Best Rinnai Outdoor Propane Tankless Hot Water Heater in 2025
Updated on July 2025
#1
Recommended
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- Indoor and outdoor use with both natural gas and propane compatibility
- High efficiency rating of 96%
- Gas control system featuring Smart Sense technology
- Rinnai Central App for setup, service, and troubleshooting
- Simplified flushing process with Quick Flush technology
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- Indoor and outdoor use with both natural gas and propane compatibility
- High efficiency rating of 96%
- Gas control system featuring Smart Sense technology
- Rinnai Central App for setup, service, and troubleshooting
- Simplified flushing process with Quick Flush technology
#2
Value for Money
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- Space-saving, energy-efficient tankless design heats water only when needed, reducing energy consumption.
- Delivers 11 GPM hot water flow rate for consistent and powerful performance suitable for commercial use.
- Equipped with Circ-Logic technology for optimized recirculation based on usage patterns; features Wi-Fi for on-demand hot water management.
- Professional installation by a qualified technician is recommended for optimal performance and safety; refer to the Rinnai PRO page to find local installers.
- Includes a robust warranty of 8 years for the heat exchanger, and 5 years for parts and 1 year for labor, ensuring long-lasting reliability.
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- Space-saving, energy-efficient tankless design heats water only when needed, reducing energy consumption.
- Delivers 11 GPM hot water flow rate for consistent and powerful performance suitable for commercial use.
- Equipped with Circ-Logic technology for optimized recirculation based on usage patterns; features Wi-Fi for on-demand hot water management.
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#3
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- Versatile installation options for indoor or outdoor use with Smart Sense gas control for propane or natural gas.
- Compact size similar to a small suitcase, capable of delivering up to 11.1 GPM to support multiple fixtures simultaneously.
- Efficient design featuring an easy-to-use interface, Quick Flush for maintenance, and high energy efficiency rated at UEF .98.
- Professional installation is advisable; support available through the Rinnai Central App for setup and troubleshooting.
- Comprehensive resources including product guides and manuals available for optimal sizing and performance in different regions.
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- Versatile installation options for indoor or outdoor use with Smart Sense gas control for propane or natural gas.
- Compact size similar to a small suitcase, capable of delivering up to 11.1 GPM to support multiple fixtures simultaneously.
- Efficient design featuring an easy-to-use interface, Quick Flush for maintenance, and high energy efficiency rated at UEF .98.
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#4
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- Provides up to 5.1 GPM and 120,000 BTU for effective hot water delivery to 2-4 fixtures.
- Durable for outdoor use with IPX4 waterproof rating and capability to function in low temperatures.
- CSA certified with extensive safety features including overheat and water leakage protections.
- High-quality copper construction for efficient heating and adjustable modes to save energy.
- Maintains a stable water temperature within 1°F for a consistent shower experience.
- Compact size with standard connectors for easy installation; professional installation is advised.
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- Provides up to 5.1 GPM and 120,000 BTU for effective hot water delivery to 2-4 fixtures.
- Durable for outdoor use with IPX4 waterproof rating and capability to function in low temperatures.
- CSA certified with extensive safety features including overheat and water leakage protections.
- High-quality copper construction for efficient heating and adjustable modes to save energy.
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#5
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- Provides hot water for simultaneous use in multiple applications like showers and dishwashers
- High efficiency operation reduces energy consumption
- Water saving feature that can save up to 1,100 gallons annually
- Hot-start programming prevents cold-water bursts
- Compact design saves space with a 19% smaller footprint and 22% lighter weight
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- Provides hot water for simultaneous use in multiple applications like showers and dishwashers
- High efficiency operation reduces energy consumption
- Water saving feature that can save up to 1,100 gallons annually
- Hot-start programming prevents cold-water bursts
- Compact design saves space with a 19% smaller footprint and 22% lighter weight
#6
18% Off
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- Provides ample hot water for simultaneous use in multiple applications.
- Energy-efficient design operates only when hot water is needed.
- Water-saving feature reduces consumption by up to 1,100 gallons annually.
- Hot-start programming ensures immediate hot water availability without cold bursts.
- LeakGuard technology detects and prevents internal leaks, safeguarding your home from water damage.
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- Provides ample hot water for simultaneous use in multiple applications.
- Energy-efficient design operates only when hot water is needed.
- Water-saving feature reduces consumption by up to 1,100 gallons annually.
- Hot-start programming ensures immediate hot water availability without cold bursts.
- LeakGuard technology detects and prevents internal leaks, safeguarding your home from water damage.
#7
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- Produces continuous hot water on demand with a flow rate of 8.1 GPM and a power output of 180,000 BTU, suitable for multi-point water supply.
- Designed for outdoor installation, featuring an indoor remote control panel and a powerful DC fan to withstand challenging weather conditions.
- Maintains precise water temperature control within 1°F through advanced gas and water adjustment technology, adaptable for all seasons.
- Compact dimensions (26.2" x 17.1" x 7.1") allow for easy installation with standard fittings, requiring minimal space.
- Certified by CSA, this water heater comes with a 2-year warranty for the entire unit and a 5-year warranty for the heat exchanger, providing reliable customer support.
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- Produces continuous hot water on demand with a flow rate of 8.1 GPM and a power output of 180,000 BTU, suitable for multi-point water supply.
- Designed for outdoor installation, featuring an indoor remote control panel and a powerful DC fan to withstand challenging weather conditions.
- Maintains precise water temperature control within 1°F through advanced gas and water adjustment technology, adaptable for all seasons.
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#8
9% Off
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- Provides sufficient hot water for simultaneous use in multiple applications, such as showers and dishwashers
- Operates only when necessary, leading to reduced energy consumption
- Water-saving feature conserves up to 1,100 gallons annually
- Hot-start programming prevents cold-water bursts by maintaining ready state
- Compact design is 19% smaller and 22% lighter than previous models for easier installation
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- Provides sufficient hot water for simultaneous use in multiple applications, such as showers and dishwashers
- Operates only when necessary, leading to reduced energy consumption
- Water-saving feature conserves up to 1,100 gallons annually
- Hot-start programming prevents cold-water bursts by maintaining ready state
- Compact design is 19% smaller and 22% lighter than previous models for easier installation
#9
24% Off
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- Provides sufficient hot water for simultaneous use in multiple applications, like showers and dishwashers
- Energy-efficient design operates only when hot water is needed
- Water-saving feature can reduce usage by up to 1,100 gallons annually
- Hot-start programming minimizes the risk of cold water bursts
- LeakGuard technology offers leak detection and prevention to protect against water damage
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- Provides sufficient hot water for simultaneous use in multiple applications, like showers and dishwashers
- Energy-efficient design operates only when hot water is needed
- Water-saving feature can reduce usage by up to 1,100 gallons annually
- Hot-start programming minimizes the risk of cold water bursts
- LeakGuard technology offers leak detection and prevention to protect against water damage
#10
11% Off
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- Provides consistent hot water for multiple applications simultaneously, ensuring comfort throughout your home.
- Energy-efficient design operates only when hot water is needed, helping to reduce energy costs.
- Equipped with EcoNet Wi-Fi technology for remote settings adjustment, energy monitoring, maintenance alerts, and temperature control via mobile devices.
- Hot-start programming minimizes cold-water bursts by keeping the water heater ready to use.
- LeakGuard technology proactively detects and prevents leaks, safeguarding your home from water damage.
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- Provides consistent hot water for multiple applications simultaneously, ensuring comfort throughout your home.
- Energy-efficient design operates only when hot water is needed, helping to reduce energy costs.
- Equipped with EcoNet Wi-Fi technology for remote settings adjustment, energy monitoring, maintenance alerts, and temperature control via mobile devices.
- Hot-start programming minimizes cold-water bursts by keeping the water heater ready to use.
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