Overall, you've got a strong opening here. However, there are some minor kludges. While "trailer park home" is a handy way to tell us both the nature of the house and the surroundings, it's a bit lazy.

Compare "Brady peered out the tinted window overlooking the wheat field that bordered the/his trailer park." Same general information, but without the chunk of intrusive shorthand implied by "trailer park home".

Then you have a couple of narrative jumps, skipping over actions that must have occured, but which you don't mention. I don't know for the sure that the tinted window overlooking the field wasn't in the door, but that doesn't seem probable. However, you never actually mention him touching his door knob and you certainly don't mention anyone opening the door (and if the door were already open I have a hard time understanding why he was looking through its window).

I should mention the reference confusion on "It was cold." Because of the narrative jump, I don't know whether "it" refers to the door knob (I'd call it a handle) or the air outside (or even the air inside). That's probably an effect of the narrative jump, if you hadn't skipped the action of turning the handle and opening the door there would be no confusion.

And just to be nitpicky, I didn't like "He just could not see it." It sounds stilted. Avoiding contractions might be right for some circumstances (okay, if I were to list all the places where you should avoid a contraction, this post would rapidly get out of hand), but you don't need any special reason to use a standard contraction in narrative fiction. They help draw the readers into the natural flow of their native language. You avoid them in cases where you want to break up that flow, force the reader to stop and think about what it means that you did not use the contraction. Like in that last sentance