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Boilex™ Ultraclean Multi Fuel Stove

Meeting the global challenge for clean, smoke free and safe cooking

Revolutionary stoves that can help improve global health for millions.

An overview of the Ultraclean Multifuel stove

Ultraclean Overview

Clean, smoke free, safe cooking is a global challenge:

In the general population, over 3 billion people (c500 million households) cook with smoky fuels on a daily basis, resulting in respiratory diseases such as Pneumonia and Lung Cancer leading to over 4 million deaths per annum; this equates to one death every time you blink or to the population of Ireland, more that HIV/AIDS and Malaria combined. Smoke is also responsible for Cataracts, the largest cause of blindness in the developing world, mainly to women and children as they spend most time in a cooking environment.

In the case of Militaries, they continue to use Hexamine for individual soldiers, which is highly toxic and hazardous to transport. Traditional field kitchens for larger groups of soldiers are predominantly gas powered, which is a potential explosive risk and difficult to resupply.

To meet the challenges of clean cooking in a humanitarian or military situation, Boilex™ have introduced the new Ultraclean Stove for individual and larger group cooking. The Ultraclean stoves will boil 5 litres of water in c11-14 minutes compared with over 30 minutes from comparable stoves and use up to 80% less fuel. This unique stove has a multi-fuel capability, meaning the user can switch between the most readily available fuel from biomass, to liquid, to high energy density fuels from one stove. Made of Stainless Steel, it is robust and guaranteed for up to 5 years (assuming careful daily use).

The Boilex™ Ultraclean stove is ideal for all terrain and all environments and can be modified and tailored to suit specific needs. The Boilex™ Ultraclean stove, accessories and Zip™ Cooking Fuels can be supplied in various formats, from bulk packs to individual stoves, to provide bespoke cooking and water heating solutions.

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See the Ultraclean stove in action


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Features & Benefits

IconFuel burns cleanly with no combustion deposits.
IconNot classified as hazardous / air transportable
IconMulti fuel options to suit fuel supply sources / budget
IconDurable to last up to 5 years
IconUses 80% less fuel (when compared to open fires)
IconDC ports / USB ports for charging
IconPowerful / boils 5ltrs of water in c11.5 minutes
IconSuitable for outdoor use
(Only use indoors with adequate ventilation which means with a ventilation system that carries all exhaust gases and fumes outdoors)
IconLightweight and easy to carry c1-5.5kg to c2.7kg
IconUsed in all weather conditions
IconHolds pot of up to 30kg
IconLow cost
IconHeat controller from simmer to boil
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Fuel Options


The core Boilex™ Ultraclean 1 and 2 stoves are designed to work with biomass (wood, wood pellets, wood chips, dung, twigs and crop waste) that can be sourced locally. The fuel is top loaded into the stove using a chute and ideally has a constant 1-2 inches of fuel in the crucible to operate.

The core stoves can be simply modified with the use of specific metal inserts to enable them to operate with alternative fuels such as High Density Fuels or liquids such as Kerosene. The design of the inserts allows the air to circulate in the stove to maximise the performance of the fuel in use.

High Density Fuels

Locally sourced fuels are not always available and that is why Zip™ have developed their cooking fuel blocks. This fuel is based on a naturally derived, sustainable biofuel that is non toxic and burns cleanly with a high calorific value. It is also air transportable so can be parachute dropped into remote locations when required. The smaller Boilex™ Ultraclean 3 stove is designed to operate only using the high energy density Zip™ Cooking Fuel blocks and is significantly lighter than the other Ultraclean stoves. At c1kg, it is designed specifically for military / expeditionary use.


In some situations liquids, such as Kerosene or alcohols, are the preferred or only fuel options readily available. These fuels are highly flammable and less safe to use when cooking. The core Boilex™ Ultraclean 1 and 2 stoves can easily be converted to burn such liquids, again with the use of a robust metal insert and a wicked canister containing the fuel. The design of the insert allows the air to be sucked away from the centre of the stove to produce a flame that is significantly wider and more efficient when transferring heat to a cooking pot or pan. The enclosed nature of the wicked container also ensures the risk of spillage is significantly reduced.

Micro Business

Not only does the Boilex™ Ultraclean range of stoves have profound health benefits, it is also a potential source of income for local communities. The stoves can provide local commerce opportunities for sales, distribution and production of the stoves and wood pellet fuel. The additional service of charging mobile telephones has also proved to be popular. Traditionally in Africa, such micro commerce is adopted by women, who are empowered to create local employment, improve living standards and are able to further support their families with opportunities such as education or commerce.

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The advantages of Ultraclean

Clean burn performance.

A Boilex™ Ultraclean stove is categorised as a ‘Forced Air’ or ‘Gasifier’ type of stove. It works by a use of a battery operated ‘fan’ in its base, which is recharged using a solar panel, mains or vehicle battery. The fan blows air up though the sides of the stove cylinder prior to being released into the combustion chamber where it ensures a more complete burn of the fuel. On full power, the stove quickly generates temperatures up to 1000ºc. It is possible to vary the power via a control gauge, which moderates the amount and speed of air flowing into the stove. Being able to control the heat is similar to other cooking methods, such as gas, and is inherently easy to use and more readily culturally accepted. The greater the amount of air, the more powerful the combustion process and the cleaner the fuel burns. The Boilex ™ Ultraclean stoves utilise the latest patented designs to produce a clean burn even at low levels.

This ultra efficient way of burning the fuel results in up to 80% less fuel being needed to cook with (compared to open fires) and up to 40% less fuel than other forced air stoves. This not only saves cost for the user but may also result in significantly less time spent collecting fuel, allowing the user to spend time on more added value tasks.

Unique to Boilex™ is the capability of using many types of fuel, including biomass (wood chips, wood, twigs, dung and pellets), liquids (Kerosene, Methyl Esters and alcohol) and high energy fuels (such as Zip™ Cooking Fuel, alcohol gels and Hexamine), all from one stove. This gives improved convenience to the user and the ability to switch from less efficient or more expensive traditional cooking stove/fuel combinations, many of which are also unsafe, as the table below shows.

Boilex™ Ultraclean stoves make a daily difference - globally

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Boilex™ Ultraclean Multi Fuel Stove

Revolutionary stoves that can help improve global health for millions.


Click below for our Ultraclean stove downloads.

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Frequently Asked Questions

Can any type of fuel be used with the Boilex™ Ultraclean stove?

The Boilex™Ultraclean includes inserts to enable it to work with biomass (such as wood, twigs, pellets, dung), liquids (such as alcohol and kerosene) and high energy density fuels (such as Zip™ Cooking Fuel and Hexamine).

Why should I use the Boilex™ stoves?

Because not only is the Boilex™ Ultraclean stove powerful, it is able to use different fuels, it is also one of the cleanest burning stoves on the planet!

How heavy are the stoves?

The Boilex™ Ultraclean weighs 3kg.

How much water can I boil?

The strong durable structure of the Boilex™ Ultraclean stoves enable them to hold pots of up to 30 litres but more normally the volume cooked would be 5 to 10 litres. So ideal for large groups.

How long does the Boilex™ Ultraclean stove last without being charged?

Between 20 and 60 hours, depending on the type of usage; full power uses the battery more quickly. LED lights on the front of the stove indicate the amount of battery power remaining.

Are the stoves heat resistant?

Yes. The Boilex™ Ultraclean stove can be easily picked up (by their sides) without risk of burning hands.

How long after cooking can you pack them away?

The Boilex™ Ultraclean stove can be stowed immediately after use.

How do you transport them?

The Boilex™ Ultraclean stove can be delivered with a carry case to enable hassle free transport.

Do they come in a case?

The Boilex™ Ultraclean stoves can be delivered in a robust carry case.

What size are the Boilex™ stoves?

Boilex™ : 27.5cm high x 17.5cm  x 17.5cm base

How much fuel do you have to use?

It varies depending on the stove used, climatic conditions and altitude – and how much water needs to be boiled, or the quantity of food that needs to be cooked. To bring 5L of water to the boil, the user will need approximately 300g to 400gof biomass wood, or approximately 150gm high energy-density solid fuel e.g. Zip™ Military Fuel Blocks,or approximately 300g of Kerosene.

What type of metal pot / pan can you use?

Any metal pots and pans can be used.

How long does the Boilex™ Ultraclean stove take to charge?

About one hour from a standard mains charge and 10 hours from the solar panel. A full charge should be sufficient for a week’s use.

Can I use the stoves indoors?

Ideally no, due to the production of exhaust gases. The stove and fuel should only be used outdoors. The stove can be used for indoor cooking, provided there is adequate ventilation, which means with a ventilation system that carries all fumes and exhaust gases outdoors.

Can I use the stoves inside my tent?

No, the stoves should not be used in an enclosed space. There must be adequate ventilation to carry away the fumes and exhaust gases outdoors.

How long do they take to assemble?

The Boilex™ Ultraclean stove comes fully assembled, though there are different set up options associated with the switch between the chosen fuels. Switching can take up to 1 minute, so not complicated or time consuming.

Can you put the stoves on any surfaces?

Yes, the stoves have rubber corner pieces that ensure they can be placed on any surface without scratching. There will also be no heat damage to any surface since the heat travels upwards.

Where can I buy them?

The easiest place to find out where to purchase is via our website enquiry sheet or review the stockists’ page on this website.

How much do they cost?

The prices set will be set by your local retailers. If wishing to order direct, please email keiron.francis@standard-brands.com.

If I buy multiple stoves, are there any reductions in cost?

Volume discounts are possible. Each order will be dealt with on its own merits. For order enquiries, please email Keiron. Francis@standard-brands.com

How do I clean the stoves?

The Boilex™ Ultraclean stove is waterproofed but we do not recommend they are submerged in water at any time. The outside of the stoves should be cleaned with a wet cloth, the inserts containing the fuel may be cleaned thoroughly with soapy water.

How do I dispose of the stove?

The body of the Boilex ™ Ultraclean stove is recyclable metal that can be disposed of in any designated metal recycling station, but is also safe to dispose of in general trash. The internal battery and electronics and fan will need removal and disposed of at an approved battery and electronics components recycling facility.

If something is wrong with the Ultra Clean, can I order spare parts?

Yes, details of the process to follow will be provided by your distributor at point of purchase. Please complete our enquiry form for further information or call +353429372140 or e-mail Keiron. Francis@standard-brands.com

Is there a help line number I can call for help?

Yes, there is a contact number. Please call +353429372140 or email Keiron. Francis@standard-brands.com

How many uses do the stoves have before I have to get a replacement?

The Boilex™Ultraclean is guaranteed for two years (terms apply).

How long does it take to boil a cup of water?

On full power, the Boilex™ Ultraclean stove will boil a 500ml cup of water in approximately 4 minutes.

Are there any sharp edges that could puncture plastic or material?


When can I use them?

For outdoor cooking, in most climatic conditions, including desert, arctic and mountains. Indoor cooking as possible with adequate ventilation to carry exhaust gases and fumes outdoors. Ideally it should not be used indoors.

What is the maximum saucepan / pot weight?

30kg. Most large filled pots and pans weigh around 3-6kg.

Are they safe for children to use unsupervised?

We do not recommend any stove is left unsupervised in the presence of children or pets.

Can they be used at high altitude?

Yes. The Boilex™ Ultraclean stove is designed to work at high altitude with all approved fuels.

Will the stoves go rusty in damp conditions?

No. They are made of Stainless Steel and Aluminum and are coated with a waterproofing agent.

Will the stove fall over easily?

No, the Boilex™ Ultraclean stove is stable as a result of the retractable legs and base.

Do the stoves come with cups or pots?

No, we only make Boilex™ stoves and Zip™Cooking Fuel. Cups and pots should be purchased separately.

Do I need any other equipment to use them?

Pots and pans for cooking, and the required utensils. A lighter or matches for lighting the fuel.

Do the stoves come with instructions for how to use and assembly?

Yes, full instructions are available on the packaging and can be found on the product page of this website.

Are there a list of ‘don’ts’ when using the stoves or cooking fuel?

Store all fuel out of the reach of children and pets. Don’t leave the stove unattended when in use. Never use in an enclosed space that does not allow exhaust gases and fumes to escape outdoors. Always use outdoors or with an adequate ventilation system that carries fumes outdoors. Keep on a stable surface from which it cannot fall. Please adhere to the warnings on all packaging.

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Suitable For

Product Range


For more information on all Boilex™ stoves and Zip™ Cooking Fuel
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