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Honeywell Home Logo - Red - Smaller

YTHX9421R5101WW Basic Prestige Kit plus wireless outdoor sensor

SKU: YTHX9421R5101WW/U

Honeywell Home Logo - Red - Smaller

YTHX9421R5101WW Basic Prestige Kit plus wireless outdoor sensor

SKU: YTHX9421R5101WW/U

One Thermostat. Advanced Whole-Home Comfort

You're in control with the Honeywell Home Prestige® IAQ 2.0 Thermostat. This ENERGY STAR® certified smart thermostat and Basic Prestige Kit lets you control your entire home's comfort via temperature, humidification, air-conditioning and ventilation. In addition, RedLINK® Technology lets you adjust these settings remotely.

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Product Overview

Product Overview

The Prestige® IAQ Thermostat with RedLINK® features an effortless, 7-day programmable color touchscreen that provides control of temperature, dehumidification and ventilation. Its high-definition, full-color display is easy to read. The ENERGY STAR® certified smart thermostat interviews you and uses your answers to program itself.

No need to work through complicated settings and instructions. Optional add-ons include the Portable Comfort Control that allows you to adjust room temperatures from anywhere in the home.

Works with

Our products, apps and services work in harmony with leading smart home ecosystems.

Specifications

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Is Your Home Compatible?

Knowing your home's wiring can make a difference. Follow these step-by-step instructions to identify if your current wiring is compatible with this thermostat.

Getting Started

Get Started

Professional installations gets professional results. Find an authorized professional near you to complete your installation.

Resources

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Product Information for Prestige Touch Screen Thermostat (English, French, Spanish)

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User Guide for Prestige® Touch Screen Thermostat (English)

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User Guide for Prestige® Touch Screen Thermostat (French, Spanish)

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Installation Guide for C7189R Wireless Indoor Sensor (English, French, Spanish)

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Sensor Interno Sem Fio (Portuguese)

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Primary Resideo App

Take It All with You

Gain control over their connected devices from anywhere at any time through the Total Connect® Comfort App. You can monitor and adjust heating and cooling usage, stay on top of indoor humidity levels, and automatically receive email alerts related to safety, comfort and energy. The app works with a wide range of popular connected devices.