Purchasing a continuous flow (instant) hot water system

1st Choice Hot Water are the experts for continuous flow gas hot water systems and instant electric hot water systems in Australia. We have over 40 years of experience with all types of hot water heaters. Our continuous hot water system prices are affordable to ensure you never run out of hot water again.

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We all know the frustration of jumping in the shower only to discover that someone else has used up all the hot water. With a traditional storage system, you have to wait hours for the water tank to heat up again before you can enjoy a hot shower. Instant or continuous flow hot water systems are designed to deliver a reliable stream of hot water whenever you need it for as long as you need it.

Continuous flow hot water systems are always on standby, but only start heating water when the hot tap is turned on. This activates a flow sensor and cold water is pushed through a heat exchanger. Gas continuous flow hot water systems ignite an internal burner while electric systems trigger a heating element. The water is instantly heated to the required temperature and then pumped directly to your tap.

Should I Choose A Continuous Flow Hot Water System?

Both types of continuous hot water systems (electric and gas) offer excellent energy efficiency when compared to traditional storage tank water heaters. As no water is stored, there is no heat loss from a tank or need to use more energy to keep the water at a consistent temperature. It means you can save on your power bills while enjoying an endless supply of hot water from your continuous flow system. Continuous flow gas hot water systems are a great choice if you’re after reliable, always-on hot water at a better price than traditional electric hot water systems. You can also use them with LPG Gas bottles in remote areas where natural gas isn’t available. Instantaneous gas hot water system prices will increase if you install the unit inside as it requires a flue, but the running costs should still be cheaper.

Pros & Cons of Continuous Hot Water Systems

Continuous electric hot water systems use less power than traditional electric water heaters, but still produce more greenhouse gas emissions than gas storage systems. They are also more expensive to run than gas because they operate on demand which is usually during peak times. Both gas and electric instantaneous hot water systems use more water than storage systems as they don’t start until the tap is turned on and there is a delay for the water to reach its peak temperature. Consider the benefits of an instant gas hot water system or continuous flow electric hot water system to decide if it’s the right hot water solution for your household. The expert team at 1st Choice Hot Water can also assist you to find the gas or electric continuous flow hot water system that best meets the needs of your family.

The good:

  • Never run out of hot water again.
  • Its smaller footprint can be wall mounted to save space with no need for a hot water tank.
  • Install a temperature controller to enable you to accurately deliver the right water temperature every time.

The not so good:

  • You might need to upgrade your gas lines to install, adding to your costs
  • Wastes around 1 to 2 litres of water during initial delivery.
  • Units do not operate at mains pressure.
  • You’ll wait longer for your hot water to be delivered than when you use a storage heater.


Is this system good for my needs?

Continuous flow hot water systems, also known as instantaneous or tankless hot water systems, are small units that heat water on demand. Unlike hot water tanks, which store and heat water in advance, continuous flow systems provide a never-ending supply of hot water. This makes them ideal for households with high demand. Generally, continuous flow water systems are available in both electric system and gas system models, making them a versatile option for most homes in Brisbane. If you're considering a continuous flow system for your home, be sure to speak with a licenced professional to determine the best continuous hot water system for your needs.

How do continuous flow systems work?

Continuous flow systems function by heating and transferring water through tiny copper pipes. Once water enters the system, a sensor activates the heating process. The heating element warms the water to the desired temperature before directing it to your faucet. Continuous flow water systems only heat for as long as the water is turned on; once the water is turned off, the system shuts off. There is no heat loss in these systems since no water is held at the appropriate temperature. When the hot tap is switched on, the units begin to heat. A continuous hot water system is a great way to save money on electricity. If you want a continuous flow hot water system with free installation from licenced technicians, just give us a call.

What are the different types of continuous flow systems?

Continuous flow hot water systems are typically available in a variety of sizes and volumes. Larger systems are appropriate for larger families, while the smaller units are best for locations with only one water outlet. A continuous flow water heater might be an efficient option in your home if you have high water consumption. Continuous flow systems can work with gas or electricity. The best fuel for your water system is determined by several factors, including availability, affordability, how energy-efficient it is, how environmentally friendly you want to be, energy bills, and so on. If you’re not sure whether a continuous gas hot water system or an electric one is best for your needs, we can give you a hand and make sure you make the right choice!

What are the advantages and disadvantages of a continuous flow system?

Generally, continuous flow AKA instantaneous hot water systems come with a range of benefits, including:

  • Low operating costs
  • No heat loss like there is with storage tank systems
  • The water heats up as needed, so you won’t run out of hot water and have to endure cold water
  • Several different types of energy including electricity, gas and/or solar can be used to power these systems

How long does a continuous flow hot water heater last?

On average, a continuous flow hot water system will last for around 15-20 years. However, this can vary depending on a number of factors, such as the quality of the unit and how well it is maintained. With proper care and maintenance, your continuous water system can provide you with many years of trouble-free operation. Here are some tips to help you get the most out of your system:

  • Regularly have your system serviced by a licenced professional - this will ensure peak efficiency and fix potential problems before they become serious
  • If you notice any leaks, drips, or other signs of damage, have them repaired immediately - don't forget to flush the unit regularly to remove any sediment that may have accumulated

Following these simple tips will help you get the most out of your continuous water system and ensure that it provides you with many years of reliable service.

Got questions we haven’t answered?

If you have any questions that we haven’t answered above, don’t hesitate to give our experienced and friendly team a call! We’ve helped thousands of Australian households to find their perfect hot water system. If you have been looking for a new hot water system to buy online, you will be pleasantly surprised by the huge range of systems we have on offer, from leading brands including Rinnai, Dux, Rheem and more. As well as continuous flow systems, we have heat pump systems, solar hot water systems, gas storage systems and more. We provide free installation along with great and efficient service, and our staff always do a fantastic job of helping our customers to find the right system for their needs.

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