{"product_id":"honeywell-ythx9421r5127ww-thermostat-responsive-support","title":"YTHX9421R5127WW | Honeywell Prestige IAQ Thermostat with RedLINK Wireless \u0026 Multi-Stage Control","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe Honeywell YTHX9421R5127WW Prestige IAQ Thermostat is a 2-wire, high-definition color touchscreen thermostat for residential or light commercial use. It supports multi-stage heating and cooling, along with integrated IAQ (Indoor Air Quality) management for humidification, dehumidification, and ventilation. Equipped with RedLINK wireless technology and a suite of smart features, it enables precise, convenient, and energy-efficient climate control.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermostats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYTHX9421R5127WW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrestige IAQ Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeat Pump \/ Conventional \/ IAQ Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeat Stages\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 Heat \/ 3 Heat (Conventional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCool Stages\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Cool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProgrammability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7-Day Programmable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUser Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Definition Color Touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Orientation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHorizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWireless Connectivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRedLINK, Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Control Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/- 1°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range (Cooling)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50°F – 99°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Range (Heating)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40°F – 90°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V Low Voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFan Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Changeover\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–90% RH, Non-Condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-23\/25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6-2\/5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-19\/46\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.2 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About YTHX9421R5127WW\u003c\/h4\u003e\n\u003cp data-start=\"268\" data-end=\"990\"\u003eThe YTHX9421R5127WW is part of Honeywell’s Prestige IAQ line, designed for 2-wire connectivity with an Equipment Interface Module. It is compatible with heat pumps, conventional systems, and IAQ devices, supporting multiple stages of heating and cooling. RedLINK wireless communication allows integration with internet gateways, sensors, and remote controls for flexible operation. Its programmable interface, service logs, and customizable alerts provide both users and technicians with actionable data, improving comfort and maintenance efficiency.\u003c\/p\u003e\n\u003cp data-start=\"992\" data-end=\"1011\"\u003e\u003cstrong data-start=\"992\" data-end=\"1009\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMulti-Stage Control: Supports up to 4 heat\/2 cool stages for heat pumps and 3 heat\/2 cool for conventional systems.\u003c\/li\u003e\n\u003cli\u003eIntegrated IAQ Management: Three universal contacts control humidification, dehumidification, and ventilation.\u003c\/li\u003e\n\u003cli\u003eRedLINK Wireless Technology: Connects to RedLINK Internet Gateway, sensors, and remote controls for enhanced convenience.\u003c\/li\u003e\n\u003cli\u003eSmart Schedule: Patented interview-based programming allows fast setup for any lifestyle.\u003c\/li\u003e\n\u003cli\u003ePerformance Monitoring: Delta T alerts, diagnostics, and performance logs track system efficiency and health.\u003c\/li\u003e\n\u003cli\u003eCustomizable Service Reminders: Remind users of maintenance, warranty expiration, or system alerts.\u003c\/li\u003e\n\u003cli\u003eUSB Connectivity: Transfer installer setup, events, holidays, and add custom dealer logos.\u003c\/li\u003e\n\u003cli\u003eTri-Lingual Display: Offers English, French, and Spanish options for versatile usage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe YTHX9421R5127WW delivers the reliability and precision required for advanced residential and light commercial climate and IAQ management.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":50492022030634,"sku":"YTHX9421R5127WW","price":895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/81vTUBxxwQL._SL1500.jpg?v=1755096585","url":"https:\/\/iqelectro.com\/products\/honeywell-ythx9421r5127ww-thermostat-responsive-support","provider":"IQElectro","version":"1.0","type":"link"}