For use in residential and commercial markets, the TZ-4 TotalZone® system offers four zones and provides thermostat and equipment versatility, the company states. The system features a built-in fossil fuel kit, eliminating the need for any additional controls for dual-fuel applications, says the company. It works with single-stage, multi-stage, and heat pump equipment. The system uses virtually any of the company’s four-wire thermostats, multi-stage thermostats, or select heat pump thermostats. When combined with the TAZ-4 Add-A-Zone panel, the TotalZone system can be expended up to 32 zones, according to the manufacturer.

Honeywell, 1985 Douglas Dr. North, Golden Valley, MN 55422; (e-mail); (website).

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