Programmable Thermostat, 3H/2C Heat Pump, 2H/2C Conventional, T6 Pro
32 Available At All US Supply Locations

Honeywell TH6320U2008/U T Series Programmable Thermostat – Multi-Stage Control for Heat Pump and Conventional Systems
The Honeywell T Series TH6320U2008/U thermostat is engineered for compatibility with a wide range of residential HVAC applications, including up to 3 heat/2 cool heat pump systems and 2 heat/2 cool conventional systems. It provides precise temperature control with selectable programming modes and a 1°F differential to support energy efficiency and system performance.
Application Overview
Designed with contractors in mind, the T Series thermostat uses the Universal Wall Plate (UWP) system for efficient installation and service. The thermostat can operate in programmable or non-programmable modes (7-day, 5-1-1, or 5-2), allowing flexibility based on system requirements and occupant preferences. The unit supports auto or manual changeover and includes a large-format backlit display for visibility in varied lighting conditions.
Key Product Features
- Heating Range: 40°F to 90°F
- Cooling Range: 50°F to 99°F
- Control Accuracy: ±1°F differential
- Mounting: UWP backplate with included mounting hardware
- Display: 5.44 sq-in LED backlit interface
- Power Options: 20–30 VAC hardwired or battery-powered (2 AA included)
- Terminal Designations: RC, R, C, W, W2/AUX, Y, Y2, O/B, G, K, E, L/A, S1, S2
- Changeover Mode: Selectable auto or manual
Environmental and Physical Parameters
- Operating Temperature: 37°F to 102°F
- Humidity Tolerance: 5% to 90% RH, non-condensing
- Dimensions: 4-1/16" H x 4-1/16" W x 1-3/32" D
Installation Notes
For optimal performance and code compliance, installation should be performed by qualified HVAC personnel. Basic electrical tools are required. The UWP bracket simplifies retrofit or new installations and reduces time on site. Configuration settings can be adjusted directly through the interface without specialized equipment.
Included Components
- Universal Wall Plate with terminal block
- Mounting hardware and cover plate
- 2 AA backup batteries
- Installation and setup guide
Specifications
| Weight | 0.810000 |
|---|---|
| Length (inches) | 6 |
| Width (inches) | 4.06 |
| Item Type | Thermostats |
| Brand | Honeywell |
| Contact Rating | 20/30V AC |
| Display Type | Backlit |
| Humidity Range | 5% to 90% RH |
| MPN | TH6320U2008/U |
| Overall Depth | 1.09 in |
| Programs per Week | 7, 5-2, 5-1-1 |
| Stages Cool | 2 |
| Stages Heat | 3 |
| Warranty | 5 Years |
| Temperature Settings per Day | 0, 1, 2, 4 |
| Color | White |
| Connection Type | Hardwired |
| Control Range | 40 Deg to 99 Deg F |
| Differential | 1 Deg F |
| Domestic/Import | Import |
| Fan Switching | Yes |
| Height (inches) | 4.06 |
| Mounting Type | UWP Mounting System |
| Number of Stages | 5 |
| Number of Zones | 1 |
| Overall Width | 4.06 in |
| Power Source | Battery |
| Switch Type | Relay |
| System Switching | Auto-Heat-Cool-Off-Emergency |
| Thermostat Type | Programmable |
| Application | Heat and Cool |
| Includes | Universal Wall Plate Mounting System, Mounting Hardware, J Box Adapter, Decorative Cover Plate, Installation Instructions and User Guide |
| Primary Voltage | 20/30 VAC |
| Item Returns | This item can be returned |
