2020 NFPA 31 Standard for the Installation of Oil-Burning Equipment

NFPA 31, Standard for the Installation of Oil-Burning Equipment 2020 edition establishes the mandatory requirements for the safe installation of equipment that burns liquid fuel — including boilers, air heaters, and space heaters — in residential, commercial, and industrial occupancies. Heating equipment accounts for over $1 billion in fire damages annually in the United States, making proper installation to this standard a critical safety obligation for designers, contractors, and installers responsible for liquid fuel burning systems.

Who Uses NFPA 31

The 2020 edition is the standard of reference for mechanical engineers, heating system designers, plumbing and HVAC contractors, inspectors, and authority having jurisdiction (AHJ) officials responsible for the design, installation, and inspection of oil-burning heating equipment in residential, commercial, and industrial settings.

What's New in the 2020 Edition

The 2020 edition introduces targeted updates reflecting changes to referenced standards and fuel classifications, including:

• Revised Chapter 3 definitions for heating fuel and used oil.
• Updated list of acceptable fuels in Chapter 4 based on current ASTM reference standards.
• New annex material added to explain changes regarding acceptable fuel classifications.
• Revised specifications for acceptable piping and fitting materials in Section 8.2 based on updates to applicable reference test standards.
• Updated references throughout based on extracted text revisions.

Edition Advisory

Verify which edition of NFPA 31 is currently adopted in your jurisdiction before purchasing.

Stay compliant with the oil-burning equipment installation standard relied on by mechanical engineers, heating contractors, and inspectors across residential, commercial, and industrial applications.

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