Converting from a Rooftop Solar Hot Water System to a Heat Pump in Perth

If you’re experiencing issues with your existing rooftop solar hot water system or simply want a more energy-efficient solution, converting to a heat pump hot water system might be the ideal choice for your Perth home.
Why Convert from Rooftop Solar to a Heat Pump Hot Water System?
For many years, rooftop solar hot water systems have been a go-to option in Perth thanks to our plentiful sunshine. But over time, these systems can lose efficiency and become more prone to faults—especially when the storage tank is left exposed to harsh weather conditions on the roof. On top of that, replacing a rooftop solar system can cost over $8,000, which is significantly more than installing a heat pump system. Solar hot water also only performs at its best when the sun is shining, whereas a heat pump maintains the same high efficiency all year round, day or night.
Here’s why Perth homeowners are opting to replace their solar hot water system with a heat pump:
- Lower Ongoing Costs
Heat pumps operate like a reverse refrigerator, using ambient air to heat water. This makes them extremely energy efficient and cheaper to run—especially when paired with solar PV electricity.
- Ground-Level Access
Unlike rooftop solar systems that are difficult to service or replace, heat pumps are installed at ground level, making them safer, more accessible, and easier to maintain.
- No Need for Direct Sunlight
Heat pumps work day or night, rain or shine. Unlike rooftop systems, they don’t rely on sunny days to provide hot water, offering more consistent performance year-round.
- Compatible with Solar PV
Already have solar panels? A heat pump can harness your excess solar power to run—reducing your energy bill even further.
- Ideal Replacement Option
If your old rooftop system is leaking or your panels are deteriorating, a heat pump replacement is an excellent long-term investment.
What’s Involved in Converting to a Heat Pump?
At Ember Plumbing & Gas, we specialise in solar hot water system replacements in Perth, including conversions to high-efficiency heat pump systems.
Here’s what the process typically includes:
- System Removal
We safely decommission and remove your existing rooftop solar hot water system, including any roof panels and pipework.
- Ground Preparation
We’ll assess the best location to install your new heat pump unit at ground level, ensuring it complies with all relevant Australian Standards and safety codes.
- Installation of Heat Pump
We install your new heat pump system—such as the iStore 180L or 270L, or the trusted Rheem Ambiheat HDc-180—and connect it to your home’s existing plumbing and electrical supply.
- Compliance & Commissioning
We’ll test, commission, and submit the plumber’s notice for compliance. You’ll be left with an energy-efficient, whisper-quiet hot water system ready to deliver savings.

What Are the Best Heat Pump Hot Water Systems in Perth?
Ember Plumbing & Gas offers a wide range of heat pump water heaters to suit Perth homes, including:
- iStore 180L & 270L – Perfect for families, with fast recovery and excellent energy efficiency.
- Rheem Ambiheat HDc-180 – Built tough for Australian conditions with smart control systems.
- Stiebel Eltron & Rinnai models – Ideal for modern homes and apartments with high efficiency.
All our systems come with manufacturer warranties, and we offer free advice to help you choose the right model for your needs and household size.
How Much Does It Cost to Replace a Solar System with a Heat Pump in Perth?
Prices can vary depending on the complexity of the job, but as a general guide:
- Heat pump hot water systems start from $3,500 fully installed
We guarantee no hidden costs and the lowest heat pump installation prices in Perth—with top-notch workmanship and no call-out fee.
Why Choose Ember Plumbing & Gas?
✅ Perth’s hot water specialists
✅ Upfront pricing with no hidden fees
✅ Fully licensed and insured technicians
✅ Fast turnaround – same-day service available
✅ We handle everything from removal to install to council notification
✅ 5-star Google rating from hundreds of satisfied customers
Ready to Make the Switch?
Whether your current rooftop solar system is failing or you’re planning ahead to reduce energy bills, switching to a heat pump hot water system is a smart move for your Perth home.
Contact Ember Plumbing & Gas today for an obligation-free quote, expert advice, and Perth’s best prices on hot water system replacements.