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Quantum Heat Pump Hot Water in Melbourne CBD, VIC

AustraliaClimate Zone 6

Looking at a Quantum heat pump for your Melbourne CBD home? Installed pricing for Quantum in VIC ranges from $3,250 - $4,450 before rebates, with an estimated $1,920 - $3,750 after all available Victoria rebates and federal STCs are applied. small households needing a 150L or 200L tank, and anyone outside Victoria who wants a long-established Australian brand.

Quantum is priced below the local average of $4,100 - $6,400, making it one of the most affordable options for households in this area. Combined with available rebates, out-of-pocket costs can be very competitive.

Heat pumps work well in this climate zone but will see some efficiency reduction during cold winter mornings (below 5C). Split system models with CO2 refrigerant (Sanden, Reclaim) maintain better performance in cold conditions than integrated R134a models.

$3,250 - $4,450
Before rebates
$1,920 - $3,750
After rebates (est.)
4.3
COP (efficiency)
5yr
Max warranty

PumpSwap installers who service Melbourne CBD

Installers registered with PumpSwap who take heat pump hot water jobs in Melbourne CBD include the businesses below. You do not need to ring around them. Tell us about your system and up to 3 local installers who cover your street send you a quote.

Registered means the business has signed up to quote through PumpSwap and services this area. It is not an endorsement or a licence check, so ask any installer for their licence and insurance details before you book. Not every installer supplies Quantum, so check the brand and model on each quote.

Quantum Models Available

Quantum 150L (150-08AC6-290)

$3,250 - $3,400
installed, before rebates
Capacity
150L
COP
4.3
Running cost
~$275/yr
STC rebate value (zone 4)
~$600
Suitable for
1-2 person household
Noise
50dB
Dimensions
1620x540x540mm
Weight
100kg

Estimated cost in Melbourne CBD after rebates: $1,920 - $2,700

Quantum 200L (200-08AC6-290)

$3,300 - $3,500
installed, before rebates
Capacity
200L
COP
4.3
Running cost
~$275/yr
STC rebate value (zone 4)
~$600
Suitable for
2-3 person household
Noise
50dB
Dimensions
1950x540x540mm
Weight
115kg

Estimated cost in Melbourne CBD after rebates: $1,970 - $2,800

Quantum 270L (270-08AC6-290)

$3,500 - $3,900
installed, before rebates
Capacity
270L
COP
4.53
Running cost
~$261/yr
STC rebate value (zone 4)
~$640
Suitable for
3-5 person household
Noise
48dB
Dimensions
1900x650x650mm
Weight
135kg

Estimated cost in Melbourne CBD after rebates: $2,170 - $3,200

Quantum 340L (340-08AC6-290)

$4,000 - $4,450
installed, before rebates
Capacity
340L
COP
4.53
Running cost
~$261/yr
STC rebate value (zone 4)
~$640
Suitable for
4-6 person household
Noise
48dB
Dimensions
2200x650x650mm
Weight
170kg

Estimated cost in Melbourne CBD after rebates: $2,670 - $3,750

How Quantum Performs in Melbourne CBD's Climate

Very GoodClimate Zone 6 | R290 refrigerant

Quantum's R290 refrigerant is well-suited to climate zone 6. Propane (R290) holds its output in cooler conditions better than R134a does, making Quantum a strong choice for this area. Winter mornings below 5 degrees will reduce efficiency slightly, but the system recovers quickly as temperatures rise.

Noise Levels in a Metro Area

At 50dB, Quantum is on the noisier end of heat pumps. In a metro area, careful placement is essential to avoid neighbour disputes. Check your local council's noise regulations and avoid installing near bedroom windows or boundary fences.

Pros

  • Four tank sizes from 150L to 340L, the widest range here
  • A 150L option, which almost no other brand offers
  • Australian company with a manufacturing facility at Seaford, South Australia
  • Propane (R290) across the range
  • On the register since 2014, so the models have a long track record

Cons

  • Not on the Solar Victoria product list at all, so a Quantum does not qualify for the Victorian hot water rebate
  • Only 2 years on the electrical and refrigeration parts, the shortest here
  • Quantum publishes no labour warranty term
  • The product pages and the 270L data sheet disagree on the minimum operating temperature (-10C against -15C)
  • 50 dB on the 150L and 200L

Available Rebates for Quantum in Melbourne CBD

Federal

Small-scale Technology Certificates (STCs)

Applied as a point-of-sale discount by your installer. Value varies by system type and climate zone.

$500 - $700
estimated value
State

Solar Victoria Hot Water Rebate

Victorian owner-occupiers: 50% of the purchase price up to $1,000, or up to $1,400 for an eligible locally made system. Combined household taxable income under $150,000 (reduced from $210,000 on 1 July 2026), property value under $3 million, replacing a system at least 3 years old, using a Solar Victoria registered installer. Stacks with the VEU discount and federal STCs.

Not claimable on a Quantum: it is not on Solar Victoria's approved product list.

$1,000 - $1,400
estimated value
Certificate

Victorian Energy Upgrades (VEU) Certificates

All Victorian households. A variable point-of-sale discount funded by energy-saving certificates (VEECs), currently up to around $630 depending on the certificate price. Stacks with the Solar Victoria rebate.

$200 - $630
estimated value

Victoria Gas Ban Affects Melbourne CBD

From 1 March 2027, if the gas hot water system in an existing owner-occupied home breaks and cannot be repaired, it must be replaced with an electric alternative; in a rental it must be replaced with a heat pump water heater. Repairs are still allowed and exemptions exist. From 1 January 2027, new homes must be built all-electric.

With 75% of Melbourne CBD homes connected to gas, switching to a Quantum heat pump now locks in current rebate levels and avoids the rush as the deadline approaches.

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All brand costs in Melbourne CBDFull Quantum review

Heat pump guides for Victoria

Quantum in Melbourne CBD - Frequently Asked Questions

How much does a heat pump hot water system cost in Melbourne CBD?
A heat pump hot water system in Melbourne CBD costs between $2,500 and $4,800 fully installed after all available rebates. Before rebates, expect to pay $4,100 to $6,400. The final price depends on the brand, tank size, and complexity of your installation.
What rebates are available for heat pump hot water in Melbourne CBD?
Melbourne CBD residents can access federal Small-scale Technology Certificates (STCs) worth $500-$700 as a point-of-sale discount. Additionally, Victoria offers: Solar Victoria Hot Water Rebate ($1,000-$1,400), Victorian Energy Upgrades (VEU) Certificates ($200-$630). These rebates are typically applied by your installer at the point of sale.
Are heat pumps efficient in Melbourne CBD's climate?
Melbourne CBD has a mild temperate climate with cool winters. Heat pumps work well in this climate zone but will see some efficiency reduction during cold winter mornings (below 5C). Split system models with CO2 refrigerant (Sanden, Reclaim) maintain better performance in cold conditions than integrated R134a models. A typical household of 3-4 people will spend $200-$400 per year running a heat pump, compared to $800-$1,200 for gas or $1,200-$1,800 for electric storage.
How does the Victoria gas ban affect Melbourne CBD?
From 1 March 2027, if the gas hot water system in an existing owner-occupied home breaks and cannot be repaired, it must be replaced with an electric alternative; in a rental it must be replaced with a heat pump water heater. Repairs are still allowed and exemptions exist. From 1 January 2027, new homes must be built all-electric. With 75% of Melbourne CBD homes connected to gas, this affects a significant number of households. The ban takes effect in approximately 5 months. Planning your switch to a heat pump now lets you choose the best system and installer on your timeline.
How long does a heat pump installation take in Melbourne CBD?
A standard heat pump hot water installation in Melbourne CBD takes 3-5 hours for a straightforward replacement. If you're converting from gas, it may take a full day as the installer needs to connect new electrical circuits and potentially modify plumbing. Metro installers typically have availability within 1-2 weeks.
What size heat pump do I need for my Melbourne CBD home?
For Melbourne CBD in climate zone 6: 1-2 people need a 150-170L tank, 3-4 people need a 250-315L tank, and 5+ people should consider a 315-400L tank. In cooler climates like yours, sizing up one tank size is recommended to ensure adequate hot water on cold mornings.
Which heat pump brand is best for Melbourne CBD?
In Melbourne CBD's cooler climate (zone 6), CO2 refrigerant models perform best. Sanden and Reclaim Energy maintain efficiency down to -10C, while R134a models like iStore and Rheem lose efficiency below 5C. If noise is a concern (common in metro areas with close neighbours), split system models (Sanden at 38dB, Reclaim at 37dB, Daikin at 40dB) are significantly quieter than integrated units.
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