Emergency Plumbing & Gas issues? Call or text 0404 823 184 for 24/7 service
Looking to reduce your power bills and make your home or business more sustainable? A solar hot water system might just be the right solution you’re looking for. At Alexander Gas & Plumbing Co., we specialise in the supply, installation, repair and maintenance of solar hot water systems — helping Brisbane locals stay warm while going green.
Whether you’re building a new home, upgrading an old unit, or looking to reduce your carbon footprint, our experienced team of plumbers and gas fitters can design a system that works for your lifestyle, property, and budget.


We’ve got no shortage of sunshine in Brisbane, so why not put it to good use?
Benefits of solar hot water include:
Installing a solar hot water is a great long-term investment, especially for families, shared households, and commercial spaces with consistent water use. And thanks to our Brisbane climate, solar systems work efficiently year-round with minimal fuss. You might also be able to take advantage of existing rebates or STC’s dependent on the type of system you choose. Ask us for more details or you can check out the Clean Energy Regulator website: https://cer.gov.au/
From off-the-grid setups to hybrid boosted systems, we install and maintain it all:
We work with all types of configurations – thermosiphon, split systems, evacuated tube, and flat plate collectors – and we’ll help you find the one that suits your property and goals.

At Alexander Gas & Plumbing Co., we’re your complete solar hot water specialists across Brisbane and South East Queensland. Whether you’re looking to install a new system, repair an existing one, or upgrade your current setup, our licensed team has the expertise to deliver exceptional results.
Professional installation of new solar hot water systems for homes and businesses across Brisbane. We handle everything from initial site assessment to council permits and final commissioning. Our installations include:
✔ Complete system design tailored to your property
✔ Council permits and compliance certification
✔ Professional mounting and plumbing connections
✔ System commissioning and testing
✔ Comprehensive warranty coverage
💧 Did You Know? We can supply & install all the major brands and we comply with all Queensland Government regulations.
When your solar hot water system isn’t performing as it should, our experienced hot water plumbers can diagnose and fix the problem quickly. Common repairs we handle include:
✔ Faulty circulation pumps and controllers
✔ Damaged solar collectors or tubes
✔ Leaking pipes and connections
✔ Temperature sensor replacements
✔ System efficiency improvements
Regular maintenance keeps your solar hot water system running efficiently and extends its lifespan. Our maintenance services include:
✔ Annual system performance checks
✔ Cleaning of solar collectors
✔ Inspection of all connections and fittings
✔ Pump and controller testing
✔ Efficiency optimisation recommendations
💡 Pro Tip: Regular annual maintenance checks can save you headaches and dollars. Ask us about scheduling a check before Winter each year!
Upgrading an old or inefficient system? We can help you choose and install the best modern solar hot water solution for your needs:
✔ Old electric to solar conversions
✔ Gas to solar system upgrades
✔ Collector and tank replacements
✔ Controller and pump upgrades
✔ Split system conversions
🚨 Water Temperature Safety: We can ensure hot water doesn’t exceed 50°C in to prevent scalding risks.
Solar hot water problems don’t wait for business hours. That’s why we offer 24/7 emergency services across Brisbane:
✔ Available 24/7 for urgent repairs
✔ Rapid response times to minimise disruption
✔ Emergency hot water restoration when you need it most
✔ Temporary hot water solutions while repairs are completed
💡 Pro Tip: If you hear any noises or detect a leak, don’t panic but don’t wait either. Contact us quickly on 0404 823 184.
Not sure what solar hot water system is right for your Brisbane property? We offer comprehensive assessments:
✔ Site evaluation to determine optimal system size and type
✔ Detailed written quotes with no hidden costs
✔ Rebate and incentive guidance to maximize your savings
✔ Honest recommendations based on your specific needs and budget
We also specialise in larger commercial and industrial solar hot water installations:
✔ Hotels, motels, and accommodation facilities
✔ Gyms, sports clubs, and recreation centers
✔ Manufacturing facilities with hot water needs
✔ Government buildings and schools
✔ Multi-unit residential developments
💡 Pro Tip: Our site assessment can assist you with the best hot water solution for your business no matter size, location or budget.


We work with the best-performing solar hot water systems available in Australia, including:
Not sure what you need? We’ll walk you through it all – just honest advice and reliable service.
✅ Licensed and experienced solar hot water installers
✅ Fully compliant with government and council regulations
✅ Master Plumbers & Queensland Gas Association members
✅ Experienced across residential, commercial & government projects
✅ Tailored advice for Brisbane’s unique climate
✅ Upfront pricing, no sales fluff
✅ We tidy up better than your kids do (probably)
From small family homes to massive warehouses and government sites, we’ve helped hundreds of Queenslanders harness the power of the sun – and we’re ready to help you too.

Ready to make the switch to solar or upgrade your existing system? Our team will make sure everything’s done properly, safely, and with minimal disruption — whether you’re in a residential or commercial facility.
📞 Call us now on 0404 823 184 for your solar hot water assessment
📧 Contact us online for a detailed quote
⏰ Available 24/7 for emergency solar hot water services
All our solar hot water work comes with comprehensive warranties and is fully compliant with Queensland regulations.
Most Brisbane families save 60-70% on their hot water bills with solar hot water systems. With Brisbane’s excellent sunshine (2,800+ hours annually), a typical household can save $600-1,200 per year on electricity costs. The savings are even higher if you’re currently using electric hot water heating.
Quality solar hot water systems typically last 15-20 years with proper maintenance. The harsh Brisbane sun and occasional severe weather make professional installation and regular maintenance crucial for maximum lifespan. Most major components come with 5-10 year warranties.
Queensland residents can access STCs (Small-scale Technology Certificates) which provide upfront discounts of $500-1,500 depending on your system size and location. Some local councils also offer additional rebates. We’ll help you understand exactly what rebates apply to your situation and handle all the paperwork for you.
Absolutely! Modern solar hot water systems work efficiently even on cloudy days and during Brisbane’s mild winters. Most systems include electric or gas boosting to ensure you never run out of hot water. Brisbane’s climate is actually ideal for solar hot water year-round.
Solar hot water systems are relatively low maintenance. We recommend an annual professional service to check pumps, controllers, and collectors. Simple tasks like keeping collectors clean and checking for leaks can be done by homeowners. Proper maintenance ensures optimal performance and extends system life.
Most Brisbane homes are excellent candidates for solar hot water. We need a north-facing roof area (or close to it) that receives good sunlight and can support the weight of collectors. Our site assessment will determine the best system and placement for your specific property.
Solar hot water systems typically cost $3,000-8,000 installed, depending on size and type. However, with government rebates and the money you’ll save on electricity bills, most systems pay for themselves within 3-5 years. We provide detailed written quotes with no hidden costs.
Both options work well in Brisbane. Electric boosted systems are simpler and cheaper to install if you don’t have gas connected. Gas boosted systems heat water faster and can be more economical if you already have natural gas. We’ll recommend the best option based on your home’s setup and usage patterns.
System sizing depends on your household size and hot water usage. As a general guide:
We’ll calculate the right size based on your specific needs during our site assessment.
Most residential solar hot water installations in Brisbane take 1-2 days. This includes mounting collectors, installing the storage tank, connecting plumbing and electrical components, and commissioning the system. We’ll provide a clear timeline during your quote.
Yes! We regularly help Brisbane homeowners upgrade from electric or gas hot water systems to solar. This often involves removing your old system and installing new solar collectors and a storage tank. The upgrade process typically takes 1-2 days.
We offer 24/7 emergency services across Brisbane for solar hot water repairs. Most issues can be diagnosed and repaired quickly. Common problems include pump failures, controller issues, or sensor malfunctions. We carry common parts on our service vehicles for faster repairs.
We typically set solar hot water systems to heat water to 60°C in the tank, with a tempering valve reducing it to 50°C at your taps. This ensures efficient operation while preventing scalding and meeting Australian plumbing standards.
Most solar hot water systems come with:
We’ll explain all warranty coverage in detail and help with any warranty claims if needed.
Yes! We specialise in larger commercial solar hot water installations for hotels, gyms, restaurants, manufacturing facilities, warehouses, apartment buildings and government buildings. Commercial systems require careful sizing and design – we handle everything from assessment to ongoing maintenance.
We offer 24/7 emergency services across Brisbane for solar hot water repairs. Most issues can be diagnosed and repaired quickly. Common problems include pump failures, controller issues, or sensor malfunctions. We carry common parts on our service vehicles for faster repairs.

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