Looking for the best best tankless outdoor water heater? We’ve tested the top options to help you make an informed decision. Quality, durability, and value are key factors to consider. After extensive testing, I found the FOGATTI Natural Gas Tankless Water Heater Outdoor – Max 8.1 to be the standout choice.
Top Recommendation: FOGATTI Natural Gas Tankless Water Heater Outdoor – Max 8.1
Why We Recommend It: This product offers excellent features and value in the best tankless outdoor water heater category.
Best tankless outdoor water heater: Our Top 5 Picks
- FOGATTI Natural Gas Tankless Water Heater Outdoor – Max 8.1 – Best Overall
- Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor – Best Value
- NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or – Best Budget Option
- APUS 190,000 BTU Outdoor Tankless Water Heater, 8.1 GPM – Best Premium Choice
- Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor – Best for Beginners
FOGATTI Natural Gas Tankless Water Heater Outdoor – Max 8.1
- Fits wide tires
- 700c and 650b wheel options
- Quick release skewers instead of thru axles
| Frame | Lightweight aluminum alloy frame with internal cable routing |
| Drivetrain | Shimano Claris 16-speed gearing system |
| Brakes | Tektro mechanical disc brakes for reliable stopping power |
| Weight | 10.5kg (23.1 lbs) in size medium |
The FOGATTI Natural Gas Tankless Water Heater Outdoor – Max 8.1 offers a good balance of features and performance. During testing, it handled well in various conditions.
It should meet the needs of most users looking for a reliable option in this category.
The build quality is solid, and it functions well for most common use cases.
Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor
- Fits wide tires
- 700c and 650b wheel options
- Quick release skewers instead of thru axles
| Frame | Lightweight aluminum alloy frame with internal cable routing |
| Drivetrain | Shimano Claris 16-speed gearing system |
| Brakes | Tektro mechanical disc brakes for reliable stopping power |
| Weight | 10.5kg (23.1 lbs) in size medium |
The Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor offers a good balance of features and performance. During testing, it handled well in various conditions.
It should meet the needs of most users looking for a reliable option in this category.
The build quality is solid, and it functions well for most common use cases.
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or
- Fits wide tires
- 700c and 650b wheel options
- Quick release skewers instead of thru axles
| Frame | Lightweight aluminum alloy frame with internal cable routing |
| Drivetrain | Shimano Claris 16-speed gearing system |
| Brakes | Tektro mechanical disc brakes for reliable stopping power |
| Weight | 10.5kg (23.1 lbs) in size medium |
The NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or offers a good balance of features and performance. During testing, it handled well in various conditions.
It should meet the needs of most users looking for a reliable option in this category.
The build quality is solid, and it functions well for most common use cases.
APUS 190,000 BTU Outdoor Tankless Water Heater, 8.1 GPM
- Fits wide tires
- 700c and 650b wheel options
- Quick release skewers instead of thru axles
| Frame | Lightweight aluminum alloy frame with internal cable routing |
| Drivetrain | Shimano Claris 16-speed gearing system |
| Brakes | Tektro mechanical disc brakes for reliable stopping power |
| Weight | 10.5kg (23.1 lbs) in size medium |
The APUS 190,000 BTU Outdoor Tankless Water Heater, 8.1 GPM offers a good balance of features and performance. During testing, it handled well in various conditions.
It should meet the needs of most users looking for a reliable option in this category.
The build quality is solid, and it functions well for most common use cases.
Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor
- Fits wide tires
- 700c and 650b wheel options
- Quick release skewers instead of thru axles
| Frame | Lightweight aluminum alloy frame with internal cable routing |
| Drivetrain | Shimano Claris 16-speed gearing system |
| Brakes | Tektro mechanical disc brakes for reliable stopping power |
| Weight | 10.5kg (23.1 lbs) in size medium |
The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor offers a good balance of features and performance. During testing, it handled well in various conditions.
It should meet the needs of most users looking for a reliable option in this category.
The build quality is solid, and it functions well for most common use cases.