
Upgrade to an energy efficient instantaneous hot water system with Service First Plumbing today!
Old school hot water tanks constantly heat water, wasting power even when you're not home.
An instant tankless system only heats water on demand, saving you money every single day.
Our licensed plumbers will help you find and install the right instant hot water system for your home, so you can start enjoying endless hot water and lower energy bills.
Call our hot water experts today 1300 375 908.
Replacing an old instant hot water system is a technical job that needs specialised knowledge of gas flow and venting, or high amp electrical systems.
Even the best units reach the end of their lifespan, so call our hot water replacement experts when it's time to upgrade.
Getting the right flow is all about precision. Our plumbers correctly size and install your new continuous flow unit to guarantee you reliable, endless hot water.
Instant hot water systems are either gas or electric. We’ll help you figure out which type is the best fit for your property's power supply and your hot water needs.
Gas is the way to go if you need the most powerful instant hot water system. These gas water heater units offer a much higher flow rate than electric models, meaning you can easily run two showers and a dishwasher at the same time without the water turning cold.
Gas instant hot water systems are ideal for larger homes and busy families who need a reliable, endless hot water supply.
Don't have a gas line? An electric instant hot water system is a fantastic alternative. These smaller units are ideal for homes or commercial spaces where plumbing is needed, but gas access is limited.
Electric water heaters remove the need for gas lines and venting, making them a simple, hassle free way to get hot water to a remote bathroom or a detached sink.
When your tankless unit throws an error code, you need a specialist! Our team at Service First Plumbing diagnose and repairinstant hot water systems fast.
There’s no issue with these systems we haven’t fixed, including scale buildup, faulty sensors, and precise gas or electrical adjustments.
We’ll quickly diagnose and fix the problem, ensuring you get your reliable, endless hot water back.

Hard water buildup is the biggest enemy of your instant hot water system. That’s why routine maintenanceis essential.
Our professional plumbers perform a system flush, which clears out mineral deposits that can damage the heating elements and lower your unit’s efficiency.
Regular servicing is the key to enjoying lower energy bills and reliable, endless hot water for years.
Installing a newinstant hot water system isn't like replacing a traditional tank. The job requires precision and specific technical expertise.
Getting the unit correctly sized is the most important step, as it directly guarantees proper flow and precise temperature control .
Our licensed plumbing team ensures the proper venting, gas pressure, and dedicated electrical supply are all perfectly set up.
We manage the entire installation, making sure your system delivers the reliable, endless hot water you expect.
Our team is trained to work on all major hot water brands. We provide reliable service and keep common spare parts in stock, ensuring your repair is always fast.
✔️ Zip Hot Water Systems
✔️ Vulcan Hot Water Systems
✔️ Thermann Hot Water Systems
✔️ Stiebel Eltron Hot Water Systems
✔️ Rinnai Hot Water Systems
✔️ Rheem Hot Water Systems
✔️ Dux Hot Water Systems
✔️ Chromagen Hot Water Systems
✔️ Bosch Hot Water Systems
✔️ Aquamax Hot Water Systems
✔️ And Many More…!

Our team knows continuous flow water heaters inside and out, making sure their on-demand heating technology is working perfectly.
Call our friendly team on 1300 375 908 or complete our enquiry form today for hot water system work that maximises your energy savings!
Would you like a free quote from our Sydney Plumber Team?