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Rinnai

Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation

  • Based on 233 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Buildcom
Arrives Jul 29 – Aug 3
Order within 18 hours and 24 minutes
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Style: Natural Gas, Indoor Installation


Size: 6.5 GPM


Features

  • Endless Hot Water: Our tankless hot water heaters let you enjoy unlimited hot water flow throughout the house with a compact and durable design that fits your home and lifestyle
  • Energy and Space Efficient Tankless Gas Water Heater: This small hot water heater conserves energy, only heating when necessary; Multiple venting options offer flexible placement, including PVC/CPVC using the Ubbink Concentric to Twin Pipe adaptor
  • Optimal Water Pressure: This tankless water heater offers a high-performance hot water flow rate up to 6.5 GPM for a powerful, constant stream that serves up to 5 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively

Description

The Rinnai Super High-Efficiency Tankless Water Heater is the ultimate solution for energy-conscious homeowners seeking a smart, compact, and efficient water heating system. This tankless hot water heater offers intelligent features and a durable design that provides an endless supply of hot water, making it perfect for households of all sizes. Enjoy unlimited hot water flow throughout your home, as well as a compact and space-saving design that conserves energy by heating water only when necessary, providing optimal energy efficiency. With a high-performance 6.5 GPM hot water flow rate, this tankless gas water heater delivers powerful and constant water pressure for a satisfying and uninterrupted stream. Say goodbye to low water pressure and enjoy a powerful hot water experience. Rest assured with our on demand water heater, backed by a guaranteed warranty. Enjoy a 12-year residential warranty for the heat exchanger, 5-year warranty for labor, and 1-year warranty for parts. Rinnai's super high-efficiency tankless water heater models offer advanced technology in water heating. Unlike traditional tank heaters that accumulate rusty sediments, our compact water heater elements have a longer lifespan as water runs continuously through the pipes.

Brand: Rinnai


Product Dimensions: 22"W x 34"H


Special Feature: Condensing Technology, Energy Efficiency


Color: White


Wattage: 89 watts


Brand: ‎Rinnai


Product Dimensions: ‎22"W x 34"H


Special Feature: ‎Condensing Technology, Energy Efficiency


Color: ‎White


Wattage: ‎89 watts


Voltage: ‎120 Volts


Maximum Flow Rate: ‎6.5 Gallons Per Minute


Heat Output: ‎6.5 Gallons per Minute


Efficiency: ‎highly efficient


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎Rinnai


Item Depth: ‎10.1 in / (257 mm)


UPC: ‎766156008320


Manufacture Year: ‎2021


Global Trade Identification Number: ‎20


Part Number: ‎RUCS65IN


Item Weight: ‎54.9 pounds


Item model number: ‎RUCS65IN


Size: ‎6.5 GPM


Finish: ‎White


Shape: ‎Rectangle


Item Package Quantity: ‎1


Certification: ‎Energy Star


Special Features: ‎Condensing Technology, Energy Efficiency


Included Components: ‎Water Heater


Batteries Required?: ‎No


Warranty Description: ‎See Manufacturer


Date First Available: June 23, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 29 – Aug 3

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Impressive piece of technology
Style: Natural Gas, Indoor Installation Size: 6.5 GPM
Technology in these tankless units is so advanced from what was available 20 years ago. Impressive. I am a DIY home owner. Was faced with a leaking tank style water heater and found that power-vent style tank heaters were becoming difficult and expensive to buy. Seems like the on-demand heaters was the way to go. This Rinnai unit is a very good value in my opinion. Priced at the lower end, while having impressive features when compared with other manufacturers. My caution to others is to be prepared for expensive installation costs. Plumbing and exhaust changes in my home added up to over $200 in parts plus significant labor to do things right. This is not a fault of this particular unit. It is simply a general reality when converting from a tank style heater to one of these tankless units. I highly recommend buying the recommended valve kit for about $50. I did not buy the kit and was out over $100 with brass hardware to perform the same level of isolation and service connections. Review of the RUCS65iN model: Very pleased with its performance so far. (First week of operation) The Installation manual is organized well and has the info needed to guide a proper installation. It took me a bit to understand rules and restrictions for the exhaust / combustion piping, but the manual did help me get there. Make sure you have sufficient flow at your faucet to get past the minimum flow required before heat kicks in. Once heat is being applied, the unit will automatically adjust the heat input to match the water flow rate such that output temperature is precisely 120 degress F. (Can select higher temps with dip switches.) I was impressed with the amount of condensation that drained out during operation. This unit is so efficient with its heat transfer. PVC pipe works great for exhaust and barely warms up during long operation. ... show more
Reviewed in the United States on July 6, 2023 by Average DIY Family
    • Great basic unit
Style: Natural Gas, Indoor Installation Size: 7.5 GPM
This is a contractor grade unit, no frills or options. I replaced a tank style unit with this model and I can't tell the difference. It provides hot water when I need it. You must purchase a valve kit to install this unit. It must be back flushed just like a coffee maker. It is very quiet. This unit is a condensing type unit so it collects moisture that must be drained. The base unit does not have a control panel. The temperature is set by dip switches. A control panel add on is available. No wifi function on this model. I would purchase this again. ... show more
Reviewed in the United States on October 19, 2024 by Jeepdog81
    • A great unit! Here's what you need to install it!
The media could not be loaded. Amazing change from tanked electric. I have used all kinds of water heaters including tankless electric. The big difference between gas and electric tankless as you won't have to readjust all of your mixed water fixtures like showers with gas. It's capable of putting out enough heat. With an electric you have to run your water only from the hot side and set it to a comfortable temperature instead of mixing the cold and hot water. This unit is very quiet and is an insanely good value. I like that it uses 3/4 in water and gas supply. This unit does have a 3-in vent for twin pipe installation and can also take concentric venting. ... show more
Reviewed in the United States on October 20, 2024 by Diycommerce
    • Stay Away
Review Image by Anne Sheridan Anne Sheridan
I bought this to replace a smaller Rheem. It worked well for approximately 18 months, with a few minor annoyances. First one was in order to get hot water in the kitchen, we had to turn on a bathroom faucet, so Rinnai's claim of working well with lower water pressure aren't accurate. Irritating, but not necessarily a deal breaker. Another annoyance was the fact that you can't adjust the temperature lower than 120 F. I called customer service and was told to install a mixer faucet. I was hoping to use the line I had installed for the previous Rheem to use outside for washing pets. I had to replace that due to the water being too hot for that purpose. Annoying, but not that big of a deal. Well, last month the unit had a small explosion inside that burned up all its wiring and likely ruined the control board. The explosion was significant enough that it shook the house, knocking things off of the shelves. I called the propane company out and they pressure tested the line up to the unit and found no leaks. That means of course that a leak developed inside the unit. At the direction of Rinnai I had their technician come out to look at the unit. He had no way of testing it, just eyeballed it and stated that he didn't think Rinnai would back their warranty on it because the units are tested at the factory. He stated that he would contact them and find out. Three weeks have gone by with no word or contact from either Rinnai or their technician, so we have to assume that they have no intension of backing their own warranty or of dealing with the situation in any way. Now keep in mind that this was an explosion in their unit. A situation that could have burned down the house causing injury or death, but this company wasn't even interested in taking the unit in to inspect it. I would be satisfied if the company had just gone this far. If at this point they stated that the unit didn't have a leak, I would accept that there must have been a leak below the unit that caused the buildup of gas in the bottom of its cabinet. Keep in mind however that the unit was perfectly installed and maintained, and still had rubber gaskets in place in the bottom where the wires exit, so the likelihood of propane, heavier than air, somehow wafting upward into the unit is extremely low. This water heater was over $1,000. at the time. It was installed with all proper clearances. It actually exploded under strange circumstances. While it worked adequately for 18 months, not as well as the lower priced Rheem, but acceptable, the fact that I am still paying for it on my Amazon account and it is a pile of junk that could have burned our house down, and that Rinnai couldn't care less about the situation, makes it a scary choice for anyone. ... show more
Reviewed in the United States on March 18, 2021 by Anne Sheridan Anne Sheridan

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