Minnesota · Boilers

The boiler inspection rules in force in Minnesota now.

Minn. Stat. 326B.95-326B.998 and Minn. R. ch. 5225; most recent ASME BPVC, National Board Inspection Code and ASME standards adopted by reference (Minn. R. 5225.0090), ASME CSD-1 for automatic controls (5225.1180). Enforced by DLI Construction Codes and Licensing boiler and pressure vessel inspectors; insurance-company inspectors for insured objects (Minn. Stat. 326B.99). Checked on the primary source; the state record was last reviewed 2026-11-12.

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Boilers in Minnesota

Checked on the source

In force

Minn. Stat. 326B.95-326B.998 and Minn. R. ch. 5225; most recent ASME BPVC, National Board Inspection Code and ASME standards adopted by reference (Minn. R. 5225.0090), ASME CSD-1 for automatic controls (5225.1180)

Statute 326B.958 (re-read Oct 19, 2026): after the initial inspection, boilers must be inspected at least annually and pressure vessels not excepted by 326B.988 at least every two years; registration at initial inspection, renewed annually (historical boilers excepted). Inspection by a commissioned inspector with 48 hours' notice (5225.2200).

Source: primary document

Who enforces it

DLI Construction Codes and Licensing boiler and pressure vessel inspectors; insurance-company inspectors for insured objects (Minn. Stat. 326B.99)

Statewide layer. County and city amendments sit on top; confirm the local office for the address.

What changes next

Rulemaking pending

326B.958 re-read Oct 19, 2026 in the 2025 Minnesota Statutes edition: annual boiler and biennial pressure-vessel inspection unchanged; no ch. 5225 docket on DLI's construction codes rulemaking index

The federal layer

There is no federal boiler certificate; the state program below is the whole obligation, with the ASME Boiler and Pressure Vessel Code and the National Board Inspection Code as the referenced standards.

What a building has to do

1 recurring duties

These apply when the building has the equipment or fits the type named. The frequency is the standard one; your local official can set a stricter one, so confirm it for the address.

Annual

Boiler: certificate inspection per state programState boiler law · State boiler inspection program · Not yet checked line by line against the source.

Questions about the boiler inspection rules in Minnesota

Which boiler inspection rules apply in Minnesota today?

Minn. Stat. 326B.95-326B.998 and Minn. R. ch. 5225; most recent ASME BPVC, National Board Inspection Code and ASME standards adopted by reference (Minn. R. 5225.0090), ASME CSD-1 for automatic controls (5225.1180). Statute 326B.958 (re-read Oct 19, 2026): after the initial inspection, boilers must be inspected at least annually and pressure vessels not excepted by 326B.988 at least every two years; registration at initial inspection, renewed annually (historical boilers excepted). Inspection by a commissioned inspector with 48 hours' notice (5225.2200).

Who enforces the boiler inspection rules in Minnesota?

DLI Construction Codes and Licensing boiler and pressure vessel inspectors; insurance-company inspectors for insured objects (Minn. Stat. 326B.99).

What changes next for the boiler inspection rules in Minnesota?

Rulemaking pending. 326B.958 re-read Oct 19, 2026 in the 2025 Minnesota Statutes edition: annual boiler and biennial pressure-vessel inspection unchanged; no ch. 5225 docket on DLI's construction codes rulemaking index