Best Caravan Generator in Australia: Types, Rooftop Aircon, Weight and Park Rules

The best caravan generator for most vans is a 2.5 to 3.5kVA petrol inverter, which runs a typical rooftop aircon. Heat and restarts catch small units out. Here's how to pick caravan generators and where to run one.

No aircon in your van? You can skip straight to the small units below. If you do have one, read the aircon section first. It's the part that saves you buying twice.

Best Generator Type for Caravans in Australia

For nearly every caravan, the answer is a petrol inverter generator. It's the lightest, quietest way to power your 240V appliances off-grid, and this guide assumes it. You'll find the full range under generators.

Petrol Inverter Generators With Pure Sine Output

Your van isn't a shed. Your aircon's control board, your lithium battery charger, the TV and your laptop all want clean power.

Dometic's advice on using its rooftop aircons with a generator says the generator should have pure sine wave output. An inverter generator gives you that. It also throttles back when you're only powering the fridge, so you use less fuel and make less noise.

Here's how an inverter generator compares with a regular one on fuel, noise and weight.

Open-Frame, Diesel and Dual Fuel Generators

Open-frame generators give you more watts for the price, but you pay in weight and noise. The Westinghouse WHXC3750 Pro makes 3,000W continuous and weighs 52kg. The inverter iGen3750S makes the same 3,000W at 27kg.

Diesel earns its keep on long, steady use, not your weekend away. The petrol vs diesel generator guide shows where that line falls. If you'd like the option of LPG, see the pros and cons of a dual fuel generator.

Small Generators for Caravans Without Aircon

No aircon means you want the lightest, most compact unit for your fridge, lights and chargers. The Champion 2.5kVA at 17kg and the Hyundai HY2000Si at 21kg both do that, and you can lift either into the ute on your own.

Watch the badge, though. Running output is what a generator holds all day, and it sits under the number on the side. The HY2000Si is badged 2,000W but holds 1,600 watts. An ExplorOz member made the same point years ago: units with "2000" in the name are more like 1.6kVA.

Don't buy for a heatwave you'll see once a year, either. A full-time caravanner who carries one says they hardly use it. A Caravaners Forum member needed theirs for the aircon only once, in a hot January. For the sizing maths, see what size generator you need for a caravan.

Running a Caravan Rooftop Aircon Off a Generator

It's 38 degrees at a free camp and your aircon has been humming since four. You switch it off for tea. Half an hour later you hit the button again, and the generator's overload light comes on instead.

Your van stays hot and the night drags. Owners describe exactly this on the forums: a small generator meeting a compressor that's still under pressure.

The fix is headroom. About 3,000W of running output, like the Hyundai HY3500i or Briggs & Stratton P3500, brings your aircon back after tea. The van's cool by the time you turn in. For other air conditioners, see using an air conditioner with a generator.

Truma Aventa Power Draw and Start-Up Current

Once it's going, your aircon draws less power than most guides suggest. Truma lists the Aventa comfort at 4.2A in cooling mode, about 1,000W. That's about a third of a 3,000W generator's continuous output.

Start-up is the catch. Truma lists a start-up current of 28A for 150 milliseconds. That's more than 6,000VA for an instant, more than three times the 2,000W surge figure on a small inverter.

None of the generators in the table below lists a starting figure that high. A bigger unit just has more in reserve when the compressor kicks in. That's why one owner's 2kVA copes and the next owner's trips.

Small Generators, Hot Restarts and Older Aircons

Owners are split on 2kVA-class generators, and both camps have a point.

Plenty of owners use one for a rooftop aircon. Commenters on Adelaide RV's FreshJet 7 video power theirs from a 2kVA Honda. One ran an older Ibis unit that way for years in 55-degree Pilbara heat. Another, on a Kings 3000W generator review, says a 2.2kVA Kings handles their Ibis 4 and microwave.

Plenty don't. On ExplorOz, one owner's Honda 2000i cuts out the second time the aircon kicks in. Another owner's generator struggles to restart the aircon in 42-degree heat after refuelling.

On Caravaners Forum, one member's 2kVA couldn't get a new Coleman Mach 8 going. Another runs the same model on a Honda 20i. The same thread mentions owners who sold their 2kVA and stepped up to 3kVA to cope. Most of these threads date from 2008 to 2015.

A commenter on Searle's RV Centre's generator test nails the pattern. Their Honda 2.2 handled the aircon fine until the compressor cycled, then couldn't bring it back against the head pressure.

So what's the call? If your aircon matters, buy about 3,000W of running output. A 2kVA might do the job, but a hot restart is where it lets you down.

Soft Start, Rating Plates and Other 240V Loads

A few things tip the odds your way. First, check your aircon's installation manual. The same Dometic page says to size the generator to it, and that you'll need either a hard start capacitor, which some models include, or its SmartStart soft start.

Read the rating plate or spec sheet, not the brochure. Truma lists 2,400W of cooling power for the Aventa comfort, but what matters to your generator is the 4.2A draw and the 28A start-up current.

Better still, test the generator on your aircon before you pay for it, as an ExplorOz member advises. Another owner in that thread says to start the aircon on low and turn it up once the compressor's going.

Then switch off the other big loads while the aircon runs: the electric hot water, battery charger, kettle and microwave. As one ExplorOz member puts it, there are only so many watts to go around.

Not sure your aircon and generator will get along? Ring the store on 03 7056 6732 with both model numbers and we'll tell you straight.

Best Caravan Generators by Weight, Noise and Output

These are the generators we stock that suit a caravan. Every figure below comes from the product pages, checked 12 September 2026, except the iGen2600's noise, which comes from Westinghouse's own spec sheet.

Stocked Caravan Generators Compared

Look at the running output column first, then the weight you'll lift. Noise figures aren't all measured the same way, so read the conditions.

Generator	Running output	Starting output	Weight	Noise	Price
Champion 2.5kVA inverter	1,900W	2,500W	17kg	53 dBA at 7m	$999
Hyundai HY2000Si	1,600W	2,000W	21kg	58 dB(A) at 7m	$698.50
Westinghouse iGen2600	2,200W	2,600W	22.5kg dry	54 dB(A) at quarter load, 64 dB(A) at full load, at 7m	$1,799
Briggs & Stratton P2500	1,800W	2,500W	22.7kg	58 dB(A) at 7m	$1,399
Hyundai HY3500i	3,000W	3,500W	23kg	60 dB(A) at 7m	from $1,354.10
Westinghouse iGen3750S	3,000W	3,750W	27kg	not published	$2,239
Briggs & Stratton P3500	2,900W	3,500W	38.6kg	about 66 dBA at 7m	$1,999
Westinghouse iGen4500AS	3,700W	4,500W	not published	not published	$2,249
Briggs & Stratton P4500	3,700W	4,500W	47kg	not published	$2,599
Champion 4.5kVA enclosed	not published	4,500W	37kg	59 dB(A)	$1,995
Champion 4.5kVA open frame	3,650W	4,500W	47kg	64 dB(A) at 7m	$1,595
Hyundai HY4000SEi	4,000W	not published	55kg	59 dB(A) at 7m	$3,200

Champion 2.5kVA and Hyundai HY2000Si for Vans Without Aircon

These are the lightest pair at 17kg and 21kg, and the cheapest at $999 and $698.50. Either handles your fridge, lights and chargers overnight without a second thought.

Neither is a rooftop aircon generator. At 1,900 and 1,600 watts continuous, there's no headroom for the compressor spike, and the product pages say so.

If you only need power a few times a year, a budget price is fine. The reviewer behind the Kings 3000W video says they've used theirs about five times. A commenter says the same model has powered their caravan for seven years with regular oil changes.

Hyundai HY3500i and Briggs & Stratton P3500 for Rooftop Aircon

The HY3500i makes 3,000W and the P3500 makes 2,900W of running output. That's about three times the Aventa comfort's roughly 1,000W draw, with room for your fridge on top.

The HY3500i is the value pick at 23kg, 60 dB(A) at 7 metres and from $1,354.10. The P3500 costs $1,999 and carries a five-year warranty. The trade-off is 38.6kg and about 66 dBA at 7 metres, the loudest figure in the table.

Want something lighter? The Westinghouse iGen3750S is 27kg with a wireless remote. Its product page says it's the wrong pick if you run an air conditioner, though, so it suits vans without one.

Briggs & Stratton P4500 for Aircon Plus a Microwave

The P4500 makes 3,700W of running output, which covers the aircon plus your fridge, lights and charging. Pick it if your van has a microwave or a bigger aircon, or you want a margin in the heat.

The P4500 has wheels, a wireless remote and CO Guard, which shuts the engine down if carbon monoxide builds up around it. At 47kg, lifting it into the ute is a two-person job or a ramp.

The Westinghouse iGen4500AS in the table also makes 3,700W, but its two-wire automatic starting suits a fixed setup, and its product page points touring buyers to another model.

Champion doesn't publish a continuous figure for its 4.5kVA enclosed unit, so ring the store before you pair it with your aircon. And at 55kg, the Hyundai HY4000SEi is too heavy for most caravan setups.

Generator Weight on the Drawbar, Tray or Ute

Where you carry your generator matters as much as what it weighs. RAC WA says most popular tow vehicles allow a maximum tow ball mass of 10% of their braked towing limit. A good aim is about 10% of your van's weight on the ball.

A 47kg generator and a full jerry can on the drawbar add to that ball weight. RAC WA also warns that weight behind the rear axle lifts the front of your car, which costs you braking and steering feel. In a dual-cab tray it can overload the rear axle even when you're under GVM.

Carry it low and forward where you can, and lock it up at camp.

Generator Rules in Caravan Parks and National Parks

Check before you go. Rules change park by park, and plenty of places don't allow generators at all.

Caravan Park Generator Rules and Quiet Hours

Caravan parks set their own rules. BIG4 Sydney Lakeside Holiday Park doesn't permit generators at any time, and its quiet hours run from 10pm to 8am. At BIG4 Colonial Holiday Park, you need express permission from management to use one.

We couldn't find a state rule covering generators in caravan parks, so ring the park before you book.

National Park Generator Rules by State

Here's what each parks agency says, checked 12 September 2026. Tasmania and the ACT only turned up campground-level rules, so treat those as examples and check your park's page.

Queensland Parks and Forests

Queensland Parks says generators are not permitted in most parks or forests. Where they're allowed, each park's page sets the noise limit and hours. With a medical certificate, you can use a low-decibel generator of 65 dB(A) for essential devices in some areas where they're otherwise banned.

NSW National Parks

NPWS allows generators only in some designated campgrounds. You get one per group, it goes closer to your camp than your neighbours', and local noise curfews apply. They can also be banned for a time during fire bans or bird roosting.

Victorian National Parks and State Forests

Parks Victoria sets rules park by park. At Wilsons Promontory, generators are not permitted. At Warby-Ovens National Park, on a Total Fire Ban day you can only use one if 3 metres around it is cleared of anything flammable.

In state forests, the Victorian Government's camping rules let you use a generator if its exhaust has a spark arrestor and you keep 1.5 metres of cleared space around it. You also need water or a fire extinguisher on hand.

South Australian National Parks

National Parks and Wildlife Service SA tells you to check with your local parks office to find out whether you can use a generator.

Western Australian National Parks

WA parks allow generators at some campgrounds at set times, usually 8am to 9pm, and not at all at others. You need to keep at least 3 metres clear around it and put it closer to you than to other campers. Never leave it unattended while it's going, and don't use it on total fire ban days.

Tasmanian National Parks

At Mill Creek Campground in Fortescue Bay, Tasman National Park, generators are permitted but must be switched off by 9pm. That's one campground's rule, not a statewide one.

Northern Territory Parks and Reserves

The NT's campground list marks each campground as a generator area or not. Of the 23 listed campgrounds that take caravans, 6 are generator areas, 14 don't allow them, and 3 don't say.

ACT Namadgi National Park

At Honeysuckle Campground in Namadgi National Park, motorised generator use is prohibited.

Heading somewhere that bans them? Queensland Parks points to solar panels and inverters as the option you can use anywhere. A portable power station is the quiet, off-grid way to keep your fridge going.

Noise at 7 Metres and Camp Etiquette

Your generator is louder to the van next door than it is to you. An ExplorOz member says one sitting a few metres from a van annoys campers over 100 metres away.

Put your generator closer to your own camp, as NSW and WA parks both ask, and switch it off early. For the quietest units, see the guide to the quietest generator.

Clearance, Carbon Monoxide and Fire Ban Days

Energy Safe Victoria says to use a generator only outside, in a well-ventilated area, never indoors or in an enclosed space. It gives off carbon monoxide you can't see or smell, which can kill quickly.

Point the exhaust away from anything flammable, and let the generator cool down before you refuel it. Clearance rules differ by place: 1.5 metres in Victorian state forests, and at least 3 metres in WA parks. Fire ban days can rule it out altogether.

For the lead and the inlet, see how to plug a generator into a caravan. On a remote trip, carry a jerry can of unleaded and spare oil. It's cheap insurance.

So which is the best caravan generator for you?

Without aircon, go the Champion 2.5kVA or HY2000Si. With a rooftop aircon, get about 3,000W of running output, like the HY3500i or P3500. For aircon plus a microwave, step up to 3,700W with the P4500.

Still weighing it up? Ring the store on 03 7056 6732, text 0476 330 590, or try the Generator Finder.

Related reading: what size generator you need, generator fuel consumption, the best inverter generator in Australia and how to keep your generator from being stolen while camping.