Best Hot Water Systems

Nothing can sour your day quite like a shower turning cold, which is why you want a reliable hot water system that’s suited to your household. We go through what to consider when looking for a water heater, including your water use, energy efficiency, costs, and more. Continue reading...

300 listings
Thermann 6 Star Continuous Flow
Gas Continuous Hot Water Systems

Thermann 6 Star Continuous Flow

 · includes 3 listings
3.3 from 35 reviews

Latest review: Copes really well with high demand. Only issue with water temp has been when the power has tripped and we forget to turn the switch back on. Other minor thing is it does take slightly longer for hot

Price (RRP) $1,054.68 to $1,299.24

  • Build Quality
    4.0 (12)
  • Value for Money
    3.5 (15)
  • Cleaning & Maintenance
    4.1 (9)
  • Noise Level
    4.4 (11)
  • Temperature Consistency
    3.4 (16)
  • Heating Speed
    3.6 (16)
Rheem Stellar/RheemPlus 5 Star
Gas Hot Water Storage Systems

Rheem Stellar/RheemPlus 5 Star

 · includes 5 listings
2.5 from 109 reviews

Latest review: Installed our Rheem 18 months ago but found the pilot light keeps going out randomly. It has done this since new but started to get worse after the 12 month warranty was up. Paid a plumber $400 to

  • Build Quality
    3.3 (18)
  • Value for Money
    3.6 (17)
  • Cleaning & Maintenance
    4.1 (15)
  • Noise Level
    4.2 (15)
  • Temperature Consistency
    3.4 (16)
  • Heating Speed
    4.0 (15)
AquaMAX G390SS
Gas Hot Water Storage Systems

AquaMAX G390SS

2.8 from 46 reviews

Latest review: installed march 2021. pilot light easy to relight but I shouldn't have to do it so often! Previous unit was a vulcan that never missed a best i over 20 years. This unit has been a disappointing

  • Build Quality
    4.5 (6)
  • Value for Money
    4.2 (6)
  • Cleaning & Maintenance
    4.3 (6)
  • Noise Level
    4.7 (7)
  • Temperature Consistency
    4.3 (6)
  • Heating Speed
    4.5 (6)
Bosch Compress 3000
Solar Water Heaters

Bosch Compress 3000

2.9 from 37 reviews

Latest review: Purchased it in Apr 2017 and in the period of 4 years, had it repaired twice under warranty and twice out of warranty. Heating of the water during winter is bad. Won't be buying another heat pump or

  • Build Quality
    2.8 (13)
  • Value for Money
    2.4 (18)
  • Cleaning & Maintenance
    2.7 (13)
  • Noise Level
    3.1 (16)
  • Temperature Consistency
    3.2 (13)
  • Heating Speed
    3.2 (13)
Solahart L Series
Solar Water Heaters

Solahart L Series

2.6 from 66 reviews

Latest review: Product is relatively new, have problems supplying hot water, called local service line, came twice and told me nothing wrong with the unit, but problems still exist, no hot water, they wanted me to

  • Build Quality
    3.3 (4)
  • Value for Money
    3.0 (4)
  • Cleaning & Maintenance
    3.7 (3)
  • Noise Level
    5.0 (2)
  • Temperature Consistency
    4.3 (3)
  • Heating Speed
    4.0 (3)

Related Articles

Previous
The right to repair: which brands are making it easier for you to fix their products?

The right to repair movement in Australia is calling for companies to make it easier for their products to be repaired. Here are some electronics and appliance manufacturers who are starting to listen and make it more feasible for consumers to repair, rather than replace, their items.

Clara V.
Clara V.
the-right-to-repair-which-brands-are-making-it-easier-for-you-to-fix-their-products
Make staying at home more enjoyable with these products and tips

Staying at home doesn’t have to be a drag, even if you’re isolating. With the right products, you can still eat, drink, and relax as if you’re on holiday, so that your summer staycation is something special.

Clara V.
Clara V.
make-staying-at-home-more-enjoyable-with-these-products-and-tips
Best Household Appliances Awards 2022!

Home is where the heart is. And with these reliable, Award-winning household appliances, home can be where the rest of the body and mind take comfort, too. Based on consumer reviews over the last year, we've picked the best household appliances to buy in 2022, from air purifiers to steam mops.

Avleen M.
Avleen M.
best-household-appliances-awards-2022
Next
Dux Prodigy 5
Gas Hot Water Storage Systems

Dux Prodigy 5

 · includes 10 listings
2.4 from 151 reviews

Latest review: Had the 3-star Prodigy for 10 years. Decided to upgrade to the 5-star unit. Pleased I did. Gas bill has reduced. Installer did the swap over in about 2 hours. All smooth and no issues. I recommend

  • Build Quality
    2.9 (72)
  • Value for Money
    3.1 (72)
  • Cleaning & Maintenance
    3.2 (61)
  • Noise Level
    3.8 (63)
  • Temperature Consistency
    3.6 (71)
  • Heating Speed
    3.7 (73)
Rheem Rheemglas Water Series
Electric Hot Water Storage Systems

Rheem Rheemglas Water Series

 · includes 16 listings
3.1 from 21 reviews

Latest review: I just replaced the old hot water system in our house (101 series 250L Electric storage)after 27 years, as it was starting to not heat sometimes and the water wasn't as hot. Checked inside for the

  • Build Quality
    3.0 (2)
  • Value for Money
    3.0 (2)
  • Cleaning & Maintenance
    5.0 (1)
  • Noise Level
    5.0 (1)
Quantum Energy AC4 Series
Gas Hot Water Storage Systems

Quantum Energy AC4 Series

 · includes 5 listings
2.4 from 71 reviews

Latest review: Purchased in 2018 on plumbers advice, wish I’d read these reviews beforehand! Had it checked by an independent mechanic, the compressor had gone. The service call centre is manned by a very a

  • Build Quality
    1.7 (22)
  • Value for Money
    1.6 (22)
  • Cleaning & Maintenance
    2.1 (21)
  • Noise Level
    2.1 (21)
  • Temperature Consistency
    3.0 (18)
  • Heating Speed
    2.8 (17)
Rinnai B26
Gas Continuous Hot Water Systems

Rinnai B26

2.5 from 46 reviews

Latest review: Had an early model B26 for over 10 years until it started leaking water - so got it replaced , however you can only buy the 50 deg model now - you can increase to 55degs from memory , but that is

  • Build Quality
    2.8 (31)
  • Value for Money
    2.7 (31)
  • Cleaning & Maintenance
    3.0 (25)
  • Noise Level
    3.2 (29)
  • Temperature Consistency
    3.0 (29)
  • Heating Speed
    2.4 (32)
Midea 280L HP280
Electric Continuous Hot Water Systems

Midea 280L HP280

3.2 from 13 reviews

Latest review: Have not tried high demand yet but had to call service about display which I thought was not working. They were very helpful but said I had view from a step ladder at night to see the display. The

  • Build Quality
    3.1 (9)
  • Value for Money
    3.7 (9)
  • Cleaning & Maintenance
    3.3 (9)
  • Noise Level
    3.4 (8)
  • Temperature Consistency
    3.4 (8)
  • Heating Speed
    3.4 (9)
Rinnai B16
Gas Continuous Hot Water Systems

Rinnai B16

3.2 from 12 reviews

Latest review: Does anyone else get a whining and clicking noise inside the room of the house where the HWS sits. It just happens to be my study. Its gradually got louder over the last year or so with the installer

  • Build Quality
    3.6 (8)
  • Value for Money
    3.4 (8)
  • Cleaning & Maintenance
    3.4 (8)
  • Noise Level
    3.9 (8)
  • Temperature Consistency
    3.6 (7)
  • Heating Speed
    3.7 (7)
Chromagen Eternity 26
Gas Continuous Hot Water Systems

Chromagen Eternity 26

2.6 from 20 reviews

Latest review: We had a Eternity 26 installed 15 years ago. Since then its been going fine no issues. I'm now thinking it might be time to get it serviced. Not yet clear what a service consists of. If its just

  • Build Quality
    3.2 (10)
  • Value for Money
    3.2 (10)
  • Cleaning & Maintenance
    3.2 (9)
  • Noise Level
    3.8 (10)
  • Temperature Consistency
    3.0 (8)
  • Heating Speed
    2.6 (8)
Run On Sun ROSAHP250EL
Solar Water Heaters

Run On Sun ROSAHP250EL

4.6 from 5 reviews

Latest review: I've had a 24 tub one of these for a few years now & only had to back it up once with my 50 lt elec one . It cost me around $ 2400 with freight so easy to set up , don't know why i didn't have one

  • Build Quality
    5.0 (1)
  • Value for Money
    5.0 (1)
  • Cleaning & Maintenance
    5.0 (1)
  • Temperature Consistency
    4.0 (1)
  • Heating Speed
    4.0 (1)
Bosch HydroPower
Gas Continuous Hot Water Systems

Bosch HydroPower

 · includes 3 listings
1.7 from 286 reviews

Latest review: Less than 2 years old. It wont fire up. Piezo firing, but no gas. Called plumber and he removed wire gauze and blew in the opening- cleared whatever there and it worked. What have i done to deserve

  • Build Quality
    2.2 (23)
  • Value for Money
    1.9 (23)
  • Cleaning & Maintenance
    2.1 (18)
  • Noise Level
    3.1 (17)
  • Temperature Consistency
    2.2 (25)
  • Heating Speed
    2.2 (25)
Rheem Continuous Flow
Gas Continuous Hot Water Systems

Rheem Continuous Flow

 · includes 22 listings
1.8 from 91 reviews

Latest review: I was in a panic when my Junkers blew -literally-I went from a Junkers which had been on the wall for 30 years + to this Rheem which does not provide instant hot water as advised by the plumbing

  • Build Quality
    2.2 (10)
  • Value for Money
    1.5 (13)
  • Cleaning & Maintenance
    2.9 (7)
  • Noise Level
    3.4 (7)
  • Temperature Consistency
    2.2 (13)
  • Heating Speed
    1.8 (13)

Related Articles

Previous
The top-rated kitchen appliances for 2022!

Whether you love or loathe being in the kitchen, our community of reviewers have determined that out of over 9,000 appliances on ProductReview.com.au, these are the best available!

Avleen M.
Avleen M.
the-top-rated-kitchen-appliances-for-2022
How to be more eco-friendly when you're gifting this Christmas

Christmas seems to go hand in hand with consumption, but that doesn’t mean you can’t be eco-friendly with your gift giving. We’ve got tips for everything from shopping sustainably to zero-waste packaging, so that you can have a greener holiday season.

Clara V.
Clara V.
how-to-be-more-eco-friendly-when-youre-gifting-this-christmas
Christmas Gift Ideas for Mum

Since many mothers tend to spout selfless phrases like ‘please don’t spend any money on me,’ Christmas is a great opportunity to spoil your Mum. However, this can be a tricky feat if your mum hasn’t told you what kind of gift she’d be happy with.

Avleen M.
Avleen M.
christmas-gift-ideas-for-mum
Next
SolarOz Mains Pressure
Solar Water Heaters

SolarOz Mains Pressure

2.8 from 12 reviews

Latest review: Not fit for sale, I don’t see how this product paced any type of testing to be sold in Australia. Needs further RND, buy something more know and reliable as it not a cheap exercise to exchange. Sorry

  • Build Quality
    1.0 (1)
  • Value for Money
    1.0 (1)
  • Cleaning & Maintenance
    1.0 (1)
  • Noise Level
    1.0 (1)
  • Temperature Consistency
    1.0 (1)
  • Heating Speed
    1.0 (1)
Country Comfort Portable LPG Water Heater
5.0 from 4 reviews

Latest review: I purchased a Country Comfort Hot water system 3 years ago and for the last 2 years I have used it every day and it is still working great. Whenever I have needed assistance the team have been

  • Build Quality
    5.0 (4)
  • Value for Money
    4.8 (4)
  • Cleaning & Maintenance
    4.8 (4)
  • Noise Level
    4.0 (4)
  • Temperature Consistency
    5.0 (4)
  • Heating Speed
    5.0 (4)
Thermann Large Electric Storage
Electric Hot Water Storage Systems

Thermann Large Electric Storage

 · includes 12 listings
2.2 from 23 reviews

Latest review: Seems to work great, for the first 24 months. Brand new thermann unit installed only 2 years ago, and is already having issues and gas outages (not from using too much gas) then having to wait an

Price (RRP) $783.30 to $1,808.08

  • Build Quality
    2.4 (14)
  • Value for Money
    2.1 (15)
  • Cleaning & Maintenance
    2.9 (12)
  • Noise Level
    3.7 (11)
  • Temperature Consistency
    3.2 (11)
  • Heating Speed
    3.3 (10)
Bosch Pilot Ignition
Gas Continuous Hot Water Systems

Bosch Pilot Ignition

 · includes 2 listings
2.3 from 19 reviews

Latest review: The worst unit. If you want unreliable hot water buy one of these. Absolute

  • Build Quality
    2.4 (5)
  • Value for Money
    2.8 (5)
  • Cleaning & Maintenance
    1.3 (3)
  • Noise Level
    3.5 (4)
  • Temperature Consistency
    3.3 (4)
  • Heating Speed
    4.0 (4)
Gleamous GL5
Electric Continuous Hot Water Systems

Gleamous GL5

3.0 from 8 reviews

Latest review: I was really looking forward to using the GL6 unit. We installed it with a plumber as per the instructions and unfortunately we could NOT have a hot shower. Barely warm! The flow rate was so low to

  • Build Quality
    4.0 (1)
  • Value for Money
    1.0 (1)
  • Noise Level
    5.0 (1)
  • Temperature Consistency
    1.0 (1)
  • Heating Speed
    1.0 (1)
Page 2 of 6

Types of hot water systems

A gas hot water system mounted on a white brick wall.

Heating water for use in the bathroom, kitchen, and laundry uses over a quarter of the average household’s energy, which is why it’s important to carefully consider what kind of hot water system is right for you.

You’ll have to first decide what kind of heating method you want to use for your hot water system: gas, electric, solar, or heat pump.

Gas hot water systems · See All

Gas is quite an efficient energy source, so it can be a good option if you have a natural gas connection. Natural gas is significantly cheaper than LPG.

These systems are usually installed outdoors because they need adequate ventilation, but they can be installed indoors with a flue.

Pros

Running costs are cheaper than electric systems.
More efficient and environmentally friendly than electric models.

Cons

Initial cost is more expensive than electric systems.
Not as environmentally friendly as solar and heat pump options.
There’s uncertainty over gas prices in the future - it’s predicted it will become more expensive.

Electric hot water systems · See All

Electric water heating is relatively cheap to buy and install, but ongoing costs can be expensive. However, if your meter includes off-peak rates, then this should be cheaper.

Pros

Cheaper to buy and install than gas hot water systems.
Can be installed both indoors or outdoors.
Available in a variety of sizes to suit different households.

Cons

Most expensive to run because of electricity prices.

Solar hot water systems · See All

A solar hot water system needs to be installed in a sunny spot for it to be efficient. This means that they do tend to work better in certain parts of Australia, particularly Queensland and the Northern Territory. You might even want to buy a larger tank for days with less sun or when you want to use more hot water.

Most of these systems will still have either a gas or electric booster to ensure that hot water is always available, regardless of the climate.

Pros

Environmentally friendly.
Running costs are low, and may even provide a large chunk of your hot water for free.

Cons

Expensive to purchase, but government rebates and incentives can help offset this.
Their performance is dependent on the placement of the rooftop collector and the weather.

Heat pump hot water systems

Heat pump systems use electricity to transfer heat from one place to another rather than directly generating heat. These units need to be installed in a place with good ventilation, generally outdoors. Heat pump models can save you up to 80% on the cost of hot water compared to an electric storage system.

Pros

Highly efficient, making them economical to run.
Can be found in a range of sizes to suit different households.
Don’t require rooftop collectors, so can be a good option when solar access isn’t optimal.

Cons

The unit’s compressor can be noisy.
High initial cost, but government rebates may be available to help offset this.

Storage vs instantaneous hot water systems

A hot water system can be either an instant system or a storage tank system.

Instant systems

Also called continuous hot water systems, these only heat water when they're needed. They aren’t actually instant, but they usually just take a few seconds before you get hot water. Most models use gas, but you can still find electric models, which are typically only designed to heat water for a single water outlet.

A continuous flow system can be more suited to smaller households, as they’re cheaper to run and more practical than having a storage tank.

f you’re considering an instant hot water system, then you should consider its flow rate. You should opt for a higher flow rate if you have many water outlets in your home. A general rule of thumb is to get a flow rate of around 22 to 24L per minute for a house with two bathrooms.

Storage tank systems

These store a certain amount of heated water that can then be used throughout the day. Most gas, electric, solar, and heat pump systems use a tank.

They’re generally more cost-effective and so can be suited to households that use a lot of hot water; you just need to ensure you get a large enough tank to ensure the last in line for a shower isn’t left in the lurch mid-rinse.

If you have off-peak electricity available to your home, then these systems can take advantage of these cheaper tariffs.

These tanks are insulated, but it’s still a good idea to install them in an insulated or sunny place to minimise heat loss.

A close up of a man washing their hands under a bathroom faucet.

What to consider when choosing a hot water system

There are a few other things you should consider when shopping around.

Your household size and energy use

Understanding the hot water needs of your household is key to getting the right hot water system. An undersized system means that someone will probably miss out on a hot shower, while a system that’s too large will mean you’re paying for something that you’re not fully using.

The average Australian uses around 40 to 50L of hot water per day - more if you take long hot showers or often use hot water to wash clothes.

Here’s a rough size guide for water heaters, but you should also consult the manufacturer of a hot water system you’re considering buying as well as seek advice from an installer.

For storage tank systems, consider the number of people in your household:

  • A 1-2 person household could be fine with a small storage tank of around 90L.
  • A 4-person household will need around 135-170L.
  • Households of 5 people or more may find it more economical to find a large tank of between 200-300L than install multiple continuous systems.

For continuous hot water systems, consider the number of hot water outlets in your home and peak usage:

  • A 2-bathroom household will need 22-24L/min flow rate.
  • If you expect 2 people to be showering at the same time, you need at least a flow rate of 14L/min.
  • There’s also the option to install multiple systems and have them in different parts of your home.

Energy efficiency

The most efficient type of hot water systems are heat pump and solar water heating systems.

If you’re shopping for an electric storage system, a gas storage system, or an instant gas hot water system, look for Minimum Energy Performance Standards (MEPS). You may see energy efficiency ratings on gas systems, but these aren’t government regulated.

Price

Excluding installation, prepare to pay the following upfront:

  • Gas hot water systems often cost between $900 and $2000.
  • Electric hot water systems usually cost somewhere between $500 and $2000.
  • Solar hot water system prices can vary a lot, but usually cost between $4000 and $8000.
  • Heat pump models range from $2000 to $4000.

Hot water system installation costs vary a lot depending on the job and system you opt for. If you’re switching out your current hot water system with one of the same capacity and in the same location, installation typically ranges from $300 to $700. If you’re moving the system to another location, then you may have to pay between $1100 and $2500 depending on what kind of plumbing and electrical work is required.

You should also check for warranties. While these vary, most hot water systems should come with a warranty of at least 7 years - the longer the warranty, the more the manufacturer backs the quality.

Look for government rebates and incentives

There are a range of incentives offered by the federal and state governments - such as the federal government’s Small-scale Renewable Energy Scheme - for households to switch to energy-efficient hot water systems, particularly solar and heat pump systems.

A hot water system installer may also be able to tell you of rebates that are available to those living in your area.