Is it a particularly high probability? Not really. Is it still too high considering it’s a life-safety system? fucking absolutely.

You doesn’t sounds confident on something you claim tbh. Also it’s a lot of technical truth but not really claim.

Car usually idle at 700/800rpm, this is normal working rpm for both alternator and compressor(because of course it is). Unless your car is about to stall due to whatever issue your car have, it should be within the normal working rpm and have enough refrigerant pumped. Variable compressor is even better, as it can adjust the amount of refrigerant pumped based on the car’s rpm, instead of only work well within a fixed range of rpm.

For alternator, there’s regulator inside that can control the voltage it output based on the rpm. The voltage output need to be stable across all normal working rpm, and if the voltage drop too much under load and in idle rpm, it’s most likely there’s underlying issue with your alternator. So if the voltage output is so low while idling that it discharge the battery, your alternator need to be replaced.

For the engine, moving air doesn’t cool the engine too much, it’s the coolant running within the car engine that’s cooling it. Moving air only ever cool the engine so slightly that it’s considered negligible, and i dare say, it won’t matter. If your engine run hot while idling for a long time, there’s likely an issue with your engine cooling system, be it clogged radiator, faulty waterpump, bad thermostats, etc etc.

Also AC condenser is usually locate in front of a radiator, right at the front grille, and its cooled with a fan sucking air in from the outside. A slightly hot engine compartment does not affect the cooling capability much as the air flow will not allow the hot air to reach the condenser. The fan also blow right at the engine, so the argument of less air flowing through the engine compartment does not make sense to me.

If your compressor spoiled earlier than it would because you idle a lot, it’s not because it’s being run in idle and idling cause it to fail early, it’s because while it’s idling you’re using it, as people usually judge a car usage by the mileage and never calculate how much they leave their car in idle, making it feels like it failed prematurely. It’s a total myth that doesn’t make any sense.

Also it’s a hybrid.

Source: am mechanic