Today I had the pleasure of servicing a 7 year old Carrier Furnace and Condenser Unit. Upon arrival, customer stated that inconsistencies with the air flow between the main portion of home and the back bedroom. Upon visual inspection, I found the system operational. I did note that there were 5 total filters installed and that 2 supply ducts were closed off. I opened the ducts and removed the filters from the system and replaced 1 filter in the furnace cabinet. I then verified all amps, temps, and pressures. During my diagnostic of the furnace, I found everything to be operating at manufactures specifications and airflow greatly improved. After discussing my findings with the homeowner, I explained that only one filter needs to be used and that the lack of airflow stemmed from over filtration. I also discussed the importance of a maintenance plan. Homeowner would like to discuss with family before making that decision. I took pride in fulfilling your heating and air needs and I