Gas hot water • Natural gas & LPG models • Australia-wide delivery

GAS HOT WATER SYSTEMS

Shop gas hot water systems online with Hot Water Outlet. Compare gas hot water units from trusted brands, review flow rates, gas type, household suitability, controller options and product specifications, then choose the right instant gas system for your home, rental property, renovation or replacement project.

Why customers choose Hot Water Outlet

Shop hot water systems, valves, fittings, pumps, filters, and accessories online with clear product details, competitive pricing, helpful support, and delivery to eligible Australian postcodes.

Build Your Hot Water Order

Choose your hot water system first, then add the valves, pipework and accessories needed to complete the setup. Hot Water Outlet makes it easier to compare products, match common parts and order everything online in one place.

01

Choose Your Hot Water System

Select the right heater for your property, including electric hot water systems, heat pump hot water systems, instant gas hot water systems and gas storage hot water units.

Compare tank sizes, flow rates, energy types, gas types, household suitability, dimensions, connection points and trusted hot water brands before you order.

02

Add the Valves You Need

Choose common hot water valves and safety components such as tempering valves, pressure relief valves, duo valves, non-return valves and related valve accessories.

03

Add Pipework & Accessories

Complete your order with hot water pipework, fittings and connection accessories for electric, gas, instant and heat pump hot water system setups.

27 products
Sale
Rinnai B16 LPG Gas Hot Water System - Installed Today
Rinnai B16 LPG Gas Hot Water System - Installed Today
Rinnai Infinity B16 LPG Gas Hot Water System
from $909.00 Regular price $1,149.00 Save $240
Sale
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem 16 LPG Gas Hot Water System
from $849.00 Regular price $1,049.00 Save $200
Sale
Rinnai B20 Natural Gas Hot Water System - Installed Today
Rinnai B16 Natural Gas Hot Water System - Installed Today
Rinnai Infinity B20 Natural Gas Hot Water System
from $1,049.00 Regular price $1,299.00 Save $250
Sale
Rinnai B26 Natural Gas Hot Water System - Installed Today
Rinnai B26 Natural Gas Hot Water System - Installed Today
Rinnai Infinity B26 Natural Gas Hot Water System
from $1,059.00 Regular price $1,299.00 Save $240
Sale
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem 16 Natural Gas Hot Water System
from $849.00 Regular price $1,049.00 Save $200
Sale
Rinnai B16 Natural Gas Hot Water System - Installed Today
Rinnai B16 Natural Gas Hot Water System - Installed Today
Rinnai Infinity B16 Natural Gas Hot Water System
from $909.00 Regular price $1,149.00 Save $240
Sale
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem Metro 26 Natural Gas Hot Water System - Installed Today
Rheem 20 Natural Gas Hot Water System
from $929.00 Regular price $1,149.00 Save $220
Sale
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem 20 LPG Gas Hot Water System - Installed Today
Rheem 20 LPG Gas Hot Water System
from $929.00 Regular price $1,149.00 Save $220
Sale
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem 26 Natural Gas Hot Water System
from $949.00 Regular price $1,199.00 Save $250
Sale
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem Metro 26 LPG Gas Hot Water System - Installed Today
Rheem 26 LPG Gas Hot Water System
from $949.00 Regular price $1,199.00 Save $250

Gas Hot Water Systems

Shop gas hot water systems online from Hot Water Outlet, with fast delivery across Australia and same day delivery available in select metro areas on eligible orders. This collection brings together gas continuous flow hot water systems, gas storage hot water systems, natural gas units, LPG units, valves, fittings, pipework, connection parts, spare parts and hot water accessories for homes, rentals, renovations and trade supply orders.

Whether you are replacing an old gas hot water system, comparing continuous flow and storage options, matching an existing model, choosing between natural gas and LPG, or ordering the valves and fittings needed for a hot water changeover, Hot Water Outlet makes it easier to shop gas hot water products in one place.

Buy Gas Hot Water Systems Online

Gas hot water systems are a popular choice for Australian homes with access to natural gas or LPG. They can provide reliable hot water for everyday household use and are available in different styles, including continuous flow systems and storage gas hot water systems.

This collection may include:

Gas continuous flow hot water systems
Gas storage hot water systems
Natural gas hot water systems
LPG hot water systems
External gas hot water units
Compact gas hot water systems
High flow gas hot water systems
Gas hot water spare parts
Tempering valves
Pressure limiting valves
Expansion control valves
PTR valves
Isolation valves
Hot water connection kits
Pipework and fittings
Hot water accessories

Fast Gas Hot Water Delivery Across Australia

Hot Water Outlet supplies gas hot water systems, parts and accessories across Australia, with fast dispatch available on eligible stocked products. Same day delivery may be available in select metro areas depending on stock, order time, product size and delivery location.

This is useful when an old gas hot water unit has failed, a replacement system is needed quickly, or a valve, fitting, connection part or spare component is holding up a hot water order.

Choosing the Right Gas Hot Water System

Before ordering a gas hot water system, check the existing unit and compare the product specifications carefully. Gas hot water systems can vary by fuel type, flow rate, storage capacity, dimensions, water pressure rating, connection layout and power requirements.

Check these details before buying:

Gas type, either natural gas or LPG
Brand and model number of the existing system
System type
Flow rate in L/min for continuous flow units
Storage capacity in litres for gas storage systems
Water pressure rating in kPa
Hot and cold water connection locations
Gas connection size and location
Inlet and outlet connection sizes
External, outdoor or approved location suitability
Power requirements where relevant
Required valves and fittings
Available space for the unit
Household hot water demand
Delivery access for larger products
Spare part compatibility

Natural gas and LPG models are not the same. Always choose the correct gas type before ordering.

Gas Continuous Flow Hot Water Systems

Gas continuous flow hot water systems heat water as it passes through the unit, rather than storing hot water in a tank. They are commonly selected by customers looking for a compact gas hot water option and are usually compared by flow rate in L/min.

A gas continuous flow system may suit:

Homes with natural gas or LPG supply
Customers wanting a compact hot water unit
Properties replacing an existing continuous flow system
Households comparing flow rate options
Outdoor hot water unit locations
Renovation and replacement projects
Trade supply orders

When comparing continuous flow gas hot water systems, check the flow rate, gas type, dimensions, connection layout, temperature setting, minimum water pressure and product specifications.

Gas Storage Hot Water Systems

Gas storage hot water systems heat and store water inside a tank, ready for use throughout the day. They are usually compared by storage capacity in litres, recovery rate, gas type, dimensions, pressure rating and connection positions.

A gas storage system may suit:

Homes replacing an existing gas storage tank
Properties with regular daily hot water demand
Customers who prefer stored hot water
Rental property hot water supply
Family homes
Trade and maintenance supply orders

The right gas storage size depends on household hot water use, number of people, number of bathrooms, shower habits, recovery needs and available space.

Natural Gas and LPG Hot Water Systems

Gas hot water systems must be matched to the correct fuel type.

Natural gas hot water systems are designed for properties connected to mains natural gas. LPG hot water systems are designed for bottled gas supply. These products are not interchangeable unless a specific product is designed or approved for conversion using the correct parts and requirements.

Before ordering, check whether the existing system is natural gas or LPG. This is one of the most important details when choosing a gas hot water replacement.

Gas Hot Water Parts, Valves and Accessories

A gas hot water order may require more than the main unit. Valves, fittings, pipework and accessories can be needed to suit the system, manage water pressure, control outlet temperature and match the connection layout.

Common products used with gas hot water systems include:

Tempering valves
PTR valves for gas storage systems
Pressure limiting valves
Expansion control valves
Isolation valves
Non-return valves
Duo valves
Hot water connection kits
Copper connections
Braided connections where suitable
Unions and adaptors
Drain cocks
Replacement parts
Maintenance accessories

Ordering compatible hot water parts with the system can help make sure the right products are ready when needed.

Gas Hot Water Compared With Electric and Heat Pump Systems

Gas, electric and heat pump hot water systems all suit different properties.

Gas hot water systems may suit homes with natural gas or LPG supply, especially where a gas replacement system is already in place. Electric storage systems may suit properties without gas or customers looking for a straightforward electric tank replacement. Heat pump systems may suit customers comparing energy efficient storage hot water options where space, airflow and operating requirements are suitable.

The best choice depends on the property, fuel supply, household demand, available space, budget, water pressure and product specifications.

Gas Hot Water for Homes, Rentals and Trade Supply

Hot Water Outlet supplies gas hot water systems and related products for homeowners, property managers, builders, maintenance contractors and trade customers across Australia. This collection is designed for customers who want to order gas hot water systems, valves, fittings and spare parts quickly without searching through general plumbing catalogues.

This collection is suitable for:

Home hot water replacement
Rental property maintenance
Natural gas hot water supply
LPG hot water supply
Gas continuous flow replacements
Gas storage system replacements
Renovation projects
Trade supply orders
Valve and fitting orders
Spare part replacement
General hot water maintenance
Emergency replacement planning

Why Buy Gas Hot Water Systems From Hot Water Outlet?

Hot Water Outlet focuses on hot water supply, making it easier to shop for gas hot water systems, valves, fittings, spare parts and accessories in one place. Customers can compare product details, check important specifications and order hot water products online with fast delivery options across Australia.

Shop with Hot Water Outlet for:

Gas hot water systems and parts
Fast delivery across Australia
Same day delivery in select metro areas on eligible orders
Natural gas and LPG options where available
Continuous flow and storage gas systems
Hot water valves, fittings and connection parts
Spare parts and accessories
Products for homes, rentals and trade supply
Clear product specifications
Easy online ordering

Gas Hot Water System Questions

What gas hot water system do I need?

The right gas hot water system depends on your household hot water demand, available gas type, space, water pressure, preferred system style and the specifications of your existing unit. Continuous flow systems are usually compared by flow rate in L/min, while gas storage systems are compared by storage capacity in litres.

What is the difference between gas continuous flow and gas storage hot water?

Gas continuous flow systems heat water as it passes through the unit. Gas storage systems heat and store water inside a tank ready for use. The right choice depends on available space, household demand, existing system type, gas supply and product specifications.

What is the difference between natural gas and LPG hot water systems?

Natural gas hot water systems are designed for mains natural gas. LPG hot water systems are designed for bottled gas. They are not the same, so always check the gas type before ordering.

Are gas hot water systems sized by litres?

Gas storage hot water systems are usually sized by tank capacity in litres. Gas continuous flow systems are usually compared by flow rate in L/min because they heat water as it flows through the unit rather than storing it in a tank.

Can I replace my old gas hot water system with the same type?

In many cases, replacing with the same type can be practical, but you should still compare the gas type, model, dimensions, connection positions, flow rate or capacity, kPa rating and product requirements before ordering.

Can I swap a natural gas system for an LPG system?

Only if the correct LPG product is selected and the property has a suitable LPG supply. Natural gas and LPG systems are different, so do not assume one can replace the other without checking the product specifications carefully.

Do gas hot water systems need power?

Some gas hot water systems require electrical power for controls, ignition or operation, while others may have different requirements depending on the model. Check the product specifications before ordering.

What valves are used with gas hot water systems?

Common valves may include tempering valves, PTR valves for storage systems, pressure limiting valves, expansion control valves, isolation valves and non-return valves. The correct parts depend on the system specifications and water pressure requirements.

What kPa rating should I check for a gas hot water system?

Check the kPa rating listed on the gas hot water system and any matching valves or fittings. Pressure ratings need to suit the system and connected components.

Can I buy gas hot water spare parts online?

Yes. Hot Water Outlet sells hot water spare parts, valves, fittings, connections and accessories for a wide range of gas hot water system needs.

What should I check before ordering a gas hot water replacement?

Check the current brand, model, gas type, flow rate or storage capacity, dimensions, kPa rating, connection positions, power requirements, product location and whether any valves, fittings or accessories are also required.

Do you deliver gas hot water systems Australia wide?

Yes. Hot Water Outlet supplies gas hot water systems, parts and accessories across Australia, with delivery options depending on stock, product size and delivery location.

Is same day delivery available for gas hot water systems?

Same day delivery may be available in select metro areas on eligible gas hot water systems and orders. Availability depends on stock, order time, product size and delivery location.

Order Gas Hot Water Systems Online

Shop gas hot water systems online with Hot Water Outlet and get the products you need delivered fast. From natural gas and LPG continuous flow systems to gas storage units, valves, pipework, fittings, connection parts and hot water spares, Hot Water Outlet makes it easier to buy gas hot water products across Australia.

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Gas Storage Hot Water System FAQs

Common questions about choosing, comparing and ordering gas storage hot water systems online with Hot Water Outlet. We sell supply-only gas storage hot water products and can help organise quotes from reputable installers where appropriate.

Can I buy a gas storage hot water system supply only?

Yes. Hot Water Outlet sells gas storage hot water systems as supply-only products. This means the listed product price is for the gas storage unit only and does not include installation, valves, old unit removal, disposal, gas fitting, plumbing changes, electrical work, access equipment or compliance upgrades unless those items are clearly listed separately.

What is a gas storage hot water system?

A gas storage hot water system heats and stores hot water in a tank, ready for use throughout the home. Unlike continuous flow gas hot water, which heats water as it passes through the unit, a gas storage system keeps a set volume of hot water available for showers, taps, laundry and everyday household use.

What size gas storage hot water system do I need?

The right size depends on household size, shower habits, bathroom count and how much hot water your home uses during busy periods. Smaller households may suit compact gas storage models, while larger homes may need a larger tank or a system with stronger recovery performance. A licensed installer should confirm the best size for your property before installation.

What is the difference between natural gas and LPG gas storage hot water?

Natural gas and LPG models are not interchangeable unless the manufacturer specifically allows conversion by a qualified person. You need to choose the correct gas type for your property, as using the wrong gas type can create performance, safety and compliance issues.

Can I replace my old gas storage hot water system with the same type?

In many homes, replacing like-for-like with another gas storage hot water system can be a practical option. Suitability still depends on the existing gas supply, flue or outdoor location, plumbing layout, available space, valves, access and current compliance requirements.

Are gas storage hot water systems suitable for outdoor use?

Many gas storage hot water systems are designed for external outdoor installation, but suitability depends on the exact model. Always check whether the unit is rated for outdoor use and confirm required clearances, ventilation and location requirements with a licensed gas fitter.

Can a gas storage hot water system be installed indoors?

Only models specifically designed for internal or flued installation should be used indoors. External gas storage units should not be installed inside a home, garage, cupboard or enclosed area unless the manufacturer clearly states the model is suitable and the installation is completed to the required gas and ventilation standards.

Do gas storage hot water systems need electricity?

Some gas storage hot water systems may operate with a standing pilot, while others may use electronic ignition, controls or powered components. Electrical requirements vary by model, so it is important to check the product specifications before ordering and confirm site requirements with the licensed installer.

Are gas storage hot water systems good for high hot water demand?

Gas storage systems can be a strong option for households that want stored hot water with faster recovery than many standard electric storage systems. Performance depends on tank size, burner output, recovery rate and how much hot water is used during peak times.

Do I need new valves, pipework or fittings?

Some gas storage replacements may require new valves, pipework, tempering valves, gas fittings or other accessories depending on the existing setup and current compliance requirements. Hot Water Outlet sells hot water valves, pipework and fittings online, but your licensed installer should confirm exactly what is required for your property.

Does the product price include old system removal or disposal?

No. Product pricing on Hot Water Outlet is for the product only unless clearly stated otherwise. Old system removal, disposal, access equipment, gas work, plumbing changes, electrical work and compliance upgrades should be quoted separately by the installer or licensed tradesperson completing the work.

What should I compare before buying a gas storage hot water system?

Compare tank size, gas type, recovery rate, indoor or outdoor suitability, dimensions, warranty details, connection locations, clearance requirements and whether the model suits your household’s hot water demand. You should also confirm access, gas supply, plumbing layout and local installer availability before purchase.