Rheem’s smart electronic control system keeps water flow and burner operation precisely balanced, maintaining steady temperatures even with fluctuating water demand. The unit’s pre-set 50°C option removes the need for a separate tempering valve, streamlining installation and enhancing safety. Equipped with a frost protection system, this heater is safeguarded against damage in freezing conditions, making it suitable for colder climates as well. An integrated digital display provides real-time monitoring of water temperature and diagnostic data for easy servicing, while the Rheem Q Factor™ ensures water temperature consistency, even when multiple fixtures are demanding hot water simultaneously.
Additional safety and efficiency features include the Flamesafe® overheat protection, which automatically shuts down the system if it reaches unsafe temperatures, and a low minimum flow rate of just 1.5 L/min, making it compatible with flow-regulated taps. Designed for internal installation and available with a natural gas configuration, this Rheem model combines reliable performance, cutting-edge technology, and the capacity to handle the highest household demands with ease.

Continuous Hot Water
The Rheem Ultra 28L Gas Continuous Flow Water Heater guarantees an endless supply of hot water, perfect for high-demand households. Its advanced design ensures you’ll never run out, delivering continuous, efficient, and reliable hot water on demand.

Flame Safe
The Rheem 28L Continuous Flow Hot Water System features Flamesafe overheat protection, automatically shutting down the unit to prevent overheating. This advanced safety feature ensures reliable, worry-free hot water performance while maintaining exceptional energy efficiency and durability.

Rheem Q Factor
Equipped with Rheem Q Factor™, this 28L Internal Continuous Flow Hot Water System ensures rapid, consistent hot water delivery every time, eliminating the temperature fluctuations common in other systems and providing a reliably comfortable experience for every use.

Made In Japan
Crafted in Japan, the Rheem 28L Internal Continuous Flow Hot Water System delivers exceptional quality and performance. Designed for larger households, it provides reliable, energy-efficient hot water on demand, compact and space-saving design.