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ComfortLink™ II XL850

Control your variable speed or communicating system with our new smart control.



Perfect air in perfect harmony

Connect your ComfortLink™ II XL850 control to a matched Trane system for complete, seamless comfort. Every component is designed to work in harmony with the others, optimizing your energy use over time.


Contact and control

Not only does the ComfortLink™ II XL850 monitor indoor and outdoor temperatures, so you can adjust your system to be energy-efficient, but it also tells you when it’s time to change a filter or schedule routine maintenance.

Key features

** Requires high speed router and connection to Nexia™ Home Intelligence.

Locate Energyguide Labels


Nexia™ Remote Climate Access
Nexia™ Wireless Connectivity
Nexia™ Bridge
Compatible with Communicating and Variable Speed Systems
Programmable (days/schedules per day)
Heat/Cool Stages
Adjust Home Temperature Remotely
Upgradable Software
Nexia™ Diagnostics


  • 7-day Programmable
  • 5 heat/ 2 Cool
  • Zoning Capability: No
  • Screen size: 4.3”
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