Energy-Calcâ„¢ is an online program that estimates dollars saved by using gas humidification rather than electric humidification. According to the company, the program gives owners the financial data necessary to determine whether it makes sense to switch to gas, given the particular location, energy costs, and humidifier use.

Dri-Steem Humidifier Co., 14949 Technology Dr., Eden Prairie, MN 55344; 800-328-4447 or 952-949-2415; 952-229-3200 (fax); sales@dristeem.com; www.dristeem.com.