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

High-Efficiency Super Condensing Indoor Natural Gas Tankless Water Heater Delivering 9.5 GPM

The Rheem RTGH Series RTGH-95DVLN-3 is a super high-efficiency, condensing indoor natural gas tankless water heater engineered to supply continuous on-demand hot water with a maximum gas input of 199,900 BTU/h, a maximum flow rate of 9.5 GPM at a 35°F temperature rise, and a 0.93 Uniform Energy Factor (UEF).

Designed for demanding indoor applications, this unit features primary copper and secondary stainless steel heat exchangers to maximize heat transfer. It supports Schedule 40 PVC, CPVC, or polypropylene vent runs up to 60 feet with 2-inch venting or 150 feet with 3-inch venting, and boasts a compact chassis up to 20% smaller and lighter than previous models to simplify one-person installation.

Key Benefits

• High Heating Capacity: Delivers up to 199,900 BTU/h maximum gas input to satisfy high-demand residential hot water requirements.
• On-Demand Hot Water: Provides up to 9.5 GPM at a 35°F temperature rise to easily power multiple fixtures at once. Actual flow rate varies with incoming water temperature and selected output temperature.
• Super High-Efficiency Performance: Features an impressive 0.93 Uniform Energy Factor (UEF) for substantial energy savings and optimal operating efficiency.
• Dual Heat Exchangers: Durable primary copper and secondary stainless steel heat exchangers capture extra heat from exhaust gases for maximum performance and longevity.
• Hot-Start Programming™: Keeps the unit in a ready state between back-to-back hot water uses to minimize cold water bursts.
• Flexible PVC Venting Options: Compatible with Schedule 40 PVC, CPVC, and polypropylene venting materials, allowing vent runs up to 60 feet with 2-inch pipe or 150 feet with 3-inch pipe.
• Compact & Lightweight Profile: Streamlined chassis is up to 20% smaller and lighter to make handling and wall mounting easier for single installers.
• Retrofit-Friendly Clearances: Industry-best 1/2-inch side-to-side clearance allows for safe installation in restricted indoor utility spaces.
• 1/2-Inch Gas-Line Compatibility: Accommodates 1/2-inch gas lines where permitted by local code, simplifying replacement projects.
• Ultra Low NOx Compliance: Meets strict 14 ng/J NOx requirements and is SCAQMD Rule 1146.2 compliant.

Understanding Tankless Water Heater Sizing

The RTGH-95DVLN-3 provides a maximum flow rate of 9.5 GPM at a 35°F temperature rise. At a 45°F temperature rise, the maximum flow rate is 8.5 GPM, while a 67°F temperature rise provides a maximum flow rate of 5.7 GPM.

Flow capacity varies based on incoming groundwater temperature and the desired hot water temperature. The unit's flow-rate capacity ranges from 3.8 to 9.5 GPM based on standard temperature rises from 35°F to 100°F.

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 the Rheem RTGH-95DVLN-3 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-95DVLN-3 Condensing Indoor Tankless Water Heater
• Mounting and Spare Parts Kit
• Vent Screens
• 6-Foot, 120V, 3-Prong Power Cord
• Use and Care Manual

Requirements & Considerations

• Fuel Type: Configured for Natural Gas. (Liquid Propane RTGH-95DVLP-3 model available separately).
• Installation Type: Indoor installation. (Outdoor conversion kit RTGH-X 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 line.
• 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.