do bunk heaters blow cold air as well?

Put the ignition switch on accesory, the bunk blower will blow ambient air around. Not a/c but it sounds like your company doesnt want you to idle anyway. It might stay running on high idle depending on the settings in the ecm.

 

As I understand, the bunk heater is separate from the truck A/C.

 

No. Would have almost no cooling effect ... you would be surprised how much a small fan helps and you can run it all night won't kill batteries at all

 

I normally don't entertain this guy and his silly threads but this has got to be the best crazy thing you have said in a few days!!! Keep em coming.

 

Its been a while since Ive been in a sleeper but arent the a/c and heater two different systems? If they are as long as your blowers good it should work...as far as the idle thing I dunno im still newbie.

 

All a bunk heater does is draw a very small amount of fuel from your tanks, puts it on a heater element, which gets real hot from electricity from your batteries, and has a small fan to blow the heat into the sleeper ... very simple, very effective, very efficient, takes maybe 0.5 gallon for a full 10 hours and can cook you out of the bunk on high mode.

 

When I was with Prime, I tried everything to make my truck idle. Out of desperation, I finally took a broom and wedged it between the armrest and the throttle. It worked. It might work with your truck.