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Honeywell YTHX9421R5085WW
Redesigned Prestige IAQ Kit, 4 Stage Heat / 2 Cool, with HD Touchscreen and Equipment Interface Module

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$211.99
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The Prestige® IAQ thermostat is a 2 wire high definition color touch screen thermostat, 7 day programmable and selectable for residential or light commercial use. Controls up to 4-stages of heat and 2-stages of cool in a heat pump system and up to 3-stages of heat and 2-stages of cool in a conventional system. Three sets of Universal IAQ contacts to control humidification, dehumidification, and ventilation. Four sensor inputs for wired sensors or dry contact devices. Works with the Equipment Interface Module and RedLINK® accessories including the RedLINK® Internet Gateway, Portable Comfort Control, Wireless Outdoor Sensor and Wireless Indoor Sensor.

  • Control humidification, dehumidifcation or ventilation
  • Adaptive Intelligent Recovery—over time, the Prestige thermostat “learns” how long it takes your system to reach the temperature you want. It turns on the heating or cooling system earlier to make sure you’re comfortable at the time you expect.
  • Dealer information on the screen—making it easy for you to contact your dealer for service.
  • Vacation and holiday scheduling—allowing you to program a setback temperature to save energy while you are away.
  • Keypad lockout to prevent unauthorized changes.
  • Equipment status—provides on/off status of all equipment controlled by the thermostat.
  • RedLINK™ wireless communication
  • Selectable for residential and light commercial applications. Meets commercial code and is title 24 compliant.
  • Tri-lingual - English, French and Spanish display options.
  • Performance Logs - Keeps a history of heating and cooling performance.

Included in the Honeywell YTHX9421R5085WW Box:
  • 1 Redesigned Prestige IAQ Thermostat
  • 1 Equipment Interface Module
  • 2 Duct Sensors
Manual/Digital
Digital  

Stages of Heat
4 w/ Heat Pump  

Touchscreen
Yes  

Stages of Cool
2  

Programming Days
7  

Use with Heat Pump
Yes  

Power Method
Hardwired  

Millivolt
No  

Use with Gas/Oil
Yes  

Use with Electric Furnace
Yes  

Programmable Fan
Yes  

Resume / Adaptive Intelligent Recovery Capability
Yes  

ENERGY STAR® Qualified
No  

Backlit Display
Yes  

Outdoor Temperature Sensor Capability
Yes  

Indoor Temperature Sensing Capability
Yes  

On-Screen Help
Yes  

Auto Changeover
Yes  

Filter Indication
Yes  

Humidifier Panel Indication
Yes  

Humidity Control
Yes  

Line Voltage Capable
No  

Vacation Hold
Yes  

Keypad Lockout
Yes  

Remote Accessible
Yes With RedLINK Gateway  

Color
White  

Width
6 7/8 Inches 

Depth
1 1/2 Inches 

Height
3 15/16 Inches 

Limited Warranty
5 Years  
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