Hot Water Systems Sydney
Repairs, replacements, and installs from NSW licensed plumbers.
No hot water this morning, or a tired old unit finally giving up? Apex diagnoses the fault first, then gives you clear repair or replacement options across gas, electric, heat pump and continuous flow systems. Honest advice, fixed quotes, same-day help where available.
- Licence 306733C
- 26+ Years
- 122+ 5-Star Reviews
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Replace
Compare Hot Water Systems And Prices
If you are replacing, the four common choices in Sydney are electric, gas, continuous flow and heat pump. Each trades off upfront price, running cost and lifespan, and people often ask how long does a hot water system last, so the table shows typical years by type. The ranges are indicative Sydney figures to frame the conversation. We confirm exact hot water system prices for your property before any work.
A quick plain-English guide before the numbers. An electric hot water system is the cheapest to buy but usually the dearest to run. A gas hot water system in storage form sits in the middle on both. A continuous flow hot water system (also called instantaneous) heats water on demand so it does not run out, and tends to last longer. A heat pump hot water system costs more upfront but runs on a fraction of the energy and attracts a rebate. A solar hot water system and a traditional storage hot water system are also options we can quote if they suit your roof and household.
| System | Running cost | Indicative install price range | Typical lifespan |
|---|---|---|---|
| Electric storage Electric hot water system | Higher | $1,300 to $2,200 supply and install | 8 to 12 years |
| Gas storage Gas hot water system | Moderate | $1,600 to $2,600 supply and install | 8 to 12 years |
| Gas continuous flow Continuous flow hot water system | Low to moderate | $2,300 to $3,350 supply and install | 15 to 20 years |
| Heat pump Heat pump hot water system | Lowest | $2,000 to $4,000 after rebate | 10 to 15 years |
What size hot water system do I need?
Sizing is about your busiest hour, not just litres. As a rough guide, a small household may suit a smaller storage tank or a compact continuous flow unit, while a large family with simultaneous showers needs more capacity or a higher flow rate. We size it to how you actually use hot water so you neither run out nor pay to heat water you never touch.
Repair
No Hot Water This Morning?
If the shower ran cold, do not assume the whole unit is finished. Apex handles hot water system repairs Sydney wide, and many faults on a hot water heater are a same-day repair, not a replacement. Tick any symptom below, then call and we will talk you through it before we arrive.
Symptom checklist
The more of these you can tell us on the phone, the faster we diagnose it. Most point to a repairable part rather than a dead tank.
- No hot water at any tap
- Hot water runs out too quickly
- Pilot light will not stay lit (gas)
- Banging, rumbling or noisy tank
- Error code or fault light showing
- Water lukewarm or not hot enough
- A leaking hot water system or pooling water
- Tripping the switchboard (electric)
- Rusty water or a rusty, ageing unit
- Relief valve constantly dripping
A dead element, a failed thermostat, a stuck valve or a pilot fault are common no-hot-water causes we can often repair on the first visit. If the fault is a leak that is spreading or a total loss of hot water outside business hours, our emergency plumber in Sydney can attend, and any gas line work is handled by our licensed gas plumber.
Decision guide
Repair Or Replace Your Hot Water System
The honest answer depends on the unit’s age, the fault, and the cost of the part against a new system. We diagnose first, tell you both options, and never push a replacement when a repair is the sensible call. Here is the rule of thumb we use on site.
Lean repair
- The unit is under about 8 years old
- It is a single failed part (element, thermostat, valve, ignition)
- No corrosion or leaking from the tank body
- The repair cost is well below a replacement
- The system otherwise suits your household size
Lean repair
Signs your hot water system needs replacing:
- The tank itself is leaking or rusted through
- The unit is 10 to 15+ years old
- Repairs are stacking up or parts are obsolete
- It never keeps up with the household anymore
- Running costs are high and a rebate offsets an upgrade
Same-day
Same Day Hot Water Replacement When It Counts
A cold house with kids or a business that needs hot water cannot wait a week. For common systems we can access, Apex aims to complete a same day hot water replacement, so you are not left cold while parts are ordered. When same-day is not possible, we tell you honestly and book the earliest firm time.
Fixed quote before any hot water system installation in Sydney begins
Old unit removed and disposed of properly
Compliant install by a licensed plumber, gas or electrical as needed
Clear handover on warranty, operation and servicing
Who we help
Hot Water For Homes, Strata And Business
The same licensed hot water plumber Sydney households rely on also looks after strata blocks and commercial sites, so whether it is one shower or a whole building, the diagnosis-first approach is the same. It is one hot water service Sydney homes and businesses can count on.
Homes
No hot water, a leaking tank, poor temperature or an ageing unit, repaired or replaced with respect for your home and your routine.
Strata
We work with owners, tenants and strata managers, explain shared-system responsibility clearly, and coordinate access for units and common systems.
Business
A commercial hot water system outage can stop a cafe, salon or venue trading. We prioritise these to keep downtime and lost revenue short.
How it works
Our Diagnosis-First Hot Water Process
A clear sequence from the first call to a working system, so you always know the fault, the options and the price before we proceed.
1. Phone triage
We take your symptoms, gauge urgency, and give first steps so a small leak does not become water damage.
2. On-site diagnosis
We test the real cause, element, thermostat, valve, pilot, gas supply or the tank itself, not just the symptom.
3. Repair or replace options
You get both paths in plain terms, with a fixed quote, and choose what suits your budget and timeframe.
4. Sizing and selection
If replacing, we size the system to your household and recommend a suitable gas, electric, heat pump or solar option.
5. Compliant install
Licensed installation with the gas and electrical work done to standard, old unit removed and disposed of.
6. Test and handover
We test temperature and pressure, then walk you through warranty, operation and simple maintenance.
Rebates
The NSW Hot Water Rebate, Explained Simply
Switching an old electric or gas unit to an energy-efficient heat pump or solar system can attract a NSW hot water rebate under the state’s Energy Savings Scheme. It is applied as an upfront discount on your quote, not a payment you claim back later.
The NSW Hot Water Rebate, Explained Simply
Under the NSW Government’s Household Energy Saving Upgrades program, an accredited installer includes the discount directly in your quote for an eligible heat pump or solar hot water system. It can be combined with the federal Small-scale Renewable Energy Scheme (STCs) for a larger saving. Eligible systems need a minimum 5-year warranty, and the paperwork is signed before installation begins.
$405 to $675
Typical NSW incentive, electric to heat pump*
Upfront
Applied to your quote, not claimed back
Stackable
With federal STCs where eligible
*Indicative NSW Government figure. Actual value depends on the system, household and current scheme rules. Verify at the official NSW Climate and Energy Action site.
Reviews
What Sydney Customers Say About Our Hot Water Service
Answers
Hot Water Systems FAQs
Should I repair or replace my hot water system?
Why did my hot water stop in winter?
How long does a hot water replacement take?
What size hot water system do I need?
What is the most efficient hot water system?
How much does it cost to replace a hot water system?
Can I get a NSW rebate on a new hot water system?
Do you charge a call out fee?
Do you handle emergency hot water repairs?
Do you offer hot water repairs near me in Sydney?
Need Hot Water Sorted In Sydney?
Licensed, diagnosis-first, and honest about repair versus replacement. Call Apex and speak to a plumber who can start helping straight away.
