Rinnai RXP199iN Tankless Water Heater: In-Depth Review

The Rinnai RXP199iN Condensing Tankless Water Heater stands out in the world of modern water heating solutions due to its energy efficiency, smart features, and versatility. As a market leader in tankless water heating technology, Rinnai has packed several advanced features into this compact unit, designed to meet the needs of both residential and commercial users. In this review, we will explore the key features, performance, pros, cons, and overall customer satisfaction to help you decide whether the Rinnai RXP199iN is the right choice for your hot water needs.

Key Features and Specifications

The Rinnai RXP199iN is a high-efficiency, condensing tankless water heater designed for both indoor and outdoor installation. This unit is powered by either natural gas or propane, providing flexibility for homeowners and businesses alike.

Key Features:

• Smart Sense Gas Control System: The Smart Sense technology ensures optimal energy consumption by adjusting the water heater’s operation based on your usage patterns. This helps reduce wasted energy and enhances overall efficiency.
• Versa Vent System: This innovative feature enables the RXP199iN to be installed both indoors and outdoors. This versatile design allows homeowners to choose the best location for installation, whether it’s a cramped utility room or an outdoor setting.
• Smart-Circ Intelligent Recirculation: This feature uses an internal pump to monitor and learn your water usage habits. It schedules the recirculation of hot water, ensuring faster access to hot water when needed and conserving energy when it’s not in use.
• Wi-Fi Connectivity (via Control-R module): Though not included, the Wi-Fi control module (Control-R) allows you to manage your water heater remotely using a smartphone app. This provides an added level of convenience for monitoring usage, diagnostics, and maintenance.
• Quick Flush Feature: This simplifies the maintenance process by making flushing and descaling the system faster and more efficient.
• Super High Efficiency (UEF 0.98): With an energy factor of 0.98, the RXP199iN is one of the most energy-efficient units on the market, saving both water and energy while delivering consistent hot water.

Specifications:

Feature	Details
Dimensions	19″ W x 31″ H
Weight	58 lbs
Power Source	Natural Gas or Propane
Wattage	98 watts
Water Flow Rate	Up to 11.1 GPM (Gallons Per Minute)
Heating Capacity	199,000 BTU
Installation Type	Indoor or Outdoor
Efficiency Rating	UEF 0.98
Smart Features	Smart-Circ, Wi-Fi Connectivity (via Control-R module)
Maintenance Feature	Quick Flush

Performance

The Rinnai RXP199iN is a performance-oriented tankless water heater that delivers on its promises of continuous hot water and energy efficiency. With the ability to supply up to 11.1 GPM, it is capable of handling multiple fixtures running simultaneously. This makes it an ideal choice for large households or small commercial spaces that require consistent hot water at all times.

Hot Water Delivery:

One of the standout features of the Rinnai RXP199iN is its on-demand hot water supply. Unlike traditional tank water heaters that store hot water and can run out, this unit heats water instantly as it flows through the system. The unit ensures that water temperatures remain consistent, offering an uninterrupted supply of hot water, whether you’re running the dishwasher, taking a shower, or doing laundry.

Energy Efficiency:

With an ultra-high efficiency factor of UEF 0.98, the Rinnai RXP199iN delivers superior energy savings. This condensing model captures more heat from the exhaust gases, transferring it back into the system, which enhances efficiency. It helps reduce energy costs, particularly for larger households with high water usage.

Noise Levels:

While some users have praised the unit for being quiet during operation, others have reported that it can be a bit noisy when the recirculation pump is active. The sound level is comparable to other high-efficiency models, but it might be noticeable if installed in quiet areas like bedrooms or living rooms.

Installation and Setup:

The installation process for the Rinnai RXP199iN is straightforward, though professional installation is recommended. The unit is compact and lightweight, which makes it easier to fit into tight spaces. The flexible Versa Vent system simplifies the process of converting it for both indoor and outdoor installations. The Quick Flush feature also allows for easy maintenance, ensuring that your water heater remains in peak condition for years.

Customer Feedback

Customer reviews for the Rinnai RXP199iN are generally positive, with many praising the unit’s consistent hot water delivery, energy efficiency, and smart features. Here are some common themes from customer feedback:

Positive Comments:

• Reliability: Many users have reported that the Rinnai RXP199iN provides a steady supply of hot water, even when multiple fixtures are in use. This has been a significant advantage for large households with high water demand.
• Energy Efficiency: Customers appreciate the unit’s high energy efficiency, with several noting reductions in energy bills compared to their old tank-style water heaters.
• Smart Features: The integration with Wi-Fi (via the Control-R module) has received positive reviews, with many users enjoying the ability to monitor and control their water heater remotely.
• Space-Saving Design: Several customers have commented on how compact and easy-to-install the Rinnai RXP199iN is, making it an ideal option for homes with limited space.

Negative Comments:

• Noise Levels: As mentioned earlier, some users have found the unit to be noisier than expected. The sound generated by the internal pump can be noticeable in quieter settings, which could be an issue for some customers.
• Installation Complexity: Though the unit is relatively easy to install, a few customers experienced challenges during installation, particularly when converting the unit for outdoor use. It’s important to hire a professional for installation to avoid potential issues.

Pros and Cons

Pros:

• Continuous Hot Water: Delivers an endless supply of hot water, perfect for large households or small businesses.
• High Energy Efficiency: With a UEF rating of 0.98, it significantly reduces energy consumption, lowering utility bills.
• Smart Features: The Smart-Circ intelligent recirculation system and Wi-Fi connectivity enhance convenience and energy savings.
• Space-Saving Design: Compact size allows for installation in tight spaces, freeing up valuable real estate.
• Versatile Installation: Can be installed both indoors and outdoors, offering flexibility in terms of location.
• Easy Maintenance: The Quick Flush feature makes periodic maintenance easier and more efficient.

Cons:

• Noise Levels: Some users report that the unit can be loud, especially when the recirculation pump is in use.
• Wi-Fi Module Not Included: The Wi-Fi control module is sold separately, which adds to the overall cost for users who want remote control capabilities.

Final Verdict

The Rinnai RXP199iN Condensing Tankless Water Heater is an excellent choice for homeowners and businesses looking for an energy-efficient, reliable, and space-saving solution to meet their hot water needs. With its advanced features like the Smart-Circ intelligent recirculation, Versa Vent system, and high energy efficiency, it stands out as a top-tier option in the tankless water heater market.

While it does come with a higher upfront cost, the long-term savings on energy bills, coupled with the convenience of never running out of hot water, make it a solid investment. The unit’s flexibility in installation, both indoors and outdoors, and its compact design further add to its appeal.

Check out our reviews of the best tankless water heaters below:

• Best Electric Tankless Water Heater
• Best Propane Tankless Water Heater
• Best Natural Gas Tankless Water Heater
• Best Non-Condensing Tankless Water Heater
• Best RV Tankless Water Heate