I am at around 80 degrees in my living room with the blower on. Back of the house is around 72. Insert has only been on for about 4 hours. I don't want it to hit 85 in my living room. Do people generally run the fan on auto all the time and have it blowing 24/7 for months? Will it burn out faster? Will it get too hot in the unit if I don't have the blower on?