1900s! But I did just replace the water heater last spring. I need to replace the HVAC at some point because it’s over 20 years old…

~1800 sq ft, 3 floors + finished basement single family home

$197 (82 therms)

Nest thermostat set to 68 almost all of the time (65 when it detects we are away, but most roomies work from home)

includes gas for cooking and hot water heater