Several states and territories now have regulations regarding the types of water heaters that can be installed in homes, which generally promote the installation of low greenhouse gas emission water heaters. As a result of these regulations and the availability of government incentives, the number of heat pump water heaters being installed is expected to increase.

The Solar and Heat Pump Hot Water Reference Guide is a resource to assist plumbers in installing solar and heat pump hot water systems. This guide is part of a training program for plumbers being rolled-out under the National Framework for Energy Efficiency and the National Hot Water Strategic Framework.