Yes. Heat pump hot water systems can work effectively during winter, including the colder conditions experienced across Victoria and Melbourne.
A heat pump does not create heat in the same way as a traditional electric hot water system. It uses a refrigeration cycle to transfer available heat from the surrounding air into the water tank. This means it can continue operating even when outdoor temperatures are low.

Are Heat Pumps Less Efficient in Winter?
Yes, efficiency can reduce during colder weather because there is less heat available in the air. The system may also take longer to heat the water.
However, modern heat pumps are designed to operate in cold conditions and can still use significantly less electricity than conventional electric hot water systems.
How Can You Get the Best Performance in Winter?
For reliable winter performance:
- Choose the correct tank size for your household
- Install the heat pump in a suitable, well-ventilated location
- Use the system’s timer or schedule to heat water during the best operating period
- Consider a system with good cold-weather performance
- Have the system installed by a qualified and experienced installer
For homes with solar panels, scheduling the heat pump to operate during the day can also help make better use of your solar electricity.
Is a Heat Pump Worth It in Melbourne Winter?
For many Victorian households, yes. A quality heat pump can provide reliable hot water throughout the year while using much less electricity than a traditional electric resistance hot water system.
If you are replacing an old gas or electric hot water system, the right heat pump can also help reduce your household energy costs.
Need help choosing a heat pump for your home? EvoPlumb Services provides heat pump hot water supply and installation across Victoria. Contact us for advice and a quote.
Rebates, eligible products and government program requirements can change. Check current eligibility before purchasing.
