
"For the most part foggers and hazers are pretty simple devices; a heater, a pump and a control board. If there is not any output at all and it isn’t the pump or the control board, most of the time it is a dirty nozzle at the end of the heater.
Manufacturers recommend leaving the foggers on for 30-60min after each use so that it can burn off any unused fluid, however if you are like most everyone else then you don’t do this regularly. What begins to occur are builds up concentrated gunk reminiscent of dried toothpaste inside the fogger. After it clogs you can sort of clean it, in a limited way and only at first. The cleaning fluids are good for preventing build up but they do almost nothing to undo buildup.
Eventually a new clean heating element will be needed and a heating elements with installation often cost 75% of what a new fogger would.
The take away from this technical bulletin, remind customers that they can extend the life of their machines by remembering to leave their foggers on for 30min after each use.