The new S-Class 3 to 5 ton air conditioners and heat pumps are said to be the most energy efficient commercial split systems and offer excellent temperature and humidity control, says the manufacturer. Their design featuring a two-step scroll compressor allows the units to keep operating costs low, temperatures constant, and humidity levels at a minimum, the company says.

Lennox Industries Inc., 2100 Lake Park Blvd., Richardson, TX 75080; 800-453-6669; www.lennox.com.

Publication date: 01/05/2004