- Listed when
- A gas tankless water heater built for outdoor installation.
- Sorted by
- Input (BTU/h) (highest first)
- In the list
- The top 8 of 28 products in our catalog that meet the rule.
Rheem RTG-95XLN-3 199,900 BTU Natural Gas Outdoor Tankless Water Heater
199,900 BTU/h, about 4.4 GPM at a 70°F winter rise, 9.5 GPM stated maximum; outdoor gas tankless.
Rheem RTG-95XLP-3 199,900 BTU Propane Outdoor Tankless Water Heater
199,900 BTU/h, about 4.4 GPM at a 70°F winter rise, 9.5 GPM stated maximum; outdoor gas tankless.
Camplux WA686M-NG 199,000 BTU Natural Gas Outdoor Tankless Water Heater
199,000 BTU/h, about 4.4 GPM at a 70°F winter rise, 8.4 GPM stated maximum; outdoor gas tankless.
Camplux WA686LP 199,000 BTU Propane Outdoor Tankless Water Heater
199,000 BTU/h, about 4.4 GPM at a 70°F winter rise, 8.4 GPM stated maximum; outdoor gas tankless.
Ranein RHO19K-NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater
190,000 BTU/h, about 4.2 GPM at a 70°F winter rise, 8.5 GPM stated maximum; outdoor gas tankless.
Ranein RHO19K-LPG 190,000 BTU Propane Outdoor Tankless Water Heater
190,000 BTU/h, about 4.2 GPM at a 70°F winter rise, 8.5 GPM stated maximum; outdoor gas tankless.
APUS AP-AWH-W26NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater
190,000 BTU/h, about 4.2 GPM at a 70°F winter rise, 8.1 GPM stated maximum; outdoor gas tankless.
APUS AP-AWH-W26LPG 190,000 BTU Propane Outdoor Tankless Water Heater
190,000 BTU/h, about 4.2 GPM at a 70°F winter rise, 8.1 GPM stated maximum; outdoor gas tankless.
How to choose between them
Outdoor units hang on an exterior wall and vent straight from the cabinet, which saves the vent run and the wall penetration.
Where winters freeze, check the maker's freeze protection and protect the water and gas connections.
Rankings follow the rule and order stated above, using makers' published specifications and listed prices. How we research · Disclosure