Having had a previous handyperson estimate of many hundreds of dollars to resolve the situation, Frank was able to access the duct through a dropped ceiling, clean out the blockage and re-tape all the joints within his 2-hour minimum visit as well as provide an estimate for a future job to be done in the spring. I couldn't be more pleased with the job and his attitude of doing a great job for a very reasonable price. Thank you Frank!!
P.S. He quickly responded to my call and booked the repair within the week.