Completed installation of new 3-ton Carrier Infinity 19VS system w/ variable speed compressor. Removed old R22 unit and updated lineset. System includes new air handler, programmable thermostat, and upgraded ductwork at supply plenum. Vacuum-tested system to 500 microns before charging. All operations normal during testing. Efficiency rating is 19 SEER - should see significant energy savings compared to 10 SEER old unit. Left yard and work areas clean. Customer very satisfied.