Installed 3 ton Carrier furnace system. Installed Honeywell thermostat. Installed new supply and return plenums. Sealed all connections with mastic. Rebuilt, insulated and cleared primary drain line. Replaced disconnect and whip for outdoor system. Pressure tested line set and pulled a vacuum. Ran low voltage in 1/2 inch seal tite. Charged system to meet manufacturer specifications. Everything is working at completion of service.