|Item Weight||14.8 pounds|
|Product Dimensions||18.25 x 3.5 x 14.5 inches|
|Item model number||RTEX-18|
|Is Discontinued By Manufacturer||No|
|Installation Method||Wall Mount|
|Item Package Quantity||1|
|Water Consumption||7 Gallons|
|Maximum Pressure||150 PSI|
|Included Components||Fittings, Aerators|
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Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
|Price:||& FREE Shipping|
|You Save:||$30.00 (7%)|
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- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
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|Sold By||ALCRSOAN||Amazon.com||ALCRSOAN||Big Frog Supply||Amazon.com||Wanshi trade|
|Item Dimensions||18.25 x 3.50 x 14.50 inches||3.63 x 14.00 x 17.00 inches||12.63 x 8.25 x 3.63 inches||18.25 x 3.50 x 17.63 inches||3.75 x 8.00 x 11.50 inches||13.12 x 3.12 x 17.00 inches|
This water heater offers quick, continuous hot water that is on demand for single point-of-use or multiple applications.Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement. Digital temperature control allows you to set your temperature in increments of 1°
Top reviews from the United States
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After several weeks of back and forth with Rheem, an electrician, a plumber and a contractor trying to figure out why it wasn't working, the electrician (2nd service trip) was reviewing the installed unit with Rheem customer service tech and discovered that the directions have the diagram upside down from how the unit actually was. I don't know what the conversations was after the finding...but the unit works now! Hope this save someone else the aggravation and stress we went through trying to make it work!
Overall I'm happy with this unit (replaced a 35 gallon electric). The biggest problem is that the water temperature fluctuates from hot to lukewarm when you're in the shower.
Jan 31, 2018
Good news: I don't notice the temperature fluctuation anymore. I'm not sure if the heater is "learning" or it's something else.
Bad news: I recently tried switching to dimmable LED light bulbs (Philips). The heater uses so much power that it causes a voltage drop. This confused the light bulbs and they flickered BADLY whenever I turned a faucet on. Fortunately switching back to incandescent eliminated the flicker, but it's disappointing. Non-dimmable LEDs might be fine. I am on a 200 amp panel, so maybe a larger panel won't have this issue either. Just be cautious if you have LEDs or want to switch to them.
Note: this is only for electric tankless heaters. If you are currently on gas I would recommend sticking with gas to avoid this problem.
- heats up cold Chicago well water without any trouble (up to 1 shower + 1 faucet at the same time). UPDATE: in winter, we had temperatures < 10 degrees for a week and I still got a HOT shower.
- small. It's SO NICE not to have a giant tank in my basement anymore. I still put this in my basement but you could stick it in a closet if you wanted. As the technology improves I think it will be a lot easier to upgrade this model with less labor.
- digital dial control is nice
- no tank, no anode rod, means that I'll never have to deal with rotten egg smell again!
- fluctuating temperature. This seems to have gone away
- causes flickering in dimmable LED light bulbs. Incandescent bulbs do not flicker
- can only handle 1 shower + 1 sink faucet at once. If you try to have 2 showers, or a shower while the dishwasher is running, your water won't be hot
- it does take a few seconds for the water to heat up, but it's quicker than I expected. Faucets that are further from the heater take longer to heat up. My kitchen takes about 7-8 seconds; the bath next to the heater takes 1-2 seconds.
- installation was very expensive and required running a new conduit around the outside of my house because the wiring was different from my old heater
My electricity bill doesn't seem to have gone up or down much. I would not go into this expecting any savings, especially with the cost of installation.