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TSTATIIEWF-01
Ion™ Gray Smart Thermostat

Tempstar’s new Ion Gray Smart Thermostat offers effortless connected comfort with just a touch. Its sleek, modern design blends seamlessly with any décor. A simple touch reveals system mode, current temperature, fan setting, and set-point temperature. The Ion Gray Smart Thermostat allows for a stronger dealer-homeowner connection – with permissions to data sharing a dealer can provide improved, reliable service.

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  • Simple to use: Touch-sensitive buttons and easy-to-read icons on the wall-mounted control let you effortlessly adjust temperature settings, switch between heating and cooling, and change fan settings.
  • Personalized Comfort With Remote Access: With the Ion Home app on your Apple® or Android® devices, you can access and control your system from anywhere and even set daily comfort schedules for tailored comfort.1
  • Comfort-enhancing control: The Ion Gray Smart Thermostat manages single- and two-stage systems as well as indoor air quality accessories for enhanced comfort.
  • At-a-glance-display: During startup, the color-coded, illuminated LED border indicates whether the system is in heating, cooling, or fan-only mode. 
  • Smart home ready: Your smart thermostat works seamlessly with most third-party smart home systems.
  • Enhanced service: Your dealer can provide improved system service by remotely viewing the Smart Thermostat’s operating status data. To enable this feature, you’ll need to accept our terms and conditions, including system status viewing by your dealer.
  • SmartSave: Enroll in our SmartSave Program. SmartSave makes it easy to save energy and earn rewards, upon enrollment, and continued annual participation, while maintaining control of your comfort.2 Currently available in select regions of California, Texas and New York with additional regions coming soon.
  • Warranty: Five-year connected warranty3 upon timely registration and connection.4
Touchscreen Touchscreen
Advanced Wi-Fi® remote access touchscreen control
Dual Fuel Dual Fuel
Dual Fuel System Management
Warranty Warranty
Covered by a two-year parts limited warranty. Warranty period is extended to five years when the following conditions are met within 90 days of installation: Thermostat is properly registered, is connected to Wi-Fi®, and data sharing permissions are enabled except in jurisdictions where warranty benefits cannot be conditioned upon registration.
Programmable Programmable
Single or 7 - Day Programming
Auto Changeover Auto Changeover
Auto change between heating and cooling

1When connected to the Internet through a Wi-Fi® network.

2 SmartSave occasionally adjusts your thermostat set point up to 4 degrees, while giving you the flexibility to reset your thermostat to your desired comfort level at any point from the thermostat or the SmartHome app. Reducing energy usage during higher rate, peak demand periods contributes to electricity savings on your utility bill. Savings and ability to save energy may vary depending on your location, utility provider, home, equipment, weather, and other factors. Continued participation is required for ongoing incentives. Program and incentives are subject to change. See Program Terms & Conditions for complete details.

3See warranty certificate for complete details and exclusions.

4The Ion Gray Smart Thermostat is covered by a two-year parts limited warranty. The warranty period is extended to five years when the following conditions are met within 90 days of installation: Thermostat is properly registered, is connected to Wi-Fi®, and data sharing permissions are enabled except in jurisdictions where warranty benefits cannot be conditioned upon registration.

California residents please see Proposition 65