as clinton says how hot do you think the solution is after the fine mist has hung in the air for a second before hitting the carpet? once it hits the floor it's COLD, i mix my solution for the first job of next day the night before, never noticed any difference in the cleaning power of it. now a hot rinse, that's a different story, i have a tm and having the water really hot when rinsing a minging restaurant carpet, that makes a difference,
colin