, 2020
13 people found this helpful
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Ryan
5.0 out of 5 stars Works excellent as long as the incoming water temp is room ...
Reviewed in Canada on December 4, 2017
8 people found this helpful
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