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Rinnai

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

  • Based on 218 reviews
Condition: New
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$599.00 Why this price?
Memorial Day Sale · 51% off was $1,210.54

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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


Global Trade Identification Number: 20


Manufacture Year: 2021


Manufacturer: Rinnai


UPC: 766156008320


Brand: Rinnai


Model Number: RUCS65IN


Item Dimensions W x H: 22"W x 34"H


Capacity: 6.5 Gallons


Material Type: Polyvinyl Chloride


Style Name: Natural Gas, Indoor Installation


Color: White


Heat Output: 6.5 Gallons per Minute


Standby Power Shutoff: highly efficient


Maximum Pressure: 1.5E+2 Pound per Square Inch


Mounting Type: Wall


Is Electric: No


Voltage: 120 Volts


Flow Rate: 6.5 Gallons Per Minute


Power Source: Gas Powered


Additional Features: Condensing Technology, Energy Efficiency


Wattage: 89 watts


Frequently asked questions

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

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Excellent t product for high elevations.
The pros: -Fairly easy install but requires a number of fittings. - once installed- works great. - able to use a portable propane tank to run for long periods of time. Mine 100lb tank. - excellent on demand hit water. - low temp exhaust- just use a pvc pipe with thermal tape. - intake- pvc with a screen to prevent debris- very simple and cheap.- no need for special exhaust and intake plumbing fixtures. Cons- - must be installed properly- do highly recommend a professional. - buy a water pressure regulator- water pressure impacts the way the unit works. - ensure the proper gas pressure- also key to make the unit work. - make sure the settings on the unit are properly set to your condition- dip switches. - power- use a properly grounded power source- very important as well. ... show more
Reviewed in the United States on August 4, 2024 by JG
    • 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
    • Good unit, be careful what you wish for!
Style: Natural Gas, Indoor Installation Size: 6.5 GPM
This is not really a model specific review. This is a lower end indoor Gas unit and it works fine. I had been wanting to go tankless for a while, but we hit a pitfall in the transition. I like my hot water extra hot and live in an older home. We got it professionally installed, had them turn up the thermostat 2 notches from the default and found that our kitchen fixtures (which had always suffered from low flow/pressure on the hot side) no longer got hot at all...even with the taps wide open for 20 minutes. If we opened a bathroom hot tap, both the bathroom and the kitchen would then get hot around the same time, within about 1 minute. Some of what I read says that the recirculating models address this limitation somehow but we did not get one of those. Our kitchen taps have always been slow to get hot...putting in the tankless and cranking up the temperature two notches actually caused the hot water to NEVER flow to the kitchen...after turning it down to one notch above the default, it works but is appreciably slower than the old traditional water heater, taking about 5 minutes wide open to get hot when it is the only thing using hot water. Not a showstopper but I certainly wish I had known this was a possibility. Overall I am glad I did it. It works fine in the bathrooms and the laundry. The dishwasher runs long enough that the delay in the kitchen is not a big deal...trying to get hot water from the kitchen tap is a relative pain in the butt however. ... show more
Reviewed in the United States on August 16, 2021 by Bill Cashin
    • 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

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