According to customers, Rinnai is the best gas heater brand in Australia with 97% of surveyed owners recommending the brand. The Japanese manufacturer received the highest overall score with high ratings for safety, temperature consistency and build quality.
Australian gas heaters come in two main types: flued and unflued.
Flued gas heaters
One thing that causes a lot of concern when buying a gas heater is the fear of a room filling up with dangerous fumes and emissions. A flued gas heater solves this problem as it has a pipe that takes gases outside so the air in your room stays clean. Since installation is required, there are extra costs involved, and you won't be able to move your heater from room to room. Many models offer features like a remote control, a programmable timer and child locks, and you can often use an existing fireplace to place your heater and take advantage of the chimney.
Emissions are directed outside rather than into the room
Better for spot heating
Can be used in smaller areas
Suitable for allergy sufferers, asthmatics and people with respiratory issues
Require installation which adds more cost
Not as energy efficient
Needs gas filter installation
Unflued gas heaters
An unflued gas heater is a portable heater that uses a gas bottle tucked into the back. Most of the gas turns into heat, and it can heat up a room quickly. There are rules around what type of room you can use an unflued heater in, so they are recommended for living areas rather than bedrooms or studies. Unflued heaters come in two different types:
Radiant-convection. Cheaper to buy and without as many features, these unflued heaters send heat out into the room from an exposed area. They operate by pressing and holding an ignition button.
Convection. Most often convection heaters are electronically controlled and come with a remote. They have a thermostat for temperature control and a fan to speed up the movement of hot air.
Portable so you can take it from room to room
More energy efficient and cheaper to run
Heats a room faster
Some models have safety features
Puts gas emissions go back into the room, so airflow is crucial
Illegal to use in small and enclosed spaces
Produces carbon monoxide and nitrous oxide
May irritate respiratory issues or allergies
Can cause condensation
How to compare gas heaters
Unflued heaters tend to cost anywhere between $400 and $1,500, whereas flued heaters range from $400 to $2,200.
Not all gas heaters have the same heating ability, so it's important to understand what you should be looking at when browsing your options. Check out our round-up of the best gas heaters on the market this year for more information.
The heater that you buy should be able to adequately heat the room size that you will keep it in. Since it is illegal to use unflued heaters in smaller rooms, you will need to check the regulations on what is considered a small room in your state. Unflued heaters are better for larger rooms and living areas, but you'll also need to consider the heat output versus the size of the room.
As a guide, you can count on 1kWh being able to heat around 10 square metres (sqm). So if you have a smaller room of around 30sqm, your heater will need 3kWh of heat output to heat the room efficiently. Larger areas of 80sqm will need 8kWh of heat output.
To heat your room faster, look for the highest MJ/h rating in the heaters that are suitable for your room size. Gas is measured in megajoules (MJ), and the higher this number, the more gas will be used for faster heating. Flued heaters have a maximum input of more than 20MJ, and unflued heaters have a maximum input of around 10MJ.
Options for flued gas heaters
If you are specifically looking at flued heaters, consider the following features:
Monique Law is a New Zealand writer for finder. She has superb research skills and is experienced in writing about a wide range of topics. When she’s not in front of her keyboard, she’s usually staying updated with the latest world events or exploring a new and interesting place.
How likely would you be to recommend finder to a friend or colleague?
Very UnlikelyExtremely Likely
Thank you for your feedback.
Our goal is to create the best possible product, and your thoughts, ideas and suggestions play a major role in helping us identify opportunities to improve.
Important information about this website
finder.com.au is one of Australia's leading comparison websites. We compare from a wide set of banks, insurers and product issuers. We value our editorial independence and follow editorial guidelines.
finder.com.au has access to track details from the product issuers listed on our sites. Although we provide information on the products offered by a wide range of issuers, we don't cover every available product or service.
Please note that the information published on our site should not be construed as personal advice and does not consider your personal needs and circumstances. While our site will provide you with factual information and general advice to help you make better decisions, it isn't a substitute for professional advice. You should consider whether the products or services featured on our site are appropriate for your needs. If you're unsure about anything, seek professional advice before you apply for any product or commit to any plan.
Products marked as 'Promoted' or 'Advertisement' are prominently displayed either as a result of a commercial advertising arrangement or to highlight a particular product, provider or feature. Finder may receive remuneration from the Provider if you click on the related link, purchase or enquire about the product. Finder's decision to show a 'promoted' product is neither a recommendation that the product is appropriate for you nor an indication that the product is the best in its category. We encourage you to use the tools and information we provide to compare your options.
Where our site links to particular products or displays 'Go to site' buttons, we may receive a commission, referral fee or payment when you click on those buttons or apply for a product. You can learn more about how we make money here.
When products are grouped in a table or list, the order in which they are initially sorted may be influenced by a range of factors including price, fees and discounts; commercial partnerships; product features; and brand popularity. We provide tools so you can sort and filter these lists to highlight features that matter to you.
We try to take an open and transparent approach and provide a broad-based comparison service. However, you should be aware that while we are an independently owned service, our comparison service does not include all providers or all products available in the market.
Some product issuers may provide products or offer services through multiple brands, associated companies or different labelling arrangements. This can make it difficult for consumers to compare alternatives or identify the companies behind the products. However, we aim to provide information to enable consumers to understand these issues.
Providing or obtaining an estimated insurance quote through us does not guarantee you can get the insurance. Acceptance by insurance companies is based on things like occupation, health and lifestyle. By providing you with the ability to apply for a credit card or loan, we are not guaranteeing that your application will be approved. Your application for credit products is subject to the Provider's terms and conditions as well as their application and lending criteria.