No cool call, upon arrival found system short cycling due to clogged drain pipe, but also noticed oil residue on evaporator coil, checked pressures on unit outside and found hey are indeed low, the only reason the unit is not freezing is because the outside is so clogged with dirt it won’t let it freeze. (Holding too much heat, compensating for the low pressure) I cleared the drain line and turned the unit back on, even though the unit is running it will not keep temperature with all the issues. Customers chose to get quote to replace unit. Based on our findings today, it might be time to think about getting a brand new system.