The Best Portable Air Conditioners For Caravans

A portable air conditioner sounds like the easy answer to a hot van, and sometimes it is. But the honest truth is that a portable cools a corner, not your whole caravan, and half the “portable air conditioners” sold to campers are not air conditioners at all. This guide sorts the real compressor units from the evaporative coolers, and tells you which one actually earns a spot in your setup.

Portables: What They Actually Are (And Aren’t)

Before you spend a cent, understand that “portable cooling” for a caravan splits into two completely different things, and the gap between them is enormous.

A true portable air conditioner has a compressor, exactly like your rooftop unit or the split system at home. It removes heat and drops the temperature no matter how humid it is. The catch is that it has to dump that heat somewhere, so it needs a vented exhaust hose running outside, and almost every one runs on 240V. That means a powered site, a generator, or a big inverter and battery bank. It is real cooling, but it is not free of strings.

An evaporative cooler is a different animal. It blows air over a wet pad, and the water evaporating pulls a few degrees out of the air. It sips power, needs no exhaust, and costs a fraction of the price. It is not an air conditioner. In dry inland heat it works a treat. In the humid Top End, Kimberley or coastal Queensland summer it does almost nothing, and it adds moisture to air that is already soggy.

Will a Portable Actually Cool Your Van?

Set your expectations honestly and you will be happy. Expect too much and you will be cranky and out of pocket.

A portable compressor unit like the KickAss puts out around 3,100 BTU. Your rooftop reverse cycle unit puts out 10,000 to 14,000 BTU. So a portable will not cool an eight metre van in 40°C. What it will do well is knock the edge off a single space: the bed you sleep in, a swag, an annexe, or a pop top corner. Point it at one zone, close that zone off as much as you can, and it earns its keep.

Where a portable genuinely shines:

• Spot cooling the bed: get a night’s sleep on a stinking evening without running a generator all night for the rooftop.
• Annexe, tent or swag: cool a space that has no rooftop unit at all.
• Vans with no rooftop fitted: a stopgap for camper trailers, off road vans and older setups.
• Dry inland touring (evaporative): the Red Centre, the Nullarbor and western NSW where the air is bone dry.

What to Look For When Buying

The specs that matter for a portable are not the same ones you weigh up for a rooftop. Here is what counts.

Our Top Picks

Four options, and they are genuinely different tools for different jobs. Read the “best for” line on each before you buy, because the wrong one for your climate is money wasted.

1

Best Pick

~$499

KickAss 400W Portable Air Conditioner

Real compressor cooling that fits a caravan budget

This is the one to buy if you want genuine air conditioning you can move around. It is a proper compressor unit putting out 3,100 BTU, so it cools no matter the humidity, and at roughly 420W running it will run off a decent inverter and battery, not just a powered site. At 13kg it is manageable, it is quiet at around 50dB, and it uses efficient R290 refrigerant. Point it at a bed, a swag or a small annexe and it does exactly what you want. Just remember it is 240V, it needs the exhaust vented outside with about 50cm of clearance, and it cools a space up to roughly 6 square metres, not a whole van.

Cooling

3,100 BTU

Power

240V, ~420W run

Weight

13kg

Noise

≤50dB

✔ Pros

• Real compressor cooling, works in humidity
• Low running draw for a 240V unit
• Continuous drain option, so no tank emptying
• Quiet and reasonably priced

✗ Cons

• 240V only: needs mains or a capable inverter
• Startup surge of roughly 1,400 to 1,500W
• Must vent the exhaust outside
• Cools a small zone, not the whole van

Our verdict: the best portable for most big lappers who want genuine cooling for a bed or annexe without a rooftop sized budget or power bill.

Check Price at KickAss →

2

Best Off Grid

~$1,500 to $1,800

Zero Breeze Mark 2

The only genuinely battery run air conditioner here

If you free camp and there is no mains or generator in your world, this is the standout. The Zero Breeze Mark 2 is a compressor air conditioner that runs on 24V DC, drawing a low 240W or so, and with its optional dedicated battery it will run cordless. That makes it the one true off grid portable on this list. Be clear eyed about what you are buying though: 2,300 BTU cools a very small enclosed space, so think tent, swag or rooftop tent rather than the living area of a caravan. It is also dear for the cooling you get, and battery runtime is limited. For a solo traveller or a couple cooling a sleeping zone away from power, nothing else does the job.

Cooling

2,300 BTU

Power

24V DC, ~240W

Off Grid

Optional battery

Best Zone

Tent or swag

✔ Pros

• Genuine compressor cooling on battery power
• Runs cordless with the dedicated battery
• Low running draw for real air conditioning
• Truly portable and self contained

✗ Cons

• Expensive for the cooling output
• 2,300 BTU suits a tent, not a van
• Limited battery runtime

Our verdict: the pick if you need real cooling with no power hookup, as long as you accept it cools a tent sized space.

Check Price →

3

Best Budget

~$100 to $150

Companion Maxi Evaporative Cooler

Cheap, effective personal cooling, for dry heat only

For a fraction of the price of a compressor unit, the Companion Maxi will make a real difference on a hot dry day. It draws next to nothing, runs off its own battery for 3 to 6 hours, holds 1.2 litres of water and drops the temperature in your immediate zone by a few degrees. There is no exhaust, no wiring and no fuss. Two things you must accept: this is not an air conditioner, and it only works in dry inland heat. Take it to the Red Centre or the Nullarbor and you will love it. Take it to Cairns in February and it will do nothing except add moisture to already humid air. Buy it knowing exactly what it is.

Type

Evaporative

Tank

1.2L

Battery

3 to 6 hours

Works In

Dry heat only

✔ Pros

• Cheap and genuinely useful in dry heat
• Tiny power draw, runs off its own battery
• No exhaust, no wiring, grab and go
• Light and easy to store

✗ Cons

• Not an air conditioner, only a few degrees
• Useless and counterproductive in humidity
• Small tank needs frequent refills
• Cools a personal zone only

Our verdict: superb value if you tour dry inland Australia, but the wrong tool entirely for the tropics.

Check Price →

4

Niche Pick

~$1,500 to $2,500+

Cold King 12V Air Conditioner

A 12V compressor unit borrowed from the truck world

Cold King units come out of the truck sleeper cab world, where drivers need cooling overnight without idling the engine. They are genuine 12V or 24V compressor air conditioners, so unlike the KickAss they do not need 240V at all. That sounds perfect for a caravan until you look at the current draw: a Cold King can pull 40A or more at 12V, which will empty a modest battery bank in a hurry. To run one properly you want serious lithium capacity and a matched install, and it is a more involved fit than a plug in portable. It is niche for a reason, but for an off grid setup with a big battery bank and a willingness to engineer it in, it is a real option worth knowing about.

Power

12V / 24V DC

Draw

~40A+ at 12V

Origin

Truck cab AC

Install

Involved

✔ Pros

• Genuine compressor cooling on 12V, no 240V needed
• Suits a purpose built off grid rig
• Proven in the truck sleeper cab market

✗ Cons

• Heavy current draw needs a big lithium bank
• More of an install than a portable
• Niche support in the caravan world

Our verdict: only for the off grid builder with the battery capacity to feed it. Most people are better served by a rooftop unit or the KickAss.

Check Price →

Quick Comparison Table

Here is how the four options stack up side by side.

The Verdict

For most big lappers, the KickAss 400W Portable Air Conditioner is the one to buy. It is real cooling that works in any climate, it runs off an inverter, and it costs a fraction of a rooftop unit while doing a job a rooftop cannot: cooling a swag or annexe. Just treat it as spot cooling and vent the exhaust properly.

If you free camp with no mains or generator, the Zero Breeze Mark 2 is the only genuine off grid answer, provided you accept it cools a tent sized zone. If you travel dry inland Australia and want cheap relief, the Companion Maxi is brilliant value, as long as you never expect it to work in the tropics. And the Cold King 12V stays niche: a real option only for the off grid builder with the battery bank to feed it.

The one thing no portable does is replace a rooftop reverse cycle unit for cooling a whole van through a Queensland summer. If that is your reality, put your money there and use a portable as the supplement it was always meant to be.