# Electric Hot Water Systems Perth | HWS Perth

> Perth electric hot water installation and repair. Instantaneous and storage electric units, single and dual element, off-peak options. Free quotes, call today.

URL: https://perthhotwatersystem.com.au/electric-hot-water/

![Perth plumber servicing an electric storage hot water tank with the element access panel open](/images/misc/perth-plumber-working-on-an-electric-storage-hot-w.webp)

# Electric Hot Water Systems, Install & Repair in Perth

Last updated: 10 August 2026

Instantaneous and storage electric hot water, single and dual element, off-peak ready, installed and repaired across Perth.

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-   schedule 24/7 Emergency Service
-   request\_quote Free upfront quotes
-   verified 100% Satisfaction Guarantee

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[/contact/ →](/contact/)

 

call 08 6243 6734

[tel:+61862436734 →](tel:+61862436734)

JOB TYPE

## Electric Hot Water

WA LICENSED verified PLUMBER & GAS

-   check\_circle Instantaneous and storage electric units
-   check\_circle Single and dual element systems
-   check\_circle Off-peak tariff options
-   check\_circle Element and thermostat fault repairs

INDICATIVE

From $500

Book this service

[/contact/ →](/contact/)

star 4.9 (150+ Google reviews)

verified\_user Licensed & Insured

schedule 24/7 Emergency Service

task\_alt 1,000+ jobs completed

## Electric hot water, repaired properly and replaced honestly

We supply, install and repair electric hot water systems throughout Perth, from compact instantaneous units to single and dual-element storage tanks with off-peak tariff options. Our licensed plumbers diagnose element and thermostat faults fast and size replacements to suit your household and budget.

Electric storage is still the most common 

hot water system in Perth

[/ →](/)

 homes, mostly because it is the cheapest to buy and install and it works anywhere there is power. That simplicity is also its weakness: it is the most expensive of the four main system types to run, and a tank that is oversized for its household quietly loses heat around the clock for a decade.

![Plumber testing a hot water heating element with a multimeter beside the open access panel](/images/misc/plumber-using-a-multimeter-to-test-a-hot-water-hea.webp)

### The three faults behind almost every no-heat call

**A tripped circuit breaker.** Reset it once. If it trips again, there is a genuine fault, most often a shorted element, and it needs a licensed repair rather than repeated resets.

**A failed thermostat.** The thermostat tells the element when to fire. When it fails you get no heat at all, or water that never reaches temperature. It is an inexpensive part and a quick swap.

**A burnt-out heating element.** The classic. On a dual-element storage tank, losing the bottom element leaves you with a small amount of hot water that runs out unusually fast, while losing the top element often means nothing at all. We carry elements on the truck, so most of these calls are one visit.

The fourth thing we always check is the sacrificial anode rod. It is a consumable component designed to corrode so your steel cylinder does not. Perth’s water hardness chews through them faster than the manufacturer’s assumed interval, and once the anode is gone the tank starts eating itself. Rusty or discoloured hot water is the warning sign, and by then you are usually looking at a replacement rather than a repair.

### Sizing, off-peak and recovery rate

Getting capacity right matters more on electric than on any other type, because recovery is slow. A rough guide: 50 to 80 litres for one or two people, 125 to 170 litres for a family of three or four, and 250 to 400 litres for larger households or where you are running an off-peak tariff.

Off-peak deserves a proper explanation, because it is often set up badly. On an off-peak tariff the element only fires during a cheap overnight window, so the tank has to store an entire day’s hot water. Put a 160 litre tank on off-peak in a four-person house and you will run out by dinner time. Sized correctly, though, off-peak electric storage can be genuinely economical.

## What electric hot water costs in Perth

Installed electric systems run from around $500 for a small single-element tank up to $2,500 for a large 400 litre unit or an instantaneous setup. It is the lowest upfront cost of any system type, which is exactly why it is worth pausing before replacing like for like.

Water heating is roughly a quarter of a typical household energy bill. A 

heat pump hot water system

[/heat-pump-hot-water/ →](/heat-pump-hot-water/)

 does the same job for a fraction of the electricity and attracts the federal STC rebate, which we process so it comes off your quote directly. For the numbers, see our guide comparing 

hot water running costs

[/guide/hot-water-running-costs-compared/ →](/guide/hot-water-running-costs-compared/)

, or read 

why an electric system stops heating

[/guide/electric-hot-water-not-heating/ →](/guide/electric-hot-water-not-heating/)

 if you are troubleshooting right now.

## What's included

-   check\_circle Instantaneous and storage electric units
-   check\_circle Single and dual element systems
-   check\_circle Off-peak tariff options
-   check\_circle Element and thermostat fault repairs
-   check\_circle Right-sized replacements

Transparent pricing

## How much does electric hot water cost in Perth?

Electric storage is the lowest-cost system to buy and install. It is not the cheapest to run, which is worth weighing up before you replace like for like.

### Small storage

50L to 125L, singles and couples

$500 - $1,100 per system installed

-   check\_circle Single element
-   check\_circle Compact footprint
-   check\_circle Lowest upfront cost
-   check\_circle Free old tank removal

Get a Free Quote

[/contact/ →](/contact/)

Most common

### Family storage

160L to 315L, off-peak ready

$1,100 - $1,900 per system installed

-   check\_circle Single or dual element
-   check\_circle Off-peak tariff compatible
-   check\_circle Dux and Rheem models
-   check\_circle Anode rod checked at install

Get a Free Quote

[/contact/ →](/contact/)

### Large & instantaneous

400L tanks or instantaneous electric units

$1,900 - $2,500 per system installed

-   check\_circle 400L high-demand tanks
-   check\_circle Instantaneous point-of-use
-   check\_circle Dedicated circuit where needed
-   check\_circle Full compliance certification

Get a Free Quote

[/contact/ →](/contact/)

Prices are indicative only. Every job is quoted upfront and in writing after we check your site, so there are no surprises. Low-interest financing is available on larger upgrades.

Why us

## Why choose Hot Water System Perth for electric hot water?

local\_shipping

### Elements on the truck

The most common electric hot water fault is a burnt-out element. We carry them, so most no-heat calls are fixed on the first visit.

schedule

### Off-peak set up properly

A large tank on an off-peak tariff can be genuinely cheap to run, but only if the capacity and heating window actually match your usage.

verified\_user

### Anode rod checked

Perth's hard water eats sacrificial anodes. We check yours at every service, because a $150 rod can add years to a $1,500 tank.

savings

### Honest upgrade advice

Electric storage is cheapest to buy and dearest to run. If a heat pump would pay for itself on your usage, we show you the numbers.

engineering

### Right-sized replacements

We size on occupants and peak demand, not on whatever was there before, which is often oversized or undersized by a previous owner.

bolt

### Licensed and certified

Correct electrical isolation, compliant install to AS/NZS 3500.4, and a certificate issued on completion.

Process

## How our electric hot water works

01 search

### Diagnose the fault

We test the element, thermostat and circuit before recommending anything. A no-heat fault is often a $200 part, not a $1,500 tank.

02 request\_quote

### Repair or quote a swap

If the tank has life left, we repair it. If the cylinder is corroded or the age says otherwise, we price a replacement so you can compare.

03 build

### Install and connect

New tanks are positioned, levelled, strapped and connected, with isolation valves and a tempering valve fitted or replaced as required.

04 task\_alt

### Test and hand over

We check delivery temperature, confirm the element and thermostat are cycling correctly, and issue your compliance certificate.

## Need electric hot water in Perth?

Free written quote, licensed plumbers, 24/7 for emergencies, backed by our 100% satisfaction guarantee.

call 08 6243 6734

[tel:+61862436734 →](tel:+61862436734)

 

Get a Free Quote

[/contact/ →](/contact/)

Our work

## Electric Hot Water jobs around Perth

Real jobs from around the metro. Click any image to enlarge.

 

 

Results

## See the difference

![Before: Electric Hot Water transformation](/images/features/ageing-electric-hot-water-tank-with-rusted-base-an.webp) Before

![After: Electric Hot Water transformation](/images/features/replacement-electric-storage-tank-installed-level-.webp) After

Electric Hot Water transformation

## How Hot Water System Perth compares

| Feature | Typical provider | HWS Perth |
| --- | --- | --- |
| No-heat diagnosis | Recommend full replacement | Test element and thermostat first |
| Common parts | Ordered, second visit | Elements and thermostats stocked |
| Anode rod | Never mentioned | Checked at every service |
| Sizing | Match the old tank | Calculated on household demand |
| Running-cost advice | Not offered | Off-peak and heat pump options compared |

Reviews

## What customers say about our electric hot water

Rated 4.9 from 150+ Google reviews across the Perth metro.

starstarstarstarstar

> "Old tank in the side passage of our place finally gave up. They squeezed a new unit into the same spot and had it running the same afternoon."

Sam K. Lathlain

starstarstarstarstar

> "Water was lukewarm for weeks. Turned out to be one of two elements gone. Replaced in under an hour instead of selling me a whole new system."

Michelle O. Dianella

starstarstarstarstar

> "They actually explained the off-peak thing properly and put in a bigger tank so it heats overnight. Bill has come down noticeably."

Rob F. Thornlie

Got questions?

## Electric Hot Water FAQs

### Why is my electric hot water not heating?

expand\_more

The three usual causes are a tripped circuit breaker, a failed thermostat, or a burnt-out heating element. On a dual-element tank, losing the bottom element gives you a small amount of hot water that runs out fast, which is a very recognisable symptom. All three are diagnosed on site with a multimeter rather than guessed at.

### Can I reset an electric hot water system myself?

expand\_more

You can safely reset the circuit breaker at your switchboard once. If it trips again, stop. A repeat trip means there is a genuine fault, usually a shorted element, and it needs a licensed repair rather than another reset.

### How long does a hot water element last?

expand\_more

Typically 5 to 10 years. Perth's harder water shortens that, because scale builds on the element and makes it work harder and run hotter. Sediment at the bottom of the tank has the same effect, which is why regular servicing genuinely extends element life.

### What size electric hot water tank do I need?

expand\_more

As a guide, 50 to 80 litres for one or two people, 125 to 170 litres for a family of three or four, and 250 to 400 litres for larger households or off-peak setups. Off-peak tariffs need a bigger tank because all the heating happens in one overnight window.

### Is electric storage on off-peak cheaper to run?

expand\_more

It can be competitive. Off-peak tariffs charge less per unit overnight, and a large tank heats then coasts through the day. It rarely beats a heat pump though, which draws roughly a third of the energy for the same hot water. We can compare both against your actual usage.

### What is an anode rod and does mine need replacing?

expand\_more

The sacrificial anode is a metal rod inside the tank that corrodes instead of the steel cylinder. Once it is used up, the tank itself starts corroding. In Perth's harder water areas, plan on checking it around every five years. Replacing a rod costs a fraction of replacing a tank.

### Is instantaneous electric hot water worth it?

expand\_more

For a small flat, a single bathroom or a point-of-use application like a laundry trough, yes. It avoids standby losses and takes almost no space. For whole-house use in a family home it draws a lot of power and usually needs significant electrical work, so storage or a heat pump is generally the better fit.

### Why is my hot water rusty or discoloured?

expand\_more

Discoloured hot water usually means the inside of the tank is corroding, which points to a spent anode rod and a cylinder nearing the end of its life. It is worth acting on quickly, because the next stage is a leak from the base and that is a replacement rather than a repair.

### How long do electric hot water systems last in Perth?

expand\_more

Usually 8 to 12 years for a storage tank. Water hardness, how often the anode was replaced, and whether the thermostat has been running hotter than needed all affect it. Systems past 10 years that are already showing rust or repeated faults are usually better replaced than repaired.

### Should I replace my electric system with something cheaper to run?

expand\_more

It is worth doing the numbers. Water heating accounts for roughly a quarter of a typical Perth household's energy bill. A heat pump uses a fraction of the electricity and attracts the federal STC rebate, which we process for you, so the payback on an upgrade is often shorter than people expect.

### Still have a question?

Talk to a licensed Perth plumber. No call-out surprises, no obligation.

Get a Free Quote

[/contact/ →](/contact/)

 

Call 08 6243 6734

[tel:+61862436734 →](tel:+61862436734)

## Related guides

Detailed answers to the questions we get asked most about electric hot water.

Explainer

### Electric Hot Water Not Heating: Thermostat & Element Faults

Electric hot water not heating? A tripped breaker, faulty thermostat or burnt-out element are the usual causes. Safe checks and when to call a plumber.

[Electric Hot Water Not Heating: Thermostat & Element Faults →](/guide/electric-hot-water-not-heating/)

Explainer

### Instantaneous vs Storage Electric Hot Water Systems

Instant electric or a storage tank? Compare how each works, off-peak running costs, space and capacity to pick the right electric hot water system.

[Instantaneous vs Storage Electric Hot Water Systems →](/guide/instantaneous-vs-storage-electric-hot-water/)

## Related services

![Licensed Perth plumber installing a new hot water system on the exterior wall of a suburban home](/images/misc/licensed-perth-plumber-mounting-a-brand-new-hot-wa.webp)

### Hot Water System Installation

Supply and compliant installation of new hot water systems, sized right, installed to WA code, with free old-tank removal.

[Hot Water System Installation →](/hot-water-system-installation/)

![Heat pump hot water unit installed beside a Perth home](/images/misc/heat-pump-hot-water-unit-installed-beside-a-perth-.webp)

### Heat Pump Hot Water Systems

High-efficiency heat pump hot water, STC rebate-eligible, cutting the roughly 25% of energy bills used to heat water.

[Heat Pump Hot Water Systems →](/heat-pump-hot-water/)

![Emergency plumber working on a failed hot water unit at a Perth home](/images/misc/perth-plumber-kneeling-beside-a-failed-hot-water-u.webp)

### 24/7 Emergency Hot Water Repairs

Rapid-response 24/7 dispatch for urgent hot water failures, burst tanks and major leaks, metro-wide and same day.

[24/7 Emergency Hot Water Repairs →](/emergency-hot-water-repairs/)

![](/images/hero/licensed-perth-plumber-in-work-polo-finishing-a-ho.webp)

24/7 emergency call-outs available

## Ready to book electric hot water?

Instantaneous and storage electric hot water, single and dual element, off-peak ready, installed and repaired across Perth. Free upfront quote, no obligation.

Get a Free Quote

[/contact/ →](/contact/)

 

call 08 6243 6734

[tel:+61862436734 →](tel:+61862436734)

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