Commercial Gas Fitting — Wellington, Hutt Valley, Kapiti & Porirua
Restaurant kitchens, café fit-outs, school boilers, rest-home hot water, workshop heating. Commercial gas has higher loads, stricter compliance, and no tolerance for downtime on a Friday night service. Southern Plumbing handles it — from single-appliance swaps to multi-day installations.
Founded 1982. Nearly 200 years of combined trade experience on the team. Master Plumbers 25+ years. Certifying Gasfitter on staff. Call 0800 484 353 — 24/7 for service calls.
Commercial Gas Appliances & Systems
- 6- and 8-burner restaurant ranges (Garland, Waldorf, Moffat)
- Commercial griddles, chargrills, salamanders, pasta cookers
- Gas-fired pizza and combi ovens
- Large commercial water heaters — Rinnai, Rheem, Bosch manifold banks
- LPG vaporisers and bulk-cylinder installations
- Commercial space heaters and radiant tube heaters
- Ducted gas heating for offices, warehouses, schools
- Type 3 gas appliance installation and servicing
Southern Plumbing strongly recommends that only a qualified and experienced gasfitter undertakes Type 3 appliance work — the commissioning tolerances are tight and the compliance paperwork is non-negotiable.
Our 14-Step Commercial Gas Fitting Process
Commercial jobs live or die on the process. We follow the same 14-step sequence on every install so nothing gets skipped and the paperwork stacks up first time:
- Site survey & plan check
- Load calculation (MJ/hr)
- Pipe sizing to NZS 5261
- Materials spec and supply
- Pipe run installation
- Isolation valve placement
- Pressure test to regulation
- Appliance connection
- Flue and venting installation
- Commissioning to manufacturer tolerances
- Leak test post-commissioning
- Safety walkthrough with site manager
- Gas Safety Certificate issued
- Energy Work Certificate + PS3 lodged with PGDB
Service Calls & 24/7 Emergency Gas
Pilot light’s out, burner pressure is dropping, or you’ve got a smell of gas from the plant room — we know what that costs you per hour of closure. Southern has service vans across Wellington, the Hutt Valley, Kapiti and Porirua for fast response.
24/7 emergency gas response every day of the year, including public holidays. Leak detection, pressure testing, burner tuning, and full servicing of commercial appliances.
Your Job On Time, or It’s Free — same guarantee applies to commercial jobs.
Commercial Compliance — PGDB, PS3, Insurance
Your insurer, your council, and the PGDB all want to see the same thing: documented proof the gas installation was done right. We issue:
- Gas Safety Certificate on completion
- Energy Work Certificate lodged with PGDB
- PS3 Producer Statement for building consent sign-off
- Commissioning reports and pressure-test logs
- Appliance-specific compliance records
Work done to Gas (Safety and Measurement) Regulations 2010, NZS 5261 (pipe sizing), NZS 5262 (appliance safety), and NZS 5601 parts 1 & 2.
Scheduled Maintenance — Stop Breakdowns Before They Happen
Commercial gas equipment runs harder than residential — and neglected servicing is usually why equipment dies mid-service. We offer scheduled maintenance contracts for restaurants, rest homes, schools, workshops and industrial sites:
- Annual or six-monthly full service
- Burner cleaning, injector clearance, flue inspection
- Pressure checks, safety device calibration
- Thermocouple and thermopile replacement
- Full servicing records for insurance audits
Call 0800 484 353 to book a site visit and quote.
Frequently Asked Questions
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Yes — full gas rough-in and commissioning for new-build kitchens, fit-out changes, and appliance swaps. We work with hospo owners, project managers and kitchen designers across Wellington, the Hutt Valley, Kapiti and Porirua.