{"product_id":"yth9421c1010-honeywell-visionpro-iaq-total-home-comfort-system-thermostat","title":"YTH9421C1010 | Honeywell VisionPRO IAQ Total Home Comfort System Thermostat","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe YTH9421C1010 is an advanced total home comfort thermostat from Honeywell's VisionPRO IAQ series. Designed for flexible HVAC system control, it offers multi-stage heating and cooling support, remote sensing, and a user-friendly touchscreen interface.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"height: 512.203px; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 36.6875px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 36.6875px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eCondition\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 36.6875px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.8125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.8125px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.8125px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eHoneywell\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.8125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.8125px;\"\u003eCategory\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.8125px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eControls \u0026amp; Indicators\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.3125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 24.3125px;\"\u003e\u003cspan\u003ePart Number\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 24.3125px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003eYTH9421C1010\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 32.25px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 32.25px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 32.25px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eThermostat\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 25.3438px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 25.3438px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eDisplay\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 25.3438px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eTouchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 31.6094px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 31.6094px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eSystem Compatibility\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 31.6094px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eDual fuel, heat pump, conventional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.6094px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 39.6094px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eStages (Dual Fuel HP\/Gas)\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 39.6094px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e2 Heat \/ 2 Cool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.6094px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 20.6094px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eStages (Heat Pump)\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 20.6094px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e4 Heat \/ 2 Cool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.8125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.8125px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eStages (Conventional)\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.8125px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e3 Heat \/ 2 Cool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 32.5938px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 32.5938px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eProgramming\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 32.5938px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e7-day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.3125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 24.3125px;\"\u003eFan Control\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 24.3125px;\"\u003eOn \/ Auto \/ Circulate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 27.4844px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 27.4844px;\"\u003eProgrammable Fan\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 27.4844px;\"\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.8125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.8125px;\"\u003eMillivolt Compatibility\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.8125px;\"\u003e\u003cspan\u003eNo\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 58.7812px;\"\u003eTerminal Connections\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 58.7812px;\"\u003e\u003cspan\u003e1, 2, 3, C, R, Rc, Rh, W1-O\/B, W2-Aux, W3-Aux2, Y, Y2, G, L, Out1, Out2, In1, In2, Dats1, Dats2, Hum1, Hum2, Dhm1, Dhm2, Vnt1, Vnt2\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.8125px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.8125px;\"\u003eSystem Switch Positions\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.8125px;\"\u003e\u003cspan\u003eCool \/ Auto \/ Heat \/ EM Heat \/ Off\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.6094px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 39.6094px;\"\u003eDimensions (W x H x D)\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 39.6094px;\"\u003e\u003cspan\u003e6 x 4-9\/16 x 1-1\/4 in.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.9375px;\"\u003e\n\u003cth style=\"width: 35.0909%; text-align: left; height: 19.9375px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 64.5455%; height: 19.9375px;\"\u003e\u003cspan\u003e2.25 lbs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eYTH9421C1010\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe YTH9421C1010 is a professional-grade thermostat designed to manage a wide range of HVAC configurations, including dual fuel systems, heat pumps, and conventional heating\/cooling. It supports up to 4 stages of heat and 2 stages of cool for heat pumps and 3H\/2C for conventional systems. Featuring a large touchscreen display, the thermostat provides intuitive access to settings, schedules, and diagnostics. It includes both indoor and outdoor remote sensors (C7189U1005 and C7089U1006), allowing the system to respond more accurately to real-world conditions. With its 7-day programming, programmable fan, and broad terminal compatibility, this model is ideal for homes requiring precise, customizable comfort control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComprehensive HVAC Support: Manages up to 4 heat\/2 cool stages for heat pumps, 3H\/2C for conventional systems, and 2\/2 for dual fuel setups, making it compatible with complex residential installations.\u003c\/li\u003e\n\u003cli\u003eTouchscreen User Interface: Provides a clear, responsive interface for temperature control, scheduling, and system configuration, improving ease of use for homeowners and technicians.\u003c\/li\u003e\n\u003cli\u003eRemote Sensors Included: Comes with an outdoor sensor (C7089U1006) and supports an optional indoor sensor (C7189U1005), enhancing system responsiveness to temperature variations.\u003c\/li\u003e\n\u003cli\u003eDual Fuel Ready: Capable of integrating heat pump and gas systems intelligently without additional relays or controls, maximizing energy efficiency and comfort.\u003c\/li\u003e\n\u003cli\u003eFlexible Terminal Connections: Supports a wide array of inputs and outputs including humidification, dehumidification, and ventilation controls, with terminals like W1-O\/B, W2-Aux, Hum1\/2, Dhm1\/2, and Vnt1\/2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe YTH9421C1010 combines high-end control features with system versatility, making it suitable for modern homes with advanced comfort requirements. Its integrated touchscreen, sensor capabilities, and staging flexibility provide a truly tailored climate experience.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105298915584,"sku":"YTH9421C1010","price":1040.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/e88cd12f929b46984cdc70998187827c.jpg?v=1785544403","url":"https:\/\/alotechparts.com\/products\/yth9421c1010-honeywell-visionpro-iaq-total-home-comfort-system-thermostat","provider":"Alo Tech Solutions","version":"1.0","type":"link"}