How about your shed? Is it where the majority of your energy and CO2 emissions come from? These are the sorts of questions the latest wave of home energy audits should really be aiming to answer.
Thankfully the latest version of the government's energy efficiency scheme is set to double the incentives for people to install insulation to incentivise the process and introduce useful emissions profiles into energy demand accounting for the equipment we buy.
This has to be a good thing because like any tool, insulation can either improve a home's efficiency or put people off by making it too expensive.