Free residential service call with any repair during normal business hours

CSI Mechanical

   (704) 600-6267

Serving Shelby, NC Metro Since 2010

TVGX – Variable Speed


  • 3, 4, and 5 ton capacity ranges
  • True Variable Speed Compressor matches capacity to load
  • Dedicated communicating control system
  • Variable-speed indoor blower motor
  • VS training required to sell product
  • Meets or exceeds ENERGY STAR® guidelines


The EnviroWise™ Variable Speed Geothermal System provides the ultimate in performance in 3-, 4-, and 5-ton capacities with up to 40 EER and 5 COP—meeting or exceeding Energy Star® guidelines. Featuring a True Variable Speed Compressor and Variable Speed indoor blower with a dedicated communicating control system, this geothermal heating and cooling system offers comfort and efficiency at the highest level possible. This unit can return up to $4 of heat for every $1 of electricity used, in part because they use renewable heat from deep inside the earth, a virtually limitless supply of energy.

Fall special 2023