Johnson Controls GLAS Smart Thermostat
by Johnson Controls
Last updated Mar 29, 2026 · 3 revisions
Premium smart thermostat with translucent OLED touchscreen, indoor air quality monitoring (tVOC/eCO2), and compatibility with most 24V HVAC systems.
6.1 - Good Media
About This Product
The Johnson Controls GLAS is a design-forward smart thermostat featuring a 40% translucent OLED color touchscreen. Beyond temperature control, it monitors indoor air quality by measuring total volatile organic compounds (tVOC) and equivalent CO2, and displays outdoor AQI, UV index, and allergens when connected to Wi-Fi. Compatible with most 24V heating and cooling systems including gas, electric, oil, radiant, and forced air. Integrates with Amazon Alexa and Google Home for voice control. No C-wire required with included power extender kit.
FSH Score Breakdown
Customer Reviews
Features
Equipment & Asset Management4features
Hardware Features1feature
Scheduling & Dispatch1feature
Reporting & Analytics1feature
Compliance & Safety1feature
AI & Automation1feature
Platform & Customization1feature
Training & Education1feature
Integrations 3 across 1 category
Industry-Specific 3
Pricing
- Model
- Custom
- Starting at
- $319
- Notes
- Original MSRP was ~$319. Product is DISCONTINUED (announced ~2022). No longer sold new by JCI. Available on secondary market (eBay) at varying prices. Model numbers SIO2-10000 (with Cortana) and SIO2-00000 (without).
