Bests & Worsts Reviews from Amazon

This has a filter, so the nozzles don't plug. But totally dissolved solids, (calcium, lime, rust.. ) can't be filtered out. These will be left on your aluminum coils as the water evaporates and can only be removed with acid coil cleaner... Which also removes aluminum. Many large commercial units need sprinklers placed on them in extremely hot weather just to keep them running. Mineral build up is a huge side effect so it is used as a last resort. One more thing. If you do not have a TXV (thermostatic expansion valve) installed at your evaporator, you will most likely starve evaporator of refrigerant. Higher outdoor temperatures cause a higher pressure feeding the evaporator which gives it more capacity for a higher load. Spraying the condenser will simulate a colder outdoor temperature. Keep your condenser coils clean and this should not be necessary.