Heat Pump vs Electric Hot Water Systems: Which Is Better?

Choosing between a heat pump and a standard electric hot water system depends on your home, budget, household size, available outdoor space, airflow, noise considerations and whether you want a simple like-for-like replacement or a more efficient electric hot water option. Both systems use electricity, but they work very differently.

At Hot Water Outlet, you can compare heat pump hot water systems, electric hot water systems, hot water systems, valves, pipework and fittings, plus other options such as gas hot water systems and instant gas hot water systems.

Quick Answer: Is Heat Pump or Electric Hot Water Better?

A heat pump hot water system is usually better if you want an efficient electric storage option and your property has suitable outdoor space, airflow, drainage and noise conditions.

A standard electric hot water system is usually better if you want a simpler, lower-upfront-cost, like-for-like tank replacement and the existing electric storage setup already suits your home.

As a general guide:

• Choose a heat pump hot water system if you are replacing electric storage and want a more energy-efficient electric option.

• Choose an electric hot water system if you want a straightforward tank-style replacement.

• Choose heat pump if outdoor space, airflow and noise placement are suitable.

• Choose standard electric storage if space is tight, the home is a unit or townhouse, or a heat pump location is not practical.

• Choose heat pump if long-term energy use matters more than the lowest upfront product price.

• Choose electric storage if upfront price, simplicity and like-for-like replacement are the main priorities.

The better option is the one that suits the property. A heat pump can be excellent in the right location, but standard electric storage can still be the more practical choice for some homes.

Heat Pump vs Electric Hot Water at a Glance

Both systems store hot water in a tank. The difference is how they heat the water and what the property needs to support them.

What Is a Heat Pump Hot Water System?

A heat pump hot water system uses electricity to draw heat from the surrounding air and transfer that heat into the stored water. It still has a tank, but it does not work like a standard electric element-only storage system.

Heat pump hot water may suit homes where:

• The current system is electric storage

• Energy efficiency is a priority

• Outdoor space is available

• Airflow around the unit is suitable

• Noise can be managed

• Condensate drainage can be handled

• The tank capacity suits household demand

• The property has suitable access and location

A heat pump is often compared when replacing older electric storage because it can provide an efficient electric hot water option without changing to gas.

What Is a Standard Electric Hot Water System?

A standard electric hot water system heats and stores water in a tank using an electric element. It is one of the most common hot water system types in Australian homes.

Electric storage may suit homes where:

• The current system is electric storage

• A simple tank replacement is preferred

• Outdoor heat pump space is not available

• The property is a unit, townhouse or compact home

• Upfront product cost is a major factor

• The existing tank location works

• A like-for-like replacement is the easiest option

Electric storage is usually compared by tank capacity, recovery rate, dimensions, power requirements, pressure rating and connection positions.

Main Difference Between Heat Pump and Electric Hot Water

The main difference is how the water is heated.

A standard electric storage system uses an electric element to heat the water directly.

A heat pump uses electricity to move heat from the surrounding air into the water. This usually gives heat pumps stronger efficiency potential where the system is correctly located and sized.

Both systems:

• Use electricity

• Store hot water in a tank

• Need correct tank capacity

• Need suitable power requirements

• Need compatible valves and fittings

• Need licensed tradespeople for connection work

The key decision is whether your property suits heat pump location requirements or whether standard electric storage is the more practical replacement.

Heat Pump Pros

A heat pump can be a strong choice for many homes replacing electric storage.

Benefits may include:

• Better energy efficiency potential than standard electric storage

• Useful option for homes without gas

• Good replacement pathway from old electric storage where location suits

• Can suit families when correctly sized

• Available from recognised hot water brands

• May suit homes wanting to reduce reliance on standard electric element heating

• Often considered when comparing long-term running costs

Heat pumps are especially worth comparing when the home already has electric hot water and the owner wants a more efficient electric storage system.

Heat Pump Cons

A heat pump is not the best choice for every property.

Potential drawbacks include:

• Higher upfront product price than many standard electric tanks

• Needs suitable outdoor space

• Needs good airflow

• Needs noise placement planning

• Needs condensate drainage

• May not suit tight side passages, enclosed areas or some units

• May be more complex than a simple electric storage replacement

• Larger units may need more delivery and access planning

The main mistake is choosing a heat pump based only on energy efficiency without checking whether the property is physically suitable.

Standard Electric Hot Water Pros

Standard electric storage can still be a practical choice.

Benefits may include:

• Usually lower upfront product cost than heat pump

• Familiar tank-style system

• Often practical for like-for-like replacement

• Can suit units, townhouses and compact spaces

• Does not need the same airflow conditions as heat pump

• Usually simpler to compare when replacing an existing electric tank

• Available in a wide range of tank sizes

Electric storage is often the simpler choice when the current system is electric and the property does not suit a heat pump.

Standard Electric Hot Water Cons

Standard electric storage may not be the best option for every home.

Potential drawbacks include:

• Usually less efficient than heat pump hot water

• Larger tanks may use more energy than needed if oversized

• Small tanks can run out quickly if undersized

• May not be the best long-term option where energy efficiency is the main goal

• Still needs correct power requirements, space and tank sizing

• May not suit households wanting a more efficient electric upgrade

The main mistake is replacing an old electric tank with the same size without checking whether a heat pump or different tank size would be better.

Heat Pump vs Electric Storage for Running Costs

Heat pumps are usually compared because they can use less electricity than standard electric storage in suitable conditions. Standard electric storage uses an electric element directly, while a heat pump uses electricity to move heat from the air into the water.

However, running costs depend on:

• Household hot water use

• Tank size

• Climate and location

• System settings

• Electricity tariff

• Outdoor airflow

• Product design

• Installation quality

• Whether the system is oversized or undersized

• Maintenance and age

A heat pump with poor airflow or the wrong location may not perform as well as expected. An oversized standard electric tank may also use more energy than needed. Correct sizing and suitability matter as much as system type.

Heat Pump vs Electric Storage Upfront Cost

Standard electric storage systems usually have a lower upfront product price than heat pump systems. Heat pumps usually cost more because they include heat pump technology, fan components and different system design.

When comparing upfront cost, check:

• Product price

• Tank capacity

• Brand

• Product specifications

• Warranty information

• Delivery requirements

• Required valves and fittings

• Whether electrical changes may be needed

• Whether plumbing changes may be needed

• Whether old system removal or disposal is separate

• Whether installation is quoted separately

Hot Water Outlet sells supply-only hot water systems and accessories online. Supply-only pricing usually does not include installation, plumbing, electrical work, disposal, valves, fittings, pipework changes or compliance upgrades unless clearly stated.

Which Is Better for Energy Efficiency?

Heat pump hot water is usually the better electric option for energy efficiency where the property suits it.

A heat pump may be better if:

• Outdoor space is available

• Airflow is suitable

• Noise can be managed

• The tank size suits the household

• The home has regular daily hot water use

• The owner wants to compare efficient electric hot water

• The property is replacing old electric storage

Standard electric storage may still be suitable if:

• Budget is the main priority

• Heat pump location is not suitable

• Outdoor space is limited

• The current electric tank works well

• The household has low demand

• A simple like-for-like replacement is preferred

Efficiency only matters if the system can be located and used correctly.

Which Is Better for Small Homes?

For small homes, the best option depends on space, demand and budget.

Heat pump may suit a small home if:

• There is suitable outdoor space

• Airflow is available

• Noise placement works

• The household uses hot water regularly

• The selected tank size is not oversized

Electric storage may suit a small home if:

• Space is limited

• A compact tank is already installed

• The home has lower demand

• A heat pump location is not practical

• A lower upfront product price is preferred

A small home should not automatically choose the smallest tank or the cheapest system. The system still needs to suit daily use.

Which Is Better for Units?

Standard electric storage is often more practical for many units because heat pumps need outdoor space, airflow and noise planning. Some units may not have a suitable location for a heat pump.

Electric storage may suit a unit if:

• The current system is an electric tank

• The tank is in a cupboard or service area

• The building has no suitable outdoor heat pump location

• Body corporate rules restrict external equipment

• Delivery access and dimensions suit the replacement

Heat pump may suit some units only if:

• Outdoor space is available

• Airflow is suitable

• Noise restrictions can be met

• Body corporate rules allow it

• Condensate drainage is possible

• Product dimensions and access work

For many units, the existing system type and building rules are the best starting point.

Which Is Better for Townhouses?

Townhouses can suit either heat pump or standard electric storage depending on layout.

Heat pump may suit a townhouse if:

• There is a courtyard, side passage or outdoor area with airflow

• Noise can be managed

• Delivery access is suitable

• Body corporate or complex rules allow it

• The tank capacity suits household demand

Electric storage may suit a townhouse if:

• The existing tank is in a garage, cupboard or service area

• Outdoor heat pump space is limited

• The household wants a simple replacement

• The current system size works well

Townhouses need careful checking because neighbouring homes can be close and outdoor space can be tight.

Which Is Better for Families?

Families usually use more hot water, so correct tank size matters heavily.

Heat pump may suit families if:

• The household wants efficient electric hot water

• The tank capacity suits daily demand

• Outdoor space and airflow are suitable

• Noise placement can be managed

• The current electric tank is old or inefficient

Electric storage may suit families if:

• A larger electric tank is already installed

• A like-for-like replacement is preferred

• Heat pump location is not suitable

• Upfront product cost is the main factor

• The household wants a familiar tank-style system

For families, do not choose by system type alone. Compare tank size, recovery, space, usage and product specifications.

Which Is Better for a Family of 4?

A family of 4 may suit either a medium to larger electric storage system or a correctly sized heat pump.

Choose heat pump if:

• You want efficient electric storage

• Outdoor space and airflow are suitable

• The tank capacity matches family demand

• Noise location is acceptable

• The household uses hot water daily

Choose electric storage if:

• You want a straightforward tank replacement

• The current tank size works well

• Heat pump space is limited

• Upfront cost is a priority

• The home does not suit heat pump placement

If the current electric tank runs out often, compare a larger capacity or better-suited heat pump before ordering.

Which Is Better for Larger Families?

Larger families need more hot water and stronger sizing decisions.

Heat pump may suit larger families if:

• A larger tank capacity is available

• Outdoor space suits the unit

• Airflow is suitable

• Noise placement is practical

• Daily hot water use is high enough to justify comparison

Electric storage may suit larger families if:

• A larger electric tank fits the existing location

• Heat pump placement is not practical

• A simple replacement is needed

• The current system type already works well

For larger families, heat pump efficiency may be attractive, but capacity and site suitability still come first.

Which Is Better for Rental Properties?

Rental properties need a practical, reliable system that suits likely tenant demand.

Heat pump may suit a rental property if:

• The property has suitable outdoor space

• Airflow and noise conditions are acceptable

• The tank capacity suits likely tenants

• The owner wants to compare efficient electric hot water

• The property is replacing electric storage

Electric storage may suit a rental property if:

• A fast, simple like-for-like replacement is preferred

• The current electric tank location works

• Heat pump placement is not suitable

• Upfront product cost matters

• The property is a unit or compact townhouse

For rentals, avoid undersizing. A cheaper small tank can create tenant complaints if it cannot keep up.

Which Is Better for Renovations?

Renovations are a good time to compare heat pump vs electric storage because system location and hot water demand may change.

Heat pump may suit a renovation if:

• Outdoor location can be planned early

• Airflow and drainage can be allowed for

• The renovation increases hot water demand

• The owner wants an efficient electric system

• The tank capacity suits the finished home

Electric storage may suit a renovation if:

• The existing electric system location still works

• Outdoor heat pump location is not available

• A simple tank replacement is preferred

• Budget is a key factor

• The property layout suits standard storage better

Plan the hot water system for the finished home, not the old layout.

Heat Pump vs Electric Storage for One Bathroom

A one-bathroom home may suit either system.

Heat pump may suit if:

• The home has regular daily hot water use

• Outdoor space and airflow are available

• The household wants efficient electric storage

• The tank capacity suits use

Electric storage may suit if:

• The home has lower demand

• A compact tank is already installed

• Outdoor space is limited

• A lower upfront product price is preferred

One bathroom does not automatically mean low demand. A one-bathroom family home may still need a capable system.

Heat Pump vs Electric Storage for Two Bathrooms

A two-bathroom home usually needs more careful sizing.

Heat pump may suit if:

• The selected tank capacity supports two-bathroom demand

• Outdoor space is available

• Airflow and noise placement are suitable

• The household wants an efficient electric option

Electric storage may suit if:

• A medium to larger electric tank already fits

• A simple replacement is preferred

• A heat pump location is not suitable

• Upfront cost is a major factor

For two bathrooms, tank capacity, shower timing and bath use matter more than system type alone.

Heat Pump vs Electric Storage With Solar Power

Some homeowners compare heat pumps and electric storage because they already have solar power or plan to use more electric appliances.

A heat pump may be worth comparing with solar where:

• The system can be timed or managed appropriately

• Household usage suits stored hot water

• The property has suitable outdoor space

• The selected model supports the intended setup

• Licensed tradespeople confirm suitability

Standard electric storage may still be used in homes with solar, but product choice, timer setup, tariff structure and household use all matter.

Do not assume any hot water system will automatically deliver the best outcome with solar. The setup needs to be assessed properly.

Heat Pump Rebates vs Electric Storage Price

Some heat pump hot water systems may be eligible for rebates or incentives depending on current program rules, product eligibility, state, installer requirements and property details.

Rebates can change, so they should not be assumed.

Before relying on a rebate, check:

• Current state or territory rules

• Product eligibility

• Installer requirements

• Customer eligibility

• Whether the program is still active

• Whether the price already includes rebate assumptions

• Whether the system must be installed by an approved provider

A rebate can improve heat pump value, but the system still needs to suit the property. Do not choose a heat pump only because of a rebate if the location is unsuitable.

Heat Pump Location Requirements

Heat pump location is one of the biggest decision factors.

Before choosing a heat pump, check:

• Outdoor space

• Airflow around the unit

• Clearance from walls and fences

• Noise rating

• Distance from bedrooms

• Distance from neighbours

• Condensate drainage

• Delivery access

• Product dimensions

• Base or platform requirements

• Connection positions

• Electrical requirements

A heat pump with the right tank capacity can still be the wrong system if it cannot be located properly.

Electric Storage Location Requirements

Standard electric storage also needs a suitable location, but it generally does not have the same airflow and fan noise considerations as a heat pump.

Before choosing electric storage, check:

• Tank height

• Tank width

• Tank depth

• Existing location

• Indoor or outdoor suitability

• Power requirements

• Connection positions

• Delivery access

• Drainage

• Required valves and fittings

• Whether the existing base or area is suitable

Electric storage can be easier in tight locations, especially where the home already has a tank in place.

Heat Pump vs Electric Hot Water Sizing

Heat pump and electric storage systems are both sized by tank capacity in litres.

When comparing sizes, check:

• Number of people in the home

• Number of bathrooms

• Number of showers per day

• Bath use

• Kitchen use

• Laundry use

• Whether showers happen back-to-back

• Whether the current system runs out

• Desired tank capacity

• Product dimensions

• Recovery information

• Location suitability

A similar tank capacity may be a useful starting point when replacing old electric storage, but do not rely on tank size alone. Household demand may have changed.

Should You Replace Electric Storage With a Heat Pump?

Replacing electric storage with a heat pump may be worth comparing if your property suits it.

A heat pump may be worth considering if:

• The old electric tank is due for replacement

• The household wants efficient electric hot water

• Outdoor space is available

• Airflow is suitable

• Noise can be managed

• Tank capacity suits demand

• Delivery access is suitable

• Condensate drainage can be managed

A standard electric replacement may be more practical if:

• The old tank location is tight

• Outdoor space is not suitable

• Upfront product price is the main priority

• The property is a unit or small townhouse with limited external area

• You want the simplest like-for-like option

Should You Stay With Standard Electric Storage?

Staying with standard electric storage may be the right choice if it suits the home.

Standard electric storage may be practical if:

• The current tank has worked well

• Household demand has not changed

• The tank location is suitable

• There is no suitable heat pump location

• Budget matters

• The property is compact

• The household wants a familiar system

However, if energy efficiency is a priority and the property has suitable outdoor space, compare heat pump options before replacing with another standard electric tank.

Common Mistakes When Comparing Heat Pump vs Electric Hot Water

Choosing Heat Pump Without Checking Location

Heat pumps need airflow, drainage and noise planning. Location suitability is essential.

Choosing Electric Storage Without Comparing Efficiency

If the property suits a heat pump, it may be worth comparing before buying another standard electric tank.

Choosing by Upfront Price Only

A standard electric tank may cost less upfront, but heat pump may be worth comparing for long-term energy use.

Choosing by Efficiency Only

A heat pump is not automatically best if the location is poor or tank size is wrong.

Replacing With the Same Size Without Checking Demand

Household size, bathroom count and shower habits may have changed since the old tank was installed.

Ignoring Dimensions

Both heat pump and electric storage systems need to physically fit the available space.

Forgetting Noise Rating

Heat pumps make operating noise, so placement near bedrooms or neighbours needs consideration.

Forgetting Valves and Fittings

The main system may not be the full order. Valves, pipework and fittings may also be required.

Heat Pump vs Electric Hot Water Buyer Checklist

Before choosing between heat pump and electric storage, check:

• Current hot water system type

• Current brand and model

• Current tank capacity

• Whether the current system runs out

• Number of people in the home

• Number of bathrooms

• Number of showers per day

• Bath use

• Kitchen hot water use

• Laundry use

• Desired tank capacity

• Available outdoor space

• Airflow if choosing heat pump

• Noise rating if choosing heat pump

• Condensate drainage if choosing heat pump

• Power requirements

• Product dimensions

• Connection positions

• Delivery access

• Required valves and fittings

• Warranty information

• Product specifications

• Rebate eligibility if relevant

Compare Heat Pump and Electric Hot Water Online

Hot Water Outlet makes it easier to compare heat pump and electric hot water systems by size, brand, dimensions and product specifications.

Start with:

• Heat Pump Hot Water Systems

• Electric Hot Water Systems

• Hot Water Systems

• Valves, Pipework and Fittings

If you are still comparing energy sources, you can also review gas hot water systems and instant gas hot water systems.

FAQs About Heat Pump vs Electric Hot Water

Is heat pump hot water better than electric?

Heat pump hot water can be better than standard electric storage where the property has suitable outdoor space, airflow, drainage and noise conditions. Standard electric storage may be better where a simple, lower-upfront-cost replacement is preferred.

Is a heat pump cheaper to run than electric hot water?

A heat pump generally has better efficiency potential than standard electric storage, but running costs depend on usage, tariff, climate, location, system settings, tank size and household demand.

Is heat pump hot water worth it?

Heat pump hot water may be worth comparing if you are replacing electric storage and want an efficient electric hot water option. It is most suitable where outdoor space, airflow and noise placement are appropriate.

What is the downside of heat pump hot water?

Heat pumps usually cost more upfront than standard electric storage and need suitable outdoor space, airflow, drainage and noise planning. They may not suit every unit, townhouse or tight outdoor area.

Should I replace my electric hot water system with a heat pump?

Replacing electric storage with a heat pump may be worth comparing if the current system is old, the home has suitable outdoor space and the household wants efficient electric hot water.

Is standard electric hot water still worth buying?

Standard electric storage can still be worth buying where the current system works well, heat pump location is unsuitable, upfront product price matters or a straightforward tank replacement is preferred.

What size heat pump do I need compared with electric storage?

Heat pumps and electric storage systems are both sized by tank capacity in litres. The right size depends on household demand, bathrooms, shower habits, bath use and whether the current system runs out.

Can a heat pump replace an electric hot water system?

A heat pump can replace electric storage in many suitable homes, but outdoor space, airflow, electrical requirements, dimensions and condensate drainage need to be checked first.

Do heat pump and electric hot water systems need valves and fittings?

Some replacements require valves, fittings or pipework depending on the system type, pressure rating and connection layout. Browse valves, pipework and fittings and confirm compatibility before ordering.

Can I install a heat pump or electric hot water system myself?

No. Hot water systems involve plumbing and electrical work that should be completed by appropriately licensed tradespeople. Hot Water Outlet sells supply-only hot water systems and accessories online, and may help organise quotes from reputable installers where appropriate.

Find the Right Heat Pump or Electric Hot Water System

The right choice between heat pump and electric hot water depends on your household demand, available space, budget and replacement setup. Heat pump hot water may suit homes wanting efficient electric storage where outdoor space and airflow are suitable. Standard electric storage may suit homes needing a straightforward, practical tank replacement.

Browse heat pump hot water systems and electric hot water systems online with Hot Water Outlet to compare electric hot water options by brand, tank size and product specifications.