Search  for anything...
Rheem

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

    • Based on 146 reviews
Condition: New
Checking for product changes
$187.83 Why this price?
Holiday Deal · 0% off was $187.88

Buy Now, Pay Later

As low as $31.31 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 4 left in stock, order soon!
Fulfilled by Bed Bath Outlet USA
Arrives Dec 31 – Jan 2
Order within 11 hours and 31 minutes
Available payment plans shown during checkout

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


Product Dimensions: 10.88"W x 5.88"H


Special Feature: LED Display


Color: Gray


Wattage: 3500 watts


Brand: ‎Rheem


Product Dimensions: ‎10.88"W x 5.88"H


Special Feature: ‎LED Display


Color: ‎Gray


Wattage: ‎3500 watts


Voltage: ‎120 Volts


Heat Output: ‎3.5 Kilowatts


Style: ‎Water Heater


Maximum Operating Pressure: ‎150


Maximum Pressure: ‎150 Pound per Square Inch


Mounting Type: ‎Wall


Manufacturer: ‎Rheem


Part Number: ‎RTEX-04


Item Weight: ‎4.5 pounds


Country of Origin: ‎China


Item model number: ‎RTEX-04


Is Discontinued By Manufacturer: ‎No


Finish: ‎Stainless Steel


Shape: ‎Rectangle


Installation Method: ‎Wall Mount


Item Package Quantity: ‎1


Special Features: ‎LED Display


Usage: ‎Inside; Professional


Included Components: ‎Fittings, Aerators


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: January 19, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 31 – Jan 2

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

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
    • WARM WATER,not HOT
The water heater did not meet expectations. 105° Maxium temperature @ 1/2 gallon per minute. It says it will Service 2 or 3 sinks. It will not Service 1 sink. 105° water is warm, not hot by any standard. Since it is 110-120 volts a.c. I assumed it literally plugged into a wall receptacle. NO, it had to be hard wired with 10 gauge wire. I even call the HELP LINE. I knew more about the heater than the Representative after I had installed it. ... show more
Reviewed in the United States on December 20, 2019 by Larry K
    • It is not working at all
It could only went up to 67F for the sink hot water. The water was warm for a second and then turned into cold. It was not working at all.
Reviewed in the United States on May 6, 2023 by WEIYING C.
    • 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
    • Won't turn on! Like other reviews!
I read the reviews and saw people say it was junk. I just figured they did not read everything and they did not realize what they were purchasing. I installed the unit and it would not turn on. I saw this a few times in the comments. I went with Rheem thinking this was a bigger better company. This thing is pure crap! Don't buy it!!!!!! ... show more
Reviewed in the United States on September 9, 2023 by Amazon Customer
    • 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
    • Meets expectations
My husband found it easy to install and it functions as expected. We would recommend
Reviewed in the United States on January 16, 2020 by Rita Edwards
    • Get a bigger one.
Bought this for one sink. It takes 3-4 min to get warm water. It never gets hot.
Reviewed in the United States on November 27, 2023 by Carli

Can't find a product?

Find it on Amazon first, then paste the link below.