How to use "cooler" in a sentence

Jean Valjean continued his evening visits, but the relationship between himself and Cosette became cooler and more distant

The air was cooler in the hallway than it was in the rest of the house

Nevertheless, the room was much cooler than it had been only minutes ago.

She checked the walk-in cooler, inspected the yard-square grill, the griddle, the two Wolf ranges, the microwave, and the array of laborsaving appliances