Professional Hot Water System Installation You Can Trust
When your hot water system reaches the end of its life, or when you want to upgrade to a more efficient model, you need an installation team that shows up fast, installs correctly and leaves your home with a fully compliant, safe system.
Gas Experts Melbourne supplies and installs all major hot water system types across Melbourne. Gas storage systems, continuous flow systems, electric hot water systems and solar boosters, we handle everything. We carry commonly needed units on the van, which means same-day supply and installation is available in many cases.
Every installation includes removal and disposal of your old system, full commissioning, a carbon monoxide test (gas systems), a complete safety inspection and a written certificate of compliance. You receive a single, fixed price that covers everything before we start.
Which Hot Water System Is Right for Your Home?
There are several types of hot water systems available in Melbourne homes. Here is a practical guide to help you choose the right one.
Type 1: Gas Storage Hot Water Systems
Gas storage systems heat water in an insulated tank using a gas burner. The tank maintains water at a set temperature and a fresh supply is ready on demand. When the stored hot water is exhausted, you wait for the tank to reheat.
Best for: Homes with moderate hot water demand, homeowners wanting a straightforward and cost-effective system, like-for-like replacements.
Considerations
- Hot water supply is limited to tank capacity
- Standby heat loss the system maintains water temperature 24 hours a day whether or not hot water is being used
Popular brands: Rinnai, Rheem, Dux, Vulcan, Aquamax, Thermann
Type 2: Gas Continuous Flow (Instantaneous) Hot Water Systems
Continuous flow systems heat water on demand. There is no storage tank. Cold water flows through the unit and is heated instantly by a high-output gas burner when a tap is opened. Hot water is available indefinitely and the unit only consumes gas when hot water is actually being drawn.
Best for: Larger households with high or simultaneous hot water demand, homeowners who want unlimited hot water, homes wanting to reduce energy consumption.
Advantages
- Unlimited hot water never run out
- Only heats water when you need it more energy efficient than storage
- Compact no large tank required
- Longer lifespan than storage systems (15 to 20 years)
Considerations
- Higher purchase price than storage systems
- Flow rate must match the unit's heating capacity, multiple simultaneous outlets on a small unit can reduce temperature
Popular brands: Rinnai, Bosch, Rheem, Dux, Paloma
Type 3: Electric Hot Water Systems
Electric storage systems use an electric heating element immersed in the tank to heat water. They are typically cheaper to purchase than gas systems but significantly more expensive to run in Victoria's current electricity pricing environment.
Best for: Homes without a gas connection, properties where gas installation is not feasible, homes that qualify for off-peak tariff pricing.
Advantages
- Lower upfront purchase cost
- Suitable where no gas connection exists
- Off-peak tariffs can reduce running costs
Considerations
- Significantly higher running costs than gas in Victoria
- Not recommended as an upgrade from a gas system unless gas connection is unavailable
Popular brands: Rheem, Dux, Aquamax, Thermann, Stiebel Eltron
Type 4: Solar Hot Water Systems
Solar hot water systems use roof-mounted solar collectors to heat water. A gas or electric booster supplements solar heating on overcast days or during periods of high demand. In Melbourne's climate, solar hot water can deliver significant running cost reductions over a well-maintained gas system.
Best for: Environmentally conscious homeowners, homes with suitable north-facing roof space, homeowners with an existing solar installation looking to expand.
Considerations
- Higher upfront installation cost
- Performance varies with Melbourne's weather
- Booster required for reliable year-round hot water supply
Popular brands: Rheem, Rinnai, Chromagen, Solahart
Advantages
- Lower purchase price than continuous flow
- Simple, proven technology
- Wide range of tank sizes available to match household size
- Can run on natural gas or LPG
How to Choose the Right Hot Water System for Your Melbourne Home
Household Size and Hot Water Demand
The most important factor in choosing a hot water system is matching the system's output to your household's daily hot water usage.
Gas Storage Tank Size Guide
| Household Size | Recommended Tank Size |
|---|---|
| 1 to 2 people | 80 to 125 litres |
| 2 to 3 people | 125 to 170 litres |
| 3 to 4 people | 170 to 250 litres |
| 4 to 5 people | 250 to 315 litres |
| 5+ people | 315 to 400 litres or continuous flow |
For continuous flow systems, the relevant measure is flow rate capacity in litres per minute. We recommend a unit with sufficient capacity for the maximum number of simultaneous hot water outlets in your home.
Gas vs Electric
In Victoria's current energy pricing environment, natural gas is significantly cheaper per unit of energy than grid electricity. For most Melbourne homes with an existing gas connection, a gas hot water system (storage or continuous flow) will deliver lower running costs than an equivalent electric system.
Storage vs Continuous Flow
For households of 4 or more people with high or simultaneous hot water demand, continuous flow is generally the better choice. For smaller households with predictable, sequential demand, a correctly sized gas storage system is cost-effective and straightforward.
Star Rating and Efficiency
Like gas heaters, hot water systems carry an energy efficiency star rating. Higher star ratings indicate greater efficiency. For continuous flow systems in particular, a higher star rating reduces gas consumption significantly over the life of the system.
What's Included in Our Hot Water System Installation
Gas Experts Melbourne installations are complete, end-to-end services. Here is exactly what we include.
Installation
- Removal and responsible disposal of old hot water system
- Supply and installation of new hot water system
- Gas line connection, sealing and pressure testing (gas systems)
- Electrical connection (electric and solar booster systems)
- Cold water inlet and hot water outlet connections
- Pressure reducing valve check and installation if required
- Temperature and pressure relief valve installation and test
- Commissioning startup and confirmation of correct operation
Post-installation
- Carbon monoxide combustion test (gas systems)
- Full safety inspection
- Written completion report
- Certificate of compliance for gas work (gas systems)
- Warranty registration assistance
- Explanation of operation and maintenance requirements
Pre-installation
- Free telephone or on-site assessment to confirm the right system for your household
- Fixed-price quote including supply (where purchasing through us) and full installation
- Confirmation of gas connection and meter suitability (gas systems)
Need a New Hot Water System Today?
Same-day hot water system supply and installation available across Melbourne. We carry commonly needed units on the van. Fixed pricing, old system removed and disposed, full compliance certificate included.
Hot Water System Installation Costs in Melbourne
We provide fixed-price quotes: no hourly rates, no hidden charges.
| System Type | Approximate Supply and Install Cost |
|---|---|
| Gas storage: 125L to 170L | From $650 to $1,100 plus GST |
| Gas storage: 170L to 250L | From $850 to $1,400 plus GST |
| Gas storage: 250L to 400L | From $1,100 to $1,800 plus GST |
| Gas continuous flow: standard residential | From $1,200 to $2,200 plus GST |
| Electric storage: 125L to 250L | From $700 to $1,300 plus GST |
Note: Prices are indicative ranges only. Final pricing depends on the specific system selected, whether labour-only or supply and install, and any additional work required (gas line extensions, PRV installation, etc.). A fixed price is confirmed before any work begins.
Special Offers
- Trade-In Offer $100 off a new hot water system when you trade in your old one.
- Free Home Plumbing Inspection Valued at $150: included with every hot water installation.
- Pensioner Discount 10% off all installations for pension and concession card holders.
Hot Water System Brands We Supply and Install
We supply and install all major hot water system brands available in the Australian market.
If your preferred brand is not listed, call us and we will confirm availability.
Why Melbourne Homeowners Choose Gas Experts Melbourne for Hot Water Installation
