Siterwell Smart Thermostat GS366A-MWAC

Yes. Many standard installations can be completed in about 45 minutes or less.

Before starting, turn off power to the HVAC system and confirm compatibility using the Siterwell Compatibility Checker or Siterwell Link app. Advanced or unusual systems should be installed by a qualified HVAC professional.

No.

Do not transfer short jumper wires such as an Rc–Rh jumper from your old thermostat. The GS366A-MWAC handles the required connection internally.

If your system has only one R-family wire—R, Rc, or Rh—it normally connects to Rc.

Do not guess based on wire color.

Turn off HVAC power, take a clear photo of the existing wiring, and identify each wire using the terminal labels on the HVAC control board. The terminal connection determines the wire function.

If you cannot positively identify the wiring, contact a qualified HVAC professional.

The GS366A-MWAC supports Heat, Cool, Heat/Cool Auto, Aux, and Off modes depending on your HVAC configuration.

In Auto mode, you set separate heating and cooling temperatures, and the thermostat automatically selects heating or cooling as indoor conditions change.

The GS366A-MWAC supports a seven-day schedule built around Comfort Settings.

Home, Away, and Sleep settings are included by default, and additional Comfort Settings can be created in the Siterwell Link app. Each scheduled activity determines when a Comfort Setting begins.

A Hold temporarily overrides your normal schedule.

You can manually select a temperature or activate a saved Comfort Setting. When the Hold ends or is cancelled, the thermostat automatically returns to its normal schedule.

Vacation Mode lets you set departure and return times along with dedicated temperature and fan settings.

The thermostat maintains your vacation settings while you are away and can return to your normal comfort settings when the vacation ends.

The thermostat can provide alerts for unusually high or low indoor temperatures, humidity conditions, heating or cooling performance, and excessive auxiliary-heat operation.

Available alerts depend on your HVAC configuration.

Weather information is based on the home address registered in the Siterwell Link app.

The thermostat must be registered to your account and connected to Wi-Fi. If weather information is missing or inaccurate, check the Wi-Fi connection and confirm the saved home address.