Hi!

I want to save energy while making the use of the air-conditionar cost-efficient. However, out of the following two theories/options, I am not sure which one is the better to follow. I would be highly appreciative if you would help me make the right choice.

>Given that the thermostat setting should be kept at 78 deg F, which one the following two options is better to go with:

Option A: One should shut down the AC unit every single time one goes outside (for ex. For a days work)

Option B: One should leave the AC running at 78 deg (or turn it a little higher) when going outside and shut the unit off only when leaving for longer period such as multiple days.

Please advice.

Thanks a million,
NJ