Sims continue to receive 'Chilled' moodlet when indoors

I am having this issue as well but I do have a thermostat and it's set to warm.  I've sold and re-bought the thermostat, as I've been told they can be buggy.  When my sim turns it off and back on, things seem okay for a while but then it gets cold again.  Not a huge deal if they're in their winter stuff...but they're cold in bed while sleeping too and won't sleep in winter stuff.  

UPDATE: After a few updates, it's no longer having the issue.