Lennox Commercial has expanded its light commercial Raider® rooftop unit line to include the new Raider 6-ton unit available in gas/electric and electric/electric configurations and the new 14 SEER units, available in 3-5 tons. The addition of the new Raider 6-ton rooftop unit rounds out the Raider portfolio.
Johnson Controls launched the new York® Prestige™ rooftop units, which match the footprints of other manufacturers’ units. The new design reduces installation complexities and saves contractors time by eliminating the need for a curb adapter, which is typically required when a new unit does not identically match the existing unit footprint.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.