The S-Class™ 35- to 50-ton packaged rooftop line features single-zone, bypass zoning, and zoning applications for commercial buildings. The units have a rating of up to 10.8 EER and 13.2 IPLV. Some units use R-22; select units use R-410A refrigerant. S-Class units feature factory-installed options such as integral energy recovery wheels, economizers, demand control ventilation, and variable-frequency drives to control operating costs while protecting thermal comfort and air quality. Features include the Humiditrol® dehumidification system, double-wall construction, and MERV 11 filters.

Lennox, Dallas, TX, www.lennox.com

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