ComfortLink™ II XL850

Wi-Fi Control
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.

Download Latest Version 3.0 Software for the ComfortLink™ II XL850 Control


Key features

4.3” color touchscreen

Compatible with ComfortLink™ Communicating and Variable Speed systems

Create up to six daily heating and cooling schedules

Indoor relative humidity display

One touch installation set up with six preset configurations

Built-in Nexia Bridge

Upgradable software

Wi-Fi or Ethernet connection

5-day weather forecast & weather radar**

Filter, maintenance and humidifier reminders

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

7-day Programmable

5 heat/ 2 Cool

Zoning Capability: No

Screen size: 4.3”


10-year Registered Limited Warranty on internal functional parts.

If the product is not registered within 60 days of installation, Trane’s Base Limited Warranty terms will apply.

An option to purchase transferability of your Registered Limited Warranty is available.

Optional Extended Warranties are available. Extended Warranties can pay for labor and other costs not covered by manufacturer’s limited warranty.

Ask your dealer for full warranty information at time of purchase. Warranties are for residential use only. Some exclusions may apply.

Register within 60 days of installation to activate warranty. Residential use only. Some exclusions may apply. Call 1-800-554-6413 or Register Online.

Share This