
Gas hot water systems Sydney
Choosing a gas hot water system for your Sydney home? We help you pick between continuous flow and storage, natural gas and LPG, and the right size for your household, then install it and certify the gas work. Gas hot water installation across Sydney, 24 hours, no call out fee.
Call 24 hours02 9099 9138- $0 Call Out
- Within the Hour
- 0% Interest Available
- Licensed #379146C
Book a plumber
Tell us how many people live in the house, what you have now and where the unit sits. If your hot water has stopped completely, call us instead of using the form.
Our iron clad guarantee
- Complimentary safety inspection includedEvery job comes with a complimentary whole-system safety inspection for complete peace of mind.
- 100% satisfaction or we fix it freeNot happy with our work? We’ll come back and make it right at no extra cost.
- Full year warranty on all partsEvery component we install is backed by a comprehensive 12-month warranty.
- Lifetime guarantee on workmanshipOur installation work is guaranteed for life. If it fails due to workmanship, we’ll fix it free.
Expert gas hot water installation & repairs
When it comes to efficient and reliable gas hot water, experience the affordable service difference with Rapid Service Plumbing. We understand what Sydney homeowners need - hot water solutions that are dependable, cost-effective, and energy efficient. Choosing a gas hot water system means faster heating, lower energy bills, and access to advanced options like continuous flow and condensing systems, making it a smart choice for any home or business.
Sydney-based expertise with decades of experience installing and servicing gas hot water systems. :ocal knowledge for efficient solutions.
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Plumber within the hourComprehensive energy source conversions, allowing seamless upgrades from electric to gas for better efficiency and lower energy costs.
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Plumber within the hourLifetime workmanship guarantee on all gas hot water installations, plus clear, upfront pricing for total peace of mind.
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Plumber within the hourEmergency gas hot water repairs and servicing available 24/7/365, ensuring reliable hot water whenever it’s needed most.
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Plumber within the hourWide selection of leading gas hot water brands and modern system options - including instant and solar-boosted setups, to suit every Sydney home and business.
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Plumber within the hourWhich gas hot water system suits your Sydney home?
Most people choosing a gas hot water system are weighing a few clear trade-offs. Knowing which side of each one you sit on makes the quote quick and the install right.
Replace it today
02 9099 9138Plan an upgrade
Replace it today
The old tank has failed and the house has no hot water
A split seam or a rusted tank cannot be repaired. We aim to have a plumber with you within the hour and we tell you straight away what the replacement involves.
Plan an upgrade
The unit works but is near the end of its life
Time to choose carefully. You can compare types and sizes without having cold showers while you do it.
Replace it today
Water is pooling around the base of the tank
A leak from the tank body means the inner lining has gone. The system is being replaced, not repaired.
Plan an upgrade
Your bills have crept up over a few years
An older storage unit loses heat all day. A newer continuous flow system heats only what you use.
Replace it today
A family of five running out of hot water mid shower
An undersized unit cannot keep up. Sizing is part of the install, and we match it to the number of people and bathrooms.
Plan an upgrade
Planning a bathroom renovation
Moving or adding a unit is cheapest while walls are open. Tell us before the tiler arrives.
Replace it today
You are paying rent or selling soon with no hot water
A working system is expected by tenants and buyers. A quick replacement settles it without delaying the date.
Plan an upgrade
Thinking of switching from electric to gas
Gas can heat faster and cost less to run, if gas is connected to the property. We check the supply first.
Not sure which system suits you?
Call us and a licensed plumber will go through the options and give you a straight price.
Answered 24/7$0 call out fee
The 24 hour plumbing service Sydney trusts
Each gas hot water system installed by Rapid Service Plumbing is delivered in strict accordance with Australian regulations and includes a comprehensive workmanship warranty, giving property owners total confidence in the safety, efficiency, and quality of every installation.

- Licensed #379146C
- Fully stocked van
- Honest pricing
The rising popularity of gas hot water systems
Why gas for your hot water? Gas hot water is increasingly popular due to its cost-effectiveness and advanced technological features. They’re designed to meet the demands of modern living, providing consistent hot water at lower operational costs. Whether you’re upgrading your home or struggling to manage the cost of living, gas hot water systems provide a reliable and efficient solution.
At Rapid Service Plumbing, we provide fully comprehensive solutions tailored to meet all your gas hot water needs. Whether you’re starting from scratch or replacing an old or failed unit, we supply and install a wide range of high-quality, modern gas hot water systems from the most trusted brands, always with affordability and care in mind.
If you’re considering making the switch, our licensed Sydney gas fitters can also convert your property from electric to gas, helping you improve efficiency and cut down on rising energy bills.
To keep your system in top condition, we offer thorough maintenance and servicing, including detailed inspections, professional cleaning of key components, and fine-tuning to extend performance and longevity. And if things go wrong, our experienced hot water technicians and gas fitters are always on hand for fast, reliable repairs, ensuring your gas hot water system runs smoothly and efficiently at all times.
Talk to a plumber now
Free advice over the phone at any hour, and no call out fee.

Local service, national standards
Here at Rapid Service Plumbing, we’re not just another Sydney plumbing service - we’re a fixture of the Sydney community. We pride ourselves on not only matching but exceeding customer expectations, and proudly service the entire Sydney region & beyond. We offer:
- 1100% Guaranteed Workmanship: We also proudly stand behind our work with a ‘resolve or revisit’ warranty.
- 224/7/365 Emergency Service: Our friendly team is always ready to assist you through the most difficult moments - any time, any day, any night.
Choosing and installing a gas hot water system
The best gas hot water system for you depends on the type, the gas you use and the size. Pick the question you are stuck on.
A continuous flow unit heats water as it passes through and never runs out, which suits larger households and busy mornings. It is small and mounts on an outside wall.
A storage tank keeps a set volume hot all day. It needs more space and loses some heat, but suits a house with a steady, lower demand and a place for the tank.
We look at your household, your space and the flue position, then tell you which one we would put in our own home.
If your street has mains gas, a natural gas unit is the usual choice. Without it, bottled LPG at the side of the house does the same job.
The two fuels need different burners and regulators, so we confirm which the unit is set for before we connect it.
We check the gas meter or bottle supply can carry the new unit, because an older line sized for a cooktop may be too small.
The right size comes from how many people shower, how many bathrooms you have, and whether two outlets run at once.
Location matters for the flue. A gas unit needs clear air and a safe distance from windows, doors and vents, and we place it to meet the rules.
Where possible we reuse the existing pipe positions, which keeps the changeover short and the cost down.
We disconnect and remove the old unit, fit the new one, connect water and gas and fit the safety valves and flue.
A licensed gas fitter pressure tests the gas line and issues the compliance certificate that NSW requires for new gas work.
We show you the controls, leave you the paperwork and finish with a complimentary safety inspection.
How it works
How we install a gas hot water system in Sydney, from the first call to hot water at the tap.
Tell us about your household
Call 02 9099 9138 or book online. How many people live there, what unit you have and where it sits lets us quote the right system, not a guess.

Work order- $0 call out
- Answered 24/7
- Suburb and problem noted
Licensed #379146C, Sydney wide
Fit, connect and test
We remove the old unit, fit the new gas hot water system, connect water and gas, and test every joint. Our vans are fully stocked, so the job rarely waits on parts.

Work order- Licensed #379146C
- Fully stocked van
- Within the hour
Licensed #379146C, Sydney wide
Certified and explained
You get the gas compliance certificate, a walk through the controls, and a 12 month parts warranty. The work carries our lifetime workmanship guarantee.

Work order- Free safety inspection
- 12 month parts warranty
- Lifetime workmanship guarantee
Licensed #379146C, Sydney wide
Gas hot water system prices in Sydney
Gas hot water system prices depend on the type you choose and the state of the gas and water connections. Compare the best gas quotes on what is included, not just the total, and ask for the price before work starts.
Type of system
A continuous flow unit and a storage tank are priced differently, and models within each type vary by capacity and efficiency.
Size and capacity
A bigger household needs a bigger unit. We size it to what you use rather than selling you more than you need.
Changing fuel or position
Swapping electric for gas, or moving the unit to a new wall, means new pipework and often a new flue.
State of the existing lines
Corroded water pipes or an undersized gas line need replacing at the same time. We check both before we quote.
Removal and certification
Taking out and disposing of the old unit, testing the gas and issuing the compliance certificate are part of the job.
$0 call out fee
Any hour,
any day
- The price agreed before work starts
- 0% interest available
- Licensed #379146C, every plumber
Not sure which type to buy
Our guide sets out the main types of hot water systems and how they differ. Read it first, then call us for a price on the one that suits you.
The 2 Main Types Of Hot Water Systems In AustraliaAustralia’s favourite plumbing service provider
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258 suburbs across 9 regions of Sydney, from the Hawkesbury to the Shire, with a plumber on call in each.
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Frequently asked questions
What types of gas hot water systems are available?
At Rapid Service Plumbing, we offer three main types of gas hot water systems: storage-based tank systems for high-demand households, instant (continuous flow) systems that provide hot water on demand without running out, and solar-integrated systems that combine gas heating with solar power to improve efficiency and reduce running costs.
Are your gas hot water plumbers fully licensed and insured?
Yes, Rapid Service Plumbing’s local Sydney plumbers are fully licensed and insured, with ongoing professional development and safety training to ensure every job meets strict regulatory standards.
Do you offer a warranty on gas hot water system workmanship and parts?
All gas hot water system work comes with a lifetime workmanship warranty, and manufacturer warranties apply to the products we install. Warranty durations may vary by product.
Is there a call-out fee for gas hot water services in Sydney?
Rapid Service Plumbing offers a $0 call-out fee during regular hours (9 AM - 5 PM, Monday to Friday). Emergency or after-hours call-outs may incur a fee, depending on time, location, and holiday schedule.
Is a continuous flow or a storage gas hot water system better?
Continuous flow suits bigger households and tight spaces because it never runs out and mounts on a wall. Storage suits a smaller household with room for a tank. We look at how many people use hot water at once and where the unit would go, then recommend one.
Can I switch from an electric hot water system to gas?
Yes, if gas is connected to your property or you can use bottled LPG. We check the gas supply, run a new line to the unit, fit a flue and certify the gas work.
How do I know what size gas hot water system I need?
It depends on how many people live in the house, how many bathrooms you have and whether two showers run together. A couple in a unit needs far less than a family of five. We size it on site so you do not pay for capacity you will not use.
What does a gas hot water installation involve?
We remove the old system, fit the new one, connect the water and gas, fit the safety valves and flue, and pressure test the gas line. We tell you how long yours will take before we start. You get a compliance certificate and a walk through the controls.
How long does a gas hot water system last?
Most gas systems last around ten to fifteen years, depending on the water quality, the type and how well they are serviced. A tank that is leaking or a unit that needs repeated repairs is usually cheaper to replace than to keep patching.
Do I need a licensed gas fitter to install gas hot water?
Yes. In NSW the gas connection and flue must be done by a licensed gas fitter, and the finished work must be tested and certified. All our plumbers are licensed, under licence #379146C, and we give you the certificate.
Which areas of Sydney do you install gas hot water systems in?
All of Sydney, including the Eastern Suburbs from Bellevue Hill and Darlinghurst to Green Square, the North Shore, Manly and the Northern Beaches, the Inner West, Canterbury, the Sutherland Shire and the Hills District. We come with a fully stocked van.
Is there a rebate for a gas hot water system?
Rebates and incentives change from time to time. Check what is current with NSW Government before you buy. We will quote the gas system you want, show what is included and tell you if another type would suit the house better.
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