Dry air from idling?

Actually kind of puzzled. Your info says you're from Nevada, which is already a very dry place.

Anyway, Air conditioning systems will remove some moisture from the air. The simple physics of condensation kinda doesn't give any other option for that. Many car climate systems will automatically turn on the air conditioner when you turn on the window defroster for this reason. The A?C will help to dry the air a bit and then the heater coils will warm it up and both together are more effective at keeping a car window defrosted.

An evaporative-cooler (aka. Swamp Cooler) kinda works in the reverse fashion and does add mositure to the air. The dryer the air is to begin with, the more cooling an evaporative-cooler can produce. Living in an arid place, I know several folks who only run an evaporative-cooler in the early summer months and do not turn on their A/C systems till the hardcore summer days arrive.

Anyway, I'd think there are several gadgets to help add some humidity back into your air. But, I am not really sure if any have been adapted to 12VDC. As for household stuff, I'd suggest a regular humidifier. You can get a cheap one for less than $20 and nicer ones for around $50. Look in the baby section, as humidifiers are mostly bought and used in connection with babies (to my knowledge). I've had the cheap ones and the more expensive ones. Don't know if I've ever noticed any difference in their effectiveness. Of course the previous suggestion of just draping a damp towel across a vent isn't a bad suggstion either. They make humidifiers for other things such as cigar humidifiers and even humidifiers for pianos. I have no experience with any of these or other gadgets to add some humidity back into your air. I kinda don't think they would work to well on a truck cab.

Good Luck and let us know what and how it ends up working out for you. I think others might benefit from what you figure out.

PS. I recently moved back to AZ from Florida. I got 20+ years living in the arid heat here in SW AZ.

 

Keeping the AC temp higher helps with the dry air. If you're idling all night with the AC running, keep the temp set as high as you can and still sleep comfortably like 78 or even 80.

 

crack your windows so fresh air can come in.

 

Are you sure its not from something like an exhaust leak? Exhaust gases from engines tend to mess with my sinuses a lot.

 

Maybe an exhaust leak. Could try one of those for home units and put in sleep and see if it goes off when sleeping.

 

is the cab a/c on recirculate??

if so, switch it and bring in fresh air to change out the air in the cab.

 

They are effective in very low humidity locations, which means they are useless in about 75% of the country.

 

I’ll try them … it’s irritating I haven’t been able to work without my heart feel like it’s breaking . It’s like I’ve got two people in my soul completely out to ruin my gains making my breathe off set. Infuriating. I’ll try humidifier thx.

 

Quite a mystery… I would think allergy or exhaust …