Free residential service call with any repair during normal business hours

CSI Mechanical

   (704) 600-6267

Serving Shelby, NC Metro Since 2010

XL80 – TUD2/TDD2

  • 40–140 mbth input
  • Two-stage heat
  • PSC four-speed blower motor
  • Two-speed draft inducer
  • Silicon nitride igniter
  • Fully insulated/gasketed
  • Factory wired for humidifier and EAC


No matter what the temperature might be outside, the XL80 variable speed gas furnace is designed to provide a consistent, predictable flow of warm air to keep your family comfortable all winter long. The XL80’s two-stage heating helps prevent temperature swings with a system rating of up to 80% AFUE.