The foremost goal of a curing system should be to provide a more consistent curing environment for concrete products – more consistent temperature and more consistent relative humidity. The more aesthetically demanding the concrete, the greater the importance of consistency. Hot and cold spots in the curing chamber can create a nightmare for the concrete producer. Besides affecting concrete strength, differences in temperature also affect the relative humidity in the curing chamber. These differences can lead to color differences as well as the occurrence of primary efflorescence.