Jake Kring. 02-17-25. I arrived for a new customer duct cleaning inspection. I spoke with the homeowner and they showed me that the back master bathroom closet is at least 5-8 degrees cooler than the rest of the home. I inspected the supply duct and found it to be dirty but no signs of sand or blockages. I also inspected the system and made sure the system is clean and clear of any debris. I did find the system to be a wider system than the return plenum. This is a 5 ton system that requires 2000 cfm of air movement and this system only has one 12” return and four 9” returns. I recommended to increase the three returns closer to the system with larger grills and return ducts. We discussed the duct cleaning and removed quantity of five cleaning ps due to them being installed underneath the kitchen or bathroom sinks. We cannot change the output cfm but we can only try to increase the return duct to help increase the output velocit.