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Rheem 3.5kW 120V Point of Use Tankless Electric Water Heater

  • Based on 188 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
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Arrives Thursday, Jun 25
Order within 8 hours and 46 minutes
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Features

  • Compact and stylish with digital temperature control in increments of 1f ranging from 80f to 140f
  • RTEX04 and RTEX06 only show output temperature and are non thermostatically controlled

Description

The Rheem Performance RTEX-04 is a 3.5 kW tankless electric water heater ideal for low flow point-of-use applications. Typically this unit is installed at the point-of-use and hard wired to 120 volts requiring a 30-amp breaker. Rheem tankless electric water heaters offer a continuous, endless supply of hot water. A lower kilowatt unit can provide hot water on demand for single or multiple point-of-use applications while a higher kilowatt unit could provide hot water for a whole house depending on the inlet ground water temperature. Tankless electric water heaters save space, save energy, save money, and require no venting. The sleek, compact size, 90 percent smaller than a tank, allows you to save space and place the unit wherever you want, including under a sink. Tankless units only draw energy when hot water is flowing, while traditional tanks are constantly drawing energy to keep the water in the tank at the desired temperature.

Brand: Rheem


Capacity: 3.5 Gallons


Power Source: ac_dc


Product Dimensions: 10.88"W x 5.88"H


Special Feature: LED Display


Power Source: ac_dc


Special Features: LED Display


Wattage: 3500 watts


Voltage: 120 Volts


Flow Rate: 6 Gallons Per Minute


Maximum Temperature: 140 Degrees Fahrenheit


Heat Output: 3.5 Kilowatts


Efficiency: 99.8% Energy efficient


Maximum Pressure: 150


Mount Type: Wall


Is Electric: Yes


Maximum Pressure: 150 Pound per Square Inch


Capacity: 3.5 Gallons


Item Dimensions W x H: 10.88"W x 5.88"H


Item Weight: 4.5 Pounds


Item Depth: 3 inches


Brand Name: Rheem


Model Number: RTEX-04


Manufacturer: Rheem


UPC: 020352758008 020352682990


Global Trade Identification Number: 90


Manufacturer Part Number: RTEX-04


Included Components: Fittings, Aerators


Unit Count: 1.0 Count


Item Type Name: Water Heater


Color: Gray


Style Name: Water Heater


Material Type: Stainless Steel


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 25

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.

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Top Amazon Reviews


  • Great Product - IF YOU KNOW WHAT YOU ARE BUYING
First - I'm not new to tankless water heaters so I know what I am doing and know what I am getting going in. For my situation - I have a small 1 bedroom condo the Bathroom kitchen are all sharing the same wall. It will be centrally located less than 4ft from all facuet points. I live in Florida and my input ground water temp is almost 80 degrees year round. on top of that I was replacing an older 30 gal water heater that had #10 already ran to it (required for this one) and it was coming off a dual 30 amp which meant I could come off one side and get my 30amp 120 which is what this needs - and if i didnt like it I could upgrade to the 06 and it would take less than 15 min and this could sit in the closet as a back up. the key is to really understand the the flow rate and how it effects your temp as well as distance. in some some times its better to go with lower power and shorter distances which will have less heat loss as is my case. the con / recommendation if you buy one - get youself a very thin nut or a very fat washer for the npt connector depending on your installation you may have a leak and no more adjustment - im taking mine down adding a nut then a silicone washer - rethreading - then if i still have the leak i can adjust the extra washer down the great thing - its super easy to do that - flip its breaker - take it off the wall do what you need - and your done. ... show more
Reviewed in the United States on October 11, 2017 by chris crum

  • Almost felt scammed.
Barely was worth the install on my kitchen sink. It did warm up the water to hot but just barely. Then a little over a year later it just stopped working. Screen went blank, water flow no longer produced warm water. Complete waste of $250.
Reviewed in the United States on February 2, 2025 by Jason B.

  • Compact but efficiant
Compact but efficient water heater bought this to replace the water heater in my camper fits perfectly in the small spot I had for it. Heats water fast and stays hot.easily installed
Reviewed in the United States on May 17, 2024 by Amazon Customer

  • Not worth the money
It doesn’t heat up if you turn the water on half way it can only be used when water runs Verry slow
Reviewed in the United States on February 5, 2020 by Ray.Merrill

  • VERY disappointed
After a lot of work re-routing water lines for this unit to use for our shower, I was saddened to see how long it takes (3-4 minutes) for this device to produce water above skin temperature of 98 degrees. Our shower is a long way from the main water heater and we had to wait several minutes waiting for hot water to arrive. With this Rheem it takes about half that time; not "instant" at all. So we're not saving water or electricity as much as we hoped, or if at all. If this unit could be turned on before turning on the water flow, perhaps then hot water would be ready when we want it. Since it only activates itself when it senses water flowing through it, that's sadly not an option. Neither Rheem nor Amazon have responded to my requests for help. ... show more
Reviewed in the United States on July 10, 2024 by Jim D

  • Doesn't hear water.
Hooked this up at the kitchen sink. At first I thought it was the time of year and that I live in WV and these are not recommended . But today it was 91 degrees out and the water still isn't even a little hot. It gets slightly warm. I have a gas whole house one of the same brand and it's great. But this electric one is crap. I also bought an electric whole house one for the same house this small one is installed. I hope it works. Natural gas isn't an option so would have to go with an electric tank if it doesn't. ... show more
Reviewed in the United States on August 5, 2022 by Debra L. Boyce

  • Great product
This works great and heats up our water perfectly
Reviewed in the United States on May 10, 2024 by Micheal Sanford

  • Very Convenient
Great little heater ,when connected at 110 volts it works very good. Only using the device for a bathroom sink
Reviewed in the United States on June 12, 2023 by Kcarboni

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