Anyone who lives in Las Vegas / Henderson NV knows it gets HOT. I replaced my HVAC systems using Carl's AC & Sheet Metal in 2012 and could not be happier! They upsized the AC units to 2 ea 5 ton units and set up the home into two zones (daytime active & nighttime active), giving me the flexibility to adjust temperature by zone based on activity. Icing on the cake was replacing the origilan builder ductwork sheetmetal to maximize airflow. I use Carl's to commission the systems twice a year (once for cooling & once for heating). Even after 6 years (of commissiong services post installation), I experience top notch services from both office and on-site techs. I couldn't be happier! Thanks Carl's!