Wi-Fi VisionPRO 8000 Programmable, 3H/2C, Touchscreen Thermostat, TH8321WF1001

The Honeywell Home Wi-Fi VisionPRO 8000 is a programmable touchscreen thermostat designed for multi-stage heat pump and conventional HVAC systems, supporting up to 3 heat and 2 cool stages. This thermostat connects directly to your existing 2.4 GHz Wi-Fi network, allowing remote control and monitoring through the free Total Connect Comfort app from any smartphone, tablet, or computer. Built for both residential and light commercial applications, the VisionPRO 8000 combines 7-day programmable scheduling with integrated humidity and ventilation control. The large color touchscreen simplifies setup and daily adjustments, while built-in equipment reminders help maintain system efficiency over time.

• Wi-Fi Connectivity: Connects to your existing 2.4 GHz home Wi-Fi network without requiring a separate gateway or hub. Remote access through the Total Connect Comfort app lets you adjust temperature, view equipment status, and receive alerts from anywhere, giving you control whether you're at home or away.

• Multi-Stage System Compatibility: Supports up to 3 heat and 2 cool stages for heat pump systems, or 2 heat and 2 cool stages for conventional systems, including dual fuel configurations. This flexibility means the thermostat works with a wide range of HVAC equipment without the need for additional adapters or controllers.

• 7-Day Programmable Scheduling: Offers a single-screen programming process that simplifies creating custom temperature schedules for each day of the week. Intuitive scheduling helps reduce energy waste during unoccupied hours while maintaining comfort when you need it.

• Built-In Ventilation Controller: Includes lockouts for temperature and humidity to prevent pulling in hot or humid outdoor air during ventilation cycles. This integrated control eliminates the need for a separate ventilation controller or remote sensors, reducing installation complexity and equipment cost.

• Touchscreen Interface with Large Display: Features a color touchscreen with clear, easy-to-read temperature and status information. The responsive interface reduces setup time and makes daily adjustments straightforward for any user.

• Humidity and Dehumidification Control: Provides direct control over compatible humidification and dehumidification equipment through dedicated terminals. Integrated humidity management improves indoor air quality and comfort without external controllers.

• Equipment Maintenance Reminders: Displays customizable reminders for filter changes, humidifier pad replacement, and UV bulb service based on runtime or calendar intervals. These alerts help prevent equipment damage and maintain system efficiency by prompting timely maintenance.

• Auto Changeover with Configurable Staging: Automatically switches between heating and cooling modes as needed, with adjustable differential settings between stages to balance comfort and energy conservation. Backup heat droop settings (2 to 15 degrees) control when emergency or auxiliary heat engages, preventing unnecessary use of expensive resistance heat.

The TH8321WF1001 works with heat pump systems up to 3 heat and 2 cool stages, and conventional systems up to 2 heat and 2 cool stages. It requires 24V AC power and supports both horizontal mounting configurations. The thermostat connects to standard HVAC terminals (R, RC, C, W, O/B, W2, AUX/E, Y, Y2, G, A, L/A, K, U1, S1) and operates in ambient temperatures from 32°F to 120°F with 10 to 60 percent relative humidity. A 2.4 GHz Wi-Fi network is required for remote access features. Optional wired outdoor temperature sensors (such as the C7089U1006) and indoor remote sensors (such as the C7189U1005) are available but sold separately.

The thermostat mounts horizontally on a standard electrical box or wall plate and connects via quick-connect terminals with a built-in, removable check valve for simplified wiring. Professional installation by a licensed HVAC technician is required. The thermistor sensor element requires no routine calibration, and the system is designed for maintenance-free operation beyond periodic screen cleaning with a soft, dry cloth.

• Wi-Fi VisionPRO 8000 thermostat (TH8321WF1001)
• Mounting hardware
• Quick start guide
• Installation instructions

The thermostat is backed by a 5-year manufacturer warranty. Support and product documentation are available through Honeywell Home customer service channels and the Total Connect Comfort platform.

A: The VisionPRO 8000 uses a single-screen programming process accessible from the main menu. Press the menu button on the home screen, navigate to the schedule settings, and use the touchscreen to set temperature and time periods for each day of the week. The 7-day programmable schedule allows you to create different settings for each day, or copy a schedule across multiple days. All programming can also be completed remotely through the Total Connect Comfort app once the thermostat is connected to your Wi-Fi network.

A: No, the VisionPRO 8000 does not use batteries. It is hardwired to your HVAC system and receives continuous 24V AC power through the C (common) wire connection. This hardwired power method eliminates the need for battery replacements and ensures the Wi-Fi connection and programming remain active at all times.