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Our Services

B.O.I Gas offers a full range of services relating to the selling, filling, testing, swapping and delivery of all types of gas in and around the Bay of Islands in the Far North of New Zealand.


Home and Business Deliveries

Large or small, we deliver to all residential, commercial, industrial and hospitality customers. We are the only gas delivery business to deliver all sizes of LPG cylinder from 2kg all the way up to the largest 90kg cylinders. We have you covered for water heating, BBQs, home heating, patio heating, cooking, camping, welding, cutting, bird canons, weeding and fork hoists.

No necessity for contract requirements.

Cylinder rentals are available for any agreed upon terms.

Please enquire for more information.

On-site Filling

Any size cylinder, with any type of fitting, can be refilled while you wait at our Waipapa filling station (opposite Farm Source). Our fillers are qualified LPG fillers and technicians and can fill your cylinder while also answering questions about the correct valves, cylinder sizes and their usage.

Tank out of test period? Don't worry. We are a certified IANZ cylinder testing laboratory and can test it on the spot.


​Gas Bottle Swap

Swap: If you have already purchased your own cylinder, swap and pay only the price of the gas. No delays because we stock a wide range of pre-filled gas cylinders ready to go.

Purchase: LPG, industrial, commercial and hospitality bottled gases online. No rental fees, contracts, administration fees, or low usage charges.

Rent : If you are after an LPG cylinder to rent on a full time basis, over the winter or just overnight, please contact us with your request and we will provide you with the best options available.


A to Z Diving - Northland Cylinder Services (Issued with Accreditation #771) is an IANZ certified Gas Cylinder Pressure Testing Laboratory complying with the Conformance Standard NZS IS O/IEC 17025:2005.

Our laboratory is certified to perform tests on the following gas cylinders with water capacities from 0.5 litres to 200 litres...

Find out more


Industrial and Commercial Gases

Whether you run a bar or are a backyard-welder, have a home brewing affliction, own a garage, or are just the fizzy drinks maker in the kitchen, we have the gas for you. Forget about monthly leasing costs, having to drive hours to get a replacement tank, testing costs or having to wait months for the return of your cylinder from filling.


As an EziSwap agent, B.O.I Gas has a cylinder for you at the ready.

Our Gas

  • Acetylene

  • Air (SCUBA, SCBA and Cascade)

  • Argon

  • Argon/Carbon Dioxide (CO2) mixes

  • Carbon Dioxide (CO2) – including Sodastream and Homebrews

  • Nitrogen

  • Nitrogen/Carbon Dioxide (CO2) mixes (Cellar mixes)

  • Oxygen

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