RHEEM RTEX-18 Electric Tankless Water Heater,4.4 gpm 53UJ86

Grainger
(124454)
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US $536.57
as low as $48.17/mo with
Condition:
New
More than 10 available7 sold

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Popular item. 7 have already sold.
Breathe easy. Free shipping and returns.
Shipping:
Free 2-4 day delivery
Get it between Tue, Nov 18 and Thu, Nov 20 to 94104.
Located in: Lake Forest, IL, United States
Returns:
30 days returns. Seller pays for return shipping.
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eBay item number:355732373981
Last updated on Aug 20, 2025 14:39:36 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
UPC
0020352685335
Brand
Rheem
Type
Water Heater
Power Source
Electric
Heating System
Instantenous (Tankless)
Color
Gray
Voltage
240 V
Model
RTEX-18
MPN
RTEX18
Features
Digital Display, Digital, Adjustable
Mounting Location
Wall
California Prop 65 Warning
Cancer and Reproductive Harm -- Www.P65warnings.CA.Gov/Product
Category

About this product

Product Identifiers

Brand
Rheem
MPN
RTEX18
Ean
0020352685335
GTIN
0020352685335
UPC
0020352685335
Model
RTEX-18
eBay Product ID (ePID)
24030640673

Product Key Features

Power Source
Electric
Color
Gray
Heating System
Instantenous (Tankless)
Voltage
240 V
Features
Digital Display, Digital, Adjustable
California Prop 65 Warning
Cancer and Reproductive Harm -- Www.P65warnings.CA.Gov/Product
Type
Water Heater
Mounting Location
Wall

Dimensions

Weight
8.5lbs.
Width
17.000
Length
21.000

Additional Product Features

Energy Star
Not Compliant

Item description from the seller

About this seller

Grainger

99.7% positive feedback•1.0M items sold

Joined Feb 2016
Usually responds within 24 hours
Visit storeContact

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.9
Shipping speed
5.0
Communication
5.0

Seller feedback (143,084)

All ratingsselected
Positive
Neutral
Negative
  • v***t (4356)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Seller was great but unfortunately I wont be ordering again due to FedEx being used. Item just as described. Amazing fast shipping. Great Price. Once again some of the boxes were RUINED BY FEDEX. FedEx literally tossed this item in the middle of our road with the oil and mud and it was run over yet Fedex marked it delivered and went on the merry way. Apparently FedEx thinks its ok to toss packages in the middle of the road and mark it delivered.
    GRAINGER APPROVED 11A689 PK 25 Shipping Box,12x12x12 in 11A689 (#317030293761)
  • r***f (269)- Feedback left by buyer.
    Past month
    Verified purchase
    I purchased another stack of 15 boxes for my business from Grainger and they had sent them via FedEx. What I received was a section of cardboard with my packing slip that showed my purchase, but no boxes. I called FedEx to investigate and their communication was poor and little help. I messaged Grainger and they responded within 5 minutes indicating they will reship another stack of 15 boxes and I'd received them next day. I was thankful and pleased with Grainger's excellent customer service!
    GRAINGER APPROVED 11A624 PK 15 Shipping Box,22x22x8 in 11A624 (#355731782204)
  • s***o (172)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Absolutely thrilled with purchase which was Great Quality & described. The sellers communication was outstanding—prompt, clear, and friendly. The item condition exceeded expectations in good value & appearance was even better than described. Packaging was meticulous, ensuring everything arrived safely. Shipping was fast and ahead of schedule. I’m genuinely impressed by the seller’s dedication and professionalism. This has been a wonderful buying experience, and I highly recommend this seller.
    GRAINGER APPROVED 11R210 PK 25 Shipping Box,12x9x4 in 11R210 (#356060753267)
See all feedback

Product ratings and reviews

Learn more
4.1
19 product ratings
  • 11 users rated this 5 out of 5 stars
  • 5 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 3 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 18 reviews
  • by roverhunter321
    Dec 17, 2019Top favorable review

    Good water temp even in winter

    Its a good medium duty water heater. I insulated all my PEX pipe tubing. Its about a 40 ft. run from the water heater to the shower and so it takes about 30 seconds for the water to reach the shower head. The shower head probably puts out more than 2 gal/min, so i have to turn the hot water volume down just a little to keep the temp up to where i like it. The water comes out of the well pump at around 49 degrees so this heater has got to increase the temp by around 56 degrees to keep the water at 105 degrees. So far It works satisfactory and this is December so it should work really good the rest of the year.

    Verified purchase: YesCondition: NewSold by: sellyourgoldusa

  • by claytomcge_6
    Jan 13, 2020Top critical review

    Misleading

    This water heater cannot handle 4.4 gallons per minute. It could not even keep up with my shower or kitchen faucet. It requires a lot of power too. It takes two 40 amp breakers and 8 guage wire to power the elements. When it cannot keep up, it flashes an error code and the troubleshooting guide suggests putting a flow regulator that limits it to 2 gallons per minute (less than half its advertised capacity).

    Verified purchase: YesCondition: NewSold by: cpo-outlets

  • by bigmudduck
    Apr 22, 2020

    GOOD PRODUCT, AT A REASONABLE PRICE.

    WORKS FINE. BUT IT IS NOT AS EASY TO INSTALL AS THEY IMPLY. THEY COULD HAVE PROVIDED MOUNTING SCREWS.

    Verified purchase: YesCondition: Pre-OwnedSold by: 4rebeccac

  • by 11keith007
    Jun 27, 2019

    Great water heater

    Bought this unit to put in my new house, been using it and it works great. My wife loves the endless hot shower

    Verified purchase: YesCondition: NewSold by: zorotools

  • by upstatease
    Jun 22, 2021

    You have to give it a try Im amazed but happy.

    I was as skeptical as anyone would be about one of these tank-less water heaters.But the Rheem RTX-18 Is without a doubt the real deal.Just do yourself a favor because there is absolutely no way around this part.Use 2 40Amp breakers I tried 2 30A's and it just will not do.I even tried a 30 and a 40.And yes I'm a glutton for punishment lol.Anyway get you one I'm sure you'll enjoy it.I will never go back to a tanked type.Oh and the one I have does accomadate my whole house.

    Verified purchase: YesCondition: Pre-OwnedSold by: 2014xcess

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