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Rinnai RUC98 - 6.3 GPM at 60° F Rise - 0.92 UEF - Gas Tankless Water Heater - Direct Vent
Model:
RUC98IN
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Features
Fuel
Natural Gas
Location
Indoor
# of Showers
3.0
UEF
0.92
Energy Star Certification
Yes
- Compact design saves space.
- The RUC98iN is designed to be able to be installed on any wall or in any compact space. With flexible venting options allowing for direct, concentric or twin pipe installations, Rinnai tankless water heaters are perfect for any home.
- Energy-efficient promise that saves you money.
- Tankless water heaters avoid the need to keep a large amount of reserve water heated at all times. This saves energy by only heating water when you need it, while an entirely electric ignition avoids the constantly wasted energy of a standing pilot light.
- Continuous Water for Multiple Applications
- Rinnai tankless water heaters provide an endless supply of hot water that remains uninterrupted, even when you're the last one in line for the shower.
Rinnai has been delivering nothing but the best for almost 100 years and that award-winning dedication can't help but be noticed in its SE+ Series. The RUC98iN and all of the SE+ Series models offer Rinnai's incredibly efficient condensing design line of tankless heaters. Rinnai's SE+ Series models utilize two premium heat exchangers to provide optimal reliability and durability. With a 0.92 Uniform Energy Factor and a sleek, innovative design, the RUC98iN is the ultimate option, and is easily maintained thanks to included isolation valves.
California residents see
Warning: This product can expose you to chemicals including Lead which is known to the State of California to cause Developmental Harm.
For more information go to: www.p65Warnings.ca.gov
Specifications
RUC98IN
General Information
Type
Tankless Water Heater
Product Line
Super High Efficiency Plus (SE+)
Product Sub-line
RUC
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Condensing
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Direct Vent
Storage Type
Tankless
Mount Type
Wall
Installation Location
Indoor
Gas Conversion Kit
Not Available
Subscription Eligible
No
UPC
766156008160
Performance
Maximum Input Capacity
Maximum Input Capacity
The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
199000 BTU
Minimum Input Capacity
15200 BTU
Flow Rate at 40F Temperature Rise
Flow Rate at 40F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
9.7 GPM
Flow Rate at 45F Temperature Rise
Flow Rate at 45F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
7 GPM
Flow Rate at 50F Temperature Rise
Flow Rate at 50F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
7.6 GPM
Flow Rate at 60F Temperature Rise
Flow Rate at 60F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
6.3 GPM
Flow Rate at 70F Temperature Rise
Flow Rate at 70F Temperature Rise
Flow rate measures how much hot water your heater can deliver. Click Learn More to determine the appropriate temperature rise to use based on your location. Learn More
5.4 GPM
Uniform Energy Factor
Uniform Energy Factor
Uniform Energy Factor (UEF) is a measurement of water heater energy efficiency. The higher the energy factor, the more efficient the water heater.
0.92
Minimum Flow Rate
0.4 GPM
Ultra Low NOx Emissions
Ultra Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx. Learn More
Yes
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Primary Vent Pipe Diameter
5 1/2 Inches
Gas Connection Size
3/4 Inch
Cold Water Inlet
3/4 Inch
Hot Water Outlet
3/4 Inch
Product Height
25 17/24 Inches
Product Width
18 1/2 Inches
Product Depth
10 Inches
Product Weight
61.7 Pounds
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
AHRI Certified
Yes
NSF Certified
NSF Certified
The National Sanitation Foundation has developed public health standards and certification programs to protect the world's food, water, consumer products and environment.
Yes
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Heat Exchanger Warranty
12 Years
Reviews
(13)
Rinnai RUC98IN Reviews & Ratings
Customer Photos and Videos
Customer Rating
4.92
(13 Ratings)
93% recommend this product
5
(12)
(12)4(1)
(1)3(0)
(0)2(0)
(0)1(0)
(0)
great fit and easy to mount
By Donald T
sandy, Utah
Purchased 07/24/2018 |
Review Posted 08/16/2018
Great water heater and easy to install as well as set temp. Water comes on demand as needed.
Donald T Recommends This
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Rating Breakdown
5/5
5/5
5/5
4/5
Awesome product
By Jeffery S.
Trinity, Alabama
Review Posted 08/10/2018
It works great replaced a 80 gallon water heater free up a lot of space and looks awesome
Jeffery S. Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
Best upgrade made to our house yet.
By Charles W.
NMB, South Carolina
Purchased 07/11/2018 |
Review Posted 08/08/2018
replacing a old 100 gallon water heater that was an energy hog. Very happy with the speed of the hot water to the faucet and never running out of hot water. Can't wait to see the savings on our electric bill.
Charles W. Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
Very Happy with the upgrade
By Marcus A.
Plainwell, Michigan
Purchased 05/31/2018 |
Review Posted 08/07/2018
This thing exceeded my expectations, i have a 2 bathroom home and we would regularly run out of hot water with a 40gal tank heater. When my tank was showing signs of leaking i started researching tankless and found this heater great price and better performance. I was skeptical that i was going to have to use a higher water temp setting being on a well in michigan, but we are only on the second settings at 125deg F, and the water is plenty hot and produces tons of hot water. This heater is amazing. Just do your home work on what you need if you are doing the install yourself.
Marcus A. Recommends This
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Rating Breakdown
4/5
5/5
5/5
5/5
Very good water heater
By Tim S
Bel Aire, Kansas
Purchased 07/08/2018 |
Review Posted 07/30/2018
I read a lot of complaints about how long it took to get hot water. The only thing I can think of is that people have really long lines because I notice almost no difference between this and my standard hot water tank. about 30 seconds and my water is hot.
Tim S Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
Top of the line water heater
By Todd V.
WATERVILLE, Ohio
Purchased 05/11/2018 |
Review Posted 06/08/2018
i purchased this heater to replace a tanked water heater because it took up less space and as energy efficient. This has allowed me to move my water heater and save energy cost. I am now able to use the space where the old heater was for additional storage.
Todd V. Recommends This
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Rating Breakdown
5/5
4/5
4/5
3/5
Great Product!
By Michel F.
Prescott, Arizona
Purchased 04/11/2018 |
Review Posted 05/02/2018
Easy to install and works great. Great product and value pricing.
Michel F. Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
It really is Forever Hot Water
By Peter G.
Dayton, Ohio
Purchased 03/03/2018 |
Review Posted 03/26/2018
This is our second RUC98iN. We left the first one installed in the house we sold after using it for more than 5 years. My wife and I have 6 kids, so you can imagine the water usage is pretty high. As much fun as cold showers are, this water heater ends that problem. It maxes out at 120F hot water, which is colder than most people are used to, but after a couple of weeks of it, you get used to turning up the hot water a little further than you used to and not running out of hot water. You don't need it as hot because it never runs out. The huge advantage of the max temperature is you and your kids don't get scalded by nearly boiling water. It is always consistently the same temperature. There is a slight delay of a gallon or so before the hot water comes. You can get rid of this delay if you plumb the recirculating model.
Cons: It is more initially expensive. It also wall mounts, so it is a bit heavy to hold up and screw onto the wall. Lighter than a tank, but not a one person job. Special venting requirements (you'll likely need to install a new vent pipe).
Pros: Consistent, forever hot water. Monthly cost savings. Our last one paid for itself in reduced natural gas bills in less than a year. Water comes out of the tap at a consistent temperature. No scalding to freezing variations. Takes up much less space than a tank water heater. The Rinnai and a water softener fit in the same footprint as the old tank used to.
Overall, this made such a difference that the first thing we did when we bought our next house was pull out the tank water heater and put in another one of these Rinnai. Highly recommended.
Cons: It is more initially expensive. It also wall mounts, so it is a bit heavy to hold up and screw onto the wall. Lighter than a tank, but not a one person job. Special venting requirements (you'll likely need to install a new vent pipe).
Pros: Consistent, forever hot water. Monthly cost savings. Our last one paid for itself in reduced natural gas bills in less than a year. Water comes out of the tap at a consistent temperature. No scalding to freezing variations. Takes up much less space than a tank water heater. The Rinnai and a water softener fit in the same footprint as the old tank used to.
Overall, this made such a difference that the first thing we did when we bought our next house was pull out the tank water heater and put in another one of these Rinnai. Highly recommended.
Peter G. Recommends This
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Expert Response
Thanks for your detailed review, Peter! We're glad you are enjoying the water heater.
Ken D.
eComfort Product Expert
Rating Breakdown
5/5
5/5
5/5
4/5
Pros:
Durable, Quiet, Reliable, High Quality
Cons:
Expensive, Needs own vent
Great Product
By Ruben L.
Yonkers, New York
Purchased 02/14/2018 |
Review Posted 03/08/2018
Easy installation and plenty of YouTube videos for help.
Ruben L. Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
Tentative thumbs up
By Al H.
Denton, Texas
Purchased 12/28/2017 |
Review Posted 01/18/2018
Two weeks and all is well. Too early to really pass judgment on how well it works in all conditions such as freezing weather and mud daubers. Beautifully made and very quiet.
Al H. Recommends This
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Rating Breakdown
5/5
5/5
5/5
5/5
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Rinnai RUC98 - 6.3 GPM at 60° F Rise - 0.92 UEF - Gas Tankless Water Heater - Direct Vent
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