Why would my heater blower not work ?

What is your question?

I have a 2015 Nissan Sentra and today with temp at -22c (-8F) my heater blower just decided it would not come on. I've checked the fuses and all are OK. Any idea what could it be ? Thank you.

What makes this problem better or worse?

Nothing

How long has your 2015 Nissan Sentra had this problem?

Just happened