if the dryer is turned on from a cold start, it must warm up to the proper temperature and the dew point of the air must be reduced to –30°c (–20°f) or below before drying time can be counted. carbon neutral means that the carbon released during the use of the fuel, e.g. i like the look of the site. i might even try counting the exact crowd just to see if i can do it. we try to let kids take the reins in this class, but parents are welcome to stay and observe! 