Arrived, greeted Robert and proceeded to rip and tear out an old gas fired furnace. We stand installed a new Amana 85% efficient gas fired furnace. We reworked the the wiring. We rewired and relocated the units service switch. We re-roughed the gas line. And we created a new furnace transitional piece connecting to the main trunk supply. We applied ductwork mastic with tape to seal up the unit. We restored power, purged the gas lines and fired up the furnace. The unit fired, ran, cycled and reached temperature. The unit is operating as it should. Robert was very satisfied with the service.