Do I need to change anything in my home (retrofit) to have a ZEB?

You don’t need to make any changes to your home to have a ZEB, it will work with your existing setup and heating system, although you will need a hot water tank if you don’t already have one. The ZEB can work in homes with an annual energy usage of up to 16,000kWh and a heat loss of under 6kW – we’ll check whether a ZEB is the right fit for your home during a home survey.