Privacy policy

QF Home Thermostat Link. Effective October 4, 2026.

QF Home Thermostat Link is used only by its owner, to let the owner's own self-hosted home automation system read and control the owner's own Google Nest thermostat through Google's Device Access program. It is not offered to anyone else.

What Google user data the application accesses

With the owner's permission, the application accesses information about the owner's own thermostat that Google makes available through the Device Access program (the Smart Device Management API), such as temperature, humidity, mode, target temperature, connection status and status-change notifications. It can also change the thermostat's settings when the owner asks it to.

How the data is used

The data is used only to show the thermostat's status and to control it from the owner's home automation system. It is not used for advertising, profiling or analytics. Use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

Where the data is stored

• Thermostat data and the access credentials are stored only on the owner's own home automation server, on the owner's own network.
• This website is a static page. It has no forms, accounts or cookies of its own. Its hosting provider may keep standard server logs.

Sharing

No data is collected from anyone other than the owner. No data is sold, transferred or shared with third parties, and no person other than the owner reads it.

Revoking access and deletion

• The owner can revoke access at any time from the owner's Google account (Partner Connections / third-party access). Access stops immediately.
• Removing the integration from the home automation system deletes the stored credentials. Thermostat readings already recorded in the owner's own system remain under the owner's control and can be deleted there.

Changes

If this policy changes, this page will be updated and the effective date above will change.

Home