8-9 AM Arrival; Comfort Club 1C AC Start up. System was installed last July. No notes on filters that I can see. Install does say "Ran 10 ft. Of duct with 5 10 inch takeoffs." not sure if that helps us find filter size. Customer is aware of cost of services. Customer mentioned that they sent paperwork for permit to us and we never completed it. I sent a message to Joe about it day we scheduled.