Gas & Plumbing

Home & Garden90% confidence

Gas & Plumbing Australia is an Australian plumbing, gas fitting, electrical and air-conditioning services company that operates multiple trade brands, including Metropolitan Plumbing and Jim’s Plumbing in several states.

Adelaide, South Australia, Australia
gnp.net.au
Owned by Plumbing and Gas Pty Ltd

About Gas & Plumbing

Gas & Plumbing Australia (gnp.net.au) is an Australian trade services company based in Adelaide, South Australia. They coordinate and operate several well‑known service brands, including Metropolitan Plumbing and Jim’s Plumbing, across multiple states. Through these brands they provide residential and commercial plumbing, gas fitting, electrical, hot water, and air‑conditioning installation and repair services. Typical jobs include emergency callouts, leak detection and repairs, blocked drains, hot water system repairs and replacements, gas appliance installation, and general maintenance work.

A charge from Gas & Plumbing Australia, GNP, Metropolitan Plumbing, or Jim’s Plumbing may appear on your bank or card statement after you have used one of these services at your home or business. This can include one‑time callout fees, labour and parts for a completed job, deposits taken before major work, or final balances paid on completion. You may also see charges processed via mobile EFTPOS terminals onsite, phone payments taken by their call centre, or follow‑up payments for additional works agreed to after the initial visit. In some cases, your bank may first show a pending or pre‑authorisation amount if your card was used to secure a booking or confirm available funds, which then converts to the final charge once the job is completed and invoiced.

If you’re unsure about a Gas & Plumbing charge, start by checking recent service visits to your property under any of their brands (Metropolitan Plumbing, Jim’s Plumbing, or related trade names) and look for an emailed or printed invoice that matches the amount and date. Compare the statement descriptor (the exact wording on your statement) with the business name and ABN on your invoice. If you still have questions, visit gnp.net.au or the specific brand’s website to find their customer service phone number and contact form, then reach out with your full name, service address, approximate date of service, and the last 4 digits of the card used so they can locate your job and invoice. For disputes or billing errors, they can usually provide a copy of the invoice, explain any callout or after‑hours surcharges, and help arrange corrections or refunds where appropriate; you can also contact your bank if you suspect unauthorised use of your card.

Bank Statement Variations

1 known variations

These are the raw merchant codes that appear on bank and credit card statements that we've identified as belonging to Gas & Plumbing.

  1. GAS & PLUMBING AUSTR CUMBERLAND PA AUS

Frequently Asked Questions

Why did I get a charge from Gas & Plumbing Australia or GNP after a visit from Metropolitan Plumbing or Jim’s Plumbing?

Gas & Plumbing Australia operates multiple brands, including Metropolitan Plumbing and Jim’s Plumbing, so your card statement may show “Gas & Plumbing”, “GNP”, or a similar descriptor even if the technician’s uniform or van had a different brand. In many cases, payments for work performed by these brands are processed centrally under Gas & Plumbing Australia’s merchant account. Check the invoice you received from the attending technician or via email; the total and date should line up with the charge on your statement.

What types of amounts does Gas & Plumbing Australia typically charge for?

Charges can cover callout or attendance fees, labour, parts and materials, and any additional surcharges such as after‑hours or weekend rates agreed to at the time of booking. You might see a single combined charge for the full job, or separate charges if you paid a deposit first and the balance later (for example, when ordering a new hot water system). The exact amount will depend on the specific work completed at your property and any quoted pricing you accepted.

Why do I see a pending or temporary Gas & Plumbing charge that later changes or disappears?

If your card was used to secure a booking or confirm available funds, Gas & Plumbing Australia or one of its brands may place a temporary authorisation on your card. This appears as a pending charge and is a standard card-verification process. Once the job is completed and the final invoice amount is confirmed, either the authorisation is voided and replaced with the actual charge, or it simply expires and disappears from your statement within a few business days.

How can I get a copy of my invoice or receipt for a Gas & Plumbing or Metropolitan Plumbing charge?

Most jobs include an emailed invoice or receipt sent to the email address you provided when booking or when the technician was onsite. If you can’t find it, contact the relevant brand (Metropolitan Plumbing, Jim’s Plumbing, or another associated brand) via the phone number or contact form on their website, or via gnp.net.au. Provide your name, service address, approximate date and time of the visit, and the last 4 digits of your card so they can locate your job and resend the invoice or receipt.

Can I cancel or reschedule a booking without being charged by Gas & Plumbing Australia?

Cancellations and reschedules are generally handled through the specific brand you booked with (for example, Metropolitan Plumbing or Jim’s Plumbing). As long as you cancel or reschedule with reasonable notice before the technician is dispatched, you typically will not be charged a callout or attendance fee, but policies may differ by location and timing. Contact the brand’s customer service number as soon as possible to confirm whether any fees apply and to adjust your appointment.

How do I dispute a Gas & Plumbing Australia charge or request a refund?

First, contact the customer service team for the brand that carried out the work, using the details on your invoice or via gnp.net.au. Explain the issue (for example, duplicate charge, incorrect amount, or work not completed as agreed) and provide your invoice number, service address, and the exact amount and date of the charge. They can review the job notes and payment records and, where warranted, arrange an adjustment or refund back to your original payment method. If you suspect fraud or do not recognise the transaction at all, notify both Gas & Plumbing (with as much detail as you can) and your bank or card issuer immediately.

Why is the name on my bank statement different from the name on the plumber’s van?

Because Gas & Plumbing Australia operates multiple trade brands, the branding you see on uniforms and vehicles (such as Metropolitan Plumbing or Jim’s Plumbing) may not match the billing name used by their central payment system. Your card statement may show “Gas & Plumbing”, “GNP”, or a similar descriptor even though the onsite brand name is different. This is normal for businesses that process payments under a parent or head-office entity; your invoice should reference both the brand and the underlying company details.

How can I contact Gas & Plumbing Australia about a mystery charge on my account?

Start by visiting gnp.net.au or the website of the brand you remember dealing with (Metropolitan Plumbing, Jim’s Plumbing, etc.), where you’ll find phone numbers and contact forms for customer support. When you call or write, have your full name, service address, approximate date and time of any recent plumbing, gas, electrical, or air‑conditioning work, plus the last 4 digits of the charged card and the exact amount. Providing this information helps their team quickly locate your job record, explain the charge, and correct any billing errors if needed.

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