Thermostats

Prestige IAQ Comfort System

Finally, a thermostat that can control up to three whole-house systems

You like to be control, and our Prestige® IAQ Comfort System is happy to oblige. With this one thermostat, you can control up to three whole-house systems, including humidifier, dehumidifier, air-conditioner and ventilation. But we didn’t stop there. There’s also a high-definition, full-color display that’s easier to read. And optional add-ons such as the Portable Comfort Control that allows you to adjust temperature from anywhere in the home. For convenience, control and comfort, this thermostat delivers.

  • Seven-day programming
  • Simple touch-screen technology
  • Displays outdoor temperature and humidity (with Wireless Outdoor Air Sensor)
  • Trilingual (displays in English, Spanish or French)
  • Five-year warranty
  • Professional installation
High-Definition, Full-Color Display
It’s visually stunning and easy to read.
Interview-Based Programming
The system interviews you and uses your answers to program itself. No need to work through complicated settings and instructions.
Temperature Control on Demand
Check/change temperature from anywhere in the home (with Portable Comfort Control)
Time-of-Use Scheduling
Automatically adjusts your home’s temperature based on utility pricing to help save you money on energy costs
System Diagnostics
System alerts you to potential issues before they occur, so you can take action
Specs
  • Model numbers: YTHX9421R5085WW, YTHX9421R5101WW, YTHX9421R5127WW
  • Kit options Includes: Prestige® 2-Wire IAQ Thermostat, Equipment Interface Module, RedLINK™ Internet Gateway. Wireless Outdoor Sensor. Duct Sensors
  • Thermostat Dimensions: 3-1/2 in. High X 4-1/2 in. Wide 7/8 in. Deep

FREQUENTLY ASKED QUESTIONS

No. Each thermostat can only be controlled by one Portable Comfort Center. But you can connect up to 16 different thermostats to one Portable Comfort Center to easily control multiple zones.

Yes. When connected with an Outdoor Sensor, select thermostats and devices will display the outdoor temperature and humidity on the screen.
The thermostat has a feature called Adaptive Intelligent Recovery(AIR) or Smart Response or Early Start. This allows the thermostat to "learn" how long the heating and cooling system will take to reach the programmed temperature settings. So the temperature is reached at the time you set.
There are several items you can check. First check that the thermostat is set to the Cool position. Make sure the temperature is set lower than the Inside temperature reading. Also check the circuit breaker and reset if necessary. Make sure that the furnace door is closed securely. If “wait” is in the screen or “cool on” is flashing – wait 5 minutes for the system to safely respond. The thermostat will indicate it is asking for the cooling to turn on when "cool on" or a "snowflake" in the display. If this message is in the display, the thermostat is asking for the heat to be on and there is a likely a problem outside of the thermostat preventing the cooling from running.
There are several items you can check. First check that the thermostat is set to the Heat position. Make sure the temperature is set higher than the Inside temperature reading. Also check the circuit breaker and reset if necessary. Make sure that the furnace door is closed securely. If “wait” is in the screen or “heat on” is flashing – wait 5 minutes for the system to safely respond. The thermostat will indicate it is asking for the heat to turn on when "heat on" or a "flame" in the display. If this message is in the display, the thermostat is asking for the heat to be on and there is a likely a problem outside of the thermostat preventing the heat from running.

If we weren't able to answer your question please contact our Support team or use our Live Chat service.

RESOURCES

Download PDF
Prestige IAQ Comfort System Owner's Manual
Model: YTHX9421
English,French,Spanish
Download PDF
Prestige IAQ Comfort System Installation Manual
Model: YTHX9421
English
Download PDF
Prestige IAQ Comfort System Installation Manual
Model: YTHX9421
English,French,Spanish
Download PDF
Prestige IAQ Comfort System Installation Manual
Model: YTHX9421
English,French,Spanish