10 Best Rinnai Tankless 2025 in the United States

The Rinnai RXP199iN is a versatile tankless water heater suitable for both indoor and outdoor installations, thanks to its adaptable Versa Vent system. With the capacity to deliver up to 11.1 gallons per minute, it can efficiently supply hot water to multiple fixtures simultaneously, making it ideal for larger households or small businesses. Powered by natural gas or propane, this model offers flexibility in fuel options, and its high energy efficiency of 98% helps minimize utility costs.

A standout feature is the Smart-Circ Intelligent Recirculation system, which optimizes water heating based on your usage habits, enhancing both convenience and energy conservation. The Smart Sense gas control system further ensures safe and efficient operations. However, utilizing the full potential of this heater requires additional purchases, like the Control-R module for WiFi connectivity, which is not included. This device allows for remote control and monitoring, adding a layer of convenience for tech-savvy users.

Installation is recommended to be handled by professionals to ensure safety and optimal functionality, and Rinnai provides resources to locate qualified technicians. While the product's compact size makes it easy to fit in various spaces, its installation complexity might be a consideration for those seeking a straightforward setup. With a maximum temperature of 140 degrees Fahrenheit and robust performance at 199,000 BTUs, the Rinnai RXP199iN is designed for high-demand settings. Though the initial investment might be higher compared to some competitors—given the need for professional installation and additional accessories—the long-term savings on energy bills and the continuous hot water supply could justify the cost for many users.

The Rinnai CXP199iN is a high-efficiency tankless water heater designed for both indoor and outdoor installation, making it versatile for different settings. It boasts a high flow rate of 11 GPM, which is sufficient to handle multiple hot water needs simultaneously. The energy efficiency is impressive at 97%, ensuring lower operational costs over time. The unit uses natural gas but can also be powered by propane, thanks to its Smart Sense gas control system, offering flexibility based on fuel availability.

One of its standout features is the Smart-Circ system, which learns your hot water usage patterns and efficiently manages water recirculation, contributing further to energy savings. Additionally, you can monitor and manage the heater through the Rinnai Central App, simplifying its operation and troubleshooting. Professional installation is recommended, particularly for commercial use, to ensure optimal performance. The quick flush system aids in easy maintenance, although some users might find the need for regular maintenance a slight inconvenience.

The unit is relatively heavy at 71.8 pounds and fairly large in size, which might require careful planning for installation space. The warranty and support from Rinnai are solid, providing peace of mind to users. The Rinnai CXP199iN is a robust and efficient choice for those looking for a reliable tankless water heater with smart features and high energy efficiency.

The Rinnai RX199iN is a versatile tankless water heater that can be powered by natural gas or propane and installed indoors or outdoors. With a maximum flow rate of up to 11.1 gallons per minute, it can support multiple fixtures simultaneously, which is ideal for families or homes with high hot water demands. Its compact design, roughly the size of a small suitcase, makes it easier to install in various spaces without taking up too much room.

One of its standout features is its energy efficiency, boasting a UEF rating of .98, which means it can help save on utility bills while providing hot water on demand. The Smart Sense gas control system enhances user convenience, but keep in mind that it requires professional installation, which might be an additional cost for homeowners.

The quick flush feature simplifies maintenance, which is a plus for users who may not have much experience with water heaters. However, the reliance on professional installation could deter DIY enthusiasts or those looking to save on installation costs. The WiFi control is available but requires an additional module, which may not appeal to everyone. The Rinnai RX199iN is a solid choice for households seeking a reliable and efficient tankless water heater.