Top 5 Outdoor Gas Hot Water Heaters That Will Surprise You

Struggling with inconsistent hot water? An outdoor gas hot water heater can provide instant, reliable hot water for your home.

Outdoor gas hot water heaters, like the 2025 GEN II Ranein and Rinnai V53DeN, are designed for efficiency and convenience. They deliver hot water on demand, ensuring you never run out during showers or chores. With features like LED temperature control and digital displays, they simplify temperature management and enhance safety.

In our full review, we break down performance, durability, and more to help you choose the perfect model for your needs.

outdoor gas hot water heateroutdoor gas hot water heateroutdoor gas hot water heater

outdoor gas hot water heater

Ranein 2025 GEN II Tankless Water Heater

#1 CHOICE

2025 GEN II Ranein Natural Gas Tankless Water Heater Max 5.3 GPM, 130,000 BTU Outdoor On Demand Instant Hot Water Heater with LED Temperature Control Panel

After testing the 2025 GEN II Ranein Natural Gas Tankless Water Heater for a month, here’s how it performs for outdoor hot water needs. This compact unit boasts a maximum flow rate of 5.3 GPM and a powerful 130,000 BTU output, making it suitable for multiple taps, such as showers and kitchens, in outdoor settings. Designed for homeowners who require efficient hot water solutions, its wall-mounted design saves space while fitting comfortably in corners or balconies.

Pros

  • No leaks after a month of consistent use, providing peace of mind for outdoor applications.
  • Steady temperature control ensures a comfortable shower experience, even with fluctuating outdoor taps.
  • Energy-saving design reduces utility bills by heating water on demand, eliminating standby heat loss.

Cons

  • Installation can be tricky for those unfamiliar with gas connections, requiring some technical knowledge.
  • Not recommended for elevations above 2,000 feet, which limits its usability in certain locations.

Unlike traditional tank heaters, the Ranein model won’t waste energy with standby heat loss, making it a more eco-friendly choice. Overall, its durability and efficiency make it an excellent option for outdoor hot water needs, though potential buyers should be prepared for the installation process.

To buy this product, click here.

Propane Tankless Outdoor Water Heater 5.26GPM

#2 CHOICE

Propane Tankless Water Heater Outdoor,5.26GPM 20L Outdoor,Instant Hot Propane Gas Water Heater with Fahrenheit Digital Display,Multi-Protection

After testing the Propane Tankless Water Heater Outdoor for two weeks, here’s how it performs for providing instant hot water for outdoor showers and washing dishes. This unit measures 22.8″ x 14.4″ x 5.9″ and is made of stainless steel, making it ideal for homeowners looking for a durable and efficient solution for outdoor hot water needs.

Pros

  • No leaks after extensive use, showcasing its impressive durability.
  • Fast heating with a maximum temperature rise of 149°F, perfect for quick outdoor setups.
  • Operates efficiently with just 3.6 PSI of water pressure, allowing for value in low-pressure situations.
  • LED smart digital display makes temperature adjustments straightforward.
READ MORE  Electric portable patio heater - Which ones truly stand out this season?

Cons

  • Complex installation may require professional help for those unfamiliar with outdoor plumbing.
  • Requires a standard 120V AC outlet, which may limit placement options.

Unlike traditional tank heaters, this model won’t leave you waiting for hot water, making it a significant upgrade for outdoor use. Its advanced combustion technology also reduces gas consumption, which is a notable benefit compared to competitors that often waste energy. Overall, the Propane Tankless Water Heater Outdoor stands out for its energy-saving features and consistent temperature control, making it a reliable choice for anyone needing hot water on demand.

To buy this product, click here.

Rinnai V53DeN Outdoor Natural Gas Heater

#3 CHOICE

Rinnai V53DeN Natural Gas Tankless Water Heater - 5.3 GPM, Outdoor Installation

After testing the Rinnai V53DeN Natural Gas Tankless Water Heater for three months, here’s how it performs for providing endless hot water to my family. This compact unit boasts a flow rate of 5.3 GPM and is designed for outdoor installation, making it ideal for families or homeowners with limited space. Its durable construction and energy-efficient operation make it a great choice for those looking to reduce utility bills.

Pros

  • No cold showers experienced, even during peak usage times with multiple appliances running simultaneously.

Cons

  • Requires professional installation, which can add to the initial cost.

Unlike traditional tank water heaters, the Rinnai V53DeN won’t leave you waiting for hot water to refill. This model heats water on demand, ensuring that you have a continuous supply without the need for a bulky tank. The durability is evident with a 10-year warranty on the heat exchanger, providing peace of mind for long-term use. However, the requirement for professional installation might be a drawback for some, as it adds to the overall value consideration.

In summary, if you’re looking for a reliable and efficient hot water solution, the Rinnai V53DeN is a strong contender. Its compact design and energy-saving features make it a suitable option for modern households.

To buy this product, click here.

Rheem High Efficiency Outdoor Tankless Water Heater

#4 CHOICE

Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray

After testing the Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater for a month, here’s how it performs for providing continuous hot water for my family of four. With a flow rate of 7.0 GPM, this compact unit, measuring 19% smaller than its predecessor, fits snugly in our outdoor space. It’s designed for homeowners looking to save on energy and water costs while enjoying the comfort of hot water on demand.

READ MORE  Electric water boiler for home that will change your daily routine

Pros

  • No leaks after a month of use, providing peace of mind.
  • Energy efficient: It only operates when hot water is needed, which has noticeably reduced our utility bills.
  • Space-saving design makes installation straightforward, even in tight areas.
  • Hot-start programming eliminates cold-water bursts, ensuring a consistent hot water supply.

Cons

  • Requires professional installation, which may add to initial costs.
  • Limited flow rate for simultaneous use; running multiple showers at once can be challenging.

Unlike traditional tank water heaters, the Rheem RTG-70XLN-3 won’t take up valuable indoor space or leave you waiting for hot water. Overall, this unit offers excellent value for families seeking reliable hot water without the bulk of traditional systems.

To buy this product, click here.

FOGATTI Outdoor Natural Gas Tankless Water Heater

#5 CHOICE

FOGATTI Natural Gas Tankless Water Heater Outdoor - Max 8.1 GPM 180,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 180S Series

After testing the FOGATTI Natural Gas Tankless Water Heater for a month, here’s how it performs for providing instant hot water in my outdoor setup. With a compact design measuring 26.2 x 17.1 x 7.1 inches and a robust output of 180,000 BTU, this unit is ideal for homeowners looking for a reliable hot water solution for multiple outlets, such as showers and sinks.

Pros

  • No leaks after a month of continuous use, showcasing its durability.
  • Instant hot water delivery means no waiting time, which is perfect for busy mornings.
  • Easy installation process allows for quick setup, even for those with minimal DIY experience.
  • Temperature control is precise, maintaining a consistent flow within ±1℉, enhancing user comfort.

Cons

  • Requires natural gas, which may not be available in all locations.
  • Outdoor installation might not suit every home design, limiting its target audience.

Unlike traditional tank water heaters, the FOGATTI model won’t leave you waiting for hot water, making it a valuable addition for any outdoor space. However, it’s essential to ensure your location can support natural gas installation. Overall, I find this tankless water heater to be an excellent investment for those seeking value and efficiency in their hot water solutions.

READ MORE  80 Gallon Gas Water Heater – Are These the Hidden Gems You Need?

To buy this product, click here.

Faq about outdoor gas hot water heater:

1: What is an outdoor gas hot water heater?

An outdoor gas hot water heater is a system that heats water using gas as a fuel source, designed for installation outside a home or building.

2: How does an outdoor gas hot water heater work?

This heater uses gas burners to heat water, which is then delivered to faucets and appliances through a plumbing system.

3: What are the benefits of using an outdoor gas hot water heater?

Benefits include energy efficiency, consistent hot water supply, and space-saving installation since it is located outdoors.

4: Is installation difficult for outdoor gas hot water heaters?

Installation requires professional assistance to ensure safety and compliance with local codes, particularly for gas connections.

5: How do I maintain an outdoor gas hot water heater?

Regular maintenance includes checking gas connections, flushing the tank to remove sediment, and inspecting for leaks or corrosion.

6: Are outdoor gas hot water heaters safe?

Yes, when properly installed and maintained, they are safe. Always follow manufacturer guidelines and local regulations.

7: What is the lifespan of an outdoor gas hot water heater?

The average lifespan is 10 to 15 years, depending on usage and maintenance practices.

Conclusion

The Ranein 2025 GEN II Tankless Water Heater exemplifies efficiency and reliability, delivering a remarkable flow rate of 5.26 GPM, making it an ideal choice for those seeking uninterrupted hot water supply. Its advanced technology ensures optimal performance while conserving energy, appealing to environmentally conscious consumers.

Similarly, the Propane Tankless Outdoor Water Heater stands out for its compact design and robust heating capabilities, catering to diverse outdoor needs. With its impressive output and user-friendly features, it promises to enhance any outdoor experience, solidifying its position as a top contender in the market.