YTH9421C1010 | Honeywell VisionPRO IAQ Total Home Comfort System Thermostat
Honeywell · HVAC & Building Controls
Description The 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. Technical Specifications Condition New/Never Used Surplus Brand Honeywell Category Controls & Indicators Part Number YTH9421C1010 Subcategory Thermostat Display Touchscreen System Compatibility Dual fuel, heat pump, conventional Stages (Dual Fuel HP/Gas) 2 Heat / 2 Cool Stages (Heat Pump) 4 Heat / 2 Cool Stages (Conventional) 3 Heat / 2 Cool Programming 7-day Fan Control On / Auto / Circulate Programmable Fan Yes Millivolt Compatibility No Terminal Connections 1, 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 System Switch Positions Cool / Auto / Heat / EM Heat / Off Dimensions (W x H x D) 6 x 4-9/16 x 1-1/4 in. Weight 2.25 lbs Information About YTH9421C1010 The 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. Key Features: Comprehensive 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. Touchscreen User Interface: Provides a clear, responsive interface for temperature control, scheduling, and system configuration, improving ease of use for homeowners and technicians. Remote Sensors Included: Comes with an outdoor sensor (C7089U1006) and supports an optional indoor sensor (C7189U1005), enhancing system responsiveness to temperature variations. Dual Fuel Ready: Capable of integrating heat pump and gas systems intelligently without additional relays or controls, maximizing energy efficiency and comfort. Flexible 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. The 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.
Brand: Honeywell · Category: HVAC & Building Controls
Key features
- Comprehensive 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.
- Touchscreen User Interface: Provides a clear, responsive interface for temperature control, scheduling, and system configuration, improving ease of use for homeowners and technicians.
- Remote Sensors Included: Comes with an outdoor sensor (C7089U1006) and supports an optional indoor sensor (C7189U1005), enhancing system responsiveness to temperature variations.
- Dual Fuel Ready: Capable of integrating heat pump and gas systems intelligently without additional relays or controls, maximizing energy efficiency and comfort.
- Flexible 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.
Specifications
| Manufacturer part number | YTH9421C1010 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | Controls & Indicators |
| Part Number | YTH9421C1010 |
| Subcategory | Thermostat |
| Display | Touchscreen |
| System Compatibility | Dual fuel, heat pump, conventional |
| Stages (Dual Fuel HP/Gas) | 2 Heat / 2 Cool |
| Stages (Heat Pump) | 4 Heat / 2 Cool |
| Stages (Conventional) | 3 Heat / 2 Cool |
| Programming | 7-day |
| Fan Control | On / Auto / Circulate |
| Programmable Fan | Yes |
| Millivolt Compatibility | No |
| Terminal Connections | 1, 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 |
| System Switch Positions | Cool / Auto / Heat / EM Heat / Off |
| Dimensions (W x H x D) | 6 x 4-9/16 x 1-1/4 in. |
| Weight | 2.25 lbs |
| Product type | Thermostat |
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