Will it work with your system?
Works well with
- A weekly schedule without an app
- Furnace and central air systems
Check first if you have
- Phone or voice control
- Line-voltage baseboard heat
What it controls
The Honeywell Home TH6320WF2003/U Programmable Thermostat is a programmable. Its listing doesn't spell out which heating and cooling systems it supports, so run the maker's compatibility checker before you buy.
On power, the listing doesn't say whether it needs a C wire. What a C wire does.
The maker states heat pump support ("Honeywell TH6320WF2003/U Lyric T6 Thermostat, 3 Heat / 2 Cool Heat Pump Or 2 Heat / 2 Cool"), so it can drive an O/B reversing valve. What a heat pump needs from a thermostat.
Stages, per the maker: 3 Heat / 2 Cool. A second-stage wire (W2 or Y2) at your old thermostat needs matching support here. Single- and two-stage systems.
Power, per the listing: C-Wire.
Not sure of your wiring? The wiring checker reads your system from the terminal letters and checks it against this model's statements.
Also on the listing: dimensions of 4.09 in (D) x 4.09 in (W) x 1.06 in (H), a weight of 12 ounces and a lcd.
Warranty, per the listing: 5-year warranty.
Compatibility and specs
These come from the maker's listing for this exact model; the source of each is marked. Anything the maker leaves out is marked not stated.
| Model number | TH6320WF2003/U | Retailer |
|---|---|---|
| Model name | T6 Pro Smart Wi-Fi Programmable Thermostat | Retailer |
| Dimensions (seller) | 4.09"D x 4.09"W x 1.06"H | Retailer |
| Works with | Amazon Alexa | Retailer |
| Features (seller) | Auto-Scheduling, Programmable | Retailer |
| Connectivity | Ethernet | Retailer |
| Power | C-Wire | Retailer |
| Voltage | 24 V | Retailer |
| Display | LCD | Retailer |
| Mounting / installation | Wall Mount | Retailer |
| Batteries | 2 AA batteries required. | Retailer |
| Material | Plastic | Retailer |
| Warranty | 5-year warranty. | Retailer |
| Product weight | 12 ounces | Retailer |
| Heat / cool stages | 3 Heat / 2 Cool | Retailer |
| Heat pump support | Honeywell TH6320WF2003/U Lyric T6 Thermostat, 3 Heat / 2 Cool Heat Pump Or 2 Heat / 2 Cool Conventional, 4 | Retailer |
Strong points and weak points
Strong points
- Power: C-Wire
- No Wi-Fi or account needed
- Heat pump support stated
Weak points
- No remote control
- Systems not stated
Wiring and install notes
- Compatibility statements are the maker's own. Confirm with the maker's compatibility checker, turn the power off before wiring, and leave line-voltage and furnace work to a licensed electrician or HVAC technician.
Thermostats to compare it with
FAQ
Does the Honeywell Home TH6320WF2003/U Programmable Thermostat need a C wire?
What systems does the Honeywell Home TH6320WF2003/U Programmable Thermostat work with?
Other programmable and basic thermostats with similar wiring
- White-Rodgers 1F95-1277 Programmable Thermostat
- Honeywell Home TH8320R1003 Programmable Thermostat
- Honeywell Home TH8110R1008 Programmable Thermostat
- Honeywell Home CT33A1009/N Millivolt Thermostat
All programmable and basic thermostats in one grid · Every Honeywell Home control listed
Our take
Suited to A weekly schedule without an app.
Where to get it
The link goes to this exact model's listing. Check that the box includes the trim plate or C-wire adapter you need, and confirm your wiring with the maker's compatibility checker before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure