Quote Originally Posted by inline6c View Post
That makes sense.

What confuses me is how my truck puts out inside cab heat so fast in the morning with it 30 degrees out.

It seems like it's blowing hot air almost instantly.

I assumed that the grid heaters pre and post-heat (I believe i read it does this till it heats up to around 60 degrees) was the answer.

My company truck is a 2021 F350 6.7L, and it takes 10x longer to start blowing heat.

I know the new truck was ordered for Colorado and has the winter package and all those bells and whistles, but I still haven't found anything that lets me know how it throws the heat out so quickly (which I thoroughly enjoy)

2018 Ram 2500 Limited TungstenRevMax ZeroFlex VBProven DieselLeveled w/ 35s
I'm unsure about the ‘18, but my 21 Laramie has an auxiliary cab heater that gives interior heat faster.

At least, that’s what the build sheet and sticker claims.

Yours being a limited, I would not be surprised.