There's nothing quite like a hot drink after a long day walking in the hills. But if you've ever tried using a camping gas stove on a freezing morning, you may have noticed that the flame seems weaker than usual, water takes longer to boil, or the stove struggles to light.
It's a common problem when camping in colder conditions, and it isn't necessarily a fault with your stove.
The reason is largely down to how camping gas behaves as temperatures fall. Understanding this can help you choose the right fuel and avoid frustrating cooking problems on winter trips.
Why Does Cold Weather Affect Camping Gas?
Most portable camping gas stoves use a mixture of propane, butane and/or isobutane stored as liquid under pressure inside a canister.
When you open the stove valve, liquid fuel evaporates to produce the gas that feeds the burner.
As temperatures fall, the pressure inside the canister decreases, making it harder for the fuel to vaporise quickly enough to maintain a strong flame.
This can result in:
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Reduced burner power
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Longer cooking and boiling times
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Difficulty maintaining a consistent flame
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Poor performance as the canister empties
The problem can become worse during prolonged cooking because evaporation cools the canister further.
Not All Camping Gas Is the Same
Different gas blends behave differently in cold conditions.
Butane is commonly used in camping fuel but becomes difficult to use in vapour-fed stoves as temperatures approach 0°C.
Isobutane performs better in colder weather, with a boiling point of approximately -12°C.
Propane has a much lower boiling point, around -42°C, making it useful in cold-weather fuel blends.
However, the performance of a mixed-fuel canister depends on its composition, temperature, remaining fuel and stove design. A blend containing propane will not necessarily perform like pure propane.
Primus Summer Gas vs Power Gas vs Winter Gas
Primus offers different camping gas products designed for different seasonal conditions.
Primus Summer Gas
Designed primarily for warmer conditions, Summer Gas is a suitable option for many spring and summer camping trips.
It is intended to deliver consistent performance in warmer temperatures, rather than being optimised for freezing conditions.
Primus Power Gas
Power Gas is a versatile choice for general three-season camping.
Its propane and isobutane blend offers better cold-weather capability than conventional butane-heavy fuels, making it useful when temperatures vary between day and night.
For many walkers, backpackers and campers, this is a practical all-round choice.
Primus Winter Gas
Winter Gas is designed specifically to improve performance in cold conditions.
It uses Primus Vapor Mesh technology, which increases the surface area available for liquid fuel to evaporate inside the canister.
This helps maintain gas delivery during extended use in cold weather.
However, Winter Gas does not eliminate the physical limitations of canister fuels. Performance still depends on temperature, fuel level and stove design.
Does Canister Size Make a Difference?
Yes, although not necessarily in the way you might expect.
A larger canister generally contains more fuel and can provide more thermal mass, which may help reduce cooling during use.
However, it does not automatically make a gas blend suitable for colder temperatures.
The fuel mixture, canister temperature and burner design remain important factors.
Does Your Camping Stove Affect Cold-Weather Performance?
Absolutely.
Many lightweight backpacking stoves screw directly onto the top of a gas canister and draw fuel in its vapour form.
These are convenient and compact, but their performance depends heavily on the pressure inside the canister.
Some remote-canister stoves use a fuel hose and a preheating tube. Models specifically designed and approved for inverted-canister operation can draw liquid fuel and vaporise it at the burner, improving cold-weather performance.
Never invert a gas canister unless the stove manufacturer explicitly states that the stove is designed for this method. Doing so with an unsuitable stove can cause dangerous flare-ups.
For more demanding winter or expedition conditions, a suitable liquid-fuel or multi-fuel stove may be a better option.
Tips for Using Camping Gas in Cold Weather
A few simple precautions can help improve reliability.
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Choose the right fuel. Select a gas blend appropriate for the temperatures you expect.
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Protect the stove from wind. Use only manufacturer-approved wind protection and maintain adequate ventilation. Never enclose or overheat the canister.
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Keep spare canisters at a moderate temperature. Store them according to the manufacturer's instructions and away from direct heat.
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Check your stove before leaving. Inspect the burner, connections and seals for damage.
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Carry a backup cooking option when appropriate. This is particularly important on remote winter trips.
Never heat a gas canister with a flame, stove, hotplate or other external heat source. Do not use camping stoves inside tents, vehicles or enclosed shelters because of the risks of fire and carbon monoxide poisoning.
Which Camping Gas Should You Choose?
For summer camping in mild conditions, a warm-weather blend may be perfectly adequate.
For general three-season use, a propane/isobutane blend such as Primus Power Gas offers greater flexibility.
For colder conditions, Primus Winter Gas is designed to provide more consistent performance, particularly during prolonged cooking.
If you regularly camp in severe winter conditions, it may also be worth reviewing your stove rather than relying solely on a different fuel.
Explore Camping Stoves and Fuel at Sub Zero
At Sub Zero, we stock a selection of camping stoves, fuel canisters and cooking accessories from established outdoor brands, including Primus and Jetboil.
Whether you're preparing for a summer camping weekend or a winter walking trip, choosing compatible equipment and suitable fuel will help you cook more reliably outdoors.
Explore our ranges:
Always follow the instructions supplied by the stove and fuel manufacturers, including guidance on fuel compatibility, ventilation and safe operating temperatures.
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