Leaks & Faults

Gas Leak Detection, Fault Finding & Appliance Servicing Auckland

Gas leak detection, appliance repairs and safety inspections by experienced Certifying Gasfitters across the wider Auckland region.

If you've noticed the smell of gas, your appliance isn't performing properly, your gas bill has increased unexpectedly, or your hot water system has stopped working, it's important to have the problem investigated by a qualified Gasfitter.

We specialise in fault finding across all types of gas installations throughout Auckland. From residential homes and commercial kitchens to central heating systems, boilers and LPG installations, we use specialist testing equipment to locate faults, confirm appliance safety and restore your system to safe operation.

Whether it's a small gas leak or a complex combustion issue, we provide professional diagnosis, repairs and Certification where required.

Gasfitter pressure testing a continuous flow water heater in Auckland
On-site
Pressure testing
Our Gas Fault Finding Services

Complete gas safety inspections and repairs

No matter what type of gas appliance you own, we can diagnose and repair the fault.

Gas leaks
Low gas pressure
Appliance faults
Pilot light failures
Burner faults
Yellow flames
Poor combustion
Carbon monoxide concerns
Gas regulators
LPG systems
Natural gas systems
Commercial kitchens
Central heating
Boilers
Hot water cylinders
Continuous flow water heaters
Gas hobs
Cookers
Ovens
Commercial catering equipment
Leak Detection

Gas leaks should never be ignored

We use calibrated electronic gas detectors together with pressure testing equipment to accurately locate even very small gas leaks. Where necessary we isolate sections of the installation to identify exactly where the leak is occurring before repairs begin.

Signs of a possible gas leak

  • Smell of gas
  • Hissing sounds
  • Higher than normal gas bills
  • Pilot lights going out
  • Appliances failing to ignite
  • Headaches or nausea when appliances are operating
  • Dying vegetation around underground gas pipes
  • Gas detector alarms activating
Cylinder leak investigationIsolation valve fitted for testingGas meter and regulator checkLPG regulator inspection
Servicing

Appliance Safety Inspections

Gas appliances should be serviced regularly to ensure they remain safe and efficient. A comprehensive inspection can identify issues long before they become expensive repairs.

Appliance condition
Burner inspection
Ignition operation
Flame quality
Flame failure devices
Gas pressures
Gas leaks
Flue condition
Ventilation
Appliance operation
Safety controls
Combustion Analysis

Flue Gas Analysis

One of the most important tests we perform. Modern combustion analysers let us measure exactly how efficiently an appliance is burning gas, cleaner combustion means less gas used and significantly lower carbon monoxide.

What we measure

  • Oxygen (O₂)
  • Carbon dioxide (CO₂)
  • Carbon monoxide (CO)
  • Flue temperature
  • Combustion efficiency
  • Excess air
  • Draft performance

Poor combustion can indicate

  • Incorrect gas pressure
  • Dirty burners
  • Blocked heat exchangers
  • Damaged injectors
  • Blocked flues
  • Ventilation problems
  • Incorrect appliance settings

These tests allow us to accurately tune appliances for both safety and efficiency.

Combustion Safety

Stable blue flame, every time

Gas appliances should produce a stable blue flame. The warning signs below often indicate incomplete combustion and should be investigated immediately.

Yellow flames
Lifting flames
Lazy flames
Sooting
Excessive condensation
Carbon deposits
Overheating
Strong combustion odours
Pressure Testing

Correct pressure = reliable performance

Many appliance faults are caused by incorrect gas pressure rather than the appliance itself. We perform the full suite of pressure tests to isolate and confirm the cause.

Pressure tests we perform

  • Installation pressure testing
  • Operating pressure testing
  • Standing pressure tests
  • Regulator testing
  • Pipe sizing assessment
  • Gas meter testing
  • LPG regulator checks
Repairs

Common Faults We Repair

Continuous flow water heaters

  • Ignition faults
  • Temperature fluctuations
  • Error codes
  • Low hot water flow
  • Fan faults
  • Blocked heat exchangers
  • Water leaks
  • Gas valve faults
  • PCB faults

Gas hot water cylinders

  • Rheem Stellar service
  • Vulcan Freeloader replacements
  • Burner assemblies
  • Thermostats
  • Gas control valves
  • Pilot assemblies
  • Thermocouples
  • Expansion issues
  • Flue faults

Gas hobs & cookers

  • Burners not lighting
  • Uneven flames
  • Clicking igniters
  • Faulty ignition modules
  • Gas valves
  • Thermocouples
  • Flame failure devices
  • Low flame performance

Central heating boilers

  • Hydronic heating boilers
  • Radiator systems
  • Underfloor heating
  • Pumps
  • Expansion vessels
  • Pressure loss
  • Heating controls
  • Combustion faults

Commercial kitchens

  • Commercial cookers
  • Deep fryers
  • Wok burners
  • Chargrills
  • Combination ovens
  • Salamanders
  • Commercial water heaters
  • Commercial boilers
  • Commercial catering equipment

LPG & natural gas systems

  • LPG bottle installations
  • Regulators
  • Automatic changeover valves
  • Pigtails
  • First-stage regulators
  • Second-stage regulators
  • Gas meters
  • Pipework
  • Underground gas lines
Continuous flow brands

We hold spares and service manuals for the major continuous flow brands.

RinnaiRheemBoschPalomaDux
Recent Work

Fault finding & servicing across Auckland

On-site cylinder leak investigation
On-site cylinder leak investigation
Pressure testing a continuous flow heater
Pressure testing a continuous flow heater
Gas meter & regulator check
Gas meter & regulator check
LPG regulator & changeover inspection
LPG regulator & changeover inspection
Isolation valve fitted for safe testing
Isolation valve fitted for safe testing
Robertshaw gas valve diagnosis
Robertshaw gas valve diagnosis
Rheem Stellar burner service
Rheem Stellar burner service
Continuous flow heater strip-down
Continuous flow heater strip-down
Hydronic boiler combustion service
Hydronic boiler combustion service
Older Vulcan Freeloader assessment
Older Vulcan Freeloader assessment
Gas Appliance Servicing

Routine servicing prevents most failures

Many appliance failures can be prevented through regular maintenance. Routine servicing improves:

  • Safety
  • Efficiency
  • Reliability
  • Appliance lifespan
  • Fuel consumption
  • Manufacturer performance

Verification Certificates

Following repairs, servicing or safety inspections, we can issue a Gas Verification Certificate where applicable, confirming the installation or appliance has been inspected, tested and verified as safe and compliant in accordance with the Plumbers, Gasfitters and Drainlayers Board (PGDB).

  • Gas Verification Certificates
  • Gas Safety Records
  • Pressure Test Results
  • Appliance Commissioning Documentation
  • Compliance Documentation
  • Service Reports
When to call

Contact us immediately if…

You smell gas
Your appliance keeps shutting down
Your pilot light won't stay lit
Flames are yellow instead of blue
You have poor hot water performance
Your central heating isn't heating properly
Your commercial kitchen equipment isn't performing correctly
You suspect a gas leak
You've purchased a property and want the gas appliances inspected
Your appliances are overdue for servicing
Why choose us

Diagnosis first, replacement last

Unlike many companies that simply replace appliances, we specialise in diagnosing the actual cause of the fault. Accurate fault finding saves our customers money while ensuring every gas appliance operates safely and efficiently.

Residential homes
Commercial kitchens
Restaurants
Hotels
Central heating systems
Hydronic heating
Boilers
Gas hobs
Continuous flow water heaters
Gas cylinders
LPG systems
Natural gas installations
New homes
Renovations
Commercial buildings
Auckland Gas Leak Detection Specialists

Safety inspections, leak detection & fault diagnosis.

Specialist testing equipment, professional repairs and Certification, right across Auckland.

Call 09 889 9830
FAQ

Frequently Asked Questions

How often should gas appliances be serviced?

Most residential gas appliances should be serviced every 2, 3 years, while commercial appliances often require annual servicing due to heavier use. Always follow the manufacturer's recommendations.

What is a flue gas analysis?

A flue gas analysis measures combustion gases such as oxygen, carbon dioxide and carbon monoxide. It confirms that an appliance is burning efficiently and safely and helps identify problems before they become dangerous.

Can you repair older gas appliances?

Yes. We regularly repair older gas appliances where parts are available. If replacement is a better long-term option, we'll explain why and recommend suitable alternatives.

Can you issue a Gas Verification Certificate?

Yes. Where the work meets the applicable regulatory requirements, we can carry out the necessary testing and issue a Gas Verification Certificate after the installation or repair has been verified as safe.

Need a Certifying Gasfitter today?

Free quotes across Auckland. Same-day callouts available.