Best Gas Water Heaters

Best customer service EVER. Problem solved immediately at no cost or effort to me. Awesome. Show details

Recently Purchased and installed a Dux 170 Ltr, Hot Water Service, through Bunnings. The whole experience was outstanding and very professional. From… Read more

buying at Bunnings to the Installation. The job was at commenced on the agreed day and finished promptly, with a friendly courteous manner. The Dux system is excellent, quiet and performs above our satisfaction.

Wow, just had the 21L always hot continuous Flo LPG hot water heater installed to replace a lesser known brand unit that I struggled with for 18… Read more

months that would make up its own mind to ignite. Hot water arrives at the shower, vanity and bath very quickly and as I am on tank water with little pre flow to waste. Very quiet operation. A blessing. Extremely happy. Great price from Bunnings with excellent service from them as well.

Absolutely fantastic water heater for our permanent van. Customer service is outstanding, personable and look after their customers. We broke the gas heater on installation and one call had an immediate solution above and beyond our expectations. Show details

Useless we have been putting up with cold water for the past 2 years. It takes ages to heat up and still is not hot. I have cold showers. We had friends stay and they could not believe what we have been putting up with. Show details

I hate this product, it works correctly 20% of the time, the rest of the time it cuts out as soon as it gets warm and water goes cold. You have to… Read more

turn it off then back on to warm it, then it cuts out again. Customer support was no help either, after performing a test the said it was working correctly, which it is not.

Purchase, delivery and installation were professionally organized without any problems. Communication and support from Bunnings, DUX and Hall & Baum… Read more

Plumbing Services were exceptional. The unit was installed and tested promptly. It operates smoothly and quietly without shortage of hot water during the family morning rush. I would strongly recommend DUX, as a perfect choice as the house hot water system. At the end it is the 5 star system.

Ok I built 2 houses a few years apart. Both had Rheem Stellars both had major problems over the years. The first one caught on fire. The replacement… Read more

failed after a few months. Got it fixed and then it died again. The second house same stuff apart from fire. Constantly replacing valves until it split underneath. Getting a new Vulcan tomorrow.

This unit works brilliantly, never misses a beat. I had a question that I thought was related to the system, I sent email for help. Within 24hrs man… Read more

called & solved it which wasn’t Thermann system problem & he never charged me a single cent. Happy to recommend Thermann & Stephen to anyone & everyone AAA+++

Bang for your buck – Just replaced our old Rheem gas hot water system with the Vulcan and immediately noticed the difference — hot water warms a lot quicker and is a lot warmer! Show details

First class product and service – Best camping purchase I have ever made friendly service and everything was delivered in a timely manner would highly recommend this Brand to everyone wanting a hassle free purchase and product! Show details

Do not purchase Aquamax 390 – I purchased an Aqua max in 2021. The unit is only 3 years old and has already stopped heating the water. We can’t have a shower for more than 15min… Read more

and water runs cold. We barely have any cold water running through as water would be freezing cold. Clearly they have a big problem with this unit wish I had read reviews before purchasing. I called Rheem to lodge a complaint and they wanted me to pay 274.00 just for call out. Then parts if required, I asked the consultant if she would be happy to pay $1,500 for a product that only lasted three years and of course the line went quite. Do yourself a favour and do not purchase this product.

From day 1 the water was never hot enough, and the unit was remarkably noisy, relative to fridges and my three heat-pump air conditioners. Then… Read more

after 4½ years of light use (I live alone) the compressor failed. Given the happy chappy on the Quantum website with his 20-year-old unit, I wasn't impressed, and Quantum initially responded to my complaint about the 2-year warranty by encouraging me to send in a list of required details for consideration. But with no hot water I had to get the compressor replaced pronto, at half as much again as the unit originally cost, after which Quantum stopped responding. I now realize that I will never recoup through the lower running costs the extra capital cost of their unit over a simple immersion heater, not having taken into account the equipment failing. I would never deal with Quantum again after this experience.

Trash unit, i had a plumber trying to fix it when it was still under warranty. He came at least 5 times. As soon as the warranty expired it played up again. This unit should not be allowed to be sold. Show details

Doesn't stop going. Its almost 30yrs old. Sometimes it does run out of hot water after 4 showers (two teenagers) but no problems after 30mins its… Read more

hot again. I recall the pilot light did blowout a few times during the past 25yrs. (I did turn the temp down a little a long time ago) PS: Have bought these at other properties (2014 2017) and they work really well.

I have a Rheem gas continuous flow water heater installed on 18/09/2025. It has worked without any problem until the 24/09/2025. I called the… Read more

plumber, on the 25/09/2025, who installed it and he said to me to unplug it, for few minutes, if I had no hot water. I had to do this operation 4 times between the 25/09/205 and the 30/09/2025 to get hot water again. Unfortunately, to day the 30/09/2025, the Rheem did not start again, and I have not hot water, in a middle of a shower. I am VERY DISAPPOINTED with this product ! I am waiting for the visit of the plumber today (30/09/2025) to fix it to be able FINALLY to have a full shower.

Recently, our 18 year old bosch 10P failed - there was a leak from the heat exchanger. It was spraying water. Apparently, it's not worth replacing… Read more

the heat exchanger - $650 for the part alone. The installer recommended Bosch 10H - it has no pilot light. In order to ignite, you turn on the tap which will automagically ignite and heat the water. Unfortunately, we find it hard to get the temperature desired. Also, we find 10H takes longer maybe 10-20s longer (but it felt like eternity) than 10P. The installer replaced the brand new 10H with a brand new 10P at no charge - bless their heart. 10P is the right choice for us even with pilot light on constantly.

Worked for a week stopped i fixed works great standard sort of water heater i think they're good

Don't install a Rheem! – My wife was conned into getting one of these by a plumber and I agreed by SMS because I was working remotely and couldn't talk turkey with the people… Read more

myself.

The unit takes way too long to wake up. Hence the money you save on gas storage costs will be spent on water wastage bills.

Ridiculous cost for what it is, obviously marked up according to the "savings" that you are supposed to be banking on gas. Well, let's see how long the thing lasts - it will need to see out the warranty and then some to get the dollars back.

Needs a powerpoint installed - extra $$$...

The biggest gripe is that the unit is simply not fit for purpose. Their claim is that the unit complies with the Australian standard, not exceeding 50 degrees so they set it to 48! I understand this is possibly to allow for ambient variation, but you have got to be kidding me. 48 degrees gives me 47 at the first outlet, about 43 at the last outlet. Our last storage heater gave very nice (50 degree tempered) water at the first outlet and believe me that 3 degrees makes a big difference...

Unreliable and Costly – Constant Issues with the C7 Thermal – We have had constant issues with this unit. After spending approximately $7,000 replacing taps, aerators, pipes, and a regulator to rule out other… Read more

causes, the problem remains unresolved. The common denominator is the C7 Thermal, which was installed less than three months ago. Which, within the first month required the hot water unit to be replaced. On a brand new unit. Despite this, I have yet to experience a consistent hot shower. The water temperature fluctuates so much that I cannot even rinse my hair before it turns cold.

This has been incredibly frustrating, and I am beyond disappointed. A hot water system should provide reliable hot water, this one does not. I would not recommend this product to anyone.

***Additional Information*** We are on our fourth unit within 6 months. Each dead. Guess what. I contacted the service company and they said there was hard water. The newest one, that lasted longer than the rest is dead. I had a different plumber out. He said it made no sense. He said the filter has no sediment or evidence of hard water. There is no evidence of hard water in the system at all. He then said he couldn't get the pilot light to start. I AM DONE. He is ripping it out next week. We are putting in an all together new system that is in no way related to this company. He also told me that the inconsistent water temp is pretty normal for this unit.

I also forgot to mention, we would turn the tap all the way to hot to let it heat up, then slowly add cold. It didn't help the issue of inconsistent temp. We also had to run the vanity tap at the same time to keep the most consistence of temp. Have I mentioned how aggravated I am about this?

Excellent replacement for my 30 year old natural gas unit – We had a (I'm guessing coz I bought it secondhand) 30 year old pilot light version which finally died. The heater core had corroded through in an… Read more

awkward spot making it irreparable. Looking for a way out that wouldn't mean having to rebuild the laundry we had this one installed. Quite apprehensive from all the negative feedback on product review. Many of those reviews describe complaints that show they haven't read the manual. We really like the new unit it performs well produces stable temperature hot water. As the unit uses Hydropower to light the burner, ignition time is slightly longer. Plumbing to kitchen and shower is short so loss of water is minimal. We like our unit. With it's digital technology will give you an error code should there be a problem.

Awful – Unit 2 years old. Discovered flame to be expelling out of pilot tube. Cost $600 to find this out and it should be under warranty. Only to find out… Read more

this is a part therefore NOT COVERED past 12 months. I have been told DO NOT LIGHT THIS HOT WATER SERVICE AS IT IS LIKELY TO START A FIRE. (Caps used to stress the importance of the message). Now I have to pay another $600 or so to fix this part. A new unit costs $1800. Total rip off.

As a whining boomer – Who thinks my sh^t doesn't stink. I found this unit to be much worse than the ones we used to hand make out of string and rocks glued together with… Read more

our impudent rage from being talentless imbeciles. No, wait, it works well as described, when installed correctly and AFTER READING THE MANUAL. It's a direct flow hot water system not a 1000litre nuclear powered fission reactor.

Poor units – Coming from a hot water tech. Very poor Chinese made unit. Have 6 systems in block of unit only one is working. They have had multiple services,… Read more

repairs and components replaced but 5/6 have failed.

Don’t buy, install, repair or fix go straight to Rinnai - Japanese made, bullet proof, excellent reliability excellent warranty.

Very unreliable heater – Purchased this privately in “as new” condition as indeed it was, installed it and it ran seemingly great, it wasn’t until a few weeks later that a… Read more

guest in our house said they we’re having a shower and the water went cold 10-15 seconds after they got in the shower. I later tested it and on the first occasion it worked perfectly. I retested and same again, couldn’t make it fault! So I thought there must have been something else wrong. A few weeks later I was running hot water into a sink then noticed it had gone cold! Turned the water off then back on and it worked fine. I decided to research the model and was not surprised to find that this was a common problem with this heater. It now fails on a regular basis, real sorry that I purchased it, I would not recommend this model to anyone