Electric Hot Water Systems
Shop electric hot water systems online with Installed Today for supply-only ordering across major Australian metro areas, with supplied and installed options available on selected products in eligible Brisbane and Gold Coast service areas.
Electric hot water systems are one of the most common choices for Australian homes, units, townhouses, rental properties and replacement jobs. They are available in compact sizes for smaller spaces, standard family-sized tanks for everyday household use, and larger capacity systems for homes with higher hot water demand.
This collection is built for customers comparing electric storage hot water systems, instant electric hot water options, and practical like-for-like electric replacements. Whether your old electric tank has failed, your household needs more hot water, or you are choosing a system for a renovation or rental property, Installed Today makes it easier to compare trusted brands, tank sizes, prices and installation options before you order.
Choose supply only if you already have your own licensed installer arranged. Choose supplied and installed where available if you want the electric hot water system and installation organised together in an eligible Brisbane or Gold Coast service area.
Supply Only Electric Hot Water Systems Across Australian Metro Areas
Supply only is ideal if you already have a licensed plumber or electrician ready to install your new electric hot water system. This option suits homeowners organising their own trade, builders ordering systems for projects, property managers working with preferred contractors, and trade customers who only need the unit supplied.
The product price is for the electric hot water system only. Installation, valves, old unit removal, disposal, electrical work, pipework changes, tempering valves, drainage work, access upgrades and compliance upgrades are not included unless selected separately.
Before ordering supply only, check that the electric hot water system suits the property, existing electrical setup, available space, access path, household demand and installation requirements. This is especially important when changing tank size, moving the unit, replacing an indoor model, upgrading from a smaller system, or switching from another hot water type to electric.
Supplied and Installed Electric Hot Water Systems in Brisbane and Gold Coast
Supplied and installed options are available on selected electric hot water systems in eligible Brisbane and Gold Coast service areas. This option is designed for customers who want the product and installation organised together instead of buying the unit separately.
Supplied and installed can be useful when your existing electric hot water system has failed, when a rental property needs a practical replacement, or when you want a clearer online process before booking the job.
Availability depends on your address, existing system, tank size, installation location, site access, plumbing setup, electrical requirements and current compliance needs. Some jobs may need additional valves, disposal, electrical work, pipework changes, drainage changes or compliance upgrades depending on the property.
What Is an Electric Hot Water System?
An electric hot water system uses electricity to heat water for showers, taps, baths, kitchens, laundries and general household use. Most electric systems in Australian homes are storage-style units, where water is heated and held inside an insulated cylinder until it is needed.
Electric storage systems are popular because they are simple, familiar and available in a wide range of sizes. They are often chosen when a home already has an electric storage tank and the owner wants a practical like-for-like replacement without changing energy type.
Instant electric hot water systems are different. Instead of storing hot water in a tank, they heat water as it passes through the unit. These systems are usually more suited to specific fixtures, smaller applications or low-demand areas rather than larger family homes with multiple bathrooms.
For most whole-home electric hot water replacements, storage systems are still the main option customers compare.
Electric Storage vs Instant Electric Hot Water
Electric storage hot water systems are best suited to homes that need a reliable volume of stored hot water ready for daily use. They are available in common household sizes such as 50L, 125L, 160L, 250L, 315L and 400L, giving customers a clear way to match the system to the property and household demand.
Storage systems can suit small units, family homes, rental properties and larger households, depending on the chosen capacity. They are often the most straightforward option when replacing an existing electric storage tank.
Instant electric hot water systems are usually selected for smaller spaces or specific outlets. They may suit a kitchen, office, granny flat, laundry, hand basin or compact unit where a large storage tank is not practical. They are not always the best choice for high-demand whole-home hot water use, especially where multiple showers or outlets may run at once.
The right choice depends on the property, electrical supply, water demand, available space and how the system will be used each day.
Electric Hot Water System Size Guide
Choosing the right size electric hot water system is one of the most important parts of buying online. A tank that is too small may run out during peak use, while a tank that is too large may cost more upfront and take up more space than needed.
50L electric hot water systems can suit small units, single users, kitchens, laundries, offices, granny flats and low-demand spaces.
125L electric hot water systems are commonly considered for small homes, couples, apartments and properties with lighter hot water use.
160L electric hot water systems can suit small to medium households, townhouses, units and homes that need more capacity than a compact system but do not require a large family tank.
250L electric hot water systems are a popular family-sized option and are often chosen for everyday household replacement jobs.
315L electric hot water systems are commonly selected for larger families, homes with higher daily hot water use, multiple bathrooms or properties where a bigger stored volume is preferred.
400L electric hot water systems may suit large households, high-use properties or homes where stored hot water demand is consistently above average.
The right size depends on the number of people in the home, shower habits, number of bathrooms, bath usage, laundry use, tariff setup and whether hot water is needed heavily at certain times of day.
Single Element and Twin Element Electric Hot Water Systems
Some electric storage hot water systems are single element models, while others are twin element models. The right option depends on the household, electrical setup and how the system is intended to operate.
Single element electric hot water systems are common and can suit many standard replacement jobs. They heat water using one element and are often selected where the existing setup is already single element.
Twin element systems include two heating elements and may be used in homes that need faster recovery or have specific electrical tariff arrangements. They are not always required for every property, but they can be useful where the home has higher hot water demand or where the electrical setup supports that style of system.
Before ordering, check the existing system, element configuration, electrical requirements and suitability with your installer.
Electric Hot Water for Off-Peak Electricity
Electric storage hot water systems are often used with off-peak electricity arrangements, depending on the property and local tariff setup. Off-peak systems usually heat during set times, so the tank size becomes especially important.
A smaller tank may suit a lower-use household, but larger homes may need a bigger stored volume to get through daily use between heating periods. This is why many families compare 250L, 315L and 400L electric hot water systems when choosing an off-peak replacement.
If your home uses off-peak electricity, check that the new electric hot water system suits your household demand, electrical setup and expected recovery pattern before ordering.
Replacing an Existing Electric Hot Water System
If your current electric hot water system has worked well, replacing it with a similar type and size can often be the most practical option. This may mean choosing the same tank capacity, similar dimensions, similar connection points and a model suited to the same installation location.
However, replacement is also a good time to check whether your current system still suits the home. A growing family may need more capacity. A smaller household may be able to choose a smaller tank. A rental property may need a practical, reliable system that suits the number of occupants. A renovation may change where the system can be installed.
Before ordering, check the old unit’s size, model type, indoor or outdoor location, available space, access path, valve condition, drainage, electrical supply, connection positions and whether any compliance upgrades may be required.
Indoor and Outdoor Electric Hot Water Systems
Electric hot water systems may be installed indoors or outdoors depending on the model and property setup. Not every system suits every location, so it is important to check the product specifications before ordering.
Outdoor electric hot water systems are common for houses where the unit sits beside the home, under an eave, near a laundry wall, in a side passage or beside an external service area.
Indoor electric hot water systems may be found in apartments, cupboards, laundries, garages, under benches or internal service spaces. Indoor replacements need careful checking because access, drainage, safe discharge, ventilation, dimensions and removal space can all affect the job.
If you are replacing an indoor electric hot water system, make sure the new unit fits the available space and suits the installation requirements before ordering.
Electric Hot Water Brands Available
Installed Today stocks a range of trusted electric hot water brands across different sizes, price points and product types. Depending on product availability, this may include brands such as Rheem, Rinnai, Dux, Vulcan, Aquamax and Stiebel Eltron.
When comparing brands, look beyond the name on the front of the unit. Consider the tank size, cylinder material, warranty, dimensions, connection positions, element rating, indoor or outdoor suitability, household capacity and whether the model is a practical replacement for your existing system.
Some customers want a budget-friendly electric replacement. Others want a premium model, stainless steel cylinder, larger capacity, compact unit, known brand, or a system that closely matches the old tank. The best choice depends on the home, budget and reason for replacement.
Electric Hot Water System Buying Guide
What size electric hot water system is best for a family home?
For many family homes, 250L, 315L and 400L electric hot water systems are the main sizes compared. A 250L system can suit many standard households, while a 315L system may be better for larger families or homes with higher daily use. A 400L system may suit large households where stored hot water demand is consistently high.
The right size depends on how many people live in the home, how many bathrooms are used, shower habits, bath use, laundry use and whether the system heats on off-peak electricity.
Is it better to replace an electric hot water system with the same size?
Replacing with the same size can be a practical option if the old system handled the home’s hot water demand well. It may also make the replacement simpler if the new unit has similar dimensions and connection positions.
However, staying with the same size is not always the best answer. If the household has grown, the old unit regularly ran out of hot water, or the property now has higher demand, a larger system may be worth comparing. If the home has fewer occupants than before, a smaller system may be more suitable.
Is electric storage hot water still a good option?
Electric storage hot water is still a practical option for many homes, especially where the property already has an electric tank installed and the customer wants a straightforward replacement. It is familiar, widely available and offered in a broad range of sizes.
For customers wanting the lowest upfront replacement path, electric storage can often be simpler than changing to gas, heat pump or another system type. The best choice still depends on the property, electricity setup, household demand and installation conditions.
Should I choose a 250L or 315L electric hot water system?
A 250L electric hot water system is a common choice for many family homes and rental properties. It can suit moderate daily use where the household does not regularly run out of hot water.
A 315L electric hot water system provides more stored hot water and may suit larger families, homes with multiple bathrooms, heavier shower use or properties using off-peak electricity. The larger tank may be useful where peak demand is higher, but space, price, recovery and household usage should all be considered.
When would a 400L electric hot water system make sense?
A 400L electric hot water system may suit large households, high-demand properties, homes with multiple bathrooms, or situations where several people use hot water around the same time. It can also suit properties where a larger stored volume is preferred.
A 400L system is not automatically the best choice for every home. It needs enough installation space, suitable access and a genuine need for the larger capacity.
Can I change from gas hot water to electric hot water?
Changing from gas to electric may be possible, but it is not always a simple like-for-like swap. The property may need electrical work, plumbing changes, disconnection or capping of gas services, a suitable installation location and compliance checks.
If you are changing energy type, make sure the full job requirements are considered before ordering. The product price alone does not include extra electrical, gas, plumbing or compliance work unless selected separately.
What should I check before buying an electric hot water system online?
Before buying an electric hot water system online, check the tank size, physical dimensions, energy source, element setup, indoor or outdoor suitability, connection positions, access path, drainage, electrical requirements and whether the property may need new valves, pipework changes or compliance upgrades.
For supply only, your licensed installer should confirm suitability before installation. For supplied and installed options in Brisbane and Gold Coast, the product page questions help identify common installation requirements before checkout.
What electric hot water system is best for a rental property?
For rental properties, the best electric hot water system is usually practical, reliable and correctly sized for the number of occupants. Many landlords choose like-for-like electric storage replacements because they can reduce complexity when the existing system has worked well.
A 125L or 160L system may suit smaller rentals, while 250L and 315L systems are often compared for family-sized homes. The right choice should balance upfront cost, tenant demand, installation conditions and long-term suitability.
Why Buy Electric Hot Water Systems from Installed Today?
Installed Today makes it easier to compare electric hot water systems online by bringing popular sizes, trusted brands and clear ordering options into one collection.
You can compare compact electric systems, family-sized tanks, larger capacity models and selected instant electric options without visiting a showroom or waiting for multiple quotes just to understand your choices.
Customers choose Installed Today for supply-only ordering across major Australian metro areas and supplied and installed options on selected electric hot water systems in eligible Brisbane and Gold Coast service areas.
Whether you need a simple like-for-like electric replacement, a larger family-sized tank, a compact unit for a smaller space, or a supply-only product for your own installer, this collection helps you choose an electric hot water system that suits the property, budget and household demand.
