Outdoor Tankless Water Heater – Which One Will Transform Your Experience?

Over 70% of homeowners choose a propane tankless water heater for instant hot water.

That’s why the Rinnai V53DeP and Rheem RTG-70XLN-3 stand out with their impressive 5.3 and 7.0 GPM flow rates, ensuring you never run out of hot water.

Few know that these units also offer energy efficiency benefits, significantly reducing energy costs compared to traditional systems.

Our review covers long-term value versus rivals, helping you make an informed decision for your home.

outdoor tankless water heateroutdoor tankless water heateroutdoor tankless water heater

outdoor tankless water heater

Propane Tankless Water Heater 5.26GPM

#1 CHOICE

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

The adjustable valve sets the Propane Tankless Water Heater Outdoor apart from competitors in the market. This unit boasts a robust construction with a stainless steel body that enhances its temperature and corrosion resistance, ensuring long-lasting performance. Measuring 22.8″ x 14.4″ x 5.9″, it is designed for efficient outdoor installation and is powered by a standard 120V AC outlet.

Key Advantages

  • The 316-grade stainless steel body resists corrosion, while the oxygen-free copper water tank minimizes heat loss, extending the unit’s service life.
  • With a high-performance output of 120,000 BTU per hour, it delivers up to 5.26 GPM of hot water, making it suitable for multiple fixtures.
  • Advanced water servo technology and built-in temperature sensors ensure precise temperature control within ±1℉.

Limitations

  • Not compatible with electric systems or other fuel types, as it is designed exclusively for propane (LPG).

This unit is best for outdoor enthusiasts needing a reliable and efficient hot water solution for camping, RVs, or remote cabins. Its combination of advanced features, durability, and ease of use makes it an excellent choice for those seeking on-demand hot water in outdoor settings.

To buy this product, click here.

Rinnai V53DeP Outdoor Propane Water Heater

#2 CHOICE

Rinnai V53DeP Propane Tankless Water Heater, 5.3 GPM, Outdoor Installation

The adjustable valve sets the Rinnai V53DeP Propane Tankless Water Heater apart from its competitors. This feature allows users to customize the water temperature to their specific needs, enhancing comfort and efficiency. Constructed from 316-grade stainless steel, the unit is designed to resist corrosion, ensuring durability even in harsh outdoor conditions. With dimensions of 26 x 14 x 10 inches, it fits conveniently in tight spaces while delivering a powerful 5.3 GPM flow rate.

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Key Advantages

  • The energy-efficient performance of this heater conserves energy by heating water on demand, reducing waste and lowering utility bills. Its advanced scale detection features further enhance the unit’s lifespan.

Limitations

  • It is not compatible with natural gas systems, limiting its application for users who do not have propane available.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai V53DeP is ideal for families and individuals who require consistent hot water for multiple appliances simultaneously. Its professional installation recommendation ensures optimal performance and adherence to safety standards, making it a wise investment for those looking to upgrade their hot water system.

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Rheem High Efficiency Outdoor Tankless Water Heater

#3 CHOICE

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

The adjustable valve sets the Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater apart from its competitors. Constructed with 316-grade stainless steel, this unit resists corrosion, ensuring durability and longevity. With dimensions of 27 x 18 x 10 inches and a weight reduction of 22% compared to previous models, it is designed for easy installation and space savings.

Key Advantages

  • The 7.0 GPM flow rate provides sufficient hot water for multiple applications simultaneously, making it ideal for larger households.
  • Its high efficiency allows the heater to run only when needed, significantly reducing energy costs.
  • Water-saving settings can conserve up to 1,100 gallons of water per year, making it an eco-friendly choice.
  • The hot-start programming feature ensures the system is always ready, eliminating cold-water bursts.

Limitations

  • Not compatible with electric systems, limiting its use to natural gas setups.
  • Requires proper venting, which may complicate installation in certain locations.

Best for outdoor enthusiasts needing a reliable, high-capacity water heating solution, the Rheem RTG-70XLN-3 offers continuous hot water and significant energy savings, making it an excellent investment for any home.

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Rinnai RX199iN Tankless Water Heater

#4 CHOICE

NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

The adjustable valve sets the Rinnai RX199iN Condensing Smart Sense Tankless Water Heater apart from its competitors. This unit is designed for both indoor and outdoor installation, utilizing a compact size of just 24.2 x 18.5 x 10.8 inches and weighing 45 pounds. Constructed with 316-grade stainless steel, it resists corrosion and ensures durability in various environments.

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Key Advantages

  • The heater delivers an impressive flow rate of up to 11.1 GPM, making it suitable for simultaneous use across multiple fixtures.

Limitations

  • Not compatible with certain older plumbing systems, which may require additional upgrades for optimal performance.

This model features a Smart Sense gas control system, enhancing efficiency with a UEF of .98. The Quick Flush feature simplifies maintenance, while the optional Controlr module allows for WiFi control (not included), adding convenience for tech-savvy users.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai RX199iN is ideal for those looking to maximize space without sacrificing performance. Its professional installation recommendation ensures that users can enjoy hassle-free operation and longevity from their investment.

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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

The adjustable valve sets the FOGATTI Natural Gas Tankless Water Heater apart, providing users with precise control over their hot water supply. This model boasts a robust design crafted from 316-grade stainless steel, ensuring resistance to corrosion and enhancing longevity. With dimensions of 26.2 x 17.1 x 7.1 inches, it is compact enough for various outdoor installations.

Key Advantages

  • The unit features a powerful 180,000 BTU output, delivering up to 8.1 GPM, making it suitable for multiple outlets simultaneously.
  • Advanced water servo technology and temperature sensors maintain a consistent temperature within ±1℉, ensuring comfort across seasons.
  • The bottom-mounted fan design enhances safety by preventing smoke backflow, while the high-efficiency oxygen-free copper heat exchanger maximizes performance.

Limitations

  • Not compatible with low water pressure below 15 PSI, which may limit its usability in certain locations.
  • Installation requires a standard 120V AC connection, which may necessitate additional electrical work in some setups.

Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the FOGATTI tankless water heater excels in providing instant hot water for various applications, ensuring comfort and convenience in any outdoor setting.

To buy this product, click here.

Faq about outdoor tankless water heater:

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1: What is an outdoor tankless water heater?

An outdoor tankless water heater heats water on demand without a storage tank, providing a continuous supply of hot water while saving space.

2: How does an outdoor tankless water heater work?

It activates when a hot water tap is opened, using a heat exchanger to warm the water as it flows through, ensuring instant hot water delivery.

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

Benefits include energy efficiency, space savings, longer lifespan, and the ability to provide hot water for multiple outlets simultaneously.

4: Are outdoor tankless water heaters energy-efficient?

Yes, they are more energy-efficient than traditional water heaters, as they only heat water when needed, reducing energy waste.

5: Can outdoor tankless water heaters freeze in cold weather?

Yes, they can freeze if not properly insulated or winterized. Installing them in a protected area or using freeze protection features is recommended.

6: What size outdoor tankless water heater do I need?

The size depends on your hot water demand. Calculate the flow rate needed for your household to choose the appropriate model.

7: Do outdoor tankless water heaters require maintenance?

Yes, regular maintenance, including descaling and checking for leaks, is necessary to ensure optimal performance and longevity.

Conclusion

Rinnai V53DeP emerges as a paragon of efficiency and performance in outdoor water heating solutions, delivering an impressive flow rate of 5.26 GPM. Its compact design and robust propane functionality make it an exemplary choice for those seeking reliability and convenience in outdoor settings.

Furthermore, the seamless integration of advanced technology ensures optimal energy consumption, positioning the Rinnai V53DeP as a leader in sustainable heating solutions. This product not only meets but exceeds expectations, catering to diverse outdoor hot water needs with unparalleled efficacy.