Best Heat Pump Hot Water Systems in Australia: What to Compare Before You Buy

A heat pump hot water system can be a strong option for Australian homes looking for an efficient electric hot water upgrade. Instead of using a standard electric element as the main heat source, a heat pump uses electricity to move heat from the surrounding air into water stored in a tank.

The best heat pump hot water system for your home depends on household size, tank capacity, outdoor location, airflow, condensate drainage, electrical suitability, noise placement and whether the system will suit your daily hot water use.

Installed Today helps customers compare heat pump hot water systems, including medium heat pump hot water systems from 200L to 280L, large heat pump hot water systems over 280L and Wi-Fi enabled heat pump hot water systems.

Supply-only ordering is available across major Australian metro areas, with selected supplied-and-installed options available on eligible products in Brisbane and Gold Coast service areas where shown.

Quick Answer

The best heat pump hot water system is the one that suits your household demand and installation location.

For most homes, compare:

• Tank size

• Household hot water use

• Number of bathrooms

• Recovery time

• Outdoor space

• Airflow clearance

• Condensate drainage

• Electrical requirements

• Operating noise

• Warranty terms

• Controls and timer settings

• Solar PV compatibility where relevant

• Installation access

• Supply-only vs supplied-and-installed availability

Heat pumps are not automatically the best choice for every property. They work best when the location has clear airflow, practical drainage, suitable electrical supply and enough space for installation and future servicing.

What Is a Heat Pump Hot Water System?

A heat pump hot water system is a storage hot water system that uses a refrigeration-style process to move heat from the surrounding air into the water tank.

Instead of directly creating heat like a standard electric storage system, a heat pump extracts heat from the air and transfers it into the water. This can make it a more efficient electric hot water option in suitable conditions.

Most domestic heat pump hot water systems include:

• A storage tank

• Compressor

• Fan

• Evaporator

• Heat exchanger

• Controller

• Condensate drain

• Electrical connection

• Plumbing connections

• Backup or boost heating, depending on model

Heat pumps still use electricity, but they can use it differently from a traditional electric storage system.

Why Choose a Heat Pump Hot Water System?

A heat pump may suit homes wanting an efficient electric hot water system without relying on gas.

A heat pump hot water system may be worth considering if:

• You are replacing an old electric storage system

• The home does not have natural gas or LPG

• You want to reduce reliance on gas

• Outdoor installation space is available

• The location has clear airflow

• Condensate drainage can be managed

• Electrical supply is suitable

• Noise placement is practical

• Tank size suits household demand

• Solar PV timing may suit household usage

Heat pumps can be a practical option for many Brisbane and Gold Coast homes, but suitability still depends on the property.

Heat Pump Hot Water vs Electric Storage

A standard electric storage system heats water in a tank using an electric element. It can be simple, familiar and practical for like-for-like replacement.

A heat pump also stores hot water in a tank, but uses heat from the surrounding air as part of the heating process.

Electric Storage May Suit:

• Simple like-for-like replacements

• Homes with limited outdoor airflow

• Locations where heat pump noise placement is difficult

• Customers wanting a familiar storage tank system

• Properties where a heat pump location is not practical

Customers comparing electric options can browse electric hot water systems, including 250L electric hot water systems, 315L electric hot water systems and 400L electric hot water systems.

Heat Pump May Suit:

• Homes wanting an efficient electric option

• Properties with outdoor space

• Locations with clear airflow

• Homes where condensate drainage can be managed

• Customers replacing an older electric storage unit

• Homes with solar PV where timer operation suits usage

The right choice depends on the home, not just the product label.

Best Heat Pump Hot Water Systems to Compare

There is no single best heat pump hot water system for every Australian home. The best option depends on household size, climate, installation space, budget, noise placement and product availability.

Below are heat pump options customers may compare through Installed Today.

iStore 270L Heat Pump Hot Water System

The iStore 270L Heat Pump Hot Water System is a popular option for households comparing medium-sized heat pump hot water systems.

It may suit:

• Medium households

• Homes replacing older electric storage systems

• Properties with suitable outdoor space

• Households with solar PV where timer operation suits usage

• Customers wanting a heat pump around the 270L size range

Before ordering, check airflow, condensate drainage, electrical suitability, access and noise placement.

Rheem AmbiHeat 270L Heat Pump Hot Water System

The Rheem AmbiHeat 270L Heat Pump Hot Water System may suit customers wanting a heat pump option from a well-known hot water brand.

It may suit:

• Homes comparing Rheem heat pump systems

• Medium household hot water demand

• Customers moving from older electric storage

• Outdoor installations with suitable airflow

• Homes where drainage and access are practical

Rheem heat pump suitability should be checked against the installation location, household usage and electrical requirements.

Rinnai Enviroflo V2 250L Heat Pump Hot Water System

The Rinnai Enviroflo V2 250L Heat Pump Hot Water System may suit customers comparing a 250L heat pump option.

It may suit:

• Small to medium households

• Homes with suitable outdoor space

• Customers wanting a Rinnai heat pump option

• Properties replacing a similar electric storage capacity

• Locations where airflow and condensate drainage are suitable

A 250L system may not suit every family, especially where long showers, baths or simultaneous hot water use are common.

Rinnai Enviroflo GR-Series 280L Heat Pump Hot Water System

The Rinnai Enviroflo GR-Series 280L Heat Pump Hot Water System may suit households comparing a slightly larger heat pump tank.

It may suit:

• Medium to larger households

• Homes with higher daily hot water use

• Properties where outdoor space is suitable

• Customers comparing larger Rinnai heat pump models

• Homes where airflow, drainage and noise placement have been checked

Tank size should be selected based on real hot water demand, not just the number of people in the home.

Rinnai Enviroflo GR-Series 300L Heat Pump Hot Water System

The Rinnai Enviroflo GR-Series 300L Heat Pump Hot Water System may suit larger households comparing higher-capacity heat pump systems.

It may suit:

• Larger families

• Homes with multiple bathrooms

• Households with higher hot water demand

• Properties where outdoor installation requirements are suitable

• Customers comparing large heat pump options

Larger tanks need suitable space, access and drainage. They should not be chosen without checking household usage and installation requirements.

Enviroheat 250L Heat Pump Hot Water System

The Enviroheat 250L Heat Pump Hot Water System may suit customers comparing a 250L heat pump option for everyday household use.

It may suit:

• Small to medium households

• Homes replacing older electric storage

• Properties with suitable outdoor airflow

• Customers comparing value-focused heat pump options

• Locations where condensate drainage can be managed

As with any heat pump, check noise placement, access and electrical suitability before ordering.

Heat Pump Size Guide

Heat pump sizing depends on household demand, not just the tank label.

Consider:

• Number of people in the home

• Number of bathrooms

• Shower length and frequency

• Whether showers run at the same time

• Bath use

• Kitchen and laundry use

• Existing system size

• Whether the old system ran out of hot water

• Recovery time

• Timer settings

• Solar PV timing

• Peak usage times

As a general guide:

• Around 250L may suit some small to medium households

• Around 270L to 280L may suit many medium households

• Around 300L and above may suit larger households or higher demand

These are general comparisons only. A household with two people and long showers may use more hot water than a larger household with shorter showers.

Medium vs Large Heat Pump Hot Water Systems

Installed Today separates heat pump systems into useful comparison groups.

Medium heat pump hot water systems from 200L to 280L may suit many standard household replacements where demand is moderate.

Large heat pump hot water systems over 280L may suit households with more bathrooms, more occupants or heavier daily hot water use.

A larger tank can provide more stored hot water, but it also needs more space and may cost more upfront. The right size should balance comfort, efficiency, budget and installation suitability.

Heat Pumps and Solar PV

A heat pump hot water system can be worth considering in homes with solar PV, but the setup needs to suit the household’s usage pattern.

Solar PV pairing may work well where:

• The heat pump can run during daytime solar generation

• Timer settings suit the household

• The system has enough storage for evening use

• The home’s electrical setup is suitable

• The installer confirms the configuration

Solar PV does not automatically make every heat pump the best choice. The household still needs the right tank size, recovery time and usage pattern.

Customers interested in control features may also compare Wi-Fi enabled heat pump hot water systems, where suitable.

Heat Pump Noise Placement

Heat pumps have fans and compressors, so noise placement matters.

Before ordering, consider whether the unit will be near:

• Bedrooms

• Neighbouring bedrooms

• Living areas

• Boundary fences

• Narrow side paths

• Courtyards

• Townhouse walls

• Units or shared spaces

A location that looks convenient may not be suitable if it creates noise issues. Always check the product details and confirm placement with a licensed installer.

Heat Pump Airflow Requirements

Heat pumps need access to surrounding air to operate properly.

Poor airflow can affect performance, recovery and efficiency.

Avoid locations that are:

• Fully enclosed

• Too close to walls

• Inside tight cupboards

• Under low covers without clearance

• Blocked by stored items

• Too close to fences without adequate spacing

• Poorly ventilated

Outdoor location and clearance requirements should be checked against the manufacturer’s instructions.

Condensate Drainage

Heat pumps produce condensate as part of operation. This water needs to drain safely and legally.

Before ordering, check:

• Where condensate will drain

• Whether the location has suitable drainage

• Whether drainage work is required

• Whether the unit will create nuisance water

• Whether the system is near paths, foundations or neighbouring areas

• Whether a plumber needs to add drainage provisions

Condensate drainage is often overlooked but can affect installation suitability.

Electrical Requirements

Heat pump hot water systems require electricity.

Before ordering, confirm:

• Electrical supply suitability

• Circuit requirements

• Switchboard suitability

• Whether electrical work is needed

• Whether timer or control setup is required

• Whether solar PV timing is planned

• Whether a licensed electrician is required

Electrical work must be completed by a licensed electrician where required.

Brisbane and Gold Coast Considerations

Brisbane and Gold Coast homes can be well suited to heat pump hot water where the property has outdoor space, airflow and drainage.

Common local considerations include:

• Narrow side access

• Townhouse layouts

• Outdoor noise placement

• Coastal exposure on the Gold Coast

• Condensate drainage

• Electrical supply

• Replacement of older electric storage systems

• Solar PV timing

• Existing slab or base condition

• Access for delivery and old unit removal

Selected supplied-and-installed options are available on eligible Installed Today products in Brisbane and Gold Coast service areas where shown. Availability depends on the product, address and installation requirements.

Heat Pump vs Gas Hot Water

A heat pump and a gas hot water system suit different homes.

Heat Pump May Suit:

• Homes without gas

• Customers wanting an efficient electric storage-style system

• Properties with outdoor space

• Homes with suitable airflow and drainage

• Customers moving away from gas

• Homes with solar PV where timing suits usage

Gas Hot Water May Suit:

• Homes with existing natural gas or LPG

• Customers wanting gas storage or instant gas

• Properties with suitable gas pipe sizing

• Homes with suitable water pressure

• Customers wanting a compact continuous flow unit

Customers comparing gas alternatives can browse gas hot water systems, instant gas hot water systems and 26L instant gas hot water systems.

Natural gas and LPG are not interchangeable. Gas work must be completed by a licensed gas fitter.

Heat Pump vs Solar Hot Water

Heat pumps and solar hot water can both suit households looking beyond standard electric storage, but they have different requirements.

Heat Pump May Suit:

• Homes with outdoor space but unsuitable roof conditions

• Shaded properties

• Homes where roof access is difficult

• Customers replacing electric storage

• Properties where condensate drainage can be managed

Solar Hot Water May Suit:

• Homes with suitable roof orientation

• Minimal shading

• Suitable roof pitch

• Safe roof access

• Suitable roof structure

• Correct booster setup

• Practical maintenance access

Solar hot water often needs electric or gas boosting for cloudy weather or high-demand periods. STCs, rebates and incentives can change, so eligibility should be confirmed before choosing a system based on rebates.

Rebates, STCs and Incentives

Some heat pump hot water systems may be eligible for STCs, rebates or incentives depending on the product, location, installation details and current program rules.

These programs can change. Eligibility should be checked before purchase and should not be treated as guaranteed.

Do not choose a heat pump based only on a possible rebate. The system must still suit the home, household demand, installation location, electrical supply, drainage and access.

Supply-Only vs Supplied-and-Installed

Installed Today offers supply-only ordering across major Australian metro areas. This can suit customers who already have a licensed installer organised and want to order the product online.

Selected supplied-and-installed options are available on eligible products in Brisbane and Gold Coast service areas. Availability depends on the product, address and installation requirements.

For supply-only products, the listed product price generally covers the product only.

It does not usually include:

• Installation labour

• Plumbing alterations

• Electrical work

• New valves

• Pipework changes

• Drainage changes

• Condensate drainage work

• Tempering valve upgrades

• Pressure limiting valve upgrades

• Expansion control valves

• Old unit removal

• Disposal

• Compliance upgrades

• Concrete bases or slab work

• Relocation of the system

• Rebate administration

• Site assessment

For heat pump systems, confirm airflow, outdoor location, condensate drainage, electrical suitability, access and noise placement with a licensed installer before ordering.

Common Heat Pump Buying Mistakes

Choosing Only by Rebate

A rebate may reduce upfront cost where eligible, but it should not be the only reason for choosing a system.

Ignoring Noise Placement

A heat pump located near bedrooms, neighbours or tight side paths may create issues if noise placement is not considered.

Forgetting Condensate Drainage

Heat pumps produce condensate that needs to drain properly.

Assuming Any Outdoor Spot Will Work

Heat pumps need airflow and clearance. Not every outdoor location is suitable.

Choosing the Same Size as the Old System

If the old electric system ran out of hot water, replacing it with a similar size heat pump may not solve the issue.

Not Checking Electrical Requirements

Some installations may require electrical work or circuit checks.

Assuming Heat Pumps Are Always Best

Heat pumps can be excellent in suitable homes, but they are not automatically the right choice for every property.

Before Ordering Checklist

Before choosing a heat pump hot water system, check:

• How many people live in the home?

• How many bathrooms are used daily?

• Are showers used at the same time?

• Does the household use a bath?

• Did the old system run out of hot water?

• Is a 250L, 270L, 280L or 300L system more suitable?

• Is there outdoor space for the unit?

• Does the location have clear airflow?

• Can condensate drainage be managed?

• Is the unit near bedrooms or neighbours?

• Is electrical supply suitable?

• Is solar PV timing being considered?

• Is access suitable for delivery?

• Is the existing base or slab suitable?

• Is old unit removal included or separate?

• Is the product supply-only or supplied-and-installed?

• Has a licensed installer confirmed suitability?

Frequently Asked Questions

What is the best heat pump hot water system?

The best heat pump hot water system depends on household size, tank capacity, outdoor space, airflow, drainage, electrical supply and noise placement. Popular options to compare include iStore, Rheem, Rinnai and Enviroheat heat pump systems available through Installed Today.

Is a heat pump hot water system worth it?

A heat pump can be worth considering if you want an efficient electric hot water system and the property has suitable outdoor space, clear airflow, condensate drainage and electrical supply.

What size heat pump hot water system do I need?

Size depends on household demand. Around 250L may suit some small to medium households, while 270L to 300L systems may suit larger or higher-demand homes. Shower habits and simultaneous use matter as much as household size.

Can a heat pump work with solar panels?

A heat pump can work well with solar PV where timer settings, household usage and electrical setup suit daytime operation. This should be confirmed with a licensed installer or electrician.

Are heat pump rebates available?

Some heat pump hot water systems may be eligible for STCs, rebates or incentives depending on current program rules, product type, location and installation details. Eligibility can change and should be checked before purchase.

Are heat pumps noisy?

Heat pumps have fans and compressors, so noise placement matters. Check the product details and avoid placing the unit near bedrooms, neighbouring bedrooms or tight acoustic spaces where possible.

Can a heat pump be installed indoors?

Most domestic heat pump hot water systems need outdoor space and clear airflow. Installation location must follow the manufacturer’s instructions and be confirmed by a licensed installer.

Does supply-only pricing include installation?

No. Supply-only pricing generally covers the product only. It does not usually include installation labour, plumbing work, electrical work, valves, drainage, old unit removal, disposal or compliance upgrades unless clearly listed.

Final Word

A heat pump hot water system can be a practical upgrade for many Australian homes, especially where the property has outdoor space, clear airflow, suitable electrical supply and manageable condensate drainage.

The right system depends on household size, hot water usage, tank capacity, noise placement, recovery time, solar PV timing and installation requirements.

Installed Today makes it easy to compare heat pump hot water systems, including medium heat pump hot water systems from 200L to 280L, large heat pump hot water systems over 280L and Wi-Fi enabled heat pump hot water systems.

For supply-only orders, confirm suitability with a licensed installer before purchasing. For eligible Brisbane and Gold Coast products, check whether a supplied-and-installed option is available where shown.