Rinnai 160 Tankless Water Heater Review

Hot water availability can be a significant concern, whether you’re managing a busy household or running a small business. Traditional tank water heaters often lead to frustrating waits for hot water or even running out during peak use. Tankless water heaters, like the Rinnai 160 series, provide an efficient solution by heating water on demand, ensuring you never run out.

Choosing the right tankless water heater involves understanding your hot water needs, energy efficiency, and installation preferences. Rinnai stands out in this category, known for durable, high-performance models designed for various applications, from residential to commercial use. With features like Wi-Fi monitoring and energy-saving technologies, these units promise reliability and convenience.

In this roundup, we will review the top five Rinnai 160 tankless water heaters, exploring their unique features, ideal use cases, and any limitations you should consider. Each model serves different needs, ensuring there’s a perfect fit for your hot water requirements.

Comparing key specifications will help you find the right model quickly:

Features	Rinnai CU160iN	Rinnai RE160iP	Rinnai RX180iN	Rinnai RU160eN	Rinnai RE160eP
Type	Condensing Natural Gas	Non-Condensing Propane	Condensing Propane/Natural Gas	Condensing Natural Gas	Non-Condensing Propane
Flow Rate	9 GPM	6.6 GPM	10 GPM	9 GPM	6.1 GPM
Installation	Indoor	Indoor	Indoor/Outdoor	Outdoor	Outdoor
Warranty	8/5/1 Years	15/5/1 Years	15/5/1 Years	15/5/1 Years	15/5/1 Years
Smart Features	Wi-Fi Monitoring	LED Screen	Wi-Fi Control	Wi-Fi Monitoring	LED Screen

Rinnai CU160iN Commercial…

The Rinnai CU160iN is a condensing natural gas tankless water heater designed for commercial use. With a flow rate of 9 GPM, it’s ideal for businesses requiring a consistent supply of hot water, such as restaurants or salons.

This model shines in energy efficiency and space-saving design, making it suitable for places with limited installation space. The Circ-Logic technology optimizes water flow based on usage patterns, and Wi-Fi monitoring offers real-time updates on water temperature and system status.

However, professional installation is highly recommended, which may add to the initial costs. It’s also best suited for businesses rather than residential use due to its higher capacity.

• Energy-efficient design
• 9 GPM flow rate
• Circ-Logic technology
• Wi-Fi monitoring capability
• Commercial warranty: 8/5/1 years

Best for: Businesses needing reliable, high-capacity hot water.

Rinnai RE160iP Non-Conden…

The Rinnai RE160iP is a non-condensing propane tankless water heater, perfect for residential applications. It provides up to 6.6 GPM, accommodating multiple fixtures simultaneously, making it suitable for average-sized homes.

This compact unit is designed for easy installation and maintenance, with an LED screen that displays service reminders and error codes. Its energy-efficient operation means it heats water only when needed, helping to lower utility bills.

One trade-off is its lower flow rate compared to some other models, which may not suffice for larger households with high simultaneous demands. Additionally, it requires propane, which may not be available in all areas.

• 6.6 GPM flow rate
• Compact, suitcase-sized design
• LED error code display
• 15/5/1-year warranty
• Energy-efficient operation

Best for: Average-sized homes with moderate hot water needs.

Rinnai RX180iN Condensing…

The Rinnai RX180iN is a versatile condensing tankless water heater that works with both propane and natural gas. It offers an impressive 10 GPM flow rate, making it suitable for larger homes or commercial applications.

This model features advanced Smart Sense technology, ensuring efficient operation and easy installation, whether indoors or outdoors. Its high energy efficiency rating (UEF.98) helps save on energy bills, while the Quick Flush feature simplifies maintenance.

However, the RX180iN requires a dedicated venting system and may necessitate professional installation, which could increase upfront costs. Users might also find the size slightly bulkier compared to other models.

• 10 GPM flow rate
• Versatile installation options
• Smart Sense technology
• High energy efficiency (UEF.98)
• 15/5/1-year warranty

Best for: Large households or businesses needing high hot water demand.

Rinnai RU160eN Condensing…

The Rinnai RU160eN is a condensing tankless water heater designed for outdoor installation. With a flow rate of 9 GPM, it can support multiple appliances simultaneously, making it ideal for homes with high hot water needs.

This model features Circ-Logic technology for efficient water recirculation, ensuring hot water is readily available when you need it. The outdoor design saves space indoors and is ideal for warmer climates.

A drawback is that it may not perform as well in extremely cold temperatures, and installation outdoors requires consideration of local weather conditions. Additionally, the outdoor setup may limit placement options.

• 9 GPM flow rate
• Outdoor installation only
• Circ-Logic technology
• 15/5/1-year warranty
• Energy-efficient design

Best for: Homes in warm climates needing efficient hot water.

Rinnai RE160eP Non-Conden…

The Rinnai RE160eP is a non-condensing propane tankless water heater, perfect for outdoor installation. It provides a flow rate of 6.1 GPM, suitable for smaller homes or light-duty applications.

This model’s compact design allows for easy placement outside, saving indoor space while efficiently heating water only when needed. The LED screen offers useful service reminders, enhancing user convenience.

However, its lower flow rate may not support simultaneous use across multiple fixtures, which can be limiting for larger households. Also, being propane-powered, it might not be suitable for all users depending on fuel availability.

• 6.1 GPM flow rate
• Compact outdoor design
• LED screen for reminders
• 15/5/1-year warranty
• Energy-efficient operation

Best for: Smaller homes with basic hot water needs.

How We Chose These Products

We evaluated each Rinnai tankless water heater based on performance, efficiency, and suitability for various applications. We considered user reviews, expert feedback, and the specific features that cater to different hot water needs. The models selected represent a range of prices and capacities to meet diverse consumer requirements.

Our methodology involved analyzing each model’s specifications, including flow rates and energy efficiency ratings, to ensure we recommend options that provide reliable hot water without excessively high energy bills. We also factored in warranties and customer support, as these elements are crucial for long-term satisfaction.

Buying Guide: What Really Matters

When selecting a tankless water heater, consider the flow rate you need. This is especially important for larger families or homes with multiple bathrooms. Measure peak demand by assessing how many fixtures will run simultaneously—this helps in choosing a model that can handle your needs.

Energy efficiency is another critical factor. Look for models with higher UEF ratings, as these will save you money in the long run. Additionally, installation type matters; some models may require professional installation, which could affect your overall budget. Always check local building codes and regulations regarding venting and installation.

Our Top Recommendation

For those needing a high-capacity solution, the Rinnai RX180iN stands out as the best choice due to its impressive flow rate and versatility in installation. For smaller households or those on a budget, the Rinnai RE160iP offers reliable performance without the higher upfront costs associated with larger models.

Frequently Asked Questions

What size tankless water heater do I need? The size depends on your peak hot water demand measured in gallons per minute (GPM). Assess how many fixtures will be used simultaneously to determine the right capacity.

Can I install a tankless water heater myself? While some users may attempt DIY installation, professional installation is recommended for optimal performance, safety, and to comply with local codes.

How long do Rinnai tankless water heaters last? Rinnai tankless water heaters generally have a lifespan of 15-20 years with proper maintenance, making them a long-term investment for your home.

What maintenance is required for tankless water heaters? Regular flushing to remove mineral buildup is essential for maintaining efficiency. Check the manufacturer’s guidelines for specific maintenance schedules and procedures.