As a Victorian householder, you could receive a hot water rebate if: you are the owner-occupier of an existing property where the system is to be installed, the household taxable income of all owners combined is less than $210,000 per year, the value of the property is under $3 million, the property address has not already received a hot water or a solar battery rebate under the Solar Homes Program, the hot water system to be replaced is at least 3 years old from the date of purchase
By completing the information once with Heat Pump Compare, it'll save you answering the same questions again and again with multiple installers.
When taking a photo, open the switchboard so installers can see if there are any circuits remaining.
Installers are looking to work out what type of unit you currently have and whether there is plenty of room and access for a new unit.