Buying a Caravan: Do You Need An External / Slide-Out Kitchen? [Decision Guide]

The fridge is the single most important appliance in your caravan, and the one most likely to cause grief if you get it wrong. It is the biggest power draw in most vans, it runs 24 hours a day, and in the Australian heat a poorly chosen fridge will let your food spoil at the worst possible time. So when you are buying a van, the type of fridge it comes with, or the one you plan to fit, deserves a lot more thought than most people give it.

This guide cuts through the jargon and helps you make the actual decision: which type of fridge suits the way you will travel. For the deep technical comparisons and specific product picks, we will point you to the detailed guides as we go.

The Real Decision: How Your Fridge Stays Cold

Strip away the brochures and there is really one question that drives everything else: how does the fridge make cold? There are two answers, and they behave completely differently on the road.

A compressor fridge works like the one in your house, using a compressor and refrigerant, and runs on 12V (and usually 240V too). A three-way, or absorption, fridge has no moving parts and can run three ways: 240V, 12V, or LPG gas. That gas option is the whole appeal, and also where most of the confusion comes from.

Get this choice right and the rest of your fridge decisions, size and format, fall into place easily. Get it wrong and you will either be chasing power you do not have, or eating warm food in the Kimberley. This is the decision that matters most.

Compressor (12V) Fridges

Compressor fridges have become the default for serious travellers, and for good reason. They cool hard, they cool fast, and they do not care how hot it is outside. On a 42 degree day in the Pilbara, a compressor fridge keeps humming while a three-way struggles to hold temperature.

They are also efficient with power, drawing from your 12V system in short bursts as the compressor cycles. Pair one with a decent battery and some solar and it will run indefinitely off-grid without you thinking about it. They also work at any angle, so an unlevel camp or a bumpy track is no problem.

The trade-off is that all their power comes from your battery. A compressor fridge only makes sense if your electrical system can feed it, which for most people means lithium plus solar. If your van has a small battery and no solar, a compressor fridge will flatten it. For the vast majority of Big Lappers, that power setup is worth building anyway.

Three-Way (Absorption) Fridges

Three-way fridges have one genuine superpower: they run on gas. That means you can sit at a remote free camp for a week, run the fridge off a 9kg bottle, and barely touch your battery. For travellers with a modest electrical setup who spend a lot of time off-grid, that is a real advantage, and it is why three-ways are still fitted to plenty of vans.

The catch is performance in heat. Absorption cooling is weak when the ambient temperature climbs, which is exactly the problem in most of Australia for half the year. They are also slow to cool down, and they need to be close to level to work properly, so a sloping camp can stop them cooling altogether. Running one on 12V while you drive barely cools at all; it is really only there to hold temperature between gas and mains.

Three-ways suit a specific traveller: someone chasing cooler parts of the country, or someone who wants gas independence without investing in a big battery and solar system. For full-time travel through the hot north, most people find them frustrating.

This is the decision most people agonise over, so if you want the full head-to-head with real-world running costs, read the dedicated comparison.

Built-In Upright Or Portable Chest?

Once you have settled the cooling type, the second decision is format. Most caravans come with a built-in upright fridge, and for a van that is usually the right call: it sits at bench height, holds a week or more of food for a couple, and looks and works like a normal kitchen fridge.

The alternative, or often the addition, is a portable compressor fridge, the kind you also see in the back of a ute or wagon. These chest-style fridges are brilliant as a second fridge or a freezer, they cool exceptionally well, and you can pull them out for a day trip or a fish. Plenty of travellers run a built-in upright inside plus a portable in the car for overflow and drinks.

If you are choosing between them for your main cold storage, the upright wins on convenience and capacity for van life. The portable wins on flexibility and raw cooling grunt. For most, it is not either-or: the upright is the van fridge, and a portable is the handy extra.

What Size Do You Actually Need?

Size is where people either overspend or run short, and it comes down to how you travel and how often you can restock. As a rough guide, a couple is well served by a fridge in the 90 to 150 litre range. A family of four wants 150 to 220 litres, and often a separate freezer or portable to cope. Solo travellers can happily run smaller, though a bit of extra room for cold drinks and leftovers never hurts.

The real driver is how remote you go. If you are regularly a week or more from a decent supermarket, bias toward more capacity and more freezer space so you can stock up. If you are mostly hopping between towns, you can run leaner. Bigger fridges cost more to run, so match the size to your genuine needs rather than buying the largest one on offer.

Fridge size also has to fit the van, both physically and on payload, so it ties directly into your kitchen layout and weight budget. It is worth thinking about the whole kitchen together rather than the fridge in isolation.

So, Which Fridge Should You Choose?

Here is the straight recommendation, by how you travel.

Full-timers and anyone heading north: compressor, without hesitation. It handles the heat, works at any angle, and with lithium and solar it just runs. Build the power system to suit it and you will never think about the fridge again.

Budget or occasional off-gridders with a small electrical setup: a three-way can make sense, especially if you travel in cooler months and value gas independence over outright cooling performance. Go in knowing its limits in the heat.

Families and remote travellers: compressor upright as the main fridge, plus a portable compressor fridge or freezer for overflow. The extra capacity is worth more than any single large unit.

If you are buying a new van and it comes with a three-way as standard, do not just accept it by default. For most modern travel, spending the difference to spec a compressor fridge is one of the best upgrades you can make.

For the full technical detail, running costs, and specific models worth buying, dig into the complete fridge guide.