The SunAire™ ultraviolet air-purifying system improves indoor air quality by sterilizing airborne contaminants as they pass through the hvac system, says the company. The unit uses the energy from a specially designed, high-intensity UV-C bulb to eliminate microorganisms such as molds, bacteria, yeasts, dust mites, and viruses which cycle through a home or building, the manufacturer says. Contractors can mount the unit over the coil in the supply plenum, downstream from the air filter in the return plenum, or both.

Field Controls, LLC, 2630 Airport Rd., Kinston, NC 28504; 252-522-3031; 252-522-0214 (fax); (Web site).