Dux Airoheat

Junk units – ive gone though 2 of these units. the first one failed due to the hot loging contoler getting water into it because of a bad design with a cheap sticker that cracks and allows water to enter. replaced the contoller then the unit had rusted and started leaking water. purchaced another unit and the fan was out of ballance from new. just out of… Read more

warranty and the unit has failed, the fan somtimes works and the unit just keeps going till it over pressures. also trips the curcuit breaker. i wouldnt recomend buying this unit its complete junk.

No problems whatsover.. works great! – The unit came with the 3br house I bought in 2017, and has a manufactured date of 2009.. I've had absolutely no issues with it at all.. I've never run out of hotwater, even when guests are staying.. It's never made any noise either... I'm surprised to read some of the negative reviews, I've not had any negative experience with it at all. Based… Read more ·  2

on my experience, it's 5 stars.

UPDATE Apr 2022: Technician required onsite today to repair the system due to circuit breaker tripping. Turns out the unit had previously been converted from being a Heat Pump to simply being a tank with a regular heating element and thermostat installed (presumably, the heat pump had failed previously). This would explain why it's never made any noise, since there was never any heat pump compressor or fan running on it since I bought the house. Today's issue was resolved by replacing the burnt out thermostat and a new element too.

10 years and going strong – Installed in 2009, hasn't missed a beat. The only negative is the fan on top rust away (l've replaced it once and rust-proofed the 2nd) but l'm right on the beach. Cheap to run and quiet enough that l don't notice it. Must admit l'm surprised as l read the mostly bad reviews after l had it installed........ Edit - l finally replaced it in late 2022, l never replaced the anode and the tank corroded away Show details ·  1

Dux cant supply service – We bought a house in Marysville, Vic. Our hot water grew cold. Called the service number on the unit -- 'for fast and efficient service'. Was given a number to call -- called and was told to my surprise 'I don't touch heat pumps'. Called Dux back, 'We don't have someone in your area find an air conditioning and refrigeration specialist'. Called 3… Read more

of them, no luck. Called 4 plumbers and three electricians. Again, no luck. What are we supposed to do? Very poor service.

Broke after 3 years – Compressor has failed and beyond repair. Eventually DUX came to the party and paid for a new type of heater as a good will gesture I just paid for install. The unit was cheap to run but unreliable  Show details

Need a service agent in Western Australia – No service agent in Western Australia. Our plumber was told to drain and refill unit he wasn't able to check the anode. The unit hasn't been used in 3 years (7 year old unit) . Had it switched of for 5 days before we moved in and had really hot water. Now it's barely luke warm, unable to heat up. Show details

System broke down – System broke down after 2 months, took a technician 2.5 weeks to come out after rescheduling multiple times. Show details

Biggest piece of rubbish ever – control board failed within 6 months but replaced under warranty. The unit has lasted 8 years (which is pretty good compared to what others have experienced) and now rusted out completely. Show details

Thank you to Dux after product Failed – New home was built in 2014, with this system installed. Airoheat pump worked fine until tank sensor stopped working on just over 5 years usage and was unrepairable. We were told a new system was our only option, and quoted around $3800. As the unit had not been used for more than 6months due to us travelling , this was an unacceptable outcome. … Read more

We applied under Duxs fair go policy to replace the unit. Thank you to Dux for providing a new Airoheat Pump and standing by your product. We are very happy with the outcome and would recommend your prompt after sales service. In our experience Dux listened and acted immediately on their customers behalf.

It makes heavy noises like metal hitting each other – My neighbor has the same one installed a few years ago, recently it makes heavy noises day and night, my bedroom window is just next to it. I couldn't sleep when it runs. I don't recommend DUX products. Show details

System needs replacing after 5 years due to design flaw and no help from Dux – This system was installed when our house was built at the beginning of 2014 and up until this point has worked well. The system has currently been in use for about 5 and a half years and unfortunately is now causing brown water to flow from the taps. We had a plumber who was an official Dux repairer have a look at it and were told that the… Read more

discoloured water is in fact caused by sludge in the bottom of the tank, which is produced during normal operation due to some sort of chemical reaction. The problem has evidently been improved on later machines by the inclusion of a dialectric fitting. He knew what the drama was straight away and said it was a common problem with this model and simply due to the design. It is possible to flush the tank but that will not actually remove all of the sludge and will only be a temporary fix. So basically my current 5 and a half year old $3000+ hot water system is now junk and needs to be replaced. I understand that all appliances have a life span and everyone seems to agree that about 10 years is standard for a hot water system, but I would expect that when you purchase a more expensive unit like this, that it would at least last this amount of time. 5.5 years in unacceptable for such an expensive machine. So, I contacted Dux and explained the issue with the unit. As the problem is due to a flawed design and a known and common problem, I asked for some support to get my unit repaired properly or replaced, but was told that as it was just outside of the 5 year warranty, there was nothing they could do. The owner's manual refers to servicing the unit every 5 years, not having to replace it! This poor service is so disappointing from an Australian company. I completely understand that sometimes things go wrong with appliances like this, the difference is how well the company that produce the appliance, handle these situations. It is especially disappointing that Dux will not back their products and do the right thing in replacing this unit as the issue poses a health risk to my family who use the contaminated water that is being produced. It is not simply a problem with the unit not working properly, the water is still being heated, but also an issue of the water being contaminated with god knows what the brown sludge contains. Based on the straight refusal to help rectify the problems with my hot water system, I would recommend not to buy one of these systems.

What an absolute lemon – Just under 2 years old and system died caused by a system defrost which leaked into the main control unit. Complete design fault but yet no warranty. What a joke Show details

Don’t buy – Purchased this heat pump hot water system 2011 with our new home. No hot water under high demand. In 2014 the electronics failed then in 2016 the tank failed after rusting. New system fitted under warranty but had to pay labor. It failed now 6/2019 and now refused warranty even though the tank has 10 year warranty. Not acceptable from an Australian co. I even asked for 1/2 and 1/2 but no. Don’t buy. Show details

This deserves no stars, one is being generous – This product should be removed from the market as it's got to be a safety risk. Our builder installed this heap of junk when we built. If I'd known more about hot water systems I would have done some research and chosen something that wouldn't put my families health at risk. Over a period of a month this pathetic excuse for a hot water system… Read more

has been turning our water orange. Orange water comes from all our house taps after the hot water has run. We then have to clear the system by running cold water for many minutes. Plumbers hate these units, as soon as we contacted a plumber he knew what the problem was and asked if we had a dux heatpump. We contacted several plumbers for second and third opinions... all had the same answer. The unit is 7 years old but seriously turning water orange.?? It would be better if the thing just stopped working instead of polluting our drinking water system. Apparently it's very common for these units to pump their vile waste into the plumbing system. Do yourself a massive favor and stay away from this brand completely. For a unit that costs $3,000 you'd except an amazing unit. Plus they are super super noisy and so not worth investing in. Heap of junk.

Good but designed to be redundant – Hi had a Dux Radiant Heat pump installed in early 2012. The thing is noisier than an old box aircon som is completely inappropriate in high-density areas, like units. I had it put on timer so it turned off at night and turned on in the morning, I was always able to have hotwater in the morning as the insulation is good. The fan unit failed after… Read more

three years and a contractor came out and fixed it but they charged me $200 to replace a part. A year later the thing started leaking and by then 5 year tank warranty had expired. I rang Dux to get someone to fix it, they said to call a local plumber. PRETTY LOUSY that they can't get people to fix their own product even if I was willing to pay. The plumber basically informed me the unit had 'shat itself' and the leakage was rotting the tank. So basically it's redundant as soon as the warranty expires. So much for 'sustainability;!

Have to replace every 5 year! – I have had 4 Dux units since 2005. The common problem was water leaks from the top. Always breaks down just after warrantee has expired a a few months! My third one leaked just after 3 years and was replaced by a new one which started to leak after 4 years. Gave them a call today but they said that it is not covered under warranty cos they included the 3 years from the previous one. So don't buy Dux, they don't last long!!!!!  Show details

Buyer beware! – I first purchased one of these units in 2007. 3 weeks after the 5 year warranty was up, the hot logic box and fan stopped working. Because it was out of warranty, we had to have them replaced as well as the valve, at our cost - very expensive! Within a week of replacing the box and fan we noticed water pouring out of the tank. That was it - the… Read more

whole system needed replacing. I was very upset. I called Dux and was told their new improved systems will last longer. I was furious! After an initial outlay of over $2,000 AND the expensive repairs I would have expected it to last much longer than 5 years! I made a few phone calls, including the Office of Fair Trading. I called Dux back and told them this was unacceptable and I would be taking the matter further. I also told Dux how their own representative had told me on the phone that these systems only last about 5 years. I certainly wasn't told THAT piece of information when I purchased it! A few minutes later I received a phone call from someone higher up at Dux. This person told me that Dux would replace the system at no charge but without a further warranty. I believe this only occurred because I had been in touch with OFT. The system was replaced within days. In 2015 we had to replace the logic box AGAIN. It's now December 2018 and yesterday we had to replace the box and fan. 24 hours later still no hot water. The system needs further repairs which could cost upward of $1,000. In total there has been close on $8,000 spent since 2007. The money saved on power bills does not balance this out. The reason I purchased a heat pump in the first place was to do my part in being "greener" and contributing to saving the planet - something I take very seriously. But does the landfill cost to dispose of these 5 year units outway the fossil fuel cost to the planet? I could get 15 to 20 years out of a simple electric hotwater system I could purchase for around $1,000. We only need one for 2 people. We would dearly love to install a system that doesn't rely on fossil fuel, but as pensioners we can't afford to take another financial risk. It was hard enough on a pension in the first place but we felt good doing our bit for Mother Earth. After 4 days without hot water I'm a little upset! Please, do your research when it comes to these systems, read these forums and feedbacks and make your decision wisely! One good thing that's come out of all this is we've made very good friends with our outstanding plumber!

Nothing but trouble in the beginning and bigger trouble in the end! one dead unit and 5 years old! A – Awesome to start with and then 2 visits from appliance person; finally called plumber to have another brand installed and he said "Stay away from heat pump!" I have another brand which is so far so good after almost 5 years - plumber did not know about that brand which is probably a good indicator. Just waiting for my other dux heat pumps to… Read more

implode at my other rental properties - very bad technology which did not work as planned! Dux should be ashamed of themselves and assisted the people who purchased these units which turned out or (will turn out ) to be DUDS!

After two failures through leaking tanks - never again will we buy a Dux product – Everyone deserves a second chance but when the same thing happens again and the company doesn't back it's product, it is time to take action. I am interested in a class action. I stripped down the replacement unit and it appears to me that the leak has been present for a long time. It did not become apparent externally as Dux have gone to great… Read more

pains to seal around the cylinder which stops the leak showing for months or maybe even years. I am going to get a professional engineer's opinion.

This dux airoheat System is the worst system – The water system came with the house we purchased 18 month ago. It was fine to start of with, then it started leaking water out of the very bottom, the condenser wouldn’t stop working. We had a plumber come and look at it, he cleared the valves and serviced it and said that maybe it could be the extreme humidity we have. It was going ok the water… Read more

leakage stopped somewhat for a month and it started again and I noticed some jelly brown stuff leaking. Trying to ring dux itself didn’t achieve anything, they didn’t want to know about they own hot water system. Again I called a plumber he checked it out and said it, this system is cactus. By now it was just loosing water constantly and would need a new tank, which would cost more than a basic hot water system. I can only say to anyone don’t buy anything from DUX they systems are not good, they after purchase service is the pit and staff is rude. Only today while looking at other reviews and while doing mine I found out this airoheat systems are discontinued which is good as people are just being ripped of by buying one. We feel so very disappointed:(

DUX AIROHEAT.....DISGUSTING QUALITY......BUYER BEWARE – This was installed with our brand new home....CONNECTED TO RAIN WATER.....called in the plumber 5 years 2 months after purchasing....water was leaking at bottom......actually the plumber found the root cause at the top of the tank..... corrosion everywhere....corrosion from leak was months or even years old.....it needs replacing.....NEVER EVER A DUX .....  Show details

Buyer Beware Dux Airoheat Heat Pump Review – Dux Airoheat Heat Pump Review 19/02/2018 This is a review I just added to productreview.com.au for the Dux Airoheat Pump. Buyer beware this could happen to you! Do not waste your money purchasing the Dux Airoheat Pump as I discovered the hard way. In 2008 when I had my house built, QLD government legislation required all new houses to… Read more

have an energy efficiency rating hence the requirement to purchase an energy efficient hot water system i.e. Dux Heat Pump costing $3700. Since installation in November 2008 by a professional plumber and electrician the Dux Airoheat Heat Pump has failed three times with 2 blown heating fans costing over $300 for each repair via electrician installation. The second heating fan was replaced in April 2017 by the Dux authorised service agent who inspected the system. Note I also had the 5-year manufacture service as per the Dux Airoheat Pump manual.

The third major failure occurred on 10th February 2017 during the night with the element seal failing causing a massive water leak inside the metal jacket of the Dux Airoheat Pump as per the emergency plumber’s report. Due to the Dux Airoheat Pump element seal failure this caused water to be forced back up through the electrical conduit that wraps around the bottom of the tanks exterior and through the rear concrete block exterior house wall into the internal wall cavity of my residence causing significant flooding to the lounge, kitchen, laundry, pantry, hall and one bedroom. Suncorp Insurance estimates in excess of $10,000 damage to flooring, walls and cabinets of my residence. Note as the damage to my residence was caused by the Dux Airoheat Pump I cannot claim the cost of the heat pump with this claim or the new electric hot water system I had to install.

The Dux Airoheat Pump was located outside my residence on the rear deck and when the tank ruptured, imploded this caused water to flow under mains water pressure through the external wall of my residence whilst also leaking a brown, jelly like sludge all over the deck.

I cannot and would not recommend the Dux Airoheat pump to potential buyers as this hot water unit never really produced hot, hot water and it took over 30 seconds to become hot upon turning on any hot water tap inside the residence. In relation to energy efficiency savings I have no real comparisons as this is my first hot water system. I did consult several friends who have a standard 250L electric hot water system and their bills were very comparable to the Dux Airoheat pump bills.

As at Feb 2018 I could not find any retail sellers of the Dux Airoheat Pump in Cairns Qld apart from Bunnings which are they are available as a special order only item. No plumber or electrician in Cairns that I consulted recommended the Dux Airoheat pump due to the numerous repair issues and tank failures they have experienced with this hot water system. Buyer beware of the Dux Airoheat Pump hot water system!!!

June 30th 2018 Update: Dux Airoheat Heat Pump Review Buyer Beware

An update to my previous review of the Dux Airoheat pump which had a catastrophic internal tank rupture which flooded the interior of my residence on the 11th March 2018. Repairs totaled over $15,000.

Here is the reply from Dux re their faulty Airoheat heat pump...22nd February 2018.

[Unfortunately I must advise you that you have been unsuccessful in your claim for compensation. Purchase of a Dux water heater assumes an understanding and acceptance of the manufacturer’s terms of warranty, which accompany the unit. Your hot water system came with a 5 year warranty which expired fully in 2013. The terms of warranty state that: - Dux’s obligations under this warranty and replacement guarantee are limited to repairing or replacing the hot water unit or components. To the extent permitted by law, Dux will not be liable for any loss or damage to furniture, carpets, walls, foundations or any other consequential loss of any kind caused by a defect in the hot water unit or any component. You may have mutual rights to claim under relevant insurance policies. This decision has been based on the facts tendered by you. If any new details can be brought to our attention, please contact this office to further discuss your case.]

Dux Hot Water PO Box 5108 [details removed]

I purchased an electric Hot water system (EVERHOT) which has saved $65 off my first electricity bill since the Dux Airoheat pump ruptured. The new stainless steel electric hot water system is whisper quiet compared to the noisy Dux Airoheat pump and significantly smaller in size. Hot water out of the taps becomes hotter far quicker than the Dux Airoheat pump ever did (great water saving). I do not recommend purchasing the Dux Airoheat pump buyer beware!!!

Garbage product - short life span – I agree with anyone else who considers buying this rubbish. I can't imagine how Dux can pass off any of their systems as being good. They are not worth a single dollar. We had ours just over 5 years. In that time these are the problems. Water not as hot as you would expect. At year 4 thermostat breaks down. Rang and told sorry out of warranty.… Read more

Cost arm and leg to fix. Just on year 5 main hot water tank splits. Seriously after just 5 years and how in heck does something wrapped and protected split. Cost to replace $3.6k. No way we are proceeding with that. Dux don't give a hoot and offer no assistance. Do not buy a dux aeroheat system of any type. You may save on power but you will loose on short term costly break downs and poor quality, lack of support from Dux who don't want to know you when something goes wrong. If you want a short term hot water system that costs you the world then go ahead. Your money would be better spent on something better. JUST DON'T DO IT. SAVE YOURSELF THE HASSLES cost and those nights or having cold showers.

DO NOT BUY A DUX !!!!! – New house. Runs RAIN WATER. A piece of [Word Removed]. Failed after 2.5 years of install. We'd been using it for two years. Energy bills were huge, constantly running and in South Australia that is a big stress. We got to the point of turning off the system and using the water until we needed to heat it up again to save on bills. Beware if your… Read more

building a new home and they specify a Dux, ask for an upgrade and install your own. Not worth the ongoing cost or replacement in two years...even if it is a cheaper initial outlay.

We'll never buy a Dux and wouldn't recommend to anyone else.

Terrible – - Sold as a premium product alternative - Spurred on by the potential energy and $$ savings from switching from an all electric system The Dux didn't improve $$ savings all that much though was good for government rebates. Our household was a 3 person household with regular domestic use and our unit died in just under 7 years. The number of… Read more

negative reviews shows Dux engineers its products to fail and is an indication of their engineering standards of Dux products.

Far from innovative, probably overpriced. Our family will exhaust all alternatives before returning to Dux.

Jelly – There are 2 aluminum annodes in the Airoheats that offer good protection to the tank, but I suggest the tanks be flushed through the element port every 3-4 years depending on water quality. I work on these regularly and have seen some pretty scary looking jelly / toothpaste like stuff come out when flushing. Unfortunately its nearly impossible to… Read more

replace the annodes, and thats most likely why they installed 2. These days when the Hot logic or fan dies (usually due to exposure to weather), we simply install a regular thermostat and 2.4kw element at a cost of around $200. Sure your power bill will increase slightly, but you will have a very reliable HWS. The tanks I found to be good quality with only 1 having sprung a leak in 8 years. For the money (after rebates that were offered at the time) I think they were ok.

Jelly like Substance in the Tank – Our Dux Areoheat started leaking from the base of the tank last week-end.(7 years old). Our plumber replaced it with a new system yesterday.When draining the tank we found it was full of a jelly like substance.Does anyone know what this substance is and if it harmful.I have kept some of the substance for testing. Dux seem to be ducking for cover when others have had the same problem.  Show details

Do not buy! – First unit installed in 2009, broke down during the Christmas holidays barely 8 months old. Compressor would not start hence no heat and PTR valve would leak constantly (I measured it at about 2 liters an hour). Dux sent a plumber within 48 hours (good service) who installed a conventional heating element but didn't address the leaking PTR valve… Read more

spilling close to 50 liters of hot water in to the backyard every day on peak tariff (bad service).

Over a period of three weeks it took 21 phone calls (worse service) all the way up to the NSW state manager (thanks for listening [name removed]) to have their area service manager ascertain what I said in the first phone call weeks prior: "The compressor is not running, the unit is faulty and needs to be replaced" (I explained the issue during my first phone call to the DUX Service Desk [name removed] but obviously an IT person cannot be trusted to troubleshoot a heat pump).

The unit was eventually replaced with a new one which worked fine for about four years. Hot logic was then replaced at great expense and the unit worked until September 2016 when a large amount of boiling water and steam spilled from the PTR valve.

Turning the unit off at the fuse box until all hot water was used (good thing tempering valves are mandatory nowadays) and back on when it was cool showed the over temperature thermostat has tripped (way too late) as the unit had no power.

I replaced the thermostat as it hadn't tripped or turned off the system before the temperature got so high that it triggered a substantial release of very hot water through the PTR valve.

The system worked fine for a few months after. It then started playing up again and not turn the compressor off even though only the green led is on and the fan is off. This causes the coil to freeze solid, but not before making the water in the tank very hot again. Presumably the relay on the hot logic circuit board switching the compressor on and off gets stuck in the on position (I kept the old faulty hot logic to satisfy my curiosity on the inner workings). Turning the unit off until it had cooled enough to trigger a heating cycle used to fix the issue for a few weeks. Unfortunately the reboot trick no longer works and the compressor will not turn off at all now at the end of the heating cycle.

I am now considering to either replace the relays on the hot logic board or just give up and to replace the system with a single element off peak storage heater so I can expect a trouble free service life of 10+ years again and relegate the Airoheat to scrap metal.

In summary when the unit works it's great, but it seems to have many flaws that are all very difficult and/or expensive to fix. I can also see no evidence of energy saving, most likely as both units performed sub-optimal because of their inherent faults and design flaws.