Gas fireplaces have become a staple in Australian homes, providing an efficient and stylish way to heat living spaces. However, choosing the best gas fireplace requires an understanding of the technical aspects to ensure optimal performance and suitability for your space.
What makes the best gas fireplace?
- Effective heat output vs. room size.
- Cost effective energy efficiency.
- Suitable gas type for fuel.
- Proper ventilation for safety.
- Space efficient design & easy installation.
- Gas fireplace features & controls.
- Build quality & material make.
- Fireplace safety features.
Here, we delve into the considerations to help you make an informed decision on the best gas fireplace for you.
This guide should be used to provide direction to finding the best gas fireplace for your needs; however, always consult professional advice specific to your installation and requirements.

1. Gas Fireplace Heat Output and Room Size
The heat output of gas fireplaces is measured in kilowatts (kW), and selecting the right output depends on your room size:
- Small Rooms (<30 m2): 2-5 kW
- Medium Rooms (30-50 m2): 5-8 kW
- Large Rooms (>50 m2): 8-15 kW
The key is to match the fireplace's output with your room's heating requirements. Overheating can lead to discomfort, while underheating can strain the unit and increase energy costs.
Factors Influencing Heat Output:
- Type of Fireplace: Freestanding, in-built, or wall-mounted designs vary in their efficiency and heat distribution.
- Fuel Type: Natural gas or LPG (Liquid Petroleum Gas) can slightly affect the efficiency and output.
- Efficiency Rating: Higher efficiency models convert more fuel into heat, reducing wastage.

2. Efficiency Rating Of The Gas Fireplace Model
Efficiency is a critical factor for cost-effective and environmentally friendly heating. Look for fireplaces with high star ratings (5–6 stars). A higher star rating means more heat is converted from fuel, reducing waste and lowering running costs. Room-sealed models, which use external air for combustion, are typically the most efficient.
What Influences Efficiency Ratings
1. Flue/Venting Type:
- Direct Vent Fireplaces: High efficiency (70-85%) as they use external air for combustion, reducing heat loss.
- B-Vent/Conventional Flue: Lower efficiency (50-70%) due to significant heat loss through the chimney.
- Ventless/Flueless Models: Efficiency ratings up to 99% since no heat is lost via venting, but these are subject to strict regulations.
2. Heat Transfer Mechanism:
- Radiant Heat: Direct heat from flames to objects in the room is highly efficient.
- Convection Heat: Uses fans to circulate warm air but may experience slight losses during distribution.
3. Standby Losses:
- Pilot lights and minimal heat loss during idle periods reduce overall efficiency.
4. For gas fires in Australia
They are tested for energy consumption based on Mj/h (megajoules per hour of gas used). A cost-effective gas fire ideally should be in the low range, around 20 to 30Mj/h.
Efficiency ratings for gas fireplaces are calculated based on heat input, output, and losses due to combustion and venting. When choosing a fireplace, prioritise models with high efficiency ratings (above 70%) for cost savings, reduced environmental impact, and effective heating.
Always verify ratings with certifications like the Australian Gas Association (AGA) or EnerGuide to ensure accuracy.

3. Type Of Gas Fuel For The Fireplace
Australian gas fireplaces can run on:
- Natural Gas: A cost-effective and readily available option for homes with existing gas connections.
- LPG (Liquid Petroleum Gas): Ideal for properties without natural gas access. While slightly more expensive, LPG offers portability and versatility.
Ensure the fireplace you choose is compatible with your home's gas supply & use certified installers.

4. Fireplace Ventilation Options
Proper ventilation is essential for safety and efficiency. Gas fireplaces are categorised into flued and flueless models:
- Flued Fireplaces: These vent exhaust gases outdoors, ensuring cleaner indoor air. Subtypes include:
- Direct Vent (Balanced Flue): Uses external air for combustion and vents through a wall or roof, offering high efficiency and safety. Legend DV36 gas fireplaces are a perfect option for this type.
- Conventional Flue: Draws air from the room for combustion and vents through a chimney. While less efficient, they are ideal for traditional setups.
- Flueless Fireplaces: Do not require a chimney or vent but are subject to stricter regulations in Australia due to safety concerns. Ensure your home meets ventilation requirements if you opt for this type.

5. Design & Installation
Technical design considerations include:
- Freestanding Models: Easy to install and highly efficient, they can be placed in almost any room.
- In-Built Models: Installed into existing cavities or chimneys for a seamless look.
- Wall-Mounted Models: Sleek and space-saving, ideal for modern homes.
- Outdoor Models: Built with weather-resistant materials for alfresco areas.
Professional installation is often required by law to ensure compliance with Australian standards. For best practice installation, always consult a professional and certified installer. If you're looking for design inspiration, read our guide on livingroom fireplace design ideas.
6. Features & Controls
Modern gas fireplaces offer advanced technical features to enhance functionality and convenience. The best designed fireplaces will feature:
- Thermostatic Control: Maintains a consistent room temperature automatically.
- Smart and Remote Controls: Allows operation via smartphone apps or remotes.
- Timer Settings: Enables pre-scheduled heating.
- Zoned Heating: Directs heat to specific areas, maximising efficiency.

7. Materials and Build Quality
Invest in fireplaces made from durable materials, such as high-grade steel or cast iron. Quality construction not only ensures longevity but also contributes to heat retention and efficient operation.
8. Safety Features
Check if the fireplace is equipped with safety mechanisms such as
- Flame Failure Devices (FFD): Automatically shuts off the gas supply if the flame extinguishes.
- Glass Fronts: Prevents accidental burns, particularly in homes with children.
- Oxygen Depletion Sensors (ODS): Monitors air quality and shuts off the unit if oxygen levels drop.
When choosing a gas fireplace, prioritise models equipped with advanced safety features like flame failure devices, oxygen depletion sensors, and cool-touch glass. These features, combined with proper installation and maintenance, will ensure safe and worry-free operation in your home.
Always consult a professional installer to verify compliance with Australian safety standards.

Top 3 Gas Fireplaces at Schots
Where do you buy the best gas fireplaces?
Schots have a quality range of gas fireplaces designed for optimal energy efficiency and heat output. Schots is a family owned business operating for over 50 years since 1978 with over 40 expert team members that can help find you the best gas fireplace for your space.
1. Legend Nexus DV36 Gas Log Fire
Price: $3,949 | View at Schots
The Legend Nexus DV36 represents the pinnacle of in-built gas fireplace technology in the Schots range, combining the latest direct vent engineering with a stunning, wide glass viewing area.
Features
- Direct vent (balanced flue) sealed system with horizontal or vertical fluing options
- Heat output of 5.9kW (27.8MJ) covering up to 100m²
- Shallow 400mm firebox depth with a wide, tall glass viewing panel
- Ribbed ceramic fibre panels lining the firebox interior
- Zero clearance installation capability
- AGA-approved safety screen included
- Optional remote control with thermostat (sold separately)
- Steel construction, 94cm W × 37cm D × 87cm H, 88kg
Advantages
- The sealed direct vent system draws combustion air from outside rather than from the room, making it far more efficient and safer than open-flue systems
- Horizontal or vertical fluing gives far greater installation flexibility compared to traditional chimney-dependent fireplaces
- The shallow 400mm depth means it suits both new builds and retrofit projects where wall space is at a premium
- Ceramic fibre panels boost radiant heat output, delivering more warmth per unit of gas consumed
Benefits
- You can install this fireplace in virtually any room, even those without an existing chimney, giving you true freedom in how you design your living space
- The sealed system means no cold draughts, no loss of conditioned air, and no compromise to indoor air quality, keeping your home healthier and more comfortable all winter
- Efficient gas consumption translates directly into lower energy bills, with a single unit capable of warming a full 100m² open-plan space
- The wide glass viewing area delivers a genuine visual showpiece, real flickering flames on demand, simply by flicking a switch
2. Legend DV36L Gas Log Fire Series 3
Price: $3,949 | View at Schots
The DV36L Series 3 is the established workhorse of the Legend range, a direct vent gas log fire that combines proven reliability with high-end aesthetics, and is available in a 2-speed fan-forced version for enhanced heat distribution.
Features
- Direct vent balanced flue system, horizontal or vertical installation
- Heating capacity of up to 100m²
- Ribbed ceramic fibre panels around the firebox for increased thermal mass
- Heavy-duty stainless steel construction
- 2-speed fan option for active heat circulation throughout the room
- Available in black finish
- Zero clearance design for flush installation
- AGA-approved safety screen
Advantages
- The ribbed ceramic fibre surround stores and radiates heat more effectively than a bare steel firebox, meaning warmth continues to radiate even after the flame is turned down
- The 2-speed fan-forced option allows the unit to function as both a radiant and convection heater, something most competitors in this price range cannot offer
- Stainless steel construction is more resistant to the thermal expansion and contraction cycles that can cause lesser materials to warp or corrode over years of use
- Zero clearance installation allows it to sit directly against combustible building materials, reducing building costs and simplifying the installation process
Benefits
- The combination of radiant and fan-forced heat means every corner of the room reaches a comfortable temperature, eliminating cold spots that are common with radiant-only heaters
- Superior build quality means this fireplace will perform reliably for decades, protecting your investment and avoiding costly repair or replacement
- The sleek black finish integrates beautifully into both contemporary and traditional interiors, serving as a design centrepiece rather than simply a utility appliance
- Real log-effect flames provide an authentic, calming ambience that makes your living room the natural gathering place for family and guests
3. Dimplex Wonderfire AF18C Gas Fire
Price: $2,299 | View at Schots
The Dimplex Wonderfire AF18C is a versatile, freestanding gas burner that can be installed into an existing fireplace opening ,making it the ideal solution for homeowners who want the warmth and atmosphere of a gas fire without a full renovation.
Features
- Sophisticated ceramic venturi burner for complete, clean combustion
- Realistic coal fuel-bed with an operating temperature of 1,200°C at the base
- Flame failure device (FFD) for automatic gas cut-off if the flame extinguishes
- Compatible with existing grates or included free-standing grate
- Covers living spaces up to 45m²
- Requires a standard chimney or flue, no specialist sealed system needed
- Natural gas operation
- Dimensions: 650mm W × 300mm D × 805mm H
Advantages
- The ceramic venturi burner pre-mixes gas and air in precise proportions, achieving a level of combustion efficiency and visual realism that conventional burners cannot match
- Because it fits directly into an existing fireplace opening, the Wonderfire requires no structural modification to your home, dramatically reducing installation time and cost
- The automatic flame failure device is an important safety distinction: it removes the risk of unburnt gas accumulating if the pilot or flame fails unexpectedly
- At a significantly lower price point than in-built models, it delivers a comparable aesthetic experience for smaller rooms
Benefits
- If you already have a traditional fireplace that you no longer use with wood or coal, the Wonderfire transforms it into a clean, convenient gas fire in a single appointment, no dust, no mess, no major works
- The ultra-realistic coal glow at 1,200°C creates an atmosphere indistinguishable from a real fire, giving your room warmth and character without the labour of tending a solid-fuel fire
- The built-in safety shut-off provides peace of mind, particularly important for families with young children or in homes where the fire may occasionally be left unattended
- Its compact footprint and moderate heat output make it perfectly suited to townhouses, apartments, and older homes where a larger built-in unit would be impractical
10 Types Of Gas Fireplaces
There are many types of gas fireplaces to choose from. To find the best type that will meet your technical specifications and space, you must have a high-level understanding of the unit's common features, limitations, and requirements. From there, you must consult a professional & experienced retailer from which you can choose from the following types:
1. Direct Vent Gas Fireplaces
- How It Works: These fireplaces use a sealed combustion system, drawing air for combustion from outside and expelling exhaust gases through a coaxial pipe (a pipe within a pipe).
- Key Features: Highly efficient (up to 85%). Does not impact indoor air quality since they don't draw air from inside the home. Flexible installation options, as they can vent through walls or roofs.
- Best For: Homes looking for efficient heating and improved air quality.
- Example Use: Modern homes with no existing chimney.
2. B-Vent (Natural Vent) Gas Fireplaces
- How It Works: These fireplaces vent exhaust through a vertical flue, typically a chimney, using indoor air for combustion.
- Key Features: Lower efficiency (50-70%) compared to direct vent models. Requires an existing chimney or a vertical flue to function. Offers a more traditional fireplace look.
- Best For: Homes with an existing chimney or those looking for a traditional aesthetic.
- Example Use: Renovating an older home with an existing masonry chimney.
3. Ventless (Flueless) Gas Fireplaces
- How It Works: This type of fireplace does not require a chimney or vent. It burns gas cleanly, allowing most of the heat and combustion by-products to stay within the room.
- Key Features: High efficiency (up to 99%) as no heat is lost through venting. Requires adequate room ventilation to prevent moisture build up and maintain air quality. Not permitted in all regions due to strict safety regulations (including some parts of Australia).
- Best For: Apartments or homes without chimney or flue access.
- Example Use: Small spaces like bedrooms or offices (if local regulations permit).
4. Freestanding Gas Fireplaces
- How It Works: Resembles a traditional wood-burning stove but runs on gas. It can be direct vent, B-vent, or ventless, depending on the model.
- Key Features: Can be installed almost anywhere. Provides excellent heating with a rustic or contemporary appearance. Easy to relocate compared to built-in models.
- Best For: Homes looking for flexibility and efficient heating.
- Example Use: Heating large open-plan spaces.
5. Insert Gas Fireplaces
- How It Works: Inserts are designed to fit into an existing fireplace cavity, converting it from wood-burning to gas.
- Key Features: Direct vent or B-vent options available. Easy retrofit solution for old, inefficient fireplaces. Modern models include blowers for better heat distribution.
- Best For: Renovating traditional wood-burning fireplaces.
- Example Use: Updating a classic fireplace in a living room.
6. Wall-Mounted Gas Fireplaces
- How It Works: Mounted on or recessed into a wall, these units provide heating and act as a decorative feature.
- Key Features: Sleek, modern design. Typically ventless or direct vent. Space-saving and ideal for small areas.
- Best For: Contemporary homes and apartments.
- Example Use: A stylish addition to a living or dining room.
7. Built-In Gas Fireplaces
- How It Works: These are fully integrated into a wall or structure, designed as a permanent fixture.
- Key Features: Requires professional installation. Available in direct vent, B-vent, or ventless configurations. Can be customised with decorative surrounds and mantels.
- Best For: New builds or major renovations.
- Example Use: A feature wall in a lounge or master suite.
8. Outdoor Gas Fireplaces
- How It Works: Specially designed for use in outdoor settings, these units are weather-resistant and often built into patios or outdoor entertaining areas.
- Key Features: Direct vent or ventless options. Often includes stylish features like glass beads or modern surrounds. Creates an inviting atmosphere in alfresco spaces.
- Best For: Outdoor heating and ambience.
- Example Use: A covered patio or garden area.
9. Log-Set Gas Fireplaces
- How It Works: These units replicate the look of a wood-burning fireplace by using ceramic logs placed over gas burners.
- Key Features: Often ventless or B-vent. Primarily decorative with lower heat output. Easy to install into existing fireplaces.
- Best For: Decorative purposes or supplemental heating.
- Example Use: A cosy decorative centrepiece in a rarely used room.
10. High-Performance Gas Fireplaces
- How It Works: These models prioritise heating efficiency and often feature advanced controls and zoned heating capabilities.
- Key Features: High heat output (up to 15 kW or more). Advanced features like thermostatic control, timers, and remote operation. Typically direct vent or sealed combustion.
- Best For: Large homes or open-plan spaces needing a primary heat source.
- Example Use: Efficiently heating a large family room or open living area.
Conclusion
Selecting the best gas fireplace for your home involves evaluating technical specifications, including heat output, efficiency, fuel type, and ventilation. By understanding these aspects, you can ensure optimal performance, safety, and comfort for your living space.
For tailored recommendations, consult a professional installer or visit a trusted retailer. With the right fireplace, you can enjoy the perfect balance of warmth, style, and efficiency in your home. If you are also considering a wood burning fireplace, read our comprehensive guide on how to choose the best wood fireplace for detailed information.



