Comfort™ Non-Programmable Thermostat TC-NAC01 Just Set It and Forget It This Comfort non-programmable, large-screen thermostat keeps it simple with easy instructions printed right inside the door. It’s a breeze to maximize your comfort using this electronic thermostat configured for systems using an air conditioner for cooling. Standard Features Large, illuminated display Auto changeover between heating and cooling Fixed-schedule based filter replacement reminders 10-year parts limited warranty1 Optional Features Application of remote sensor to feed information to the main control from a different location Compatible with 3-zone panel systems: ZONECC3ZHP01 and ZONECC3ZAC01 1 To the original owner, when product is used in an owner-occupied residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details.