Rheem Professional Classic Series Ultra Low NOx High BTU Models feature .58 - .64 UEF (Uniform Energy Factor) for efficient performance. Select models include side water connections ideal for space heating applications, enhancing versatility. The EverKleen® patented system combats sediment build-up, ensuring long-lasting reliability and efficiency.

These water heaters are designed to meet high BTU demands while maintaining low NOx emissions, making them environmentally friendly. With side water connections and the EverKleen® system, they provide both functionality and durability, making them an excellent choice for various residential and commercial applications.

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