Connecting a gas appliance at home seems straightforward, but in New Zealand the rules around gas work are strict — and for good reason. Whether you're hooking up a new BBQ on the deck or installing a califont (instantaneous hot water heater) in the laundry, understanding what you can legally do yourself versus what must be done by a licensed gasfitter could save your life and keep your home insurance valid.
Understanding NZ Gas Regulations
Gas work in New Zealand is governed by the Gas (Safety and Measurement) Regulations 2010 and overseen by the Plumbers, Gasfitters and Drainlayers Board (PGDB). The regulations distinguish between work a homeowner can do and restricted work that must be carried out — and certified — by a licensed gasfitter. Getting this wrong isn't just illegal; it can void your home insurance and, more importantly, put your whānau at serious risk.
What a Homeowner Can Legally Do
The good news is that connecting a portable LPG BBQ is generally something you can do yourself, provided you follow the rules carefully. Here's what is typically permitted for homeowners:
- Connecting a portable LPG BBQ to a standard LPG cylinder using a compliant hose and regulator that came with the appliance
- Replacing an LPG cylinder on an existing, already-compliant portable appliance
- Checking and tightening existing fittings on a portable appliance (not modifying pipework)
The key word here is portable. If the appliance simply connects to a swap-and-go LPG bottle and isn't permanently plumbed in, you're generally in the clear to connect it yourself.
What Is Restricted Work — and Why It Matters
Restricted gas work must be performed by a licensed gasfitter and, in most cases, requires a Certificate of Compliance (CoC) to be issued on completion. This includes:
- Installing, modifying, or repairing any fixed gas pipework (including running a gas line to a built-in BBQ or outdoor kitchen)
- Installing a califont or continuous flow hot water heater — this is always restricted work
- Connecting any appliance to natural gas mains supply
- Installing or modifying gas meters, regulators, or valves
- Converting an appliance from LPG to natural gas (or vice versa)
- Installing a permanently plumbed-in BBQ or pizza oven connected to a fixed gas line
A califont, in particular, involves both gas pipework and hot water plumbing — meaning you may need both a licensed gasfitter and a licensed plumber, or a tradesperson who holds both licences. Always check that your tradesperson is registered on the PGDB website before work begins.
Connecting a Portable LPG BBQ Safely — Step by Step
If you're connecting a portable BBQ to a swap-and-go cylinder, follow these steps carefully:
- Check your hose and regulator — ensure they comply with NZS 5263 and are in good condition with no cracks, kinks, or perishing. Replace if in doubt.
- Use the right regulator — most NZ LPG BBQs use a POL or Type 21 fitting. Never force a connection.
- Connect in a well-ventilated area — never use or store LPG cylinders indoors or in enclosed spaces.
- Turn the cylinder valve slowly — open it fully, then back a quarter turn.
- Check for leaks — apply a soapy water solution to all connections and watch for bubbles. Never use a naked flame to check for leaks.
- Keep cylinders upright — LPG cylinders must always be stored and used in an upright position.
- Store cylinders safely — keep them outside, away from heat sources, and out of direct sunlight.
LPG Cylinder Safety Tips
- Swap-and-go cylinders (such as those from Rockgas or Elgas) must be inspected and refilled by the supplier — never attempt to refill them yourself.
- Check the cylinder's test date stamped on the collar. Cylinders must be retested periodically.
- If you smell gas, turn off the cylinder valve immediately, move away from the area, and ventilate. Do not operate any switches or flames.
Califont Installation — Always Use a Licensed Gasfitter
A califont (also called a continuous flow or instantaneous hot water heater) must be installed by a licensed gasfitter. This is non-negotiable under NZ law. The installation must also comply with the NZ Building Code clause G12 (water supplies) and may require a building consent depending on the scope of work. Check with your local council and visit MBIE Building Performance for guidance on consent requirements.
After installation, your gasfitter must issue a Certificate of Compliance. Keep this document safe — you'll need it if you sell your home or make an insurance claim.
Choosing the Right Gas Appliance
When purchasing a BBQ or califont, look for products that carry NZ/Australian gas approval markings. Reputable suppliers at Bunnings and Mitre 10 stock appliances suited to NZ gas types. Always check whether the appliance is configured for LPG or natural gas — they are not interchangeable without a proper conversion by a licensed gasfitter.
When to Call a Professional
Call a licensed gasfitter if you need to:
- Install or relocate a califont or any fixed hot water appliance
- Run gas pipework to a new location (outdoor kitchen, fire pit, garage)
- Connect any appliance to natural gas mains
- Investigate a suspected gas leak in your home's pipework
- Commission a new gas appliance after a renovation
WorkSafe NZ takes gas safety seriously, and unlicensed gas work can result in significant fines. More importantly, faulty gas installations are a leading cause of house fires and carbon monoxide incidents in New Zealand.
You can find qualified, licensed gasfitters in your area at tradedirectory.co.nz — always check their PGDB registration before work begins.