Rheem6kW 240V Point of Use Tankless Electric Water Heater

I bought this to replace a 52 gallon EWH that served just the washing machine. It works fine for delivering warm to very warm water on demand. Not capable of producing very hot water. Would buy a larger kWh next time. But very satisfied with purchase and energy savings.

The heater was easy to install and I like the digital display.My previous tankless heater from another manufacturer would not tolerate over voltage conditions. I will update this review in a couple of months to report how well the Reem heater works in this regard.

I purchased the Rheem RETX-06 November 22. I installed it around January in my garage. It is not a high use area so it needed to operate rarely. December 5 the unit would not heat water. The temp readout would blink with the temperature of the incoming water but would not heat. After numerous phone calls with tech support they said the flow meter was bad or plugged. They said they would send me a new flow meter until they found out the warranty expired 2 weeks ago. I purchased a new flow meter from Amazon for $20 and the unit still doesn't work. Save your money and buy a different tankless water heater. FYI Rheem and Ecosmart are the same company.

I installed an 8k for my shower and bathroom and love it. I installed this 6k under my kitchen sink. I love my 8k easy to set temp but this 6k you have to remove cover to change settings. I just left to factory settings and gets hot enough for sink and dishwasher. To much of a hassle to get under sink and mess with.

The thing works very well but if you have hard water it forms calcium deposits quickly on the elements which slough off and clog screens like on my spray nozzle at the kitchen sink. An open faucet should have no issues. This will require constant deliming I'm afraid and where it's at, under my kitchen sink cabinet, will not be fun to try and flush.

I had a forty gallon water heater go bad at my business. We only have two sinks used for washing hands only, so a big heater was really a huge waste of energy. I had first ordered a Bosch US7-2R, 7.2KW. It quit after only a few days. This Rheem 6KW seems to work just a tad bit slower in warming the water, but I like it much better. I love the display that tells you the temperature of the water leaving the heater and the fact it has an on /off switch. The quality of the cabinet is also much nicer and more ascetically pleasing. The Rheem also came with an electrical pigtail, the Bosch did not. This unit also seems to have much heavier water connection fittings than the Bosch. Overall this is a nice unit for one or two sinks in close proximity.

Installed this heater for a remote bath. The house is in Florida and we are on a well. Water is stored in a tank about 200 gal. to off gas the sulfer, therefore the water is at near ambient temp. This heats the water plenty hot for a shower or to wash up at a sink. Not sure about how long it will work. Right now it works great!

Super easy to install and super small size puts out decent amount of hot water

The installation is very simple however you need to understand that the power button does not turn the unit on and nothing lights up on the unit unless water is flowing through it. This is not well explained in the instructions.

Ne réchauffe pas l'eau comme promis à 140 degrés F

Let me start with the poor design. There's now indication if the device is under power or turned on. The display lights up only when the water is flowing. Seems like a safety risk.Because of safety reasons, the device turns off when water flow is low. But can't heat up higher water flow. So there's a fragile balance that has to be found to be able to take a lukewarm shower. Not hot, not warm: tepid. After some experimentation, I was able to reach temperatures of 24C-28C (incoming water was at 0C, or at least that's what the unit's display said when the flow started). And I had to wait minutes before this peak temperature was reached.