Frosty window

Woke up to this view out the window this morning. I think it's the first real frost of the year.

Satisfying thing is the frost is on the outside of the window. Which proves the triple glazing must be working since it's 20 degrees in here.

It's going to be a sunny day so the frost will burn off and the inside temperature should rise. So looks as jf we can dispense with heating till next winter.