





TH9421C1004 | Honeywell VisionPRO IAQ Touchscreen Thermostat
- Regular price
- $719.00
- Sale price
- $719.00
- Regular price
-
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Product Description P/N: TH9421C1004
Description
The Honeywell TH9421C1004 VisionPRO IAQ thermostat is a premium programmable touchscreen thermostat that provides precise comfort control for complex HVAC systems, including up to 4 stages of heating and 2 stages of cooling for heat pumps, and 3 heat/2 cool conventional systems.
Technical Specifications
Condition | New/Never Used Surplus |
---|---|
Brand | Honeywell |
Category |
Controls & Indicators
|
Part Number | TH9421C1004 |
Subcategory | Thermostat |
Series | VisionPRO IAQ |
Application | Multi-Stage (3 Heat/2 Cool Conventional, 4 Heat/2 Cool HP) |
Programmability | 7-Day |
User Interface | Touchscreen (10 sq-in universal display) |
Power Source | Communicating (20–30 VAC) |
Mounting Type | Horizontal |
Humidity Control | Yes (10–60% RH humidification, 40–80% RH dehumidification) |
Temperature Settings | Heating: 40–90°F, Cooling: 60–99°F |
Differential Temperature | ±1°F |
Changeover | Auto / Manual |
Fan Control | Auto / On / Circulate |
Power Rating | 12 to 30 W |
Amperage Rating | 0.6 to 1 A |
Frequency | 50/60 Hz |
Voltage Rating | 20 to 30 VAC |
Humidity Range | 5 to 90% RH (non-condensing) |
Sensing Element | Thermistor |
Dimensions (HxWxD) | 4-9/16" × 6" × 1-1/4" |
Color | Premier White |
Wiring Terminals | 1, 2, 3, C, RH, R, RC, Y, Y2, G, L, Vnt2 |
Wireless | No |
Battery Info | Lithium metal (contained in equipment) |
Weight | 3.00 lbs |
Information About TH9421C1004
The TH9421C1004 is ideal for residential and light commercial applications requiring advanced climate control with minimal wiring. It features dual-fuel control for heat pump systems, built-in humidity control, and compatibility with indoor air quality devices. The touchscreen interface enhances user experience, and the unit supports both automatic and manual changeover. Its programming capability allows for 7-day custom schedules, making it suitable for varying daily needs. The thermostat contributes to energy efficiency while improving occupant comfort and indoor air quality.
Key Features:
- Advanced Dual-Fuel Control: Automatically manages heat pump and backup heat sources for maximum efficiency.
- Touchscreen Interface: Large 10 sq-in backlit touchscreen for intuitive control and programming.
- Three-Wire Installation: Simplifies upgrades and retrofits by reducing wiring requirements.
- IAQ Integration: Manages temperature, humidity, and ventilation from one interface.
- Auto Changeover: Switches between heating and cooling modes as needed.
- Real-Time Clock: Maintains time during power failures for accurate scheduling.
- Humidity Management: Supports 10–60% RH humidification and 40–80% RH dehumidification ranges.
- Clean Air Ventilation: Facilitates air exchange to remove indoor pollutants effectively.
- Energy Efficient Scheduling: 7-day programming for customized energy savings.
- Premier White Design: Clean, modern appearance blends with residential décor.
Description
The Honeywell TH9421C1004 VisionPRO IAQ thermostat is a premium programmable touchscreen thermostat that provides precise comfort control for complex HVAC systems, including up to 4 stages of heating and 2 stages of cooling for heat pumps, and 3 heat/2 cool conventional systems.
Technical Specifications
Condition | New/Never Used Surplus |
---|---|
Brand | Honeywell |
Category |
Controls & Indicators
|
Part Number | TH9421C1004 |
Subcategory | Thermostat |
Series | VisionPRO IAQ |
Application | Multi-Stage (3 Heat/2 Cool Conventional, 4 Heat/2 Cool HP) |
Programmability | 7-Day |
User Interface | Touchscreen (10 sq-in universal display) |
Power Source | Communicating (20–30 VAC) |
Mounting Type | Horizontal |
Humidity Control | Yes (10–60% RH humidification, 40–80% RH dehumidification) |
Temperature Settings | Heating: 40–90°F, Cooling: 60–99°F |
Differential Temperature | ±1°F |
Changeover | Auto / Manual |
Fan Control | Auto / On / Circulate |
Power Rating | 12 to 30 W |
Amperage Rating | 0.6 to 1 A |
Frequency | 50/60 Hz |
Voltage Rating | 20 to 30 VAC |
Humidity Range | 5 to 90% RH (non-condensing) |
Sensing Element | Thermistor |
Dimensions (HxWxD) | 4-9/16" × 6" × 1-1/4" |
Color | Premier White |
Wiring Terminals | 1, 2, 3, C, RH, R, RC, Y, Y2, G, L, Vnt2 |
Wireless | No |
Battery Info | Lithium metal (contained in equipment) |
Weight | 3.00 lbs |
Information About TH9421C1004
The TH9421C1004 is ideal for residential and light commercial applications requiring advanced climate control with minimal wiring. It features dual-fuel control for heat pump systems, built-in humidity control, and compatibility with indoor air quality devices. The touchscreen interface enhances user experience, and the unit supports both automatic and manual changeover. Its programming capability allows for 7-day custom schedules, making it suitable for varying daily needs. The thermostat contributes to energy efficiency while improving occupant comfort and indoor air quality.
Key Features:
- Advanced Dual-Fuel Control: Automatically manages heat pump and backup heat sources for maximum efficiency.
- Touchscreen Interface: Large 10 sq-in backlit touchscreen for intuitive control and programming.
- Three-Wire Installation: Simplifies upgrades and retrofits by reducing wiring requirements.
- IAQ Integration: Manages temperature, humidity, and ventilation from one interface.
- Auto Changeover: Switches between heating and cooling modes as needed.
- Real-Time Clock: Maintains time during power failures for accurate scheduling.
- Humidity Management: Supports 10–60% RH humidification and 40–80% RH dehumidification ranges.
- Clean Air Ventilation: Facilitates air exchange to remove indoor pollutants effectively.
- Energy Efficient Scheduling: 7-day programming for customized energy savings.
- Premier White Design: Clean, modern appearance blends with residential décor.


