Install your thermostat within minutes
Never installed a thermostat before? Don’t worry, we’ve got you covered! Our install guide walks you through installation and setup with clearly illustrated, step-by-step instructions. Plus, this thermostat also features built-in level, universal back plate and a simple setup menu for easy installation.
- Large, easy-to-read backlit display
- Dual fuel control eliminates the need for an outdoor sensor
- Keypad lockout to prevent unwanted tampering
- Filter change reminder
This thermostat does not work with:
- Line voltage (110V / 220V baseboard heating)
- Proprietary/ communicating/ serial protocol
Built with compatibility in mind
This thermostat is designed to work with existing wires in your home, and features extensive compatibility with heating, cooling and heat pump systems.
- Conventional (1H/1C) - Up to 1 stage of heating and 1 stage of cooling
- Heat Pump (1H/1C) - Up to 1 stage of heating and 1 stage of cooling
- Heat only and Cool only
- Gas, Oil, Electric applications
- Millivolt and 3-wire zone valve systems
Thermostats that fit every need
The 80 Series thermostats are the perfect fit for every application. The standard footprint makes replacements and upgrades easier than ever without leaving visible marks on the wall from the old thermostat.
Reliable temperature control
With its precision temperature accuracy of 1 degree, this thermostat gives you the option of keeping your home temperatures within one degree of where you set it. It’s time to start expecting more from your thermostat.
Our experience makes a difference
For more than 75 years, Emerson has leveraged thermostat expertise to bring you thermostats with reliable quality and top functionality. In fact, the HVAC system in your home probably depends on our parts and products to keep it running smoothly.
 1F85U-42NP |  1F85U-22NP |  1F83H-21NP |  1F83C-11NP | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Compatibility | Multi-stage (4H/2C) | Multi-stage (2H/2C) | Heat Pump (2H/1C) | Single-stage (1H/1C) |
| Precision temperature control | ? | ? | ? | ? |
| Backlit screen | ? | ? | ? | ? |
| Auto-changeover | ? | ? | NA | NA |
| Keypad lockout | ? | ? | ? | ? |
| Filter change reminder | ? | ? | NA | ? |
| Easy DIY install wizard | ? | ? | NA | NA |
Install your thermostat within minutes
Never installed a thermostat before? Don’t worry, we’ve got you covered! Our install guide walks you through installation and setup with clearly illustrated, step-by-step instructions. Plus, this thermostat also features built-in level, universal back plate and a simple setup menu for easy installation.
- Large, easy-to-read backlit display
- Dual fuel control eliminates the need for an outdoor sensor
- Keypad lockout to prevent unwanted tampering
- Filter change reminder
This thermostat does not work with:
- Line voltage (110V / 220V baseboard heating)
- Proprietary/ communicating/ serial protocol
Built with compatibility in mind
This thermostat is designed to work with existing wires in your home, and features extensive compatibility with heating, cooling and heat pump systems.
- Conventional (1H/1C) - Up to 1 stage of heating and 1 stage of cooling
- Heat Pump (1H/1C) - Up to 1 stage of heating and 1 stage of cooling
- Heat only and Cool only
- Gas, Oil, Electric applications
- Millivolt and 3-wire zone valve systems
Thermostats that fit every need
The 80 Series thermostats are the perfect fit for every application. The standard footprint makes replacements and upgrades easier than ever without leaving visible marks on the wall from the old thermostat.
Reliable temperature control
With its precision temperature accuracy of 1 degree, this thermostat gives you the option of keeping your home temperatures within one degree of where you set it. It’s time to start expecting more from your thermostat.
Our experience makes a difference
For more than 75 years, Emerson has leveraged thermostat expertise to bring you thermostats with reliable quality and top functionality. In fact, the HVAC system in your home probably depends on our parts and products to keep it running smoothly.
1F85U-42NP | 1F85U-22NP | 1F83H-21NP | 1F83C-11NP | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Compatibility | Multi-stage (4H/2C) | Multi-stage (2H/2C) | Heat Pump (2H/1C) | Single-stage (1H/1C) |
| Precision temperature control | ? | ? | ? | ? |
| Backlit screen | ? | ? | ? | ? |
| Auto-changeover | ? | ? | NA | NA |
| Keypad lockout | ? | ? | ? | ? |
| Filter change reminder | ? | ? | NA | ? |
| Easy DIY install wizard | ? | ? | NA | NA |