Net Zero Home Appliances: Energy Efficient Choices Choosing the right net zero appliances is one of the fastest ways for a DIY self-builder to cut bills and make a home work with solar and batteries. This guide explains which household devices count toward a net-zero target, the typical electricity they use, practical efficiency metrics (kWh/year, COP/EF), and clear steps for sizing, controls, and incentives so you can pick appliances that actually reduce both operational cost and carbon. TL;DR: - Prioritize reducing loads first (tight envelope, good windows): cutting 20–40% of heating/cooling need lowers appliance/HVAC size and PV cost. - Favor heat-pump appliances: heat-pump water heaters and space heaters typically deliver COP 2.5–4.0, saving 40–70% of energy vs resistive or direct electric. - Size and control to match PV/battery: estimate annual appliance kWh, size PV by local yield (1,200–1,500 kWh/kW-year), and time-shift major loads with timers or smart controls for cheaper batt...