Improving energy efficiency at home does not always require major renovations. Replacing older household equipment with modern systems can be one practical step homeowners may consider. Melbourne households can look at areas such as hot water and heating and cooling when planning an upgrade. Heat pump hot water systems can provide an electric alternative for water heating, while reverse-cycle air conditioning can provide both heating and cooling. The best option will depend on the property, household requirements and existing equipment. Planning carefully and choosing appropriately sized syst