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

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.

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.

Exelente

BUT, it will heat water only if its coming out at a trickle. If you full blast the faucet, it will barely get to 95ºOther notes, the "power button" does really nothing. Once hooked up, it will turn on only when water is actually flowing through it, all by itself. So save yourself the troubleshooting. You will need a 30 amp breaker for this heater.

Update: 12-27-2020This 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.12-26-2018The 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.

No leakage, ease of installation, it's pretty small in size but the quality in heating while saving electricity is something to commend.

Pro: Small and tidy , turns on when you turn on the water and then turns off when you close the water so pretty energy saving.Con: Its not really hot, although the temp monitor shows 90s yet you get maybe mid 70s, also water pressure gets reduced a bit and you can't turn on the cold water to get pressure since the temp is not that hot.

I purchased the 110V 3.5kW version and installed it. At the same time, I also purchased the Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt. I installed both on the same day: one for the kitchen sink and another for a bedroom sink. The Atmor unit costs less, but it barely heats the water to lukewarm, whereas the Ecosmart unit works much better. I would recommend the Ecosmart unit because keeps heating the water for fast or slow flow rate. The Atmor units shuts down if the water flow is too high --- not a good design.