‘Ducted air-source heat pump’ transfers heat between your house and the outside air. These heat pumps can discreetly heat and cool multiple rooms using air ducts in your roof space or underfloor. You can have multiple zones to control heating/cooling for used and unused rooms. This can reduce your electricity usage for heating by approximately 50% compared to other sources of heating. High-efficiency heat pumps also dehumidify better than standard central air conditioners, resulting in less energy usage and more cooling comfort in summer months.