7. Does your household minimize/avoid heater use (e.g. dressing warmly, passive heating)?
Depending on where you live, heating and/or air conditioning probably account for a large slice of your carbon emissions. This means that anything you do to reduce how much heating/cooling your house needs makes a significant difference. Even just lowering a thermostat by 1° in winter and raising it by 1° in summer reduces heating/cooling emissions (and power bills) by 5-10%.
Dressing warmly in winter means that heaters can be used less often, or set relatively low. You can use free solar heating by allowing in winter sun through north-facing windows, and use thermal mass to trap that warmth.