Search  for anything...
Rheem

Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 8.4 GPM

    • Based on 38 reviews
Condition: New
Checking for product changes
$953.00 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – 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.

Selected Option

Free shipping on this product

30-day refund/replacement

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: In Stock.
Fulfilled by Amazon
Arrives Friday, May 9
Order within 2 hours and 40 minutes
Available payment plans shown during checkout

Recently Viewed

Size: 8.4 GPM


Color: Gray


Features

  • Continuous Hot Water & Comfort When Needed Provides enough hot water for your entire house, even when using multiple applications such as a shower and dishwasher
  • Save on Energy Costs High Efficient Water Heater only runs when needed
  • Save Water Water Saving Setting saves up to 1,100 gallons of water per year
  • Hot-start programming keeps the water heater in a ready state, avoiding any cold-water bursts
  • Save Space - New smaller size, 19%, and reduced weight by 22% compared to the previous model for easy installation and space savings

Description

Rheem’s RTG-84XLN-3 High Efficiency outdoor non-condensing natural gas tankless gas water heater delivers continuous hot water with minimal wait, saving time, energy and water. The RTG-84XLN-3 features exclusive Hot Start Programming which keeps the water heater in a ready state eliminating cold water bursts with back-to-back uses. Rheem’s exclusive Overheat Film Wrap provides heat exchanger overheat protection providing you peace of mind while you enjoy efficient, continuous, no wait hot water in your entire home. The compact size, wall mount and industry leading installation clearance allows for installation in small spaces, saving valuable floor space.

Brand: Rheem


Product Dimensions: 13.5"W x 20.75"H


Color: Gray


Maximum Flow Rate: 8.4 Gallons Per Minute


Maximum Temperature: 140 Degrees Fahrenheit


Brand: ‎Rheem


Product Dimensions: ‎13.5"W x 20.75"H


Color: ‎Gray


Maximum Flow Rate: ‎8.4 Gallons Per Minute


Maximum Temperature: ‎140 Degrees Fahrenheit


Efficiency: ‎GAMA efficiency certified


Style: ‎Outdoor Installation


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎Rheem


Item Depth: ‎9.4 inches


UPC: ‎020352761268


Part Number: ‎RTG-84XLN-3


Item Weight: ‎39.2 pounds


Country of Origin: ‎Japan


Item model number: ‎RTG-84XLN-3


Size: ‎8.4 GPM


Item Package Quantity: ‎1


Included Components: ‎Display


Batteries Required?: ‎No


Date First Available: October 23, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 9

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
Size: 7.0 GPM Color: Gray
Very nice and working excellent
Reviewed in the United States on January 25, 2025 by Tony
    • Replacing electric water heater
Size: 7.0 GPM Color: Gray
Installed this to transition my water heating to gas for economy. This unit hung on the basement wall and didn't require an enclosure except for some sheet metal to encase the feed pipes. Original heater was left in place and valved off as a backup. This unit produces a nice flow of hot water that continues until you shut the water off. It takes a bit longer to heat up due to the gas startup and the added 12' of piping which is to be expected, but it is only about 5 to 10 seconds depending on which faucet is being used. It only runs when the water is turned on, so no tank heating is required. I think it is going to save me a noticeable amount on my electric bill even after the gas bill hits. ... show more
Reviewed in the United States on January 4, 2025 by L. Smith
    • Happy customer
Size: 9.5 GPM Color: Gray
We bought this for a customer and installed. They were very happy with the water heater. We did have a little trouble finding the correct cover for the pipes because that doesn’t come with it, but we eventually found it and the customer was very satisfied with the water heater.
Reviewed in the United States on November 16, 2024 by Mojogirl75
    • Does not work
Size: 8.4 GPM Color: Gray
Had to return after installing it since it didn’t work. Ignition didn’t work. Do not recommend.
Reviewed in the United States on November 9, 2024 by aneesh
    • Works very well
Size: 9.5 GPM (WiFi) Color: Gray
My old one was broken and instead hire someone to install a new one and paying 5000 dollars, I decided to do it by myself! It works very well.
Reviewed in the United States on December 11, 2024 by Amazon Customer
    • Bad ass
Size: 7.0 GPM Color: Gray
Easy hook up, for replacement water heater on my house
Reviewed in the United States on February 16, 2025 by Cade morris
    • Works well
Size: 7.0 GPM Color: Gray
Good but delivery ain’t so good l. Was already opened when I got it which was odd but it does really work
Reviewed in the United States on February 24, 2025 by Andy Li
    • Rheem instant hot water
Size: 7.0 GPM Color: Gray
Excellent product. We replaced our old one with this and are thrilled. Highly recommend
Reviewed in the United States on July 28, 2024 by Losbos

Can't find a product?

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