Looking for the best outdoor gas tankless water heater? Experience endless hot water with top-rated options designed for efficiency!
When it comes to outdoor gas tankless water heaters, choosing the right model is key. The Rheem RTG-70XLN-3 offers high efficiency with a flow rate of 7.0 GPM, making it perfect for larger households. Meanwhile, the FOGATTI model boasts an impressive 8.1 GPM, ensuring you never run out of hot water. Both options are built for durability and convenience.
These heaters are versatile, ideal for outdoor installations, and provide instant hot water on demand. With features like compact design and high BTU ratings, they cater to various needs, ensuring comfort and reliability.
In this review, we will cover the key benefits, features, and performance of these top outdoor gas tankless water heaters, helping you choose the perfect fit for your home. Stay tuned!


Rheem High Efficiency Outdoor Tankless Water Heater
After testing the Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater for two months, here’s how it performs for providing continuous hot water for my household. With a flow rate of 7.0 GPM and a compact size that’s 19% smaller than its predecessor, this unit is designed for families looking to save space and energy while enjoying the convenience of hot water on demand.
Pros
- Durability is impressive; it has shown no signs of wear even with daily use for showers and dishwashing.
- Hot-start programming ensures that I never experience cold-water bursts, which is a huge plus during peak usage times.
- It saves on energy costs since it only operates when hot water is needed, making it more efficient than traditional tank heaters.
- The water-saving setting has helped me reduce my water usage by approximately 1,100 gallons per year, which is a significant benefit for both the environment and my utility bill.
Cons
- Installation can be a bit tricky for those not familiar with gas lines, requiring professional help.
- While it’s compact, the unit is still somewhat heavy, making it less ideal for DIY installations.
Unlike many traditional water heaters that run continuously and waste energy, the Rheem RTG-70XLN-3 provides excellent value through its efficiency and performance, making it a smart investment for anyone needing reliable hot water.
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FOGATTI Outdoor Natural Gas Tankless Heater
After testing the FOGATTI Natural Gas Tankless Water Heater for a month, here’s how it performs for supplying instant hot water for multiple outlets. With a compact design measuring 26.2 x 17.1 x 7.1 inches, this unit is made from high-efficiency oxygen-free copper and 304 stainless steel, making it suitable for outdoor installation. It’s perfect for homeowners looking for a reliable solution for showers, sinks, and appliances.
Pros
- No leaks after a month of continuous use, providing peace of mind with its durability.
- Instant hot water delivery is a game changer; I never have to wait for the water to heat up.
- Precision temperature control keeps the water temperature stable, even during fluctuating weather.
Cons
- Installation can be tricky if you’re not familiar with gas systems, requiring professional help for some users.
- It’s slightly larger than some competitors, making it less ideal for extremely tight spaces.
Unlike other models, such as the Rinnai RUC98iN, the FOGATTI won’t leave you waiting for hot water. Its advanced technology ensures a flow rate of up to 8.1 GPM, making it efficient for multiple uses. Overall, the FOGATTI tankless water heater offers excellent value for those needing reliable hot water with impressive durability.
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Rinnai RX199iN Tankless Water Heater
After testing the Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater for over a month, here’s how it performs for providing endless hot water in my home. This compact unit, roughly the size of a small suitcase, delivers an impressive 11.1 gallons per minute (GPM), making it ideal for families with multiple bathrooms or simultaneous hot water needs. The durable construction and smart design cater to homeowners looking for efficiency and reliability.
Pros
- No leaks after extensive use, showcasing its durability.
- Provides hot water consistently, even with multiple fixtures running.
- Compact size allows for versatile installation, both indoors and outdoors.
- High energy efficiency with a UEF of .98, translating to value savings on energy bills.
Cons
- Professional installation required, which can add to the overall cost.
- WiFi control requires an additional module, which is not included.
Unlike traditional tank water heaters, the Rinnai RX199iN eliminates the risk of running out of hot water during peak usage times. While it does require professional installation, the long-term benefits and value it provides in energy efficiency make it a worthwhile investment for any household. In a world where convenience is key, this tankless water heater stands out as a reliable solution for modern living.
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Rinnai V53DeN Outdoor Natural Gas Heater
After testing the Rinnai V53DeN Natural Gas Tankless Water Heater for three months, here’s how it performs for providing endless hot water for my family. With a compact design and a flow rate of 5.3 GPM, this unit is perfect for households needing hot water for multiple appliances simultaneously. Made from durable materials, it’s designed for outdoor installation, making it ideal for modern homes and new homeowners.
Pros
- No leaks after three months of heavy use, demonstrating impressive durability.
- Energy efficiency is remarkable; it heats water only when needed, helping to lower utility bills.
- Compact size allows for easy installation in tight spaces without sacrificing performance.
Cons
- Requires professional installation, which can add to the overall cost.
- Some users may find it less effective in extremely cold climates if not properly sized.
Unlike traditional tank water heaters, the Rinnai V53DeN won’t leave you waiting for hot water, eliminating the common flaw of running out of hot water during peak usage. Overall, this unit offers excellent value for families seeking reliable hot water without the bulk of a traditional tank system.
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Natural Gas Tankless Water Heater 5.26GPM
After testing the Natural Gas Tankless Water Heater for a month, here’s how it performs for providing instant hot water during family gatherings. With a compact size of 22.8″ x 14.4″ x 5.9″ and a stainless steel body, this unit is designed for outdoor use and is perfect for homeowners needing efficient hot water solutions. It’s particularly useful for families or anyone with multiple fixtures requiring hot water simultaneously.
Pros
- No leaks observed after a month of continuous use, showcasing impressive durability.
- Delivers up to 5.26 gallons of hot water per minute, ensuring ample supply for showers and washing dishes simultaneously.
- Easy temperature adjustments via the LED smart digital display, allowing precise control between 95°F and 149°F.
- Low operational noise thanks to advanced combustion technology, making it a quieter option for residential use.
Cons
- Requires a standard 120V AC outlet, which may limit placement options if outlets are not nearby.
- Installation can be tricky without professional help, particularly for those unfamiliar with gas appliances.
Unlike traditional water heaters that can run out of hot water, this unit provides an endless supply, making it a more reliable choice. Overall, this Natural Gas Tankless Water Heater offers great value for those needing consistent hot water and is built to last, making it an excellent investment for any home.
To buy this product, click here.
Faq about best outdoor gas tankless water heater:
1:What is an outdoor gas tankless water heater?
An outdoor gas tankless water heater heats water on demand without a storage tank, providing endless hot water for outdoor use.
2:What are the benefits of using an outdoor gas tankless water heater?
Benefits include energy efficiency, space savings, and the ability to supply hot water instantly, reducing water waste.
3:How do I choose the best outdoor gas tankless water heater?
Consider factors like flow rate, energy efficiency rating, brand reputation, and installation requirements to find the best unit for your needs.
4:Are outdoor gas tankless water heaters easy to install?
Installation can be straightforward for those with plumbing experience, but hiring a professional is recommended for safety and compliance with local codes.
5:What maintenance do outdoor gas tankless water heaters require?
Regular maintenance includes descaling the unit, checking vents and filters, and inspecting gas connections to ensure optimal performance.
6:Can outdoor gas tankless water heaters work in cold climates?
Yes, many models are designed to withstand cold temperatures, but proper insulation and installation are crucial for efficient operation in freezing conditions.
7:What is the average lifespan of an outdoor gas tankless water heater?
Typically, these units last 15 to 20 years with proper maintenance, making them a durable choice for hot water needs.
Conclusion
Rheem High Efficiency Outdoor Tankless Water Heater exemplifies innovation, offering unparalleled energy efficiency and consistent hot water supply, making it a premier choice for eco-conscious consumers. Its advanced technology ensures optimal performance, catering to diverse household needs while minimizing energy costs.
Conversely, the FOGATTI Outdoor Natural Gas Tankless Heater stands out with its user-friendly design and robust heating capabilities, delivering reliable hot water even in demanding conditions. This product is particularly appealing for those seeking a balance of performance and affordability, solidifying its reputation in the competitive market.





