best outdoor natural gas tankless water heater that will surprise you
Budget models disappoint—but Rheem RTG-70XLN-3 delivers unmatched efficiency.
When it comes to natural gas tankless water heaters, efficiency and reliability are essential. The **Rheem RTG-70XLN-3** offers impressive 7.0 GPM flow rate, while the **Rinnai V53DeN** excels with its compact design and 5.3 GPM performance.
For those seeking outdoor installation, the Rheem’s high-efficiency model stands out with its durability and weather-resistant features.
Below, we analyze budget, lifespan, and real-user feedback.


Rheem High Efficiency Outdoor Tankless Water Heater
Tired of running out of hot water during showers or while doing laundry? The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater fixes it with its impressive 7.0 GPM flow rate, ensuring you have continuous hot water for multiple applications at once.
Why It Works
- Continuous hot water means you can run the dishwasher and take a shower simultaneously without worrying about temperature drops.
- Energy efficiency saves on utility bills, as the heater only activates when hot water is needed.
- Water-saving setting helps conserve up to 1,100 gallons of water annually, making it eco-friendly.
- Hot-start programming eliminates cold-water bursts by keeping the system ready, providing a comfortable experience every time.
- Compact design saves space, as it is 19% smaller and 22% lighter than previous models, making installation easier.
Trade-offs
- Premium price compared to traditional water heaters, but the long-term savings on energy and water bills make it a worthwhile investment.
Overall, the Rheem RTG-70XLN-3 is worth it for frequent users who demand reliable hot water and value energy efficiency. Its features effectively address common hot water issues, making it a smart choice for any household.
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Natural Gas Tankless Water Heater 5.26GPM
Tired of running out of hot water during your showers? The Natural Gas Tankless Water Heater solves this problem with its impressive 5.26 GPM flow rate, providing instant hot water on demand. Say goodbye to the inconvenience of traditional water heaters that leave you shivering mid-shower.
Why It Works
- Steady temperature control ensures a consistent hot water supply, eliminating sudden temperature drops.
- Multiple safety protections, including flame failure and overheating protection, keep your family safe while using hot water.
- Durable stainless steel body resists corrosion, ensuring long-lasting performance even in harsh conditions.
- LED smart digital display allows for easy temperature adjustments, giving you precise control over your hot water needs.
Trade-offs
- Premium price compared to traditional heaters, but the energy savings and longevity make it a worthwhile investment.
- Outdoor installation only may not suit every home, requiring adequate space and proper setup.
Overall, the Natural Gas Tankless Water Heater is worth it for frequent users who prioritize efficiency, safety, and consistent hot water supply. Its advanced features and durable design make it a reliable choice for any household looking to upgrade their hot water system.
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Rinnai V53DeN Outdoor Tankless Water Heater
Tired of running out of hot water during your family’s morning rush? The Rinnai V53DeN Natural Gas Tankless Water Heater fixes it with its impressive 5.3 GPM flow rate, ensuring you have unlimited hot water for multiple appliances simultaneously.
Why It Works
- Energy efficiency allows you to save on utility bills by heating water only when needed, making it an eco-friendly choice.
- Compact design fits easily into tight spaces, perfect for modern homes without sacrificing performance.
- 10-year warranty on the heat exchanger provides peace of mind, ensuring long-lasting durability and reducing worries about frequent repairs.
Trade-offs
- Professional installation is recommended, which may add to the initial cost but guarantees safe and optimal operation.
- Premium price compared to traditional water heaters, but it offers significant savings over time with its efficiency and longevity.
Overall, the Rinnai V53DeN is worth it for frequent users who value convenience and reliability in their hot water supply. Say goodbye to cold showers and enjoy the comfort of endless hot water with this high-quality tankless heater.
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FOGATTI Outdoor Natural Gas Tankless Heater
Tired of waiting for hot water? The FOGATTI Natural Gas Tankless Water Heater Outdoor solves this issue with its impressive 180,000 BTU power and up to 8.1 GPM flow rate, providing instant hot water for multiple outlets without delay.
Why It Works
- Continuous hot water eliminates the need for preheating, making it ideal for busy households.
- Outdoor durability ensures it withstands various weather conditions, while the bottom-mounted fan enhances safety and longevity.
- Precision temperature control maintains a consistent temperature, adapting to seasonal changes with remarkable accuracy.
Trade-offs
- Premium price compared to traditional water heaters, but the long-term savings on energy bills and the convenience of instant hot water make it worthwhile.
The FOGATTI tankless water heater is compact and easy to install, compatible with low water pressure, and comes with a robust warranty. Its high-efficiency materials ensure durability and reliable performance, backed by excellent customer support. However, it’s essential to note the need for proper winterization in extreme cold to prevent damage.
Overall, this product is worth it for frequent users who value convenience and efficiency in their hot water supply.
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Rinnai RX199iN Tankless Water Heater
Tired of running out of hot water during your morning shower? The Rinnai RX199iN Condensing Smart Sense Tankless Water Heater fixes this issue with its impressive capacity of up to 11.1 GPM, allowing you to run multiple fixtures simultaneously without a hitch.
Why It Works
- Compact size means it can fit in tight spaces, making it ideal for homes with limited installation options.
- Smart Sense gas control system ensures optimal performance whether powered by natural gas or propane, providing flexibility for homeowners.
- High energy efficiency with a UEF of .98 helps lower utility bills while delivering consistent hot water.
Trade-offs
- Professional installation recommended, which can add to the overall cost, but ensures the system is set up correctly for optimal performance.
- Premium price compared to traditional water heaters, but the long-term savings on energy bills and the convenience of endless hot water make it worthwhile.
Overall, the Rinnai RX199iN is a solid investment for frequent users of hot water, especially in larger households or for those who enjoy long showers without interruptions. Its efficient design and smart technology make it a standout choice among tankless water heaters.
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Faq about best outdoor natural gas tankless water heater:
1:What is a natural gas tankless water heater?
A natural gas tankless water heater heats water on demand using natural gas, providing an endless supply of hot water without the need for a storage tank.
2:What are the benefits of using an outdoor natural gas tankless water heater?
Benefits include energy efficiency, space savings, long lifespan, and the ability to provide hot water instantly, reducing energy costs.
3:How do I choose the best outdoor natural gas tankless water heater?
Consider factors such as flow rate, energy efficiency ratings, installation requirements, and the climate in your area to find the best fit for your needs.
4:Can an outdoor natural gas tankless water heater freeze?
Yes, outdoor models can freeze in extremely cold temperatures. It’s essential to install them in a location protected from freezing conditions or use insulation.
5:How do I maintain my outdoor natural gas tankless water heater?
Regular maintenance includes descaling, checking for gas leaks, and ensuring proper ventilation to keep the unit functioning efficiently.
6:Are outdoor natural gas tankless water heaters safe?
Yes, they are safe when installed correctly, following local codes and guidelines, and regularly maintained to prevent hazards.
Conclusion
The Rheem High Efficiency Outdoor Tankless Water Heater exemplifies superior performance with its impressive 5.26 GPM flow rate, ensuring an uninterrupted supply of hot water while optimizing energy consumption. Its innovative design caters to the demands of modern households, blending efficiency with reliability.
Similarly, the Natural Gas Tankless Water Heater stands out for its robust construction and energy-saving capabilities, making it a prudent choice for environmentally conscious consumers. Both products reflect a commitment to excellence, offering sustainable solutions that enhance comfort and convenience in outdoor settings.





