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    ComfortLink® II XL850 Thermostat

    Smart Thermostat — ComfortLink™ II XL850 — Trane
    Estimated installation costs for

    What’s included in the price?

    Pricing varies by location and dealer in addition to several other factors.

    Technical Specs

    Cooling Stages
    Heating Stages
    Comm/Variable Compatible
    Touchscreen Size
    4.3" with full color

    Additional features of the ComfortLink® II XL850 Thermostat

    As a Smart thermostat, ComfortLink II XL850 delivers an intuitive, colorful, user interface that you can easily control from phone, tablet, or laptop so that you can achieve ideal home comfort or energy savings from virtually anywhere. The XL850’s accompanying Z-wave® devices enables you to access over 200 devices in your home for easy monitoring, so homeowners can keep tabs on their home 24-7 and get real-time data and diagnostics help if there’s ever a problem. No matter the season, you can tap into the comfort you deserve with Trane’s popular ComfortLink® II XL850 thermostat.
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    Warranty & Registration

    After getting a new system, be sure to protect it with a warranty.

    Protect your system

    Owner’s Manuals

    Learn more about your product, like its technical specs and innovative technology.

    Find your manual


    Discover how you can troubleshoot your HVAC system.

    Learn to troubleshoot

    Where do you go from here?

    Step 1

    Research your needs

    Consider your home comfort level, climate, ductwork, energy use, and desired monthly heating and cooling costs.
    Step 2

    Get a dealer quote

    Schedule a visit with your dealer for a custom recommendation. Visit our Dealer Locator page for a list of questions to discuss with your dealer.

    Step 3

    Fix or upgrade your unit

    Gather all your information to make a replace or repair decision. Follow up with your dealer and enjoy your new or improved HVAC.

    Contact a local dealer

    Dealers can answer questions, help you find the right products for your home, and repair your system.

    We’re here to help

    Connect with our Customer Care team about your products, warranties, and dealer concerns.

    Available Monday – Friday from 8am to 6pm CST


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