Why My House is so Cold

Walking around my house, particularly in the morning hours, I find myself saying, "Wow.  It's really cold in here!  Did I remember to turn the heat back up?" 
Check the thermostat.
Yep.  It's turned up.
Well, then why is it still so cold?

Peek in the bathroom and what do I find?
A 16 lb. whale Cheeto hanging out on the vent.

Look around the bedroom, and what is that?
Oh, Betsy huddled around yet another vent.
(I tried to get her attention, but she was having obviously not interested in being photographed.)



And sure enough, the other bedroom vent has a large Sam on top.

Though it looks like Sam and Betsy are being generous leaving a bit of the vent exposed to help warm the air, this is not always the case.
In fact, as I sit here typing this, they have shifted their bodies and are now each covering their entire respective vent.

It's no wonder my house is so cold!