Mazout, also known as heating oil or fuel oil, is a fossil fuel obtained by refining crude oil. It consists mainly of hydrocarbons and is used for heating purposes in households and industries. In a heating system, heating oil is pumped from a storage tank to the boiler, where it is atomised and ignited by a burner. The heat released heats water, which then heats rooms via radiators or underfloor heating
Quality heating oil, competitive prices and personal service: this is what MAES stands for. Discover our range of products and services.
Mazout (gas oil)
Everything you need to know about heating oil.
Mazout Extra
Find out more about gas oil extra.
Mazout Premium+
All information on gas oil Premium+
Buying gas oil at MAES: nothing but benefits
At MAES, ordering gas oil online at the best price is incredibly easy. Simply fill in your details and the desired quantity of gas oil in our form and submit your request.
But why is MAES the best choice to buy gas oil online and have it delivered? Let us explain!
At MAES Energy & Mobility, you can order gas oil quickly, easily, and reliably. Thanks to our years of experience and extensive network, you are guaranteed competitive prices and smooth gas oil delivery straight to your location.
MAES is known for high-quality fuels and excellent customer service, ensuring you always receive top quality and support.
Additionally, we offer flexible payment options and tailor our service to your specific needs—whether you’re a private or professional user. Choose MAES and enjoy hassle-free gas oil delivery!
Inspection of your heating oil tank
On 1 March 2009, the inspection of all then-existing private heating oil tanks in the Flemish Region became mandatory. Whether you need to invite a technician again after that initial inspection depends on the size and location of your tank. For example, this is not the case if you have an above-ground tank of less than 6,000 litres. If your tank is larger or is underground, separate regulations apply.

Legislation and premiums concerning gas oil
Legislation
Anyone who heats with gas oil and wants to order heating oil must take into account a number of legal requirements, including those relating to the inspection of your heating oil tank. These rules are obviously not designed to make life difficult for you, but rather to guarantee the quality and optimum efficiency of your heating installation, so that you can sleep easy.
Premiums and allowances
- Social heating fund
Together with the government and OCMWs, the petroleum sector takes care of low-income people by partially intervening in the payment of their gas oil heating costs. On the website of the Flemish government you can read who is eligible for a heating allowance.
- Gas Oil Cheque
The government provides this cheque to eligible households who received a gas oil delivery (or bulk propane) for heating their primary residence between November 15, 2021, and March 31, 2023.
- Flemish improvement premium
Thanks to the Flemish Improvement Grant, homeowners and tenants can receive financial support when replacing an old gas oil boiler with a new one that has a European energy label A or B, or when optimizing their chimney system.
- Premiums related to a hybrid heating system
A hybrid heating system, which combines gas oil with a renewable energy source, allows you to benefit from free energy while using gas oil as a backup fuel to eliminate supply risks. In Flanders, subsidies are also available for solar water heaters and heat pumps.
- Flemish renovation premium for boiler replacement
If you install a high-efficiency gas oil boiler (with a European energy label A or B), you may qualify for a Flemish renovation grant that reimburses up to 30% of your invoice. Visit Wonen Vlaanderen for more details.
Frequently asked questions
Deliveries always depend on busy times. We try to do this as quickly as possible, usually the next working day or the working day after. In very busy periods, this can sometimes take a little longer, but we always contact you in good time.
The price of heating oil varies every day. To consult an accurate price, just fill in our order form. There you will get an overview of the current heating oil price.
Delivery time depends on how busy it is. MAES aims to deliver as quickly as possible, usually the next working day or the working day after. In busy periods this may take a little longer, but you will always be informed in good time.
Currently, you pay for mazout via bank transfer or bank contact.
Sure, there are discounts on volume!
Heating with heating oil
If you heat your home or business with gas oil, also known as heating oil, you enjoy many advantages. You have complete freedom to choose your supplier and can switch every time you need to buy gas oil. However, having a reliable partner who guarantees the best quality and service at the best price is invaluable. With MAES, you can order gas oil online with confidence and keep your heating budget under control.
Buy cheap gas oil online
At MAES, buying gas oil at the lowest price is simple. Fill in your details and the quantity of gas oil you need in our form and send your request. Indicate whether you need standard or premium gas oil. We offer both Gas Oil Premium+ and Gas Oil Extra. Interested? We’ll provide you with the best possible deal, with no obligation to accept—but we believe our competitive pricing will convince you!
Steps to ordering gas oil from us
Like our offer? We take care of everything from A to Z. Our own drivers transport your gas oil from the refinery to your storage tank, ensuring top-notch service and expert advice. We can even inspect your heating oil tank for you.
Does the combination of financial benefits, quality, and excellent service sound appealing? Request gas oil information, send your request, and be surprised by our competitive prices!
Why heat with gas oil?
That gas oil provides cozy warmth at home or work is well known, but are you aware of all its unique advantages? Here’s why you should buy gas oil online and have it delivered by MAES:
- Efficient: A modern heating oil boiler consumes up to 40% less fuel than older systems.
- Safe: Gas oil does not ignite at normal room temperature (below 55°C) and has almost no risk of CO poisoning.
- Independent: You manage your own fuel supply and decide when and where to order gas oil.
Maximum efficiency with heating oil
With an efficiency of no less than 98%, the latest generation of condensing oil boilers gets the absolute most out of your heating oil. Moreover, these condensing boilers emit about 30% less CO2. When you know that half of Flemish households that heat on gas oil still have an old oil boiler in use, the improvement potential appears to be quite large!
Want to buy gas oil online? Do it with us!
High-quality yet affordable gas oil, combined with personal service—that’s what MAES stands for. Discover our products and services today and order gas oil online for fast gas oil delivery!
The price of gas oil under the microscope
At MAES, you can be sure to order gas oil online at a competitive price. While suppliers must adhere to government-imposed maximum prices, we determine our own margins. Curious how official gas oil prices are set?
- How is the official maximum price determined?
With the official heating oil price, the government wants to protect you as a consumer. The price includes a contribution to the Social Heating Fund and contributions to guarantee Belgian security of supply. - What factors influence the heating oil price?
The price of heating oil depends on the price of a barrel of crude oil on the international market, and is subject to the law of supply and demand and the evolution of the dollar exchange rate.
Fuel tank: installation, maintenance and inspection
Installing a gas oil tank
Before gas oil delivery, you need to choose between an underground or above-ground tank. Underground tanks save space but require more maintenance, while above-ground tanks are easier to inspect and maintain.
Gas oil tank maintenance
Annual maintenance is essential to ensure efficiency and prolong the lifespan of your heating system. Regular checks, including chimney and boiler cleaning, can lower your fuel consumption.
Gas oil tank inspection
In Belgium, all existing gas oil tanks were required to be inspected as of March 1, 2009. Future inspections depend on the size and location of your tank. Above-ground tanks under 6,000 liters generally do not require repeated inspections, but larger or underground tanks must comply with specific regulations.
At MAES, you can not only order gas oil online, but also request tank inspections whenever needed and any gas oil information you need.