Ruud RUTGH-84DVLN-2 Condensing Tankless Water Heater

Product Description

The RUUD RUTGH-84DVLN-2 is a high-efficiency condensing tankless gas water heater rated at 180,000 BTU/h with a uniform energy factor (UEF) of 0.93. It delivers up to 8.4 gallons per minute (GPM) of continuous hot water and runs on natural gas with a direct vent configuration for indoor installation. The unit operates on 120 volts and features a stainless steel condensing heat exchanger built for long-term durability. Lead-free construction meets current potable water standards. Licensed plumbers install this unit in residential and light commercial applications where on-demand hot water and reduced energy consumption are both priorities.

The RUTGH-84DVLN-2 is designed for indoor installation using direct vent piping in 2-inch, 3-inch, or 4-inch diameter configurations. It suits residential builds and retrofits where storage-tank water heaters are being replaced with on-demand systems. A minimum flow activation rate of 0.40 GPM and a minimum flow rate of 0.26 GPM make it functional in low-demand situations. The unit is also recirculation pump kit-ready, supporting faster hot water delivery at the tap. Hot Start Programming keeps the unit in a ready-fire state to reduce cold water bursts during back-to-back draw cycles, a common issue in multi-fixture residential settings.

Key Features

• 180,000 BTU/h input rating with 0.93 UEF for condensing-class efficiency
• 8.4 GPM maximum flow rate for continuous hot water delivery
• Stainless steel condensing heat exchanger for corrosion resistance and longevity
• Direct vent compatible with 2-inch, 3-inch, or 4-inch vent pipe
• Recirculation pump kit-ready for reduced wait times and water savings
• Water Savings Setting and Hot Start Programming reduce water waste and cold-water interruptions
• ENERGY STAR rated; meets AIA, AHRI, CSA, and CUPC standards

Compatibility

The RUTGH-84DVLN-2 is part of the RUUD RUTGH series of condensing tankless gas water heaters. It accepts 1/2-inch inlet and 1/2-inch outlet water connections and is compatible with direct vent pipe diameters of 2 inches, 3 inches, or 4 inches. It is recirculation pump kit-ready for systems requiring a dedicated recirculation loop.

Installation Notes

Installation must be performed by a licensed plumber in accordance with local plumbing codes, the International Plumbing Code (IPC), and the manufacturer's installation instructions. Shut off the gas supply and water supply lines and disconnect electrical power before beginning any service or installation work. Vent piping must be sized and routed per the appliance venting requirements and local mechanical codes. Do not operate the unit below the minimum flow or temperature rating specified on the unit label.

Technical Specifications

• Gas Input Rating: 180,000 BTU/h
• Flow Rate (Max): 8.4 GPM
• Uniform Energy Factor (UEF): 0.93
• Gas Type: Natural Gas
• Voltage: 120 volts
• Venting Type: Direct Vent
• Vent Size: 2 inches, 3 inches, or 4 inches
• Inlet/Outlet Connection: 1/2 inch x 1/2 inch
• Temperature Range: 85 to 140 degrees F
• Width: 18.5 inches
• Depth: 9.75 inches
• Height: 27.5 inches
• Weight: 77 pounds
• Heat Exchanger Material: Stainless Steel
• Lead-Free: Yes
• Installation Type: Indoor
• Warranty: 12 years residential / 5 years commercial (heat exchanger)
• Certifications: AIA, AHRI, CSA, CUPC, ENERGY STAR

Standard Information

• Brand: RUUD
• Manufacturer Part Number: RUTGH-84DVLN-2