Rheem RTGH 9.5 GPM 199,900 BTU Natural Gas Indoor Condensing Tankless Water Heater (.93 UEF)

Super High-Efficiency Tankless Water Heater Delivering 9.5 GPM

The Rheem RTGH95DVELN RTGH Series Super High-Efficiency Condensing Tankless Gas Water Heater provides up to 9.5 GPM of hot water at a 35°F temperature rise, with a maximum gas input of 199,900 BTU/h and a 0.93 Uniform Energy Factor (UEF). Designed for residential applications, the RTGH95DVELN features Rheem's Hot-Start Programming™ to keep the unit in a ready state between back-to-back uses and help minimize bursts of cold water.

Designed for indoor installation and retrofit applications, the RTGH95DVELN features an enhanced design that is up to 20% smaller and lighter, making one-person installations easier. With built-in Wi-Fi and EcoNet® connectivity, the unit also allows users to control the water heater from a compatible device. Its flexible venting options and compact design provide installation flexibility for residential applications.

Key Benefits

• Powerful 199,900 BTU/h Performance: Provides a maximum gas input of 199,900 BTU/h and flow rates up to 9.5 GPM at a 35°F temperature rise.
• Efficient 0.93 UEF: Offers a 0.93 Uniform Energy Factor to support efficient residential water heating.
• Built-in Wi-Fi and EcoNet®: Enables convenient control of the water heater from a compatible device.
• Hot-Start Programming™: Keeps the unit ready between back-to-back uses to help minimize bursts of cold water.
• Compact Indoor Design: Features an enhanced design that is up to 20% smaller and lighter, making handling and one-person installation easier.
• Flexible Venting: Supports 2-inch and 3-inch venting options with approved Schedule 40 PVC, CPVC, or polypropylene venting materials.

Understanding Tankless Water Heater Sizing

Tankless water heaters are sized by flow rate (GPM) and temperature rise. Flow rate refers to the amount of water the unit can produce per minute, while temperature rise refers to the difference between the incoming cold water temperature and the desired hot water temperature.

For the RTGH95DVELN, the maximum flow rate is 9.5 GPM at a 35°F temperature rise. At a 45°F temperature rise, the flow rate is 8.5 GPM, and at a 67°F temperature rise, the flow rate is 5.7 GPM.

How to Calculate Temperature Rise

To determine temperature rise, subtract the incoming water temperature from your desired hot water temperature. For example, if the incoming water temperature is 55°F and the desired water temperature is 120°F:

120°F - 55°F = 65°F Temperature Rise

Refer to the Water Flow (GPM) chart below to compare estimated flow rates at different temperature rises and determine whether this model can meet your household's hot water demand. Actual flow rates vary depending on incoming water temperature and the selected water heater temperature.

Energy Efficiency & Performance

• Uniform Energy Factor (UEF): 0.93
• Maximum Flow Rate: 9.5 GPM at a 35°F temperature rise
• Gas Input: 11,000 up to 199,900 BTU/h
• Activation Flow Rate: 0.4 GPM (0.26 GPM minimum continuous flow)

Actual hot water flow depends on the incoming water temperature and the required temperature rise.

Warranty

Rheem provides a 15-year heat exchanger warranty, 5-year parts warranty, and 1-year labor warranty for single-family residential installations.

Important Warranty Conditions:

• Residential Use: Standard residential installations qualify for full coverage. Commercial installations receive 5-year heat exchanger and parts coverage.
• Recirculation Systems: Controlled recirculation qualifies for full residential coverage. Uncontrolled, continuously operating recirculation reduces heat exchanger and parts coverage to 3 years.
• Operating Hours: All warranty coverage ends after 12,000 hours of operation.
• Installation & Maintenance: Damage from improper installation, mineral buildup, scale, or water quality outside Rheem's specified limits is excluded.
• Labor Coverage: Covers reasonable labor costs for covered repairs during the first year when performed by a licensed, qualified contractor trained on Rheem tankless water heaters.
• Ownership: Warranty applies only to the original owner at the original installation location and is nontransferable.

Warranty coverage begins on the documented installation date. Without documentation, coverage begins 90 days after manufacture. Product registration does not extend the warranty period.

Review Rheem's official Limited Warranty Certificate for complete terms, exclusions, and coverage details.

What's Included

• Rheem RTGH-95DVELN-3 Condensing Indoor Tankless Water Heater
• Hanging mounting bracket
• Bird screens
• Factory-installed power cord
• Built-in digital display

Requirements & Considerations

• Fuel Type: Configured for Natural Gas. (Liquid Propane RTGH-95DVELP-3 model available separately).
• Installation Type: Indoor installation. (Outdoor conversion kit RTGH-X is sold separately if exterior mounting is desired).
• Venting: Uses 2-inch or 3-inch Schedule 40 PVC, CPVC, or polypropylene pipe. Supports up to 60 feet of 2-inch pipe or 150 feet of 3-inch pipe.
• Gas, Water & Condensate Connections: 3/4-inch NPT gas, hot water, and cold water connections, plus a 1/2-inch NPT condensate drain connection.
• Electrical Requirements: 120V, 60Hz power supply (85W normal operation, 132W anti-freeze protection draw).
• Clearances: Maintain 12 inches top/bottom, 1/2 inch sides, 1/2 inch front, and 0 inches back clearance for safe operation and service access.