Installation, warranty and safety — the Australian position.
Which modification codes apply, what your registration authority is likely to ask, how the Australian Consumer Law protects you, and the documentation to keep. Written for Australian fleet, workshop and compliance staff — not adapted from an overseas market.
What applies in Australia when fitting one of these units?
Vehicle modifications are assessed under VSB 14 for light vehicles up to 4.5 tonnes GVM and VSB 6 for heavy vehicles above it, administered by your state or territory registration authority. Whether your specific installation requires approval or examiner sign-off is their decision, not ours. Because the unit generates gas on demand and stores none, there is no pressurised hydrogen inventory to assess. Our goods carry statutory guarantees under the Australian Consumer Law that cannot be excluded, and our written warranty sits in addition to them.
- VSB 14 — light vehicles up to 4.5 t GVM; VSB 6 — heavy vehicles above
- Approval pathway is set by your state or territory authority
- No hydrogen storage on the vehicle — gas is made and consumed on demand
- Installation is reversible and adds nothing to the fuel system
- ACL statutory guarantees apply and cannot be contracted out
- We supply hardware and remote support only — no installer network
- Light vehicle code
- VSB 14
- Heavy vehicle code
- VSB 6
- Gas storage
- None
- Statutory rights
- ACL — cannot be excluded
What sits over an installation here.
National Code of Practice for Light Vehicle Construction and Modification
Light vehicles up to 4.5 tonnes GVM
The reference framework state and territory authorities use to assess light-vehicle modifications. Relevant sections cover engine bay additions, electrical installation and secure mounting of components.
National Code of Practice for Heavy Vehicle Modifications
Heavy vehicles above 4.5 tonnes GVM
The equivalent framework for trucks, prime movers and heavy plant on road. Modifications in this class are commonly assessed by an Approved Vehicle Examiner in your state.
Transport for NSW, VicRoads, TMR, DoT WA, and equivalents
Registration and roadworthy administration
Adoption of the national codes and the local approval pathway differ by jurisdiction. Confirm the requirement with your own authority before a fleet-wide rollout.
Competition and Consumer Act 2010, Schedule 2
Consumer guarantees and claim substantiation
Governs your statutory guarantees on the goods, and requires that any performance claim we make be substantiated before it is made. This is why no headline savings percentage is advertised anywhere on this site.
Model WHS laws as adopted in your jurisdiction
Depot and workshop operations
Fitting and servicing occurs in your workplace under your own safety management system. Because the unit uses deionised water and stores no gas, no caustic chemical or pressurised hydrogen enters that system.
This page is general information, not legal, engineering or compliance advice. Requirements differ between jurisdictions and change over time. Confirm the position for your vehicles with your state or territory authority and a qualified examiner before a fleet rollout.
Two warranties, and how they interact.
Your statutory guarantees
Under the Australian Consumer Law our goods come with guarantees that cannot be excluded. You are entitled to a replacement or refund for a major failure, to compensation for any other reasonably foreseeable loss, and to repair or replacement where goods are not of acceptable quality.
Our written warranty
The published product warranty covers the unit itself and is in addition to your statutory rights, never a replacement for them. Terms, duration and exclusions are set out on the warranty page.
Your vehicle manufacturer
A separate relationship we are not party to. Ask them in writing before fitting. They cannot void your statutory guarantees simply because an accessory is present, but they can decline a claim for a fault the accessory caused — which is why documentation matters.
The points an examiner or safety officer asks about.
No stored gas
Hydrogen and oxygen are generated only while the engine runs and are drawn straight into the intake. There is no cylinder, no accumulator and no residual inventory when the engine is off.
No caustic chemicals
The PEM stack runs on deionised water. No potassium hydroxide or other caustic electrolyte is carried, handled or disposed of, so nothing of that kind enters your WHS chemical register.
Electrical isolation and fusing
The unit draws from the existing 12 V or 24 V supply through its own fused, ignition-switched circuit so it cannot operate with the engine stopped. Wiring and fusing detail is in the installation guide.
Gas line integrity
A bubbler and non-return valve sit between the cell and the intake. The line is small-bore, routed clear of heat and moving parts, and secured — the same discipline as any under-bonnet line.
Secure mounting
The unit must be mounted so it cannot move under vibration, braking or impact loads, which is the point examiners assess most often under the VSB codes.
Full reversibility
Nothing is added to the fuel system and no engine internals are altered, so the vehicle can be returned to its original configuration. That materially simplifies both compliance and resale conversations.
We make no emissions-compliance or certification claim. Fitting a unit does not alter a vehicle's certified emissions status and is not a remedy for an existing defect notice.
Documentation checklist.
- 01
Invoice, model and serial number for each unit
- 02
Installation date, vehicle identification, odometer or hour-meter reading
- 03
Photographs of mounting, wiring, fusing and gas-line connection
- 04
Baseline consumption record taken before fitting
- 05
Written correspondence with the vehicle or engine manufacturer about warranty
- 06
Resin filter replacement log at 6–9 month intervals
- 07
Any state authority or examiner correspondence and sign-off
- 08
Your own WHS risk assessment for the fitting and servicing task
Need the technical documentation pack for an examiner or insurer? Email office@combustionenhancement.com with the model and vehicle type.
Practical next steps.
- · Installation guide — the nine-step fitting sequence with wiring and gas-line detail.
- · Safety & compliance — alarms, shutdowns and the on-demand design principle.
- · Installation & support — what we supply and where our responsibility ends.
- · Contact engineering — for documentation packs and fleet rollout questions.
No projected, typical or expected fuel-saving figure is published. Actual results vary materially with engine condition, duty cycle, load profile, fuel quality, installation and operating conditions. A controlled field evaluation on your own equipment, with baseline data captured before installation, is required before any commercial projection.
Questions.
Do I need approval to fit a hydrogen enhancement unit in Australia?
- Vehicle modifications in Australia are assessed under the National Code of Practice — Vehicle Standards Bulletin 14 for light vehicles up to 4.5 tonnes GVM, and Vehicle Standards Bulletin 6 for heavy vehicles above that. Whether a particular installation needs approval or engineering sign-off is a decision for your state or territory registration authority and an approved vehicle examiner, based on how the unit is mounted, powered and connected on that specific vehicle. We supply the hardware and the technical documentation; we cannot certify your vehicle and we do not act as an approving authority.
Will fitting this void my vehicle or engine warranty?
- That is a question for your vehicle or engine manufacturer, and the answer varies by brand, contract and fleet agreement. Ask them in writing before fitting. Under Australian Consumer Law a manufacturer cannot void your statutory guarantees merely because an accessory is fitted, but they can decline warranty for a fault the accessory actually caused. The installation is reversible and adds nothing to the fuel system, which makes the before-and-after position easier to document — keep photographs and records either way.
What are my rights under the Australian Consumer Law?
- Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage, and to have goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure. Our written warranty is in addition to these rights, not a substitute for them.
Is there hydrogen stored on the vehicle?
- No. Gas is produced on demand only while the engine is running and is consumed immediately in the intake. There is no pressurised cylinder and no accumulated volume, which is the single most important point in any hazard assessment or discussion with an examiner, insurer or safety officer.
Who can install the unit?
- A suitably qualified automotive or heavy-diesel technician. We supply hardware and remote technical support only — we do not operate an installer network and we do not attend site. Where a state authority requires an approved vehicle examiner or engineering signatory to assess the modification, that person must be engaged locally.
What documentation should I keep on file?
- The invoice and serial number, the installation date and odometer or hour-meter reading, photographs of the mounting, wiring and gas-line connection, your baseline consumption record, the manufacturer correspondence about warranty, and the resin filter replacement log at 6–9 month intervals. Fleets carrying out modifications at scale should hold this alongside their existing maintenance records.
Continue reading.
Hydrogen combustion enhancement
What it is, how PEM gas reaches the cylinder, and what it does not do.
Engine performance improvement
Flame speed, burn completeness and load response on diesel engines.
Fuel efficiency
How to baseline and measure litres per 100 km or litres per hour.
Emissions reduction
Soot, particulate and unburnt-fuel behaviour, and how to test it.
Visible smoke reduction
Smoke opacity findings per study, with the NOx trade-off disclosed.
Remote-site fuel logistics cost
Landed cost versus pump price, and why the same percentage moves more money.
Generator-set classes
Camp, prime, standby, rental, telecom, irrigation and ship's service sets compared.
Idle & part-load duty cycles
Reefers, camp gensets and high-idle plant — where the literature reports most room.
Hydrogen with biodiesel blends
Per-study findings for hydrogen enrichment on biodiesel, NOx disclosed.
Installation guide
Nine-step fitting sequence: mounting, wiring, gas line, commissioning.
Safety & compliance
On-demand gas, no storage, alarms, shutdowns and reversibility.
Troubleshooting
Alarms, low gas output, water quality and no-start diagnostics.
Case studies & field results
Published operator data and trial methodology.
Compare PEM systems
A-450 to DH-Power side by side: displacement, output, current draw.
Does it actually work? Evidence review
The published literature, the FTC/EPA history and the ACL context.
How it works
Gas path and established physics, explained with diagrams.
PEM vs alkaline
Membrane on water versus caustic KOH: servicing, purity, cost.
Sizing combined gas
Why PEM and alkaline gas-volume benchmarks are not interchangeable for ICE sizing.
Four hydrogen technologies
Enhancement vs H2ICE vs fuel cell vs chemical generation.
Compared with Hydrogen Fuel Systems
Honest comparison with the Perth-based Gen alkaline range.
Compared with H2i Technology
Hardware, pricing and evidence transparency versus the Victorian supplier.
Compared with dynaCERT HydraGEN
PEM versus alkaline, published price versus dealer quote, Verra versus ACCU.
Compared with HYDI
The South Australian manufacturer: UniSA testing, field history and quote path.
Mining fleets
Haul trucks, dozers, drill rigs and site gensets: unit selection and dust.
Marine
Workboats, charter, fishing and ship's service gensets — no gas stored aboard.
Agriculture
Tractors, headers, pump sets and farm trucks across seasonal duty.
FAQ
Answers on fitment, water, warranty, freight and duty cycles.