How to Convert Your Van into a Self-Contained Campervan

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DIY or Pay for the Installation?

If you have the skills, these modifications can be done yourself.

Water tanks, sinks, pipes, etc. can be purchased in hardware stores like Mitre 10 and Bunnings Warehouse. Items like a cassette toilet (which needs to be permanently fixed to the van) can be purchased from specialised motorhome/RV stores.

Otherwise, we suggest employing a plumber that is registered with the Plumbers, Gasfitters and Drainlayers Board (the ones responsible for maintaining the New Zealand Self-Contained Motor Vehicles Register), and/or a vehicle certifying authority to install compliant systems for you. That way, they will install your water tanks and sinks to the correct requirements.

Find out more about issuing authorities and testing officers in How to Get Your Campervan Certified Self-Contained.

© Backpacker Car

Or Get a Pre-Installed and Certified Self-Contained Campervan From Backpacker Car!

For camping vehicles already kitted out with the kitchen, fresh water and waste water tanks, a fixed toilet, a fixed rubbish bin, a comfy double bed and more, check out the offering from Backpacker Car.

Their certified self-contained campercars and campervans are all kitted out and can even be reserved before you arrive in New Zealand.

At the end of your trip, the team offer a buyback scheme to even make the selling process a breeze.

Check out their offering of cars and campervans for sale at backpackercar.co.nz.

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Tips for Installing a Fresh Water Tank and Grey Waste Water Tank into a Campervan

Most vans are converted into a 2-berth campervan by having a double bed, a driver’s seat and a passenger’s seat.

To meet the requirements for the self-containment certification for a 2-berth campervan, you will need one 25 L fresh water tank and one 25 L waste water tank. That’s 12 L in each tank for each person for up to three days.

Remember, tanks must connect to your fixed toilet as per the manufacturer’s instructions.

Fresh Water Tank

Use a 25 L narrow non-toxic opaque plastic can/canister as your fresh water tank. The fresh tank needs an opaque supply pipe to the sink and a vent.

The fresh water tank with a tap can also be stored above the sink with the tap above the sink.

Grey Water Tank

The grey water should drain from the sink through a looped hose water trap and into one 25 L opaque plastic can/canister used for grey wastewater. The hose needs to be watertight and leak-proof.

Additionally, a 6 mm vent pipe needs to be fitted to your waste water tank that rises above the bottom of the sink and terminates at the exterior of the van.

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Where to Store the Water Tanks?

In order to pass a self-certification inspection, both water tanks need to be secure when the vehicle is in motion. They can be stored in a secure cupboard or secured with a removable bungy cord.

Additionally, they need to be easily accessible for emptying and filling without spillage.

You must be able to store the connecting hose and vent in a separate locker, container or sealable plastic bag for when they are disconnected from the tank.

Most vans store tanks under the sink or the freshwater tank can sometimes be above the sink. Note that some fixed toilets may require extensive plumbing and space under the vehicle for the black water tank.

Does Your Tank Need a Gauge?

If the level of the water can be seen through the tank, then the tank does not require a gauge to measure the water level.

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Tips for Installing a Toilet in a Campervan

According to the Plumbers, Gasfitters, and Drainlayers (Self-Contained Vehicles) Regulations 2023, all toilets must be permanently fixed to the vehicle in accordance with the manufacturer’s instructions. In other words, portable toilets are not acceptable to be certified self-contained.

Note that a permanently fixed toilet may require some wiring if the flush is battery-powered.

The toilet also needs to be readily accessible for use within the campervan with plenty of head, legs and elbow room, even with the bed made up.

Remember, the toilet needs a black water tank capacity of 3 L per person for three days, so that’s 6 L minimum in a 2-berth campervan.

© BLUETTI

Tips for Installing an Electricity Supply

Another important consideration if you are converting a van for camping is to have an electricity source.

Although not a mandatory requirement of the Self-Containment Certification, you’ll need it to power any appliances, such as a fridge, electric barbecue or oven, for charging your devices or even to power a heater on those chilly New Zealand nights.

Portable Power Stations

The most versatile and easiest electricity source for first-time van conversions is a portable power station. These are basically large power banks with multiple outlets to use for all sorts of appliances.

Some of our favourites are the BLUETTI AC300 and AC500 with a huge 3,000 W or 5,000 W of power and a base 3,072 Wh of battery capacity with a modular system that can be upgraded to hold a massive 18,423 Wh! The power stations have dual charging; solar panels and AC inputs, as well as several output options, including four AC outlets, four USB-A, a USB-C, an RV port, a cigarette lighter port and a DC 5521 output.

Check out our 5 Best Power Stations for Camping for a more detailed comparison or head straight to bluettipower.com.au for all of their offerings.

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Other Requirements for a Self-Contained Campervan

Two items not mentioned above, but listed in the requirements needed to certify a self-contained vehicle, are the evacuation hose and the fixed rubbish bin.

Evacuation Hose

In a small 2-berth van and by using the water tank methods that we suggest above, an evacuation hose is not required, as the water tanks are portable and can be emptied straight from the tank.

However, the tanks still need to have the ability to be removed without spillage and the connecting hoses need to be stored in a sealable plastic bag, container or separate locker when disconnected from the tanks.

Rubbish Bin (with a Lid)

You don’t need to go too fancy with this one. Just a simple rubbish bin with a lid that is secured inside the vehicle is all you need to meet the self-containment requirement.

You can secure your rubbish bin with cords or screw it onto a cupboard door, for example. Get creative if you have to.

For more information on the definition of a motor caravan, see How to Get Your Campervan Certified Self-Contained.

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