You could put the fogger on a analog timer so it fogs periodically during the day.
Or,
Get this. I used one with a fogger in the past and it worked well. I never controlled a heat source with it that I remember.
https://www.amazon.com/Zoo-Med-Hygro...ium+humidifier
There are also other devices and tstats that can control humidity as well. Herpstats for example, from the 2 and above I believe.