Upon arrival, I completed the entire ductwork inspection which is located in the attic upon completing the duct inspection. I found the dryer vent is not hooked up to the outside. Seems like when the roof was done the vent was never installed. I notified the customer to contact the roofers to come back and fix the problem, also upon the customer request, I checked the operation of AC unit and found that the system is low on refrigerant, I got a verbal approval from a customer to add additional 1 pound of a refrigerant to stabilize and normalize the pressure , I had complete that which was a success and pressure got stabilized to the manufacture specs. SH 14 & SC 4.5 outside temperature was 65.