A new special on Spider-Man: Homecoming has revealed a couple of extra abilities of the film’s Stark-created suit.
Part of the Disney Channel’s A Fan’s Guide to Spider-Man: Homecoming focused on the suit and featured a clip of a short exchange between Iron Man and an unmasked Peter.
This explicitly confirms that, on top of an in-built GPS system for Peter, Stark can track the young hero wherever he is, highlighting the transition of Tony to father figure.
The heating is less directly important, but does answer the question of how Peter fights crime in winter wearing nothing but thin spandex.