Honeywell Thermostat YTH9421C1002. The Honeywell YTH9421C1002 Visionpro IAQ 7-Day Programmable Comfort System Thermostat is designed for Up to 3 Heat/2 Cool Conventional Systems and Up to 4 Heat/2 Cool Heat Pumps.

Honeywell VisionPRO IAQ
Thermostat offers electronic control of 24 Vac heating and cooling systems in addition to humidification, dehumidification and also ventilation all with just 3 wires to the thermostat..

Honeywell Thermostat YTH9421C1002 offers you top of the line features such as touchscreen interaction, a real time clock, and a large backlit display for easy to read.

Features with advanced dual fuel control.

Three wires to the living space provides for easy equipment upgrade without having to run additional thermostat wire.

This universal thermostat connects with Equipment Interface Module or Envira ZONE panel to management of humidification, temperature, dehumidification and ventilation from a single point in your home.

Automatically raises humidity levels throughout all rooms in the home for moisturizing air to prevent symptoms of dryness and to protect hardwood flooring and also woodwork.

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Removes air pollutants by exchanging the stale air in a house with fresh and filtered air better than having an open window……..by Honeywell Visionpro IAQ Honeywell Thermostat YTH9421C1002.