Engine Idling on 2004 Tacoma?

[lakesxandxtrees]

Sorry if this question seems kinda basic or easy (i dont know a whole lot about auto mechanics) but i am wanting to know how long it is okay to have the engine idling (running but not driving) on my 2004 Toyota Tacoma PreRunner? I spend alot of my time in the truck, and it is somewhat of a mobile office for me. Living in Phoenix, Arizona it gets rather warm here, so to be comfortable when doing business while parked in the truck i leave the engine running with the A/C on.

Should i be concerned as to how long i leave the truck running with the A/C on while it is in park and not being driven? Sometimes i sit for up to an hour with the engine running yet not driving.

Thankyou!

[The Phoenix]

As long as you have your coolant system flushed every 60-75K, I don't think you'll have a problem at all. Your fan is capable of keeping the radiator cool, even in extreme temperatures outside. I once left mine running for about 6-7 hours while I slept in heat. (Stuck in an ice storm so I slept at the local truck stop) Only burned about 1/4 of a tank. That's not a bad trade to keep my body warm

[Comattack]

I agree...
Driving the truck and putting load on that engine is what puts more wear and tear on it than anything.
You should be fine.

[Arb1977]

Id be more concerned about fuel dilution. Excessive idling is never a good thing over the long haul. I would change your oil more often then anything. How many miles do you generally drive a year?