The Most Popular Hot Water System in Australia (2025 Buyer Trends)
Choosing the right hot water system is one of the most important decisions for any Australian household. With energy prices climbing and new government incentives in play, homeowners are making the switch to more efficient technologies.
So, what’s the most popular type of hot water system in Australia right now?
In 2025, heat pump hot water systems are leading the market in both new installs and replacements—surging over 70% in uptake within the past 12 months.
Let’s unpack why.
Why Heat Pump Hot Water Systems Are the Top Choice
Across Brisbane, the Sunshine Coast and greater Queensland, we’re seeing a sharp shift away from electric storage and gas systems. Here’s why heat pumps are dominating new installations:
- Massive Energy Efficiency Gains
Heat pumps use electricity to transfer heat, rather than generate it directly—making them up to four times more energy efficient than traditional electric units.
- Standard electric storage: 3.6kWh per day
- Heat pump system: ~1kWh per day
- That’s a saving of up to 70% on energy bills
- Government Incentives & Rebates
Programs like the QLD Energy Efficient Appliance Rebate and Small-scale Technology Certificates (STCs) are making high-efficiency systems more affordable.
Homeowners can often claim $500–$1,000 back, depending on the system and install location.
- Reduced Emissions
Heating water accounts for 20–25% of household energy use, and switching to a heat pump can cut annual CO₂ emissions by over 1 tonne per home. - Future-Proofing as Gas Phases Out
With several states (including Victoria and the ACT) beginning to phase out new residential gas connections, electric systems are the way forward.
Hot Water System Installation Trends (Backed by Stats)
Here are the current market trends as of mid-2025:
Heat Pump Systems
- 70% increase in installations year-over-year
- Over 500,000 units installed in Australian homes
- Account for majority of new builds and replacements
Electric Storage Systems
- Still common in older homes, but phasing out due to high running costs
- Use 3–4x more electricity than heat pumps
Gas Systems (Instant & Storage)
- Declining in uptake due to cost and policy shifts
- Still viable where gas lines exist, but long-term viability is shrinking
Best Hot Water System for Queensland Homes
If you’re living in Brisbane, North Lakes, Redcliffe, or anywhere across SEQ—here’s what matters:
- Climate compatibility: Heat pumps work efficiently even in cooler winter temps
- Off-peak tariff compatibility: You can pair heat pump systems with solar or battery setups
- Noise considerations: Modern systems are quieter than early models
- Space-saving: Compact heat pump systems now suit both houses and townhouses
For most households, a 270–315L heat pump system will comfortably supply a family of 4–5 with reliable, affordable hot water—year-round.
Should You Upgrade Now or Wait?
If your existing system is over 10 years old, you’re likely wasting money on every bill. Even if it’s still working, the long-term running cost far outweighs the cost of a new install.
Plus, with rebates and energy savings combined, most heat pump systems pay for themselves within 3–5 years—and last up to 15 years or more.
RJT’s Recommendation for Hot Water in 2025
At RJT Plumbing & Gas, we’ve installed hot water systems in hundreds of homes across Brisbane and Moreton Bay. We’re not here to sell you what’s trending—we recommend what’s right for:
- Your budget
- Your property layout
- Your household size
- Your long-term goals (e.g. solar pairing or future energy upgrades)
If a heat pump system is the best fit, we’ll explain why. If a different option suits your space or lifestyle better, we’ll give it to you straight.
Ready to Upgrade Your Hot Water System?
We offer:
- Inspections and quotes
- Full installation with licensed plumbers
- Advice on rebates and energy savings
- Support with emergency hot water replacements
- 5 Star Service rating from over 300 Google Reviews
Contact RJT Plumbing & Gas today
We’ll help you choose a system that saves money, reduces energy use, and keeps the hot water flowing for years to come.
