harvityharvharvharv says:

I cannot imagine how the AC would impact anything at all. Go nuts, and try leaving the window cracked, it’ll help immensely. You can even get little solar powered fans that fit into the window *****.

Fred C says:

The a/c should be turned off several minutes before the car is shut off, but the fan left running. You kinow that musty smell you sometimes get in air conditioned cars? The moisture left in the vents turns to mold. Running the fan after a/c is off dries the moisture and prevents the formation of the mold. I am surprised so many people that reply to these threads totally miss this issue.
Air conditioning duct systems can be virtual incubators for microbial pollutants such as mold and bacteria. With the alternating high and low humidity conditions which regularly occur in air conditioning ducts during air conditioner operation, molds will grow, spread, produce spores and distribute the spores. Mold contamination in air conditioning poses a serious problem.
It has the potential to make you just as sick as toxic mold in your house, which can get a house condemned if left too long. If you want to turn the a/c switch on so the a/c starts with your remote starter, that is fine as long as you don’t waste more than a couple of minutes of fuel, but don’t leave a/c on when shutting off the car. The drain doesn’t clear moisture from the vents, by the way, it can’t.

patrick r says:

any extra load on the starter is always bad