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Gas Conversion Certificate

A Gas Conversion Certificate documents the conversion of a gas appliance from one fuel type to another (typically natural gas to propane or vice versa). It records the conversion kit used, orifice changes, pressure adjustments, and post-conversion testing to verify safe operation.

IFGC, NFPA 54, manufacturer conversion instructions, state/local codesValid: One-off (no expiry)

What it covers

Appliance identification
Original and new fuel type
Conversion kit details and orifice sizes
Operating pressure verification
CO readings and combustion analysis
Leak test results

Who needs a Gas Conversion Cert?

Homeowners switching fuel types

Contractors performing conversions

Property managers

Utility companies

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Frequently asked questions about Gas Conversion Cert

Can any gas appliance be converted?

Not all gas appliances can be converted between fuel types. The manufacturer must offer an approved conversion kit for the specific model. Using non-approved kits or field-modifying orifices is unsafe and violates code.

Do I need a permit for a gas conversion?

In most jurisdictions, yes. Converting a gas appliance from one fuel type to another typically requires a permit and inspection, as it involves changes to the gas supply and appliance operation.

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