Home A/C isn't cooling?

indoor fan is on. outdoor fan is on. compressor is on. RIGHT? you do not have an electrical issue. i know the tech didnt find a leak, but i think he needs to re check it. is your indoor evaporator coil icing over? is the filter clean. is the outside coil (condenser), clean? all of these things should have been checked and i'm sure the tech did. (hvac 101). there is a metering device that might be a problem and other than that, we are dealing with a refrigerant issue. the metering device, (axv, txv or cap tube), releases pressure on the refrigerant going into the indoor coil. however, that will really screw up the pressures both low and high side. SO, that's probably not it either. i think you have a leak and your tech somehow missed it. this is not a contactor, capacitor, fan motor, or relay problem. i would 2X check refrigerant level and 2X check for leaks, especially around the indoor coil, (evap).

also, you might want to check your duct work. make certain you arent blowing cool air into your attic or basement or where ever. it's a refrigerant or air side problem! final answer alex! lol GL with it.

If this is a split system with an outside compressor unit, the following applies. There are two things out there that run. The evaporator fan and the compressor. If the fan is blowing, is the compressor running? You should be able to hear it. If you can not hear it, if you can touch it, it will be hot if is running. If not the compressor is not running. If the compressor is running and not cooling, either the compressor is bad or it is too low of Freon to cool which is very likely. If the tech. added Freon, it has a leak as it is a closed sealed system. If you have gauges, you should get a reading of about 85 if it is charged correctly. If a split system, it has two copper pipes running inside. The large one should be cold if it is working.

Perhaps you can clean the air con of dust. Dust can prevent the cold air in the air con from cooling the surrounding air.