It was a little tricky to figure out how to set it because the icons on the screen and in the instruction manual are pretty smal
Seems to be effective for me.  It was a little tricky to figure out how to set it because the icons on the screen and in the instruction manual are pretty small, but I eventually got it set.  And I changed it later when I realized it starts up 30 minutes before the time I set (it explains that in the book, but you might miss it like I did).
Rating: 5 stars