My house was built in 1885. 3600 sq feet. Newer appliances, dual zone heating/cooling (electric heat pump upstairs manufactured 2021, gas furnace downstairs, installed 2001). Keep the thermostats sort of low (60-65), use space heaters in individual rooms. Our bill last month was $676.

Highly recommend downloading CU’s app and monitoring usage that way. If you have a new meter - which you should - all three utilities update hourly.