Maximize Hot Water
Load the laundry, start the dishes and still have enough hot water to enjoy a relaxing hot bath
The Ruud Tankless Revolution Starts Today
As the trusted leader in water heaters, we have revolutionized our tankless gas portfolio to offer a complete range of tankless products. Enjoy comfort and convenience with continuous hot water while saving energy and money from the brand you rely on.
Enjoy Instant Hot Water
Choose a Ruud® Super High Efficiency Tankless Water Heater with Built-in Recirculation Pump or add a recirculation pump kit for instant hot water at the faucet
Choose a Ruud® Super High Efficiency Tankless Water Heater with Built-in Recirculation Pump or add a recirculation pump kit for instant hot water at the faucet
Minimize Cold Water
Bursts
Exclusive Hot Start Programming™ eliminates cold water bursts for continuous hot water even in start and stop situations1
Exclusive Hot Start Programming™ eliminates cold water bursts for continuous hot water even in start and stop situations1
Save Energy
Tankless water heaters only produce hot water when you need it, so they save energy and money all the time
Tankless water heaters only produce hot water when you need it, so they save energy and money all the time
Select a Model
Front View
Back View
Inside View
Install Example
Install Example
Ruud® Super High Efficiency SR-Series
Get the Tankless Advantage
The new Ruud® S/SR-Series Super High Efficiency Tankless Water Heater with Recirculation makes it easy to decide to go tankless. In addition to providing continuous hot water, energy savings and the industry’s most comprehensive warranty, it also offers recirculation for the unmatched convenience—and water savings—of unlimited hot water. Plus, exclusive built-in features and rebate eligibility help keep upfront costs down.
Save Water & Money
Save up to 12,000 gallons of water from being wasted down the drain annually with the built-in recirculation pump2—that’s over $1,000 in water costs over 15 years
Save Space
Install in more locations with the industry-best 1/2″ side-to-side clearance for tight spaces3
Upgrade from Tank to Tankless Easily
Ruud® SR Series provides maximum install flexibility by allowing room air intake, common venting of two units, flex venting and 1/2″ gas line compatibility4 for a better tank replacement option
Save Money & Energy
The ENERGY STAR®-certified and best-in-class energy efficiency5 of Ruud® SR Series helps you save up to 36% per year in energy costs6
Stay Safe
Exclusive Overheat Film Wrap shuts down the unit if the heat exchanger overheats for added safety in your home7
Control Wirelessly with Built-In EcoNet® WiFi Technology
Enjoy complete control of your water heater—from adjusting water temperature and tracking energy usage to setting recirculation modes—all from a smart phone8
Make a Difference with Earth-friendly Efficiency
Shower, do the dishes and wash the laundry—all while reducing up to 65% of NOx emissions for Ultra Low NOx performance9
Enjoy High Efficiency at High Altitudes
Smart engineering enables Ruud® SR Series to work up to 10,200 feet above sea level
Minimize Cold Water Bursts
Exclusive Hot Start Programming™ keeps the water heater in a ready state (burner does not completely shut off) for five minutes between back-to-back usage to minimize cold-water bursts1
Spec Sheet
DESIGNED FOR THE NEXT GENERATION
Enjoy the same continuous flow of hot water as well as high performance in a new modern design with Ruud® RUTGH Series Super High Efficiency Condensing Tankless Water Heaters. Energy savings, continuous hot water and the industry’s most comprehensive 15-year warranty10 mean there’s never been a better time to go tankless.
Save Money
Save annually on energy costs over a standard 50-gallon gas residential tank water heater11
Save Space
Increase valuable usable space in your home with a single unit that’s up to 20% smaller and lighter12, and can be installed in more places with an available outdoor conversion kit
Save Water
Our exclusive water saving setting conserves water by reducing the amount of water flow at the tap until the set temperature is reached—no more wasted water while waiting for it to heat up13
Leak Detection and Prevention
Leakguard™ Leak Detection and Prevention system with auto shut-off detects leaks and shuts off the flow of water (Indoor Wi-Fi models only)
Earth-Friendly Efficiency
The RUTGH Series uses up to 34% less energy14 and improves air quality by reducing greenhouse gas NOx emissions by up to 65% for a cleaner environment15
Sustainability Standout®
Wi-Fi models qualify as Sustainability Standouts, which means they meet a stringent set of our company’s internally defined sustainability standards
Stay Safe
Exclusive Overheat Film Wrap shuts down the unit if the heat exchanger overheats for added safety in your home6
Smart Control with Built-in EcoNet® Wi-Fi Technology
Enjoy complete control of your water heater—from adjusting water temperature to tracking energy usage—all from a smart phone8 (select models only)
Temperature Control
Best-in-class turn down ratio keeps outlet water temperature close to the set point
Minimize Cold Water Bursts
Exclusive Hot Start Programming™ keeps the water heater in a ready state (burner does not completely shut off) for five minutes between back-to-back usage to minimize cold-water bursts1
Front View
Back View
Install Example
Install Example
Install Example
Install Example
Ruud CRUTGH Tankless
Premium Performance Even in Hard Water Regions
Ruud L-Series Super High Efficiency Condensing Tankless Water Heaters provide energy efficiency and high performance in a compact European design. Plus, they’re made to stand up to extreme hard water applications6—so you can count on having continuous hot water when you need it.
Patented Labyrinth Heat Exchanger
Aluminum block heat exchanger with integrated copper waterways ensures maximum heat transfer with minimal heat loss
Advanced Modulation and Redundancy
Enhances cascade system efficiency with multiple units operating at low fire versus one unit operating at high fire to satisfy demand
Reduces Carbon Footprint
Uses up to 32% less energy than a standard 50-gallon tank water heater to minimize your impact on the environment7
Improves Air Quality
65% reduction in NOx emissions compared to standard gas tank for a cleaner environment2
Universal Shared Platform Parts
Make it easy to diagnose and service with common parts for all Ruud L-Series units
Unmatched Streamlined Design
A total of four moving parts—fan, gas valve, damper and bypass valve—is unmatched in the industry for simplified servicing
Illuminated Touchscreen Control Panel
Provides operational status, troubleshooting information and allows setting adjustments
Versatile Venting Options
Provides installation flexibility with movable combustion air intake (left/right), ability to flex vent in existing B vent and 2″ inlet and exhaust with band connections
Easy Grip Connections
Extra-long pipe fittings with notched sides for easy gripping with a wrench
Premium Performance in Extreme Hard Water Regions
Cast aluminum heat exchanger protects copper waterways and minimizes lime formation
Industry’s Most Comprehensive Warranty
Enjoy peace of mind with a 15-year heat exchanger (replace entire unit not just heat exchanger) and 5-year parts warranty8
Save Money
Saves up to 33% per year in energy costs over a standard 50-gallon gas residential tank water heater
Front View
Back View
Inside View
Install Example
Install Example
Spec SheetDid You Know?
A Ruud SR-Series Tankless with Built-in Recirculation model could save
the average home enough water for about 200 loads of laundry, 200 dishwasher cycles,
plus 365 showers.
Enough Hot Water for All Your Daily Adventures
Family in town, dog needs a bath, laundry day? With continuous hot water, you can do it all and still have all the hot water you need for a nice, relaxing soak in the tub.
Knowledge is Power
With integrated WiFi in some tankless models and upgrade modules available for others, homeowners can adjust temperatures, check usage, receive alerts, program a schedule, update product settings and more. It’s all possible with the Ruud Tankless family and the EcoNet® App.8
Energy Usage Tracking
View weekly, monthly and yearly energy consumption reports
Setting Away and Home
Save energy on water heating costs while you’re away by pausing your recirculation schedules and resuming them when you return
Recirculation Pump Function
Remotely set and schedule the recirculation modes and your desired temperature
Remotely Start Pump
Easily check and adjust the water temperature and start or stop the recirculation pump as needed
Simple Scheduling
Schedule the recirculation pump to run, at the times you need it, directly from the app
NOTE: Appearance of EcoNet screens may vary.
Go Tankless
Ready to enjoy continuous hot water with a Ruud Tankless Water Heater?
1Based on comparison of Ruud tankless models having the Hot Start Programming™
against consumer reviews of leading competitor models. 2Based on continuous built-in
recirculation pump (SR model only, S models compatible with external pump accessory) compared to
average water loss of residential water piping. 3Based on comparison of Ruud S/SR models
against similar models from leading tankless brands. 4Based on Ruud testing of ½” gas
line with gas supply of 7” w.c.; Installation conditions vary; Consult the Ruud Use and Care
Manual, the Ruud Gas Piping Facts brochure (TK-GPF-12), the National Fuel Gas Code (NFPA 54, ANSI
Z223.1), and any other local gas codes when installing a Ruud Tankless Water Heater; Upgrade to gas
meter may be required. Refers to homes with existing gas supply. 5Proper sizing and
installation of equipment is critical to achieve optimal performance. Ask your contractor for
details or visit EnergyStar.gov. 6Based on AOC comparison of Ruud S/SR models against a
standard residential 50-gallon tank type model with like fuel type. Savings for liquid propane
models may be higher. 7Based on comparison of Ruud S/SR models against similar models
that do not have this film wrap. 8Wi-Fi broadband Internet connection and EcoNet App
required; Notifications are dependent on external factors beyond Ruud’s control. 9Based
on comparison of Ruud S/SR model against standard residential 50-gallon tank type model with like
fuel type, not to exceed 75,000 BTU. 10Based on comparison of Ruud RUTGH/RUTG Series
models against similar models from leading tankless competitors. 11Based on AOC
comparison of Ruud RUTGH Series /RUTG Series models against standard residential 50-gallon tank type
model with like fuel type. Savings for Liquid Propane models may be higher. 12Based on
comparison of Ruud RUTGH Series models against current Ruud condensing tankless models.
13Savings based on reduced water flow until set temperature is reached. Savings may be
higher for liquid propane models. Based on reduced water flow until set temperature is reached.
Exclusivity based on comparison against similar models from leading tankless brands.
14Based on reduction in energy usage of Ruud RUTGH Series models with a 0.93 UEF compared
to a standard residential atmospheric 50-gallon tank type model with a 0.61 UEF. Assumes like fuel
type, not to exceed 75,000 BTU. 15Based on comparison of Ruud RUTGH/RUTG Series model
against standard residential 50-gallon tank type model with like fuel type, not to exceed 75,000
BTU. 16Based on comparison of Ruud RUTG Series models against current Ruud non-condensing
tankless models. 17Based on reduction in energy usage of RUTG Series models with a 0.82
UEF compared to a standard residential 50-gallon tank type model with a 0.61 UEF. Assumes like fuel
type, not to exceed 75,000 BTU.
