Warranties 
Rebates 
Tax Credits 
Sustainability 
Careers 
Help 
Rheem® ThermaForce® Super High Efficiency Condensing Tankless Gas Water Heaters
MODEL RTGH-L199i
Residential
- 15-Year Heat Exchanger
- 5-Year Parts
- 1-Year Labor
Commercial
- 5-Year Heat Exchanger
- 5-Year Parts
- Up to .90 UEF
- Save up to 32% annually in energy costs
- Only 4 moving parts - Damper, Fan, Gas Valve, Mixing Valve
- Built-in Illuminated Touchscreen Control Panel
Models
SKU RTGH-L199i
Warranty Years 15
Model Rheem® ThermaForce® Super High Efficiency Condensing Tankless Gas Water Heaters
GPM 10.1
Fuel Natural Gas,Propane Gas
Depth 10"
Height 29"
Width 17"
UEF 0.9
High Efficiency Yes
Flexible Installation
- Moveable combustion air intake (left/ right) and ability to flex vent in existing B-vent
- Extra long pipe fittings with notched sides for easy gripping with wrench
- Only 4 moving parts – Fan, Mixing Valve, Gas Valve, and Damper
- Universal shared platform parts – Easily diagnose and service with common parts for all ThermaForce™ units
Key Features
- Innovative single pass Labyrinth Heat Exchanger with Integrated copper waterway ensures maximum heat transfer with minimal heat loss
- Wireless cascading using RF balances workload of each unit for longer life - No Wi-Fi required
- Built-in Illuminated Touchscreen Control Panel
- Stands up to extreme hard water
applications
Residential
- 15-Year Heat Exchanger
- 5-Year Parts
- 1-Year Labor
Commercial
- 5-Year Heat Exchanger
- 5-Year Parts
More Residential Rheem Products
Find additional documentation by viewing these related products.
Natural Gas
Propane Gas
Performance Platinum® Super High Efficiency Condensing Tankless Gas Water Heaters With Built-in Wi-Fi9-9.5 GPM
- .93 UEF Rated
- Built-in EcoNet® Wi-Fi Technology
- LeakGuard® Leak Detection and Prevention System
- Indoor/Outdoor model (Outdoor conversion kit sold separately)
Natural Gas
Rheem Performance Platinum® IKONIC® (SR Series) Super High Efficiency Condensing Tankless Gas Water Heaters with Built-in Recirculation & Wi-Fi8.4-11.2 GPM
- .96 UEF and ENERGY STAR® certified
- Save up to 36% in energy costs per year
- Rheem Exclusive! Hot Start Programming™ eliminates cold water bursts for continuous hot water
- Rheem Exclusive! Overheat Film Wrap shuts down the system if overheating occurs
- Industry Best! 1/2" side to side clearance
- Built-in recirculation pump
- Built-in EcoNet® wi-fi
- Industry's most comprehensive 15-year heat exchanger warranty
Natural Gas
Propane Gas
RTGH Series Super High Efficiency Condensing Tankless Gas Water Heater With Built-In Wi-Fi9.5-9.5 GPM
- .93 UEF Rated
- Built-in EcoNet® Wi-Fi Technology
- LeakGuard® Leak Detection and Prevention System
- Indoor/Outdoor model
Propane Gas
Natural Gas
RTGH Series Super High Efficiency Condensing Tankless Gas Water Heaters 6.6-9.5 GPM
- Up to .93 UEF
- Integrated Digital Display
- Indoor/Outdoor model
