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Rinnai

Verified customer product ratings, model details, and review feedback.

Interior CTWH 160K Btu 6.5 gpm
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Model: RUCS65iN

AvidCX Verified

Interior CTWH 160K Btu 6.5 gpm

4.2 from 105 ratings

Super High Efficiency 6.5 GPM 130,000 BTU Natural Gas Exterior Tankless Water Heater

  • Professional installation required; call 84-GO-Rinnai for assistance.
  • Energy Factor of 0.93 / Uniform Energy Factor of 0.85
  • Save time with hot water whenever and wherever you need it, any size home, even for simultaneous uses at multiple fixtures
View Product
CUSTOMER REVIEWS
5 Stars
50%
4 Stars
32%
3 Stars
7%
2 Stars
6%
1 Stars
4%

4.2 from 105 ratings

"Customer review"

Anonymous Jul 20, 2022

5.0

"Customer review"

Anonymous Mar 10, 2022

4.0

"Customer review"

Anonymous Mar 5, 2022

5.0

"Exactly what we wanted "

Joe Feb 26, 2022

5.0

We bought a 80 year old house that had an old electric hot water heater. After a lot of research I decided on a Rinnia. So far it has been exactly what we wanted

"Heat very very slow. It takes very long time to get hot water."

Joyce Jan 8, 2022

1.0

"Customer review"

dreddy Nov 19, 2021

1.0

Great product. Meets expectations

"Great unit"

Fire Guy Oct 1, 2021

5.0

I purchased the RUCS65IN 3/21 and installed it myself. The unit is very well designed and it takes up a very small amount of space. The warranty is outstanding. The No clearance spacing for unit mounting was a plus and I chose the condensing design for better flame use. By going with condensing allowed for venting without concern of spacing as well. My install is on a basement wall and direct vents through the joist spacing above the concrete foundation. The heater has provided gray service for the past 6 months since installing.

"Customer review"

Anonymous Oct 1, 2021

5.0

"Customer review"

Anonymous Oct 1, 2021

2.0

"Great product....Get professional advice and installation!"

bc23 Oct 1, 2021

4.0

The tankless models come in many variations, I selected and bought my own without getting expert advice. The unit I purchased does great throughout the (Circa 1900) house except for two faucets that have always suffered from low flow...one being the kitchen sink...which now take even longer to get hot. No complaints about the Rinnai unit but I think I should have spent more for a unit that supports the re-circulation feature.

"Customer review"

Anonymous Sep 30, 2021

5.0

"Customer review"

Anonymous Sep 30, 2021

0.0

"Too slow to warm up the water"

Happyness May 21, 2021

2.0

6 months

"Consistent Hot Water"

gurugraf Apr 14, 2021

5.0

We have only had our Rinnai for about 7 months and we have had no issues with it. It consistently provides the hot water we need.

"Awesome tankless water heater!"

Gary Apr 7, 2021

5.0

Trouble free operation, water is nice and hot throughout the house, heats immediately.

"Takes too long for the water to get hot. Not happy with the Rinnai."

Anonymous Apr 6, 2021

1.0

It takes too long to get hot water to the kitchen & bathrooms. We feel like we are wasting a ton of water waiting for it to get hot. My husband heats up water on the stove to clean the pots & pans.

"Great quality water heater!"

Tiramisu Apr 6, 2021

5.0

Starts heating the water instantly. Have been using the tankless water heater for the past 6 months and never had a bad experience.

"Customer review"

Betsy Feb 26, 2021

4.0

I like the idea of a thankless water heater. It saves room, energy, and I don't feel it's as wasteful.as a traditional water heater. It is not instant hot water. It takes about a minute to warm up but there is never lack of warm water for showers, washing, etc. Our Rinna water heater was installed into our new house in Sep 2020. I am more than satisfied with this prouct.

"Customer review"

Anonymous Feb 4, 2021

5.0

"easy to install"

brutus Jan 27, 2021

5.0

more specifics on the exhaust

1