still have my 150 in the garage and it did it, the ranger I sold a long time ago so cannot check that one. Trust me I used the recirculating heat a lot here in KS and MO during the winter. Although with seat heaters I guess it is not as much of an issue.

 

On the way to work I tried it again, AC on MAX, cranked the temp **** to the right and left it that way for several minutes until I started to sweat. It works. I have a 2003 F250 SD.

 

so the 2003's do it but not the 2004's and the 2005's will do it

kinda bs

 

Sounds wierd to me!

 

yup my wife hates to ride in the truck it's too cold for her and on normal a/c cab fills up with unwanted smells/fumes

it goes to the shop tommorrow 4x4 went out today on jobsite left me stuck had to call roadside to pull me 20 ft up a small not steep hill that just had sod laid to the street the truck wouldnt move just burried itself ill have them try to fix the a/c again

 

What does ambient temps have to do with efficiency …..and ultimately the temp it cools to.

 

Ambient (outdoor) temperature affects your vehicles A/C in two significant ways. First, the interior of your car or truck absorbs some outside heat through conduction. Heat transfers through the steel body, the glass windows, etc. from the outside to the inside. The hotter it is outside the vehicle, or the more poorly insulated the vehicle is, the faster heat will transfer into the vehicle and the A/C will have to remove more heat to achieve the desired level of cooling. Second, the A/C absorbs heat inside the car through the evaporator, (the cooling coil) and transfers the heat outside to the condenser coil, (the coil in front of the radiator and intercooler) where the heat is given off and dissipates into the ambient air. The cooler the ambient air the faster the heat will dissipate. Air conditioners are rated by their capacity to cool. They are frequently rated in BTUs which is roughly the measure of heat required to change the temp of a pound of water 1 degree F. Air conditioning has to remove the heat entering the interior space and dissipate it into the outdoor environment and the rate at which it can do this is related to its capacity to cool. As the interior gets colder the difference in temp from inside to outside increases. As the temperature differential increases the rate at which heat comes in also increases. You eventually reach equilibrium where the heat coming in from the outside is heating as fast as the A/C can remove it. This is the maximum temperature differential you can have. Just to throw a number at it, say the maximum temperature differential you can achieve is 25 F. That means on a 100 F day the temp you can ultimately cool to is (100 F - 25 F) = 75 F. Hope that helps.

Regards,

Morris

 

Thanks good info, and exactly where I wanted it to go.
There are so many factors involved, it is a bit more than turning on the switch.