Humidity levels in the house are around 70%. Checked unit and there are no holes in duct work. Fresh air intake works perfectly. Closes when not called for. Static pressure is .02. Temperature differential is 20 degrees. Unit is working perfectly fine. Customer signed up for membership. 2 visits for maintenance (1 in the fall, 1 in the spring), 15% discount on repairs, 5% discount on new system, $69 trip fee regular business hours, $89 trip fee after hours.