The Hx Thermostat is a free iPhone application developed by Johnson Controls Inc. It allows users to remotely control their York, Coleman, Luxaire, and Champion thermostats. With this app, users can adjust set points, cancel schedule overrides, and enable Max heat or Max cool settings. The app also offers features like fan settings, geo-fencing, home and away modes, humidity settings, and the ability to monitor and control multiple locations. Users can create schedules, select system modes, and receive push notifications for system faults, temperature, and humidity. The Hx Thermostat is compatible with Google Home and Amazon Alexa for voice control. Additionally, it supports zoning management and vacation mode, if applicable. For any issues with the app, users can contact while hardware-related concerns should be directed to the respective brand dealer.