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Best Indoor Gas Heater - Home Gas Fixed Flued Space Heaters: Gas Heating Reviews & Prices

The best indoor gas heater is the one that fits your needs.  To be the best indoor gas heater, it must be sized correctly for your space, be flued or an unflued (portable), and have the features you want possibly including remote control, thermostat, timer and safety features. The best indoor gas heater must also be from one of the quality gas heater manufacturers with a strong warranty.

The best indoor gas heater also needs to be the one with a price that gives you good value for money.

Concerned that what your retailer recommends may not be the best choice for you or your home? 

What size should I buy?

Want to find the best price?

We review gas heater types and prices, comparing the pros and cons of the various gas heating alternatives, to help you make an informed decision...

How to Choose the Best LPG Indoor Gas Heater - Best Natural Gas Heater

How to Choose the Best Indoor LPG Gas Heater - Best Natural Gas Heater

The best LPG indoor gas heater or the best natural gas heater all depend on what suits your needs. There are 5 major decisions to make when you choose a new gas heater.

1.  Should you choose a Portable (Unflued) gas heater or a gas fixed flued heater? 

2.  You must also choose from the sub-group types of gas heaters, including radiant, convectors, radiant-convectors, gas fixed flued heater power flued,  gas fixed flued heater radiant and wall heaters. 

3. You need to determine what size heater you need for the size of the space you want to heat.

4.  It is important to pick the correct gas type of gas heater from either LPG or Natural Gas versions.

5. The gas heater manufacturers you consider should be known for quality and reliability, like the Rinnai gas heater or Paloma gas heater range.

These topics are covered in the following review…

Types of Gas Heaters

The types of gas heaters are grouped by gas heating methodology, venting, choice of natural gas or LPG, and heat output:

♦ Gas Heaters - Portable Convector Type: Unflued gas bayonet type of gas heater using a fan to distribute the heated air around the room

♦ Gas Heaters - Portable Radiant Convector Type: Unflued bayonet types of gas heaters using radiant heat panel and distributes the heated air around the room with a fan

♦ Gas Heaters - Power Flued Gas Fixed Flued Heater Type: Gas fixed flued heater types of gas heaters with one fan driving combustion gases out of the flue and the other fan to distribute the heated air around the room

Gas Heaters - Console or Inbuilt Flued Gas Heater Type: Gas fixed flued heater type of gas heaters with a fan to distribute the heated air around the room

Gas Heaters - Gas fire heaters, Gas Log Fires, Gas Fireplace Type: Decorative flued gas heaters.  Most are gas fixed flued heater types of gas heaters and almost all use a fan to distribute the heated air around the room

The various types of gas heaters have advantages over other types of gas heaters, including electric space heaters, wood fireplaces and heat pumps, as well as the gas heater manufacturers.

Home Indoor Gas Space Heaters

Home Gas Space Heaters

Home indoor gas space heaters provide heat to selected rooms of your home, as opposed to whole house ducted heating systems.

Home indoor gas space heaters come in different types of gas space heaters, including convectors, radiant-convectors, gas fixed flued heater and wall heaters.

indoor gas space heaters are also an energy efficient way to heat your home.

Gas Consumption & Heat Output

For indoor types of gas heaters, gas input is expressed in Mj/hour. Heat output is measured in kW. 

Generally speaking, greater gas input equals increased heat output, taking into account the relative energy efficiency ratings of the models being compared.

Star Ratings for Best Indoor Gas Heaters


Gas heater manufacturers in Australia must have all indoor types of gas heaters tested and labelled for energy efficiency Star Ratings. 

Understanding what they mean can save you lots of money.  The Star Rating is based on net heater efficiency. 

For more details, please see Energy Efficiency & Star Ratings for Gas Heaters


Best Portable Gas Heater - Unflued Gas Heaters

The best portable gas heater has a number of beneficial features including thermostatic control, twin programmable timers, remote controls, child lock function, tip over cut-off safety feature, and a solid warranty. The best portable gas heater would also have 5.8 or 5.9 star energy rating, a high heat output in the 6.2 kW range and with either LPG or natural gas heaters for sale.

The best selling Rinnai Avenger 25 portable gas heaters have all of the aforementioned features and is arguably the best of the portable gas heaters.

To be best portable gas heater it must also fit your needs. In addition to capacity sizing and available features, weight and physical size must be considered, for ease of portability.  Emission levels can also vary, with some models of this type of gas heater having about ½ the permissable amounts.

Portable heaters are very energy efficient. 

The typical Star Ratings for a portable gas heater is 5.8 or 5.9 Stars, meaning that they are about 90% efficient in converting the gas to usable heat. 

They require no installation, if you already have a gas heater bayonet fitting, and can be stored away when not in use.

Unflued gas heaters do emit some combustion gases into your home, with the maximum levels specified by government safety regulations. 

Care should be taken if the family includes very young, unborn, elderly or individuals with some medical conditions, as they may be more sensitive to the emissions. 

They should not be used in sleeping rooms or very small rooms, like bathrooms. 

However, for the majority of people, they are quite safe when you follow all of the manufacturer’s safety instructions, including providing adequate ventilation.

Portable heaters come in three sub-types of gas heaters, based on how they distribute the heat within the room:

Gas Radiant Heaters

Radiant gas heaterRadiant Heaters warm you much like the sun. Radiant type of gas heater allows specific spaces within an indoor area to be heated, primarily warming only the people and objects positioned in front of the unit. 

They also come in smaller sizes for minor heating applications.

The advantage of radiant heaters is that they are generally the lowest cost option and require no electrical connection. 

The disadvantages are an older style appearance  and uneven heat distribution in the space being heated, with most of the warmth felt in the area directly in front of the heater.

Radiant  gas heater manufacturers include Rinnai and Paloma.

Gas Convector (Convection) Gas Space Heaters

gas convector heaterGas convector (Convection) type of gas heaters warm your space using convection or air movement. Along with the gas burner, they incorporate a fan to help distribute the heat more evenly throughout the space. 

Gas convectors are also sometimes referred to as Space Heaters.

The advantage of convectors is that they also tend to have more advanced features like remote controls, timers, low emissions technology and electronic thermostatic controls, as well as a more contemporary appearance. 

The disadvantages are that convectors are a bit more expensive than radiant heaters and they do require an electrical connection to power the fan. 

Gas convector or space gas heater manufacturers include Rinnai, Braemar and Paloma.

Radiant Convectors

gas radiant convector heaterRadiant Convector type of gas heater combines the two methods of heat distribution. They provide radiant heat to the area directly in front of the unit while distributing heat around the space using fan driven convection. The advantage is that you get spot heating as well as space heating. 

Pricing is in between radiant and convector models. 

The disadvantages include the need for an electrical connections, lack of some of the more advanced features and more traditional styling. 

Radiant convector  gas heater manufacturers include Rinnai and Everdure.

Gas Fixed Flued Heater for the Home - Fixed

Flued Gas Heaters for the Home - Rinnai EnergySaver Gas fixed flued heater for the home are fixed in place by the flue. They offer the warmth of gas heating with no indoor combustion emissions.  The term “fixed flued” refers to the fact that the combustion gases generated when the gas is burnt are directed out of your home by means of a fixed flue pipe through the wall or ceiling. 

Traditional gas fixed flued heaters have the flue pipe go straight up through your roof and are fixed in place. 

Powered flues give you many more design options, as the exhaust gas is fan forced horizontally or vertically, depending on the model. 

Additional possibilities include 90° bends and the allowable flue length may also be longer.  This allows for wall outlets as well as roof exhausts. 

In addition, with a conventional gas heater, the air used for combustion is drawn from within the room. 

Gas fixed flued heater are also available in direct vent or balanced flue models draw the combustion air from outside your home, so there are less drafts and the fireplace is unaffected by closed doors, etc. 

The amount drawn in is balanced with the exhaust sent out. 

Flued heaters do cost more than portable heaters and must be installed by a gas fitter. 

Gas fixed flued heater are not as energy efficient as portable gas heaters and can have a broad range of performance, with Star Ratings from 1.0 to 4.8 Stars.

Gas fixed flued heater come in three sub-types based on installation options:

Gas Fixed Flued Radiant Heaters

flued radiant gas heater Gas fixed flued radiant type of gas heaters are radiant convectors that incorporate a flue for the combustion emissions. They provide radiant heat to the area directly in front of the unit while distributing heat around the space using fan driven convection.

The advantage is that you get spot heating as well as space heating, with no indoor emissions. 

They are also sized to fit into existing fireplace opening or as a stand-alone console.

The disadvantage of gas fixed flued radiant heaters is that they do not have power flues, so the installation options are a bit more limited. 

Gas fitter installation is also required.  The styling is also a bit more dated. 

Rinnai is the major gas heater manufacturer of this type of heater.

Gas Fixed Flued Heater Power Flued

Power Flued Gas HeaterGas fixed flued heaters power flued are a convection type of gas heater with a power driven flue. The power flue provides more installation options. The advantage is that you get more evenly distributed space heating, with no indoor emissions. 

Styling is very contemporary and more advanced features like remote controls, timers, and electronic thermostatic controls are available.

The disadvantage is that power flue models tend to be the most expensive option and all require installation by a gas fitter. 

Gas fixed flued heaters power flued manufacturers include Rinnai and Braemar.

Best Wall Furnace - Gas Wall Heaters

Gas Wall Furnace

The best wall furnace would probably be the best selling wall furnace made by Braemar.

Wall heaters or wall furnaces are a type of gas fixed flued heaters that is designed for an on-wall or in-wall installation. 

Adaptor kits are also available to fit them as replacements for old style wall furnaces.

The advantage, as convection style heaters, is more evenly distributed heat. 

The ability to retro-fit into existing openings is also a big plus.

The disadvantage is that wall furnaces can be a bit expensive and do require installation by a gas fitter. 

Best wall furnace gas heater manufacturers include Braemar.

Gas Fireplace & Gas Log Fires

Gas Fireplace & Gas Log Fires are yet another type of flued gas heater. 

For more comprehensive information, please see Gas Fireplace for Your Home

The Best Indoor Gas Heater for Large Room

The best indoor type of gas heater for a large room is one with a high kW/hour rating, as that is the measure of heat output.  The best indoor gas heater for large room is not necessarily the one with the highest MJ rating, as MJ/hour is the measure of gas input.

Generally speaking, greater gas input equals increased heat output, taking into account the relative energy efficiency ratings of the models being compared.

Please read more about gas heater sizing below…

What Size Gas Heater Do I Need?

What to Consider

If you buy too small a heater, it will not be able to adequately heat the intended area. 
Selecting a heater that is too large will cost you extra money and oversizing can be unsafe. 
A number of things need to be considered when determining your heater sizing:
♦  The volume of the area to be heated including consideration of ceiling height.
♦  The climate zone that you live in.
♦  The physical features of your home including wall & ceiling insulation, window coverings and carpeting.
♦  The kW output of the gas heater, not to be confused with the gas Mj input.

Heating Area Volume & Climate Zone

The required kW output required is primarily dependent upon the area to be heater and the climate zone in which you live.  (Please see gas heater manufacturer climate zone map at bottom of page)  
The following rough guide assumes your ceilings are no higher than 2.4M:

Very Cold Zone: 1kW output required for each 8.5m²

Cold Zone: 1 kW output required for each 10m²
Cool Zone: 1kW output required for each 13 m²
Mild Zone: 1kW output required for each 16m²

Adjustment Factors

The indicated heating areas would be adjusted down by 5% for each of the following conditions: house built on pillars (non-slab), no carpets on floors, no drapes on windows or a ceiling height exceeding 2.4m. 
Deduct an additional 10% if the area does not have ceiling insulation. 
Please note that this is only a guide and individual home designs and situations may vary.

Gas Heater Sizing Example #1: 

You live in the Cold Zone and you want to heat an area 5m X 10m, which equals 50m². 
Because 1kW will heat 10m², you should need a heater with a 5kW output.

Gas Heater Sizing Example #2: 

Same as the previous example but in this case your ceilings are over 2.4m and you have wood flooring instead of carpeting. 
You would need to deduct 5% for each of these two items. 
So, instead of 1 kW heating 10m², it would heat 9m² (10% total reduction).  
This means you would need a heater with 5.6 kW of output (50 ÷ 9).

Use kW not MJ

What is a MJ?Megajoules per Hour (MJ/hr) ratings on appliances actually indicate the gas consumption of the appliance, not the heat output. 
Gas heater manufacturers often express it as just MJ.
Kilowatt (kW) is how gas heater output is measured.

Energy Efficiency Matters - Star Ratings

So, remember to use kW as a comparison and not MJ. 
The efficiency of the heater, in converting gas energy to heat, is a key factor. 
For example, a 25MJ heater with a 5.8 Star rating has an output of 6.2kW. 
A 25MJ heater with a 2.8 Star rating only has an output of 5.0kW. 
As a result, in a Cold Zone climate, they would heat 62m² and 50m², respectively. 
This means that the 5.8 Star heater will heat an area 24% larger while using the same amount of gas. 
Please refer to the gas heater manufacturers’ specifications to determine the exact kW output for each heater you are considering.

Minimum Room Sizing

Some States specifiy the minimum room sizing (volume of room in M³)  and minimum ventilation requirements for unflued heaters.  
Minimum room sizing also varies between thermostatically controlled and manually controlled heaters. 
Portable heaters should not be used in bedrooms, bathrooms or hallways.  
All installations must comply with Australian Standard AS5601 - Gas Installations and gas heater manufacturers' instructions. 
Your gas fitter will be able to guide you on many of these points.

Manufacturer Sizing Charts

To make it even easier, most gas heater manufacturers have sizing charts, for their heaters, based on climate zone maps.  

Take the time to measure the area you wish to heat and use these charts and maps to get the correctly sized heater. 

It is always wise to follow the gas heater manufacturers' advice.

Compare Best Indoor Gas Heater Prices

Now you can compare prices for all the major brands of indoor gas heaters by the leading gas heater manufacturers, including:

Rinnai, Everdure, Paloma, Braemar, Cannon and Regency

Click on your category of interest to compare gas heater prices:

Portable Gas Heater Prices

Gas Fixed Flued Heater Prices

Gas Fireplace and Gas Log Fire Heater Prices



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The information in this article is derived from various sources and is believed to be correct at the time of publication. However, the information may not be error free and may not be applicable in all circumstances.