Quantum Compact Domestic
59 reviews
Finally honest and upfront advice – Amazing service from the team at Quantum , they helped me choose the right unit and an installer. Runs beautifully and can see the savings after only 3 months. Thanks team, would happily recommend to friends and family. Show details
unreliable, expensive – Compressor failed at 3 years, new compressor failed in another 18 months. so in less than 5 years i need a new expensive heatpump. Also in that time a new valve. None under warranty. Buy anything else! Show details
Stay way from these pump heaters - rubbish – Quantum has put me off pump heaters altogether. What I would have saved in power I spent double by replacing the compressor which failed just outside the warranty period. Guess what the new compressor also failed 3 years later - rubbish product! Show details
Reviews with attachments
Absolute rubbish – We bought this unit to replace an existing one that came with the house. (Regrettably). Leaking around all seals re water inlets / outlets and also out of where electricity is connected to the unit. Unit is 5 years old and we paid $3,000 for this rubbish. 4 months out of warranty, no claim would be considered. Service department useless. Blamed us… Read more
for the issue though we don’t understand what they were on about. Couldn’t get information we wanted to see if it was worth fixing without first agreeing to a service agreement. Not willing to even estimate a service call out price without us agreeing to their agreement. Also, they use private contractors so they couldn’t give a price anyway. When we contacted the plumbing company who installed this unit they told us this company had stopped making units in Australia and they were being made in China and that the quality had taken a big nose dive, they were good once but not anymore. Also that when contacting the service department some people find they were not returning calls but that wasn’t the case for us. The installation company don’t install this unit anymore. The quality must create reputational damage for all parties one expects. Many people are in a similar position to us where the unit didn’t last long it appears via other reviews. Stay clear of this dodgy unit and company. We rang a company that services them via an internet search, they stated the unit was finished when told where its was leaking and simply hung up without us being able to ask further questions. Bring on the good old stock standard Rheem, which we should have bought in the first place and which should last at least twice as long.
5.5 years of ownership and now has to be thrown away due to leaking tank. - 6 months out of warranty. $3500 new, now $0 – 5.5 years of ownership. Found it quite noisy at first but got used to it. At 2 year mark the compressor stopped working - fixed under warranty after much complaining from Quantum. Now 6 months out of warranty on tank and its now leaking hot water. Charged $132 for inspection and told its a throw away from Quantum plumber. I performed recommended… Read more
maintenance of tank (anode and prt valve) as recommended by Quantum HQ. Waste of my time. So much for doing right by the environment with lower power unit. What is the climate impact of a system with no life cycle after warranty? Honestly look elsewhere.
Positive reviews
Excellent hot water service – Bought in 2008 and has given hot water in our cold climate with no need for boosters that other makes (Rheem) need. It runs, quietiy, for about 4 hours mid winter. It needed one service call to replace the starter capacitor for just over $100. It's a pity our new house has Rjeem which is noisy and runs nearly all night. Show details
no longer convinced – Still have 20 years later, I researched these and was more than happy to buy.. it worked for about 3 years and then started to fail.. they came credit to them and replaced it as it was inside warranty. Show details · 1
Good enough for 11 years – We are now shopping around to replace our Quantum Unit after 11 years. It has been efficient, but noisy. The fan now needs to be 'kick started'. We will probably change brands as Quantum want $800.00 to replace the old one. We have never run out of cold water. It takes about 6 hours to complete a heat cycle from a cold start after a holiday.
Negative reviews
Waste of money!! – Wish we read these reviews before my mum changed her hot water system to Quantum. Purchase July 2019 , same story as everyone else , heat compressor died. Called the company, the most appalling and rude customer service I’ve ever come across, she actually said to me” what do you want me to say to you?” My mum lives alone in a unit, only showers… Read more
once a day, washes clothes in cold water, no dishwasher and this pump packs it in after 3.5 yrs. Terrible company and products.
DO NOT BUY ONE ! – Utter rubbish , dont last ! Adelaide customer service centre are appalling , i can not say one good thing about this product ! UPDATE. Systems vessel started leaking !!!! Credit where credits due the Adelaide based service centre organised a new replacement unit and this was installed promptly by [Name Removed], this time round the service was so much better than two years ago ! Show details
VERY poor warranty and compressor – I purchased a 3 year old house that had this unit installed from new. 1 year later the unit failed to provide hot water. Called Quantum, they gave me a number of someone to call to come out and inspect. If under warranty, free otherwise a call out fee. 5 year warranty so figured all good at only 4 years. Tech came out next day who was great,… Read more
quickly diagnosed it was the compressor that has failed. Compressor and all electricals only 2 year warranty, so had to pay for service call. Called Quatum - same answer. Tech quoted to replace compressor and regas was $1200 - warranty on new compressor only 1 year! Yes unit is very efficient for electricty use, but you are certainly not saving much money in the long run with a very poor warranty and poor components needing replacement well short of what they should last if you think airconditioners (5-7 years) and old school water storage heater tanks (10-12 years). Replaced with an "old style" water storage heater, knowing that it should be fine for 10 years plus of hot water.
Recent reviews
Worst thing I have ever paid for – Less than 4 years old, failed and no support from the company. The issue is with the compressor. I have no idea why this product is so bad. Show details
WaARNING Never BUY!! this product – My System was installed back in 2019. I was told that being Quantum is a good brand but little that I know theres a hidden red flag about it. It was installed not even a year old and the compressor start failing. I called the service warranty and took 4 weeks to send someone to fix the unit. Imagine having no HOT water for 4 weeks in the middle of… Read more
winter, NOT GOOD!!. Then after less than 2 years of replacing the compressor, it happened again today in 2022 in the middle of WINTER. I think this quantum doesn't like getting cold and decided to go on sleep forever!. As for the warranty, obviously i rang and they said it is no longer covered, like i can imagine that after spending 4k for this unit and only lasted less done 3 years so there goes my money down the drain!. In my opinio this company should have done better warranty on their product since they are aware of issues about their product. I WILL DEFINITELY NOT RECOMMEND THIS TO EVERYONE!!!
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Don't buy one! – Unit does not produce hot water anymore and company would not send a service agent in Perth. Worse customer service ever experienced. Extremely hard to find a technician who would have a look at the unit as most professionals that I rang said they would not touch them anymore because they have too many problems.
It's a tie – Have read all other reviews for this product, it was installed 2013 (before we moved in), it is very noisy for sure, it produces enough hot water for 2 of us (and we are in a cool climate but rarely below 5c overnight), the outer cylinder frame is looking in quite poor condition, we still get sufficient hot water for our needs. Think it only has a couple of years life left in it.. Show details
Extremely Disappointing – Installed by builder Born Feb 2016 - RIP Feb 2022. $3500 2016 $0 2022. Best to stay away from fads that promise the world and deliver a questionable product. Stay Away from this COMPANY!! Show details
Compressor died after 4 years – Had a Quantum Heat Pump installed in our new home in South West WA after having a great experience with this product in our previous home for 8 years (still going strong when the home was sold). However, compressor on new unit died over the New Year and with no stock in WA, a new unit would have had to be ordered from Sydney with an approximate… Read more
lead time of 3/4 weeks. Obviously we could not wait so long for a replacement so managed to find a great secondhand unit of a Japanese make and a tradie willing to come 100 kms to fit it for us the same day. Took 4 hours to fit and the tradie had to drive back home at 9pm as he had a heavy workload the next day. A really dedicated person who values his customers. I have since spoken to Quantum Customer Service who were less than than helpful and not really bothered that they are using poor quality parts which mean that I would be unable to recommend this heat pump to anyone in the future if it is likely to fail in such a short time. My advice would be to read the reviews and buy a better quality brand.
No back-up and NO customer care – I have 2 x 2018 model hot water heaters. They have both been repaired and regassed twice and are both DEAD now. Barely 3 years old. QUANTUM said “well they’re not rocket ships ofcourse they wont last forever”. $7000 later not what I’d call a saving. Maybe i saved power but not money. DON’T BUY ONE Show details
Rubbish – Warning ! Do not buy this brand ! New home install when we bought it 2 years ago . Warranty is worthless and other reviews on this page sum it up ! Stick to Australian Brands that you can trust and rely on .House full of Xmas guests and no hot water . Was warned that this would happen by a plumber friend when he spotted it . Show details
Absolute piece of crap. Broke just after warranty expired, fixed it and it broke again 6 months later. Pure rubbish – Rubbish product, expensive to purchase and fix, with only one authorised repair person around. They are now an Obsolete products due to being an inferior product. Sorry I have nothing good to say. Show details
Dead after 6 years!! – Paid $3800 in 2015, pressure relief valve went after 12 months. Today 16 months after warranty ran out it is completely dead due to tank rusted out. Waste of time and money!! Surely consumers shouldn't have to replace HWS every 6 years. Company representative rude and flippant. Show details
Not Recommended – We purchased this HWS in 2015 for sever thousand dollars. Everything was fine until the compressor went out of warranty and broke down during Covid. We are in rural WA so were without hot water for several weeks while the parts came on a slow journey from the eastern states. The compressor was eventually replaced and all seemed well until I… Read more
noticed the water was discoloured. I had the water checked by the water corporation, all good to the property so the problem was internal. More checking was required when an unusual skin rash appeared and then I found it was only the hot water. Had the hot water tested at the government Chem laboratory at more expense to me. The results found a high level of rust in the water. I contacted Quantum Energy customer service only to be informed the tank was now out of warranty, 6 years after installation and bad luck nothing can be done. How are these companies allowed to get away with warranties that obviously run out before the problems start, especially on expensive machines. Where is the consumer watchdog?
Find out how Quantum Compact Domestic compares to other Electric Hot Water Storage Systems
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Don’t buy. It’s a piece of rubbish – Don’t buy this system. It’s so crap and it’s not economical at all. Also, organising a service is impossible especially if you don live in QLD. Please stay away from this piece of rubbish.
Poor Reliability Expensive – New Quantum heat pump hot water system installed to our newly build house in NSW. It was supposed to be a “great system”. The system was installed in early 2016. In May 2020 the valve started leaking. The warranty is only for 4 year so we are out of the warranty period. We have had a plumber look at it and recommended that the unit be… Read more
replaced because it is not possible to replace the valve due to the way the tank is built. We have been told to stay away from this product, very costly and even more trouble to fix. Think twice before buying this brand or product.
Eye Watering Maintenance Costs - Disappointing – Purchased 2 May 18. Have zealously tried to maintain it since then. Required $1,207.80 worth of maintenance on 8 May 20. Problems getting hot water and problems with low pressure, fluctuations in pressure and some damage to plumbing fittings on 6 May 20 and water running uncontrollably until 7 May 20. We have yet to pay for those repairs as well.… Read more
Unfortunately doesn't live up to hype, expectations and costs associated with this unit. Feeling misled. Probably should have looked up this site before buying. Reminds me - It's Mothers Day this weekend. Am a bit concerned about a larger Quantum Model I previously bought for my mother's house.
Dreadful Customer Service – This is our second unit & the first one lasted over 10 year this one hasn't made 18 months! We have been without hot water for 5 days & were told by customer service that the repairman would call to arrange a service call but guess what NO CALL! several calls texts & emails to customer service but no answers. I'm sure they are waiting till we give… Read more
up & go to a local hot water service provider so they don't have to provide the repair under warranty. All we want is to know when they will come so we can be home, make ongoing alternate showering arrangements & get on with basic living.
terrible and unfriendly customer service and making noise like a monster – 1) terrible and unfriendly customer service 2) quantum machine makes noise very loud, same size machine, the next door unit is just quieter than mine. 3) they sent a technician to check, only stay for very short time and let the water out, and the technician checked the neighbour's machine (same size), even the technician said to me and the… Read more
neighbour, mine is louder than my neighbour's. and I asked the technician if he can live somewhere like this, he said not really. The technician even didn't check the internal of the machine at all. But he said to me he works for Quantum, so he can't tell the company the truth, only say the machine is good because it's still running no matter how loud the noise is. 4) quantum said the machine is too close the wall, so I myself ask a different plumber to move it away from the wall, and rotate the fans to the open air, because these were the company replied to me... but after being changed, the noise still there; I use the decibel app to test in my room, it's louder than what their website claimed 47dB. 4) been trying to solve the problem for months, but still not solved, quantum just doesn't want to help further to check the internal at all, they refused to help at all, just talking to you over the phone and wasting time. they can't help to replace it and they are not going to send any other technician to check it again. and you have to pay the technician call out fee under warranty. 5) the first technician charged me 0 because he sympathised me with my terrible situation. That means he knows my machine makes much louder noise, but he can't do anything about it. 47dB they claimed, but what about 46dB? is it under that 47dB, it's much louder than the same size machine as my neighbour's.
Frustrating situation, seems like they only have 1 woman working there, she just couldn't help anything at all, I wanted to talk to her boss, she said I am the person who is in charge of this situation:-( there is no other way to talk to anyone else.
Even you go to hospital to diagnose, you would like to get second option. But she doesn't, her company doesn't allow us to do so.
What a bad service and worse company Quantum are! Someone above knows this situation. As a normal customer, we can't do anything about it, but one day they will know.
I hope when you buy any products from them, please consider the problem after installed.
Note: the technician is hired by random person, who knows he is the professional and registered plumber or not?
It won't be fixed at all.
Unit 33, 11 ACT
Never ever Quantum again – Certainly I am very disappointed in Quantum as a company. We have several cylinders of which 1 has had to be replaced as it sprung a leak. Another has has a major repair done which Quantum refuse to acknowledge so I am left with the cost. Dealing with Quantum would rate as a "very bad experience" it takes heaps od emails and heaps of phone calls to get to any conclusion. Would never ever purchase anything made by Quantum ever again. Show details
not a sustainable item – These, in theory, sound like a great alternative to reduce electricity costs. When you consider the exceptionally short life (8 years) and the annual costs of maintenance these water heaters are a very expensive system. Steer clear, the quality is not there and it was next to impossible to get after sales service Show details
3 Units Installed All Failed with Leaking Tanks – Purchased 3 Heat Pumps and they worked efficiently. 2 of the units started leaking water from the tank and were replaced. Unfortunately the replacements did the same thing with the water tanks failing and leaking. The 3rd tank did the same and now quantum are refusing to fix the problem and I am off to the Consumer Tribunal to seek redress. I… Read more
would not purchase a quantum product again as there are doubts to the water pumps durability and longevity. To have all 5 units suffer the same issue does not say much for the product
Technology at its worst – Purchased the Quantum Energy 340L heat pump in November 2009. Assured of its quality design and green house gas saving technology. After 2 years the inadequate electrical connections which were not weather proof failed and cost $350 to fix. Now after the 5 year warranty has expired the unit has begun to disintegrate due to electrolysis. It was an… Read more
expensive purchase at $2750 installed and has proven to be very poor quality in terms of value for money and longevity. I would not recommend Quantum Energy products. You cannot contact them on the phone and the units cannot be fixed. Do not buy from them.
Disappointed – We have had our Quantum Heatpump for 5 and a half years. Warranty was only 2 years. At 3 years had to have the control panel replaced at a price of $580. Two and half years later, the control panel has needed replacing again. To say we are disappointed is an understatement. Would not purchase another nor would I recommend a Quantum Heatpump.
8 years old and leaking from the top – We have a Quantum 315l cylinder, it's only 8 years old and it has rust all over the steel tank. It's leaking from the top and you can push your finger through the steel tank up on top. It's now the second one to go in 4 weeks. It's for a Hotel, customers are always complaining about the noise.
Hot H20 from the air – We have a quantum water heater that is 9 years old.Had a new capacitor replaced 3 years ago.PLEASE NOTE-the water anode should (ideally) be replaced every 4-5 years.These anodes start off being about the thickness of a thumb and may end up about the thickness of a match!We run ours on a day tariff as the air is GENERALLY warmer than at… Read more
midnight(the supposedly cheaper tariff time?).The price u pay usually dictates the savings. Also i see some reviews that say that their heater is in the shade!!- it doesnt matter-its all to do with the temp of the air!
Excellent – We installed our unit 10-12 years ago. Have never had any problems with it. It is under a veranda on the east side at Gawler
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Yes it has gone now too noisy - too rusty on the top - served its time I think.