Smart energy-efficient solutions to cut costs and improve hot water performance
Hot water is one of the biggest energy expenses in most households, so finding a system that balances performance with efficiency is essential. Whether you’re replacing an ageing unit or looking for a smarter alternative to reduce costs, there are several technologies designed to deliver reliable hot water while lowering your energy use.
Below, we explore three recent customer case studies that show how families are upgrading to modern, energy-efficient hot water systems. Each solution, whether heat pump, gas, or a 5-star upgrade, offers unique advantages to suit different needs, budgets, and household sizes.

Rheem heat pump hot water systems
Heat pumps are efficient and reliable.
For a Marrickville homeowner, replacing an old solar hot water system with a Rheem heat pump offered a smooth transition into the next generation of energy-efficient water heating. The installation was completed in the same position as the previous system, reducing plumbing adjustments and ensuring minimal disruption.
How heat pumps work
Heat pumps draw warmth from the surrounding air and transfer it into the storage tank, working much like a refrigerator in reverse. Because they rely on renewable ambient air rather than generating heat directly, they consume far less electricity compared with conventional electric or gas heaters.
Key benefits of heat pump technology
- Heat pumps provide hot water 24/7, rain or shine
- Heat pumps work in a wide range of climates, even cooler ones with backup elements
- Heat pumps feature straightforward installation without the need for roof panels
- Heat pumps can cut electricity usage by up to 65%
- Heat pumps can be eligible for government rebates and incentives
Comparing solar and heat pump hot water
Solar and heat pump systems both deliver excellent savings. Solar hot water systems is ideal when your roof has the right aspect and minimal shading, but heat pumps are often preferred where space or roof orientation is a challenge. The right choice comes down to household size, climate, and budget.
Why Rheem heat pumps stand out
With high efficiency ratings, strong warranty support (up to 7 years on the tank), and environmentally friendly refrigerants, Rheem’s heat pump range is designed for Australian conditions. They’re also a good fit for households wanting to move away from rooftop systems without sacrificing performance.

Energy-efficient gas hot water systems
Two Inner West families take steps to reduce their energy bills.
Hot water is one of the most important household essentials, yet many families only think about their system once problems appear. In Sydney’s Inner West, two families recently faced the challenges of ageing hot water units and both decided it was time to upgrade to a more efficient and reliable solution. Their stories highlight how different needs can lead to the same outcome: the benefits of a 5-star energy-efficient gas hot water system.
The Drummoyne Family: Switching from solar to gas hot water
After 25 years of service, a Drummoyne household’s rooftop solar hot water system had begun to fail. Leaks were causing visible stains on the ceiling, and repairs would only offer short-term relief. The family wanted a solution that would deliver peace of mind without the high expense of installing another rooftop system.
They chose a Rheem 5 Star gas storage hot water system, appreciating its:
- Lower upfront cost compared with solar replacement
- Reliable performance in all weather conditions
- Easy ground-level servicing and maintenance
- Strong mains pressure and fast recovery rate for busy family life
Our hot water specialists also safely dismantled and removed the old rooftop solar unit. Many plumbers simply disconnect and leave outdated solar tanks in place, which can cause roof damage over time. By removing and recycling the old system, the family not only avoided future risks but also enjoyed a neat, professional finish with their new gas system installed at ground level.
The Five Dock Family: From electric to high-efficiency gas hot water
In nearby Five Dock, another family had relied on a Rheem electric hot water heater for more than 20 years. Over time, the system could no longer keep up, delivering lukewarm showers and driving up energy bills. They decided it was time for a major upgrade.
After discussing their needs, the family selected the Rheem Stellar 360, a 5-star gas system known for its strong capacity and outstanding energy efficiency. This model provides:
- Proven 5-star gas energy savings
- A recovery rate of 200 litres per hour, ideal for large households
- First-hour capacity of 360 litres with a 160-litre storage tank
- Consistent mains pressure so multiple showers and taps can be used at once
- Long-term reliability, backed by a 10-year cylinder warranty
By switching from electric to high-efficiency gas, the family now enjoys consistent hot water, reduced running costs, and the reassurance of a durable Australian-made system.
Why energy efficiency matters
For both families, choosing a modern gas hot water system was about more than just fixing a failing unit. Hot water accounts for around 30% of household energy use, so upgrading to a 5-star efficient system helps:
- Cut monthly running costs
- Lower environmental impact
- Deliver reliable hot water for growing households
Make the switch to an energy efficient home
Whether it’s replacing a leaking solar unit or upgrading from an ageing electric tank, more and more Inner West families are turning to energy-efficient solutions for long-term savings and performance. With many options now available, it can be hard to know what route to take. That’s where we can help. At Cheapa Hot Water Inner West, we specialise in assessing the specific needs of your household and recommending the best energy-efficient hot water system for your home. If your unit is outdated, leaking, or costing you more than it should, contact us today for expert advice and fast, professional installation.


