This week’s gallery focuses on these HVAC products: an industrial fiberglass damper and louver line; a centrifugal chiller with two-stage back-to-back compressor load cancellation; a side-discharge, single-stage, low-profile heat pump; a lead-free 759 ball valve product line; a hybrid 80-gal. commercial water heater; an air-handler with programmable variable-speed blower motor; and a kit that removes nonmagnetic debris from hydronic heating systems.