Originally published: 7/6/2026
The upgraded Tranquility SB units feature low-GWP refrigerant R-454B, dual refrigeration circuits, and smart controls, offering a versatile, eco-friendly solution for various water-source heat pump applications.
ClimateMaster announced the addition of hot gas reheat to its Tranquility SB compact high-capacity series.
The new hot gas reheat option allows the Tranquility SB to effectively manage latent loads without overcooling occupied spaces, making it ideal for schools, health care facilities, multifamily buildings, and other humidity-sensitive environments. By reheating air using recovered heat from the refrigeration cycle, the system improves moisture removal while minimizing energy consumption. Additionally, the standard vFlow modulating water valve maintains head pressure for enhanced reheat capacity on colder building loops.
Exceeding ASHRAE 90.1 efficiency requirements and operating with low-GWP R-454B refrigerant, the Tranquility SB Series continues to offer a high-capacity, environmentally responsible solution for modern water-source heat pump applications. Units are available in 6- to 25-ton capacities and feature a compact vertical cabinet that fits through standard doorways, along with backward compatibility with legacy equipment to simplify retrofit installations.
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