Free residential service call with any repair during normal business hours

CSI Mechanical

   (704) 600-6267

Serving Shelby, NC Metro Since 2010

XL824 – TCONT824

  • Nexia™ Remote Climate Access included (Having more than 4 connected controls or adding accessories to your Nexia smart home system requires a monthly subscription for remote access via most web-enabled smartphones and computers.)
  • WiFi connectivity
  • Built-in Nexia Bridge
  • Used with conventional 24V systems (non-communicating)
  • 5 heat/2 cool
  • 7-day programmable
  • 4.3″ color display
  • Humidity sensor
  • Humidifier, ventilation, and dehumidifier control
  • 2 filter change reminders
  • 5-day weather forecast with local radar and alerts
  • Dual fuel capable
  • Allergy and quick clean cycles
  • Auto changeover
  • Maintenance reminders
  • Customizable home screen
  • Embedded diagnostics
  • Smart continuous fan


The XL824 connected control includes both built-in Nexia™ Bridge and Nexia™ Remote Climate Access. It’s a 7-day programmable unit with five heat and two cool settings that’s compatible with almost all HVAC systems, and can be controlled via wi-fi from your smartphone or tablet. Not only does the XL824 monitor indoor and outdoor temperatures so you can adjust your system to be energy-efficient, but it also monitors and controls humidity as well as telling you when it’s time to change a filter or schedule routine maintenance.