space heating: 15.2%
water heating: 11.6%
refrigeration: 7.1%
lightning: 3.9%
television: 3.7%
computer: 2.4%
other: 40.7%
source: https://www.eia.gov/energyexplained/electricity/use-of-elect...
I heat my house so that I can run a freezer inside the heated house to lower the temperature back down to what it is outside sometimes. It's not entirely efficient.