This company says it has improved upon its popular line of L Series" commercial packages rooftop units. Standard models now have higher efficiencies to company with ASHRAE standard 90.1-1999 (Energy Standard for Buildings Except Low Rise Residential Buildings). The units' Humiditrol option reduces the potential for mold and bacteria growth by lowering humidity levels in the room.

Lennox Industries Inc., P.O. Box 799900, Dallas, TX 75379-9900