ECOTOUCHTankless Water Heater Electric 240V, On Demand Hot Water Digital Display 5.5kW, Instant Heating With Overheating Protection, Black

I'd suggest to only use this within a few feet of water source so under a sink or next to shower great for a cabin but don't expect to have hot hot water just warm

The unit I received had a short of some kind and would draw my panel down to 50 volts

I bought this for tiny house/hunting cabin project. I have a 50Amp RV power hookup and was looking for on demand water heating for sink and shower. Since it may be a few weeks in between visits to the cabin I was shopping for a unit that is 1) Tankless to avoid keeping water in a water heater tank, and 2) On demand and small enough that would not draw too much power. I was looking at both the 5.5kW and 6.5kW model from Ecotouch and decided to go with the 5.5kW. If you are comfortable with the plumbing and able to install a 30amp double pole breaker for the 240V supply the installation is pretty simple. The unit is surprisingly small and simply hangs on the wall. I have the heater below the sink, and shower stall built right next to it so the pipe is very short going to either sink or shower. From testing so far the heater works as advertised. Easy to turn on and adjust the desired temperature, and after selecting temperature the display switches to show current temp in the unit. In my setup the water is pumped from holding tank in the cabin itself so starting temp stays around 65-67 degrees. I keep the unit set at 110 degrees output. The pump is 2.9 GPM max, so with faucet wide open the water gets warm but it does not get to 110 degrees, as expected from the specs. If closing faucet halfway, at approx 1.4 GPM it does easily reach approx. 100 degrees within seconds, and if closing faucet a little below halfway it will reach 110 degrees at constant flow, but of course water flow is lower at that point. Product specs are - 67 deg water will reach 109 deg at 1.2GPM. I may look for a flow regulator to more precisely test flow rate, but seems to be accurate.Results: The hot water supply to sink works great, as described taking the temperature and flow rate limitations into mind. I have seen other reviews that have used for a shower. My shower stall not quite finished but I will test the output once complete, keeping mind this is a small unit and will not achieve the flow rate of my shower at home for the size. It will probably work as expected.Update: Have been using this water heater the past few years and it has worked perfectly for both the sink and shower, although technically not advertised for shower use. I have a low flow shower head installed and when turning hot water on for about 5 seconds the water is as hot as advertised by the limitations of the unit. If hotter water is desired the flow can be turned down slightly.

Just warm water! I live in the north so the ground water temp is chilly. I didn't have high hopes but wanted the water to at least hit 100 degrees. Only getting about 89 to 95 degrees at a low water flow.

Make sure you can get the the water heater easily because if the power goes out, you will need to push the "on" button when power is restored. Mine is hard to access (I have to remove a big, very big drawer). It remembers that I set the unit for 120 degrees, but won't automatically turn back on.I bought the 5.5 kW, 240V unit and it can't keep up with a single sink. I had to reduce the flow in order to have 110 deg water. But what do you expect for a hundred bucks? Good enough for the game room sink.