Search  for anything...

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

  • Based on 722 reviews
Condition: New
Checking for product changes
$190.89 Why this price?
Save $8.11 was $199.00

Buy Now, Pay Later


As low as $31.82 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Apr 21
Order within 16 hours and 56 minutes
Available payment plans shown during checkout

Style: POU 3.5


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 47.8F Max temperature rise @ 1GPM is 23.9F Max temperature rise @ 1.5 GPM is 15.9F

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.

Brand: Ecosmart


Product Dimensions: 11"W x 6"H


Wattage: 3500 watts


Voltage: 120 Volts


Maximum Flow Rate: 1.5 Gallons Per Minute


Brand: ‎Ecosmart


Product Dimensions: ‎11"W x 6"H


Wattage: ‎3500 watts


Voltage: ‎120 Volts


Maximum Flow Rate: ‎1.5 Gallons Per Minute


Maximum Temperature: ‎105 Degrees Fahrenheit


Heat Output: ‎3.5 Kilowatts


Style: ‎POU 3.5


Maximum Operating Pressure: ‎150 Pound per Square Inch


Mounting Type: ‎Wall


Manufacturer: ‎Ecosmart


Part Number: ‎POU35


Item Weight: ‎4 pounds


Item model number: ‎POU 3.5


Is Discontinued By Manufacturer: ‎No


Size: ‎6 x 11 x 3 Inch


Shape: ‎Rectangle


Item Package Quantity: ‎1


Usage: ‎Residential


Included Components: ‎Rough Plumbing;Parts and Repair;water-heaters


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎1 Year Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.


Date First Available: October 19, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Apr 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Klarna Pay in 4
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • I thought it might be DoA like others reported
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. ... show more
Reviewed in the United States on October 30, 2017 by e21

  • Follow-up: TOTAL JUNK
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. ... show more
Reviewed in the United States on December 3, 2020 by Somebody's Mother

  • Easy install (30min) and works great!
Just installed the unit and it was super easy took only 30min if that. Made one trip to the HW store and got the right supply hoses and never needed any adapters just 1/2fip supply line and a 30amp plug. The in and out on the heater are standard water supply 1/2"NPT. I already had a 30amp circuit under the sink for the disposal so just plugged into that. Note: You need a 30amp power plug and the unit water outlets are standard 1/2" supply hose so I don't know why some reviews says it's not. The install is fast and easy if you prepare ahead of time. ... show more
Reviewed in the United States on December 29, 2019 by M-fam

  • Great device if you know what to expect.
The unit functions as it is supposed to and my lack of stars has to do with my own expectations. I was hoping for instant hot water. What it delivers is cool to warm to hot water depending on the rate and duration of flow. 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. Too slow and it turns off. And if you shut off the hot spigot for a minute or so, then turn it back on, the water that was sitting in the heating coils all that time will be VERY hot -- for a second or two -- then be replaced by cold water until the unit fires up again and starts heating. So, there is nothing wrong with this product. I was just hoping (dreaming) of endless, instant, hot water. ... show more
Reviewed in the United States on August 2, 2017 by Svalexplorer

  • Hot, hot water
We installed this 120VAC 30 Amp under the kitchen sink to feed the sink and dishwasher, water got real hot fast. Did not use any tech support. A good heater we have another one 240VAC 60A going on 10 years for the whole house, but we wasted a lot of water as it is far from the kitchen, no more wasting water. ... show more
Reviewed in the United States on June 15, 2021 by Patricia A.

  • Slightly missed the mark! But overall, I'm (STILL) very happy!
Update: 12-27-2020 This unit has been used on a daily basis for 2 years now. It's installed in an RV, where either myself or others live full time... MY ORIGINAL REVIEW STANDS; this water heater has met my needs (in Central Florida) even during the coldest part of the winter. 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 120 VAC, which is my choice to allow its (occasional) use on an inverter powered by solar/batteries. I would highly recommend the 230 Volt version if your installation allows for it. 12-26-2018 The unit has been installed and working fine for approximately one month. 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. The lowest flow rate that this unit will allow is 0.45 GPM... Any lower flow rate and the device shuts off the heating element - apparently this is to protect from overheating. While testing at 0.45 GPM, the maximum temperature rise I have experienced was 39.6°F. In a bench test configuration the current draw was 28 amps at 122 volts (3,416 watts). Considering the flow rate was slightly below 0.5 GPM, I've concluded that this unit does not efficiently transfer energy to the water. At least not efficient enough to achieve the rated temperature rise of 47.8°F at 0.5 GPM. Although it does not quite hit the mark regarding efficiency, IT CERTAINLY FITS MY NEEDS. For that reason I'm keeping it, and in fact will likely purchase one or two more of these units. Possibly I will buy a larger unit for another location. ... show more
Reviewed in the United States on December 26, 2018 by I-Fly4Fun

  • Very good for Washing Hands and Face....
Our water temperature is 57 degrees and drops as water runs under house. The small 120V POU 3.5 120V unit heated the water to 75 degrees (good enough for washing hands and face) instantly and up to 104 in about 25 seconds. I had to mount upside down to configure 120V connection and plumbing connections easily. I am very happy with purchase. ... show more
Reviewed in the United States on April 13, 2021 by P, Tibbitts P, Tibbitts

  • Lack of tempurature control and hot water gets to the faucet very slowly
First, the water ramps up slower than if I get it directly from my water heater. This was unacceptable. Secondly, the lack of a temperature control makes this useless, especially for the kitchen sink. Possibly may work better for a shower, but that is not what I wanted this for. Unfortunately, my contractor was delayed doing the kitchen renovation, so the return date lapsed 5 days ago! Argh! Beware of this unit and be forewarned. ... show more
Reviewed in the United States on February 13, 2023 by Andrew

Can't find a product?

Find it on Amazon first, then paste the link below.