The Navien Tankless Water Heater 210K with Built-in Buffer Tank is a high-efficiency on-demand water heater that includes a built-in buffer tank to enhance performance and convenience. This model is designed for residential and light commercial applications where a combination of high capacity and a consistent hot water supply is required.

Key Features:

• Capacity: 210,000 BTUs provides substantial hot water output, making it suitable for larger homes or medium-sized commercial spaces with high hot water demands. Handles multiple fixtures simultaneously, including showers, sinks, and appliances.

• Built-In Buffer Tank: The built-in buffer tank is designed to store a small amount of hot water, which helps to reduce the wait time for hot water and maintains a steady supply, especially in situations where there are fluctuations in demand.

• Enhanced Performance: The buffer tank helps to minimize temperature fluctuations and ensures that hot water is available more quickly and consistently, enhancing overall comfort and convenience.

• High Efficiency: Features a condensing technology that captures and reuses heat from exhaust gases, leading to high energy efficiency and lower operating costs.

• Reduced Standby Losses: The buffer tank helps to reduce standby heat losses compared to traditional tank-style water heaters by keeping a small reserve of hot water ready for use.

• Space-Saving: Despite the built-in buffer tank, the unit maintains a compact, wall-mounted design that saves valuable floor space and allows for flexible installation.

• Durable Construction: Built with high-quality materials to ensure long-lasting reliability and performance.

• Smart Controls: Includes a sophisticated control system that allows for precise temperature adjustments, scheduling, and system diagnostics, providing ease of use and enhanced performance monitoring.

• User-Friendly Interface: Features an intuitive interface for easy temperature setting and operational management.

• Overheat Protection: Equipped with overheat protection to prevent excessive temperatures and ensure safe operation.

• Freeze Protection: Includes freeze protection to prevent damage in cold climates, ensuring reliable operation even in freezing conditions.

• Versatile Venting Options: Offers flexible venting options, including both concentric and twin-pipe configurations, suitable for various installation requirements.

• Indoor and Outdoor Installation: Can be installed indoors or outdoors, depending on the model and local regulations.