Fog machines and hazers. A hazer puts an even, almost invisible veil across a whole room and holds it for hours; a fogger makes a visible cloud that lifts in minutes. Lighting rigs want the first, dance floors and entrances want the second.
Fog is a thick, visible cloud for effect; haze is a fine, even mist that makes beams and lasers read across the room. Several machines here do both.
It can, depending on sensor type and placement — heat and optical systems react differently to fog and haze. Tell us your venue and we'll flag the considerations.
Water-based fluids clear faster and suit quick effects; oil-based fluids hang longer, which is why a haze machine often runs them. We'll note the fluid per machine.
A commercial fog machine gives a visible cloud for a drop or a reveal; haze is what makes beams show all night. Both sit in the same event production equipment order as the lighting, because the control desk has to drive them together.
