Replacing an old hot water system can feel expensive, but right now, Queensland homeowners are in a rare sweet spot. The Australian Federal Government is offering generous  heat pump incentives in queensland . to encourage households to switch to energy-efficient systems like heat pump hot water units.  And the best part? You can stack these rebates.  So if your old hot water system is costing you more than comfort, now is the best time to upgrade and get paid for doing it.