Montag's house seems rather nondescript. In Part I, Montag returns to his house, sticks his hand in the "glove hole" where it is recognized. He enters and looks at the ventilator grill where he has hidden something; then, he stares at a blank wall, seeing Clarisse's face in his mind, a face so full of life.
When Montag opens the door to the bedroom that has French windows that are draped.
It was like coming into the cold marbled room of a mausoleum after the moon has set. Complete darkness....a tomb-world....
In the main room of the house there is a "wall-to-wall" circuit. In other words, there are walls that have a huge screen. Three walls, soon to be four, will display life-like images in the parlor, as it is called.
It is curious that Bradbury does not describe much in the house of Montag. Instead, the simple, common words are used--"bed," "pillow," "night table," "chair," "the hall," "the wall(s)" "the floor"--all without any indication of shape, color, or design, suggesting a rather barren environment that in conformity with many other houses.
I think Ray Bradbury intentionally didn't go into great detail about Montag's house. He wanted us to understand the starkness and coldness of this society. In part one after Montag had met and talked with Clarisse, Montag goes home and the information that makes the biggest impression is the fact that three of the walls are covered with huge televisions. As Montag makes his way to his bedroom, we aren't given much description of the furnishings or how the house looks. As he opens the bedroom door, we are given the sense of just how stark Montag's reality is.
It was like coming into the cold marbled room of a mausoleum after the moon had set. Complete darkness, not a hint of the silver world outside. The windows tightly shut, the chamber of a tomb-world where no sound from the great city could penetrate.
The feeling of coldness is a metaphor for how cold Montag's world is. He has no real relationships and can't have a real thought of his own.
The room was cold but nonetheless he felt he could not breathe. He did not wish to open the curtains and open the french windows, for he did not want the moon to come into the room. So, with the feeling of a man who will die in the next hour for lack of air he felt his way toward his open, separate, and therefore cold bed.
Bradbury wanted to convey the loneliness and hopelessness that Montag was feeling. Even his own home was a cold and unwelcoming place. The one place that should have made Montag feel comfortable made him miserable. This is the beginning of Montag making some major discoveries for himself as he begins to change his life forever.