On our second one. First on was replaced under warranty after 12 months.
Second one started rusting of the condenser drain tank after 12 months. Now completely rusted out.
Condensor just floats in the breeze now.
Quantum service blamed me for not cleaning the drain hose. Said it is written in the manual.
Nothing in there anywhere.
Will now have to replace the entire unit.
NOT with a Quantum.
DO NOT WASTE YOUR MONEY.

We thought we bought the best and biggest unit in 2016 for just under 3k. It turned to be the worst ever. It rusted in less than a year and kept leaking from all corners. When you ring the company, they ask you to ring the installer. When you ring the installer, he asked for service fee before even looking at the unit. No warranties offered to cover for the cold water or the poor quality of this leaking rusty unit. Hired a plumber to change the release valve, still no hot water. My kids constantly suffered from cold showers in winter for FOUR years, until it died. Quantum is the biggest scam. Beware save your money, time and energy.

I bought mine about 10years ago second hand 15 years old in total
Only ever stopped once and it was only a capacitor been a very good buy
Looks like the older ones are better
They must have move manufacturing to China

1 year old and it is a boat anchor.
The customer service from these people is appalling. The attitude is to blame the installer, the circuit breaker, the process of contacting them and even Telstra!
The product is noisy and intrusive in the summer months when unit cuts in and out throughout the night. we have to close off the windows on the side of the house that the heater is located to shut out the noise.

Installed mid 2016. Started infernal noise late 2018. Out of warranty after 2 years. $120 for technician to tell me it will cost $1100 to replace the compressor which comes with a maximum 1 year warranty

Heat pump was the another dodgy choice made by the builder.

I'm having this piece of scrap metal removed today and replaced with something realiable and hence truly energy efficient in the long run.

I can't believe installation of such a piece of rubbish counts towards basix points. What a dumb box ticking exercise.

Sold to us as being a quality product 3.5 years after being installed compressor is dead $1100.00 to replace go with a quality brand quantum is not quality at all

Just over 7 and a half years old. Came highly recommended by an energy advising company. Would last between ten and twenty. A heath pump hot water system apparently is still a economically great system, but our Quantum system has completely rusted through, leaking everywhere. Was sold as a top brand. Do yourself a big favour, buy a different brand!

I installed my current heat pump in November 2006 and have had relatively no trouble until I tried to order a top lid, which has badly rusted. After my initial ring to head office in Sydney, I was told the part was available and to just ring and order, simple really(really????).
I rang two days running and left the requested voice mail message with my query to order and the requested call back details - still waiting to be called back.
Subsequent to this I emailed the General Mangers P A and, guess what, still no response after approx. 3 weeks.
Would I recommend their after sales service, hardly.

Thought we would save money with the energy efficient model, it lasted 6 years and the tank burst, the initial cost was approx $4000, so what we saved in power we just lost in having to purchase another hot water heater, but certainly not another Quantum very poor product life.