That's what I've been doing (not setting the HD to high). But, it takes 15 minutes to dry my hair. oh well.
It takes me a long time to dry my hair too, but I'm getting it cut on Wednesday for summer.
Try turning the refrigerator to the "off" position before you dry your hair. This would probably free up the extra capacity. just do NOT forget to turn it back on again, when you are done!!