Start with your busiest hot-water period, not a fixed people-per-cylinder rule. Capacity does not guarantee a particular number of people or showers: shower flow and length, baths, overlapping use, incoming water temperature and recovery between uses all matter.
Keep a suitable existing setup
180L electric cylinder
$3,600 + GST $4,140 incl. GST
Same-location, like-for-like 180L mains-pressure replacement. Subject to a site visit and confirmation of installation requirements. Includes new valves, electrical reconnection and old-cylinder removal/disposal.
When to consider it
If your existing 180L cylinder generally meets demand and now needs replacement, this may be a straightforward option. If hot water regularly runs out, first assess the fault and usage rather than assuming another 180L will solve it.
What to check
Peak use and time to reheat between showers; access, pressure, connections and available electrical supply. This package does not cover relocation, low-to-mains conversion or a different size.
More stored hot water
300L electric cylinder
$5,450 + GST $6,267.50 incl. GST
Proposed inside or outside installation, including relocation. Subject to a site visit and confirmation of installation requirements. Model suitability and the included installation work are confirmed at the visit.
When to consider it
A larger stored reserve may help with clustered showers or baths when 180L is not enough. More storage does not automatically mean faster recovery; the element, supply and use pattern still matter.
What to check
Room for the larger cylinder, a suitable base and service access, pipe routes and electrical requirements. Our advertised external option is the Rheem MPSS 32530015; not every 300L model is outdoor-suitable, and the calculator does not select a brand. Electrical upgrades or all relocation work are not automatically included.
Change how the water is heated
Panasonic 300L heat pump
$6,699 + GST $7,703.85 incl. GST
Panasonic PHE-30ABR all-in-one. Subject to a site visit and confirmation of installation requirements. Includes the unit, plumbing, electrical work and old-cylinder removal.
When to consider it
For a household considering a different water-heating method, this unit transfers heat from surrounding air into stored water. Compare your daily demand and recovery needs as well as the upfront price; running costs depend on conditions and use, not capacity alone.
What to check
Manufacturer clearances, airflow, drainage, noise near bedrooms or neighbours, electrical supply and access. An enclosed cylinder cupboard is not automatically suitable. A 300L heat pump and a 300L electric cylinder need not recover at the same rate.
Converting from gas adds $300 + GST ($345 incl. GST): total $6,999 + GST ($8,048.85 incl. GST), subject to the same site-visit condition. See the Panasonic package and flyer.
Another heat-pump choice
Haier 330L Monoblock
$7,749 + GST $8,911.35 incl. GST
Subject to a site visit and confirmation of installation requirements.
330L rated storage · R290 refrigerant. Compare this with the 300L Panasonic if additional stored water and app control suit your routine. Check access, airflow, condensate drainage and electrical requirements; cabinet dimensions are not the full installation footprint.
Online price is for an upgrade from known electric or gas hot water, with known current capacity, mains pressure and the same location. Relocation, an existing heat pump or uncertain details need assessment.
Gas conversion adds $300 + GST ($345 incl. GST): total $8,049 + GST ($9,256.35 incl. GST). Full work scope and supply availability confirmed at the visit; no additional work is assumed included.
Model details and Haier flyer ↗
Another heat-pump choice
Rinnai HydraHeat® 340L
$7,749 + GST $8,911.35 incl. GST
Subject to a site visit and confirmation of installation requirements.
340L storage · R290 refrigerant. Primarily designed for outdoor installation. An indoor proposal needs specific assessment, not an assumption that a cupboard is suitable. Check airflow, service clearances, base, drainage, water quality and electrical supply. The removable head belongs to the HydraHeat system, not an arbitrary existing cylinder.
Online price is for an upgrade from known electric or gas hot water, with known current capacity, mains pressure and the same location. Relocation, an existing heat pump or uncertain details need assessment.
Gas conversion adds $300 + GST ($345 incl. GST): total $8,049 + GST ($9,256.35 incl. GST). Full work scope and supply availability confirmed at the visit; no additional work is assumed included.
Model details and Rinnai flyer ↗
Bring your usage pattern to the comparison.
Tell us how many bathrooms are used together, shower duration, baths, when hot water runs out and how soon it is needed again. If safely visible, note your current model, capacity and pressure. We assess recovery and the proposed location before recommending a size or technology.
Online price eligibility: 180L is for an existing 180L mains-pressure electric cylinder in the same location. The 300L electric path requires an existing electric storage system, known capacity, mains pressure and a known inside/outside destination and location choice. Panasonic pricing requires a known electric or gas system and capacity, mains pressure and the same location. Unknown details, existing heat pumps, pressure changes and unsupported configurations go to assessment, not an invented package price.
Check your replacement quote ↗
Choose your details in the existing calculator; this link does not preselect a package. A booking is for a site assessment, not a reserved installation.
