Will it work with your system?
Works well with
- Phone control and scheduling
- Systems the maker's checker confirms
Check first if you have
- Line-voltage baseboard heat
- Millivolt gas heaters
What it controls
The Honeywell Home TH8321WF1001 Smart Thermostat is a smart Wi-Fi thermostat. 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 listing doesn't state heat pump support; if you have an O/B wire, confirm with the maker before ordering. Heat pump wiring.
Stages, per the maker: 3 Heat / 2 Cool. Compare that with the W2 and Y2 wires at your wall. Reading stages from your wires.
Connectivity: Wi-Fi. It amazon Alexa.
Tick your terminals in the wiring checker to see whether its maker's statements cover your system.
Also on the listing: dimensions of 1.14 in (D) x 4.96 in (W) x 4.65 in (H), a weight of 12.8 ounces and a digital.
Warranty, per the listing: 1 year seller; 5 years manufacturer with proof of professional installation.
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 | TH8321WF1001 | Retailer |
|---|---|---|
| Model name | Honeywell | Retailer |
| Dimensions (seller) | 1.14"D x 4.96"W x 4.65"H | Retailer |
| Works with | Amazon Alexa | Retailer |
| Features (seller) | Needs a 'C' wire | Retailer |
| Connectivity | Wi-Fi | Retailer |
| Power | Battery Powered | Retailer |
| Voltage | 24 V | Retailer |
| Display | Digital | Retailer |
| Mounting / installation | Wall Mount | Retailer |
| Batteries | 2 AAA batteries required. | Retailer |
| Product weight | 12.8 ounces | Retailer |
| Warranty | 1 year seller; 5 years manufacturer with proof of professional installation. | Retailer |
| Material | Other | Retailer |
| Heat / cool stages | 3 Heat / 2 Cool | Retailer |
Strong points and weak points
Strong points
- Stages: 3 Heat / 2 Cool
- Works with Amazon Alexa
Weak points
- C-wire need not stated
- Needs Wi-Fi for smart features
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 TH8321WF1001 Smart Thermostat need a C wire?
Does the Honeywell Home TH8321WF1001 Smart Thermostat work with a heat pump?
Other smart thermostats with similar wiring
- ecobee EB-STATE6L-01 Smart Thermostat
- Bosch BCC100 Smart Thermostat
- Sensi ST76 Smart Thermostat
- Honeywell Home TH9320WF5003 Smart Thermostat
All smart thermostats in one grid · Every Honeywell Home control listed
Our take
Shortlist it for phone control and scheduling.
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.
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