Instantaneous gas hot water systems deliver fast and reliable hot water when you need it.

Tired of running out of hot water? Are your bills rising because you’re keeping a large hot water tank heated all day long, even when you’re not home? An energy-efficient instantaneous gas hot water system could be the perfect solution.

Also known as continuous flow gas hot water systems, these units heat water only when you need it, providing a reliable supply of hot water while helping to reduce energy consumption.

We can help you choose the right system, then supply and install it, often on the same day.

On this page

What is an instantaneous gas hot water system?
The benefits of instantaneous gas hot water systems
Is instantaneous gas hot water right for your home?
A compact design that creates more space around the home
Instantaneous gas versus storage hot water systems
Same-day hot water system supply and installation service
Rheem instantaneous gas hot water system prices
Instantaneous gas hot water system repairs

Call 0410 693 532 for immediate assistance.
We’re here to help.

What is an instantaneous gas hot water system?

Storage hot water systems keep a tank of water heated around the clock. An instantaneous gas hot water system heats water as it passes through the unit. The water is only heated as you need it.

When you turn on a hot water tap, the system detects water flow and automatically ignites the system’s gas burner. Cold water passes through a heat exchanger, where it is rapidly heated before being delivered to your shower, tap, bath or appliance.

Because water is heated on demand, you don’t need a storage tank, and you won’t be paying to keep water hot when nobody is using it.

The benefits of instaneous gas hot water systems

1. An endless hot water supply

One of the biggest advantages of a continuous flow gas system is the ability to provide hot water whenever you need it.

Unlike storage systems that can run out during busy periods, an appropriately sized instantaneous system can continue supplying hot water for as long as it’s needed. This makes them an excellent choice for larger families, homes with multiple bathrooms, or households with high hot water usage.

2. Savings on your energy bills

Instantanous gas hot water systems only heat water when it’s required. This can make them more energy efficient than traditional storage systems.

Because there’s no need to continuously reheat stored water throughout the day and night, this helps to reduce energy consumption and potentially lower your household running costs.

3. Compact design

Without the need for a large storage tank, instantaneous gas hot water systems take up far less space. They are typically wall-mounted and can be installed in a range of locations, making them ideal for homes where space is limited.

4. A consistent water temperature

Modern continuous flow systems are designed to deliver a steady water temperature, helping to improve comfort and reduce temperature fluctuations when multiple taps are in use.

instantaneous gas hot water systems — If you don’t have gas connected, there are instantaneous electric hot water systems. Call us for more information.

Is instantanous gas hot water right for your home?

Choosing the right hot water system isn’t always straightforward. This is where we can help!

When advising our customers on the best system for their needs, we consider several factors:

How many people live in the home
The number of bathrooms
Peak hot water usage times
Whether natural gas is available at the property
Your energy efficiency goals
Your budget
Installation requirements and available space

This is where the advice of our professional team can save you time and money – both now and in the long term. In fact, sometimes an instantaneous gas hot water system may not be the best solution. If not, we’ll tell you and discuss the alternatives available.

Don’t have gas at your property? Read about instantaneous electric hot water options here »

Saving our customers time and money

At Cheapa Hot Water, our experienced team helps homeowners throughout Sydney choose the right hot water system based on their specific needs. We take the guesswork out of the process and recommend a system that will provide reliable performance without being oversized or undersized.

A compact design that creates more space round the home

One of the often-overlooked benefits of an instantaneous gas hot water system is the amount of space it can free up around your home.

Traditional storage hot water systems can take up a significant amount of valuable floor space, particularly when installed on balconies, in courtyards, beside outdoor entertaining areas, or along the side of the house. This space could be put to much better us.

Because instantaneous gas hot water systems are compact and wall-mounted, they require very little space. This makes them an excellent choice for townhouses, units, apartments, and modern homes where outdoor space is at a premium.

For homeowners considering renovations or extensions, replacing a bulky storage tank with an instantaneous system can also open up new possibilities. We’ve helped many customers who wanted to extend a patio, improve their outdoor entertaining area, install additional storage, or simply create more usable space around their home, only to find that the existing hot water tank was in the way.

By switching to a compact continuous flow system, you may be able to reclaim valuable space without compromising on your hot water supply.

Instantaneous gas versus storage hot water systems

While both of these hot water systems have their place, there are some important differences and we hope the list below assists you in making the right decision.

Storage Hot Water Systems

Store hot water in a tank
Can run out of hot water during heavy usage
Require space for the storage tank
Continue heating water even when not in use

Instantaneous Gas Hot Water Systems

Heat water only when required
Provide continuous hot water
No bulky storage tank
Typically more energy-efficient than storage systems
Compact and space-saving

For many households, the improved efficiency and convenience of a continuous flow gas system make it an attractive long-term investment.

Same day supply and installation service

We are fully licensed to complete the installation from start to finish.

Did you know that the installation of instantaneous gas hot water system requires the expertise of multiple licensed trades, including a plumber, gas fitter and electrician? At Cheapa Hot Water Sydney, our team has the qualifications, licences and experience required to carry out all aspects of the installation. This means you won’t need to coordinate multiple contractors, wait for different trades to become available, or deal with unnecessary delays and additional costs.

Importantly, proper installation is essential to ensure your new hot water system operates safely, efficiently and in accordance with Australian regulations.

Our licensed technicians can supply and install leading brands of instantaneous gas hot water systems, ensuring your new unit is correctly sized and professionally fitted for your household’s hot water needs.

We’ll also inspect your existing plumbing, gas and electrical connections to ensure everything is compatible, compliant and operating safely before installation begins.

By having all the required trades under one roof, we can complete most installations quickly and efficiently, saving you both time and money. From removing your old system through to commissioning and testing your new unit, Cheapa Hot Water provides a complete installation service, making the entire process as smooth and hassle-free as possible.

When you choose Cheapa Hot Water Sydney, you’re choosing experienced professionals who get the job done right the first time.

Rheem instantanous gas hot water system prices

For an over-the-phone quote, call 0410 693 532 and talk to a hot water specialist (not a call centre).

Instantaneous gas hot water system repairs

Even the most reliable hot water systems require maintenance and occasional repairs to keep them operating efficiently.

If you’re experiencing problems such as no hot water, fluctuating water temperatures, low water pressure, ignition issues, unusual noises, or error codes appearing on your unit, call us for immediate assistance. You’ll speak directly with a hot water specialist, not a call centre or office staff member.

We provide prompt repair and servicing of all the major brands including Rheem, Dux, Rinnai, Aquamax, Bosch, Conergy, Hocking, Apricus, Vulcan, Edwards Solar, Solahart, Everhot and more.

Whether your system has stopped working altogether or simply isn’t performing as it should, we can diagnose the issue and get your hot water flowing again as quickly as possible.

For emergency help, call 0410 693 532. We’re here to help 24/7.

Further reading

Cheapa Hot Water Sydney

Every household has different hot water requirements, which means there is no one-size-fits-all solution. Choosing the right system can make a significant difference to your comfort, energy efficiency and long-term running costs. That’s where the experienced team can help.

Whether you’re installing a new hot water system, replacing an existing unit, dealing with an unexpected breakdown, or looking for professional servicing, contact our friendly team for advice you can trust. We offer complete hot water service you can rely on.

Contact

We service customers throughout Sydney

We offer a fast, same day hot water service to all Sydney suburbs including Northern Beaches, Upper and Lower North Shore, Eastern Suburbs, Hills District, Inner West, Western Suburbs + Blacktown, St George + Bexley, Campbelltown, Sutherland Shire, Penrith, Liverpool, Hornsby, and Ryde.

We are licensed and insured hot water specialists
We are experienced instantaneous hot water system repairers and installers
We are authorised repair and service agents for all major hot water brands
We repair and install thousands of hot water systems across Sydney
We offer fast same-day service where possible
We operate fully stocked service vehicles for faster repairs and replacement
We provide expert advice from qualified hot water technicians
We are trusted local Sydney hot water specialists