Underground duct work video inspection service call. Cleaned and televised all underground ductwork. Applied trenchless spincast mortar to all underground ductwork in basement. Repaired furnace box and all register vents with hydraulic cement 5/14/25 Applied first application of duct armor to all underground ductwork and furnace box. 5/21 /25 Applied second application of duct armor to all underground ductwork and furnace box.