Arrived at customers house for system not cooling. On arrival. Customer showed me to air handler unit. Air handler unit is now sod. Started up unit. Air handler came on. Went outside and condenser was on. Hooked up gauges. And unit was very low on Freon. Show to customers and suggested we added Freon with this being the first time of us seeing low Freon. Customers agree. Added 2 pounds of Freon. Pressures and readings now looking correct. Informed customers that this could mean they have a leak somewhere in their system. Suggested they monitor their system and if they lose any Cooling efficiency to let us know and we should perform a leak search at that point. Unit is now producing proper delta. Suggested customer sign up for maintenance agreement and customers agreed. T. Collected payment and signature and left. Thank you for choosing total air!