A/C output temperature

[Needaclue]

What temperature range should I expect to see coming out of the first vent in line from the blower with the air conditioning on? Lets say it's 100 degrees outside.

[HayZee518]

if your comfort range is set to 68-72, then I would expect at least 60 degrees

[LazyPup]

The temperature should be 12 to 16degF lower than the return air (room temp) temperature.

[Needaclue]

Thanks for the responses. Today it's 101 deg, I have the thermostat set on 78 deg and the output temp at the first vent is 51 degrees. It appears my nearly 20 year old A/C system is working just fine.

My next question. If I continually monitor the output temperature and it remains as it is, would I be wasting money having the A/C system checked every year by an A/C tech as many preach? We moved in here 3 years ago. I clean the condensor coils with a hose and oil the condensor blower motor every spring. The output temps remain essentially the same. I've never had it looked at. Good practice or no?

[HayZee518]

never hurts. its when there's no maintenance when problems arise.