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Rinnai

Rinnai RUCS75iN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

  • Based on 225 reviews
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Availability: Only 1 left in stock, order soon!
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Arrives Saturday, May 31
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Style: Natural Gas, Indoor Installation


Size: 7.5 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 7.5 GPM for a powerful, constant stream that serves up to 6 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 7.5 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: 34"W x 14.5"H


Special Feature: Endless Hot Water, Energy and Space Efficient


Color: White


Wattage: 89 watts


Brand: ‎Rinnai


Product Dimensions: ‎34"W x 14.5"H


Special Feature: ‎Endless Hot Water, Energy and Space Efficient


Color: ‎White


Wattage: ‎89 watts


Voltage: ‎120 Volts


Maximum Flow Rate: ‎7.5 Gallons Per Minute


Efficiency: ‎High


Style: ‎Natural Gas, Indoor Installation


Maximum Pressure: ‎1.5E+2 Pound per Square Inch


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎Rinnai


Item Depth: ‎10.1 in / (257 mm)


UPC: ‎766156008283


Global Trade Identification Number: ‎83


Part Number: ‎RUCS75iN


Item Weight: ‎63 pounds


Item model number: ‎RUCS75iN


Is Discontinued By Manufacturer: ‎No


Size: ‎7.5 GPM


Finish: ‎White


Shape: ‎Rectangle


Item Package Quantity: ‎1


Special Features: ‎Endless Hot Water, Energy and Space Efficient


Included Components: ‎Water Heater


Batteries Included?: ‎No


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: Saturday, May 31

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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  • Affirm Financing
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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

    • 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
    • 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
    • So happy I switched
Style: Natural Gas, Indoor Installation Size: 6.5 GPM
I'm very happy that I switched to a tankless. This Rinnai water heater is amazing. Be prepared for about $600 in parts to switch from a regular water tank to a tankless but in my opinion it's well worth it. It did have one little glitch when it was first installed. It kept shutting off after about 3 minutes of hot water and when it shuts off it is absolutely freezing cold. However once we figured out that the drainage line was sitting too low in the pump everything worked great. Very very happy with this product! ... show more
Reviewed in the United States on December 29, 2024 by jdlane
    • Hot water on demand of course
Style: Natural Gas, Indoor Installation Size: 7.5 GPM
Review Image by C. H. C. H.
I purchased the RUCS7i to attempt to save some $ on electric. After 3 solid weeks it appears the saving are there albeit minimal. According to the WWW the average savings is ~$100/year. It appears I will be getting $10-$15 / month savings. Of course this will be offset somewhat by the gas increases. Here in Florida the gas company gives rebates on changing from electric to gas...which we did, therefore expecting a $650 rebate to offset the costs. We do not expect water savings since the demand for our family will not change. Several things for me to note on the unit purchased. I like the efficiency rating, Ill get some tax break up to $300. The unit arrived damaged - mostly cosmetic dents as it looked dropped. Called Amazon and they gave me some refund. The unit works fine. Installation can be a pain due to installing the condensing vent and drain. There are no easy temperature adjustments and are varied by either setting dip switches or purchase of extra parts. There is only a single LED readout for displays....not even a power on / off switch. You just plug it in or not. I wish we could turn down the temperature. Minimum is 120 degrees. Here in FLA the ambient water temp during summer is already 75+ degrees. Not much hot water is needed to shower and adjusting for less hot water has shut off the water heater due to its minimal needed flow thus resulting in a luke warm shower which is too cold on some days. ... show more
Reviewed in the United States on June 1, 2020 by C. H. C. H.

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