Space Heating AND
Water Heating,
Combined
One Efficient Unit,
Two Comfort Solutions
The new Ruud® UltraTM Series High Efficiency Combination Boiler offers both space heating and domestic water heating in one unit. So whether you need the living room to be extra cozy for movie night or you’re ready for a hot, relaxing bath, the Combi Boiler has you covered.
High Efficiency
A 95% AFUE rating means energy savings and potential rebates
Two In One
Enjoy both space heating and domestic hot water in one durable unit, from a brand you trust
Saves Energy
It only produces domestic hot water when you need it, so you save energy and money
Saves Space
A single combi boiler frees up valuable space by replacing your boiler and tank water heater
How It Works
The Combi Boiler provides space heating and domestic hot water in two separate loops.
Ruud Combi Boiler Features & Benefits
-
95% AFUE
Delivers 95 BTUs of heat for every 100 BTUs of gas input, qualifying some customers for local and/or utility rebates
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Lower Installation Costs
Installs with 2″ and 3″ Schedule 40 PVC venting, which is easier to work with and lower cost than stainless steel, saving you money and time
-
Plate Heat Exchanger
Transfers heat generated in the space heating process to the domestic water flow for continuous hot water
-
Separate Loops
Keep water for space heating and domestic hot water in two separate loops
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Outdoor Reset Sensor
Tracks outdoor temperatures and overrides the heating set point as needed to keep the home comfortable when weather changes
-
Built-In Three-Speed Pump
Offers convenience and performance
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Auto-Boost
Kicks in to provide extra heat if the thermostat set point has not been achieved in a reasonable time1
-
Built-in Auto Feeder
Maintains hydronic loop pressure automatically between 12–30 PSI
-
Max Vent Lengths of 100′ for 3″, 50′ for 2″
Means more flexible and versatile installation options2
-
Vent With Room Air
Saves money and time on installation3
More Spec Info
| Ruud Model Number | RUCBH-199DVLN RUCBH-199DVLP |
RUCBH-180DVLN RUCBH-180DVLP |
|
|---|---|---|---|
| Gas Input Rate for Space Heating4 |
MAX | 120,000 BTU/h | 100,000 BTU/h |
| MIN | 18,000 BTU/h | 18,000 BTU/h | |
| Gas Input Rate for Domestic Hot Water (DHW) |
MAX | 199,000 BTU/h | 180,000 BTU/h |
| MIN | 18,000 BTU/h | 18,000 BTU/h | |
| AFUE | 95% | 95% | |
| Turndown Ratio (Space Heating) | 6.7:1 | 5.6:1 | |
| Turndown Ratio (DHW) | 11:1 | 10:1 | |
| Continuous Flow Rate (DHW) |
MAX | 9.9 GPM | 9.0 GPM |
| 45°F Rise | 7.7 GPM | 7.0 GPM | |
| 77°F Rise | 4.5 GPM | 4.1 GPM | |
| Number of Bathrooms5 | 2–2.5 | 2 | |
| Temp. Range | Space Heating | 100–180°F | |
| DHW | 90–140°F | ||
| Type | Indoor Direct Vent | ||
| Flue System | Sealed Combustion Direct Vent or Room Air Intake | ||
| Ignition System | Direct Electronic Ignition / Automatic Flame Sensing | ||
| Burner System | Premixed Metal Fiber Burner | ||
| Gas Valve System | Air Ratio Valve | ||
| Minimum Activation Flow Rate | 0.5 GPM | ||
| Minimum Continuous Flow Rate | 0.4 GPM | ||
| Internal Pipe Material | STS 304, Copper Tubing (Primary and Secondary) | ||
| Water Holding Capacity | Under 2 Gallons | ||
| Water Pressure6 | MAX | DHW 150 PSI / Heating 30 PSI | |
| MIN | DHW 15 PSI / Heating 12 PSI | ||
| Gas Pressure | Nat. Gas | 3.5″ WC to 10.5″ WC | |
| LP Gas | 8.0″ WC to 14.0″ WC | ||
| Materials | Casing | Cold Rolled Carbon Steel | |
| Heat Exchanger | STS 304 Stainless Steel | ||
| Safety Devices | Flame Sensor, Overheat Cut Off Limit Switch, Gas Leak Detector, Water Leak Detector, Exhaust Thermistor, Pressure Sensor, Heating Supply Thermistor |
||
| Warranty | Residential – 10-Year Heat Exchanger, 5-Year Parts, 1-Year Labor |
||
Compatible with
Hydronic Air Handlers
The Combi Boiler works with hydronic air handlers, offering the ability to integrate space heating and domestic water heating systems to maximize energy efficiency and minimize energy costs.
Learn More
More Information
Download Brochure Product Specifications Manifold Feature Sheet
Enjoy Space Heating and Water Heating in One
Bring home the comfort and savings of the Ruud Combi Boiler.
1Auto Boost Feature requires installation of outdoor reset sensor. 2Up to 50′ @ 2″ and 100′ @ 3″; Maximum equivalent venting lengths: see Installation Instructions for additional details. 3Follow the National Fuel Gas Code (ANSI Z223.1 / NFPA 54). 4Gas input (BTU/h) de-rates at higher than sea level installations. 5Individual results may vary based on temperature rise demands. 6DHW water pressure must be greater than the heating system water pressure.
