Not only can you have heated Shade Structures but also cooled ones, with Celmist Cooling Solutions, for a truly year round solution. Celmist produces evaporative mist cooling, commonly known as fogging. This is a process whereby pressurised water is forced through specially designed nozzles, which in turn produce an ultra fine mist. When the mist evaporates there is an exchange of energy, which results in lowering the overall ambient temperature.