Firstly, our technicians dismounted, hauled away and recycled old insulation and then installed new HVAC 821SA48070V17. Either technicians installed new HVAC system with a new furnace - Bryant 821SA48070V17 Preferred 80 Series Variable-Stage Gas Furnace. This furnace has quiet performance, even-temperature comfort from variable-speed air delivery and two-stage operation. Besides during this project we installed: