Rheem - RTG-70XLN-3 - Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater
Spec Sheet
Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty
Rheem RTG is a series of ultra low NOx, mid-efficiency tankless gas water heaters designed for continuous hot water
Efficiency
- .82 UEF -US
- With all -copper heat exchanger
- Intelligent electronic controls designed to increase energy efficiency and safety
Performance
- Exclusive! Water savings setting –upon activation, this setting can save homeowners up to 1,100 gallon of water per year 1 by decreasing the flow of water through the pipes until the temperature reaches the heater’s set temperature
- Low flow fixture compatible – Industry first minimum flow rate of .26 GPM and minimum activation flow rate of .40G PM ensures the user will receive hot water even in low demand situations
- Recirculation Pump Kit-Ready – Quickly pairs with our Recirculation Pump kit to provide instantaneous hot water at the tap2
Easy Installation and Service
- 1/2" Gas line compatibility on every model
- Exclusive! Maintenance Notice Setting alerts homeowner – flashing a warning code to call for service check
- Self-diagnostic system for easy installation and service
- Digital display shows temperature setting and maintenance codes
- 3"/5" concentric vent system with Integrated condensate collector
- Connects to Metal Fab. Inc., 3"/5"concentric venting without an adapter
Technology
- Hot-start programming helps minimize fluctuation in water temperature, referred to as “cold water sandwich”, during periods of frequent on/off operation
- Exclusive! Guardian OFW™ overheat film wrap
- EZ-Link™ cable available for higher demand applications to connect two tankless units to operate as one
- Manifold up to six units with an optional MIC-6 manifold control board
- Manifold up to 20 units with the optional MIC-185 plus the MICS-180 manifold control assembly
High Altitude Compliant
- High-altitude capability – up to 8,400 ft. elevation above sea level3
Low Emissions
Environmentally friendly ultra low NOx burner meets SCAQMD rule 1146.2 requirements
Plus…
- Digital remote control and 10 ft. of thermostat wire included
- Supplied with a 120-volt power cord (indoor models only)
- Freeze protection to -30°F
- .82 UEF -US
- With all -copper heat exchanger
- 11,000 - 160,000 BTU max.
- 6.4 gal./min. at 35° F rise max.
- 5.6 gal./min. at 45° F rise max.
| Fuel Type | Natural Gas |
| EF | 0.82 |
| Install Location | Outdoor |
| Primary Warranty | 12 Yrs |
| Number Of Back To Back Showers | ? |
| Max GPM | 7 |
| Number Of Bathrooms | 3 |
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Rheem - RTG-70XLN-3 - Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater
Rheem - RTG-70XLN-3 - Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater
Spec Sheet
Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty
Rheem RTG is a series of ultra low NOx, mid-efficiency tankless gas water heaters designed for continuous hot water
Efficiency
- .82 UEF -US
- With all -copper heat exchanger
- Intelligent electronic controls designed to increase energy efficiency and safety
Performance
- Exclusive! Water savings setting –upon activation, this setting can save homeowners up to 1,100 gallon of water per year 1 by decreasing the flow of water through the pipes until the temperature reaches the heater’s set temperature
- Low flow fixture compatible – Industry first minimum flow rate of .26 GPM and minimum activation flow rate of .40G PM ensures the user will receive hot water even in low demand situations
- Recirculation Pump Kit-Ready – Quickly pairs with our Recirculation Pump kit to provide instantaneous hot water at the tap2
Easy Installation and Service
- 1/2" Gas line compatibility on every model
- Exclusive! Maintenance Notice Setting alerts homeowner – flashing a warning code to call for service check
- Self-diagnostic system for easy installation and service
- Digital display shows temperature setting and maintenance codes
- 3"/5" concentric vent system with Integrated condensate collector
- Connects to Metal Fab. Inc., 3"/5"concentric venting without an adapter
Technology
- Hot-start programming helps minimize fluctuation in water temperature, referred to as “cold water sandwich”, during periods of frequent on/off operation
- Exclusive! Guardian OFW™ overheat film wrap
- EZ-Link™ cable available for higher demand applications to connect two tankless units to operate as one
- Manifold up to six units with an optional MIC-6 manifold control board
- Manifold up to 20 units with the optional MIC-185 plus the MICS-180 manifold control assembly
High Altitude Compliant
- High-altitude capability – up to 8,400 ft. elevation above sea level3
Low Emissions
Environmentally friendly ultra low NOx burner meets SCAQMD rule 1146.2 requirements
Plus…
- Digital remote control and 10 ft. of thermostat wire included
- Supplied with a 120-volt power cord (indoor models only)
- Freeze protection to -30°F
- .82 UEF -US
- With all -copper heat exchanger
- 11,000 - 160,000 BTU max.
- 6.4 gal./min. at 35° F rise max.
- 5.6 gal./min. at 45° F rise max.
| Fuel Type | Natural Gas |
| EF | 0.82 |
| Install Location | Outdoor |
| Primary Warranty | 12 Yrs |
| Number Of Back To Back Showers | ? |
| Max GPM | 7 |
| Number Of Bathrooms | 3 |
Original: $819.75
-65%$819.75
$286.91Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Spec Sheet
Mid Efficiency 70 Direct Vent Outdoor Natural Gas EcoNet Enabled Tankless Water Heater with 12 Year Limited Warranty
Rheem RTG is a series of ultra low NOx, mid-efficiency tankless gas water heaters designed for continuous hot water
Efficiency
- .82 UEF -US
- With all -copper heat exchanger
- Intelligent electronic controls designed to increase energy efficiency and safety
Performance
- Exclusive! Water savings setting –upon activation, this setting can save homeowners up to 1,100 gallon of water per year 1 by decreasing the flow of water through the pipes until the temperature reaches the heater’s set temperature
- Low flow fixture compatible – Industry first minimum flow rate of .26 GPM and minimum activation flow rate of .40G PM ensures the user will receive hot water even in low demand situations
- Recirculation Pump Kit-Ready – Quickly pairs with our Recirculation Pump kit to provide instantaneous hot water at the tap2
Easy Installation and Service
- 1/2" Gas line compatibility on every model
- Exclusive! Maintenance Notice Setting alerts homeowner – flashing a warning code to call for service check
- Self-diagnostic system for easy installation and service
- Digital display shows temperature setting and maintenance codes
- 3"/5" concentric vent system with Integrated condensate collector
- Connects to Metal Fab. Inc., 3"/5"concentric venting without an adapter
Technology
- Hot-start programming helps minimize fluctuation in water temperature, referred to as “cold water sandwich”, during periods of frequent on/off operation
- Exclusive! Guardian OFW™ overheat film wrap
- EZ-Link™ cable available for higher demand applications to connect two tankless units to operate as one
- Manifold up to six units with an optional MIC-6 manifold control board
- Manifold up to 20 units with the optional MIC-185 plus the MICS-180 manifold control assembly
High Altitude Compliant
- High-altitude capability – up to 8,400 ft. elevation above sea level3
Low Emissions
Environmentally friendly ultra low NOx burner meets SCAQMD rule 1146.2 requirements
Plus…
- Digital remote control and 10 ft. of thermostat wire included
- Supplied with a 120-volt power cord (indoor models only)
- Freeze protection to -30°F
- .82 UEF -US
- With all -copper heat exchanger
- 11,000 - 160,000 BTU max.
- 6.4 gal./min. at 35° F rise max.
- 5.6 gal./min. at 45° F rise max.
| Fuel Type | Natural Gas |
| EF | 0.82 |
| Install Location | Outdoor |
| Primary Warranty | 12 Yrs |
| Number Of Back To Back Showers | ? |
| Max GPM | 7 |
| Number Of Bathrooms | 3 |












