Wanting heat in the house is a necessity, not an irritating request. I hope you document the conversations you had today (incl. the email) in case you ever need them or can use them. For him to deny his daughter heat is inexcusable.
My H did something similar once. When my S was only 2 months old the house got to 53 degrees b/c H was too busy going "out" to clean out the furnace and I couldn't run it until it was cleaned. I wound up going to a hotel and putting it to our joint account.
