INNOVATIVE TECHNOLOGY
Patented labyrinth heat exchanger provides up to a 96% AFUE rating for combi boilers and boilers, and up to .90 UEF for tankless
EFFICIENT WHOLE HOME HEATING
DOMESTIC HOT WATER & HYDRONIC SPACE HEATING
The new Ruud® L-Series Super High Efficiency Condensing platform makes it easier than ever to enjoy whole home heating. Offering both space heating and domestic hot water, this platform includes a combi boiler, boiler and tankless water heater designed with innovative technology and delivering ultimate serviceability.
Available in select markets.
Earth-Friendly OPERATION
Improves air quality by reducing greenhouse gas NOx emissions by up to 75% for combi boilers and boilers1, and up to 65% for tankless for a cleaner environment2
Improves air quality by reducing greenhouse gas NOx emissions by up to 75% for combi boilers and boilers1, and up to 65% for tankless for a cleaner environment2
WIRELESS CASCADING
Connect up to eight units to boost performance and save on costs and installation time (Wi-Fi not required)
Connect up to eight units to boost performance and save on costs and installation time (Wi-Fi not required)
Ultimate Serviceability
A total of four or five moving parts, unmatched in the industry, simplifies servicing
A total of four or five moving parts, unmatched in the industry, simplifies servicing
Choose Category
Front View
Back View
Inside View
Install Example
Install Example
Front View
Back View
Inside View
Front View
Back View
Inside View
Install Example
Install Example
Combi Boiler
2 in 1 Design for Space and Water Heating
Delivering both space heating and domestic hot water in a compact, sleek European design, the Ruud® L-Series Super High Efficiency Condensing Combi Boiler makes it easy to heat your entire home and enjoy continuous hot water.
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 less energy compared to standard units
Improves Air Quality
Combi boilers reduce NOx emissions up to 75% compared to standard efficiency boilers1
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 five moving parts—fan, gas valve, damper, boiler pump 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
Built-in High Efficiency Variable Speed Boiler Pump
Uses less electricity than a standard pump
Outdoor Reset Technology
Adjusts the boiler supply temperature automatically based on outdoor temperature fluctuations
ENERGY STAR® Certified
Up to 96% AFUE and ASME-rated3 (excludes 160K model)
Saves Space and Money
With one appliance instead of two (boiler and water heater)
U.S. Market Exclusive – Condensing Combi-to-Combi Cascading
The only condensing combi that can be cascaded for both space heating and domestic hot water
Front View
Back View
Inside View
Install Example
Install ExampleIntroducing Ruud L-Series Video
Spec Sheet
Condensing Boilers Offer Efficient Space Heating
Making it easy to heat your entire home, the Ruud L-Series Super High Efficiency Condensing Boiler delivers hot water for hydronic heating applications like radiant floors, baseboards, air handlers and more. High performance and reliable temperature control mean you can relax in consistent comfort.
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 less energy compared to standard units
Improves Air Quality
Reduces NOx emissions up to 75% compared to standard efficiency boilers1
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 boiler pump—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
Built-in High Efficiency Variable Speed Boiler Pump
Uses less electricity than a standard pump
Outdoor Reset Technology
Adjusts the boiler supply temperature automatically based on outdoor temperature fluctuations
ENERGY STAR® Certified
Up to 96% AFUE and ASME-rated3
Front View
Back View
Inside View
Install Example
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 ExampleDid You Know?
The Ruud L-Series Combi Boiler is the only condensing combi boiler product that can be cascaded for both space heating and domestic hot water.4
A Whole Home Heating Solution
Make the most of your home comfort with the Ruud L-Series platform, designed to provide super-high efficiency condensing space heating and domestic hot water, saving you space and energy.
We focus on innovating with intent, engineering solutions with lifetime sustainability in mind—from material selection to smart features to responsibile recycling.
View SustainabilityEnjoy High-efficiency Space Heating, Water Heating or Both
Bring home the comfort and savings of the Ruud L-Series Platform.
Find a Pro
1Based on comparison of Ruud L-Series combi and boiler against a minimum efficiency boiler with like fuel type. 2Based on comparison of Ruud L-Series tankless against a standard residential 50-gallon tank type model with like fuel type not to exceed 75,000 BTU. 3Based on comparison of Ruud L-Series combi or boiler against minimum efficiency heater. 4Based on comparison of similar models from leading competitors in the North American market. 5Eligibility varies; contact your state or local government to determine availability in your area. 6Claim based on hard water condition testing, up to 400ppm (23 gpg); Routine maintenance required. 7Based on reduction in energy usage of Ruud L-Series tankless with a 0.90 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. 8Based on comparison of Ruud L-Series tankless model against similar models from leading tankless competitors. 9Based on results of hard water condition testing performed on Ruud L-Series tankless and five leading competitor units at standard temperature and pressure; Routine maintenance required; Life defined as the 15-year length of the provided limited warranty.
