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Maryland Boiler & Pressure Vessel Inspections

Insparisk is an Authorized Inspection Agency serving building owners and property managers across Maryland. We perform annual and biennial boiler and pressure vessel inspections, handle National Board filings, and keep your certificates current.

Maryland's Private Boiler Inspection Model

Maryland no longer performs state boiler inspections directly. Building owners now contract with an Authorized Inspection Agency or a National Board commissioned inspector to keep their boilers and pressure vessels in compliance. As an Authorized Inspection Agency, Insparisk performs the inspection, files with the National Board, and issues the Certificate of Inspection your insurer and jurisdiction expect.

We work with commercial, multifamily, institutional, and industrial properties of every size, from a single low-pressure heating boiler to a fleet of high-pressure vessels across multiple buildings.

High-Pressure Boilers

Power boilers and high-pressure steam systems on the more frequent schedule.

  • Annual internal inspection
  • Annual external inspection
  • Safety valve and control testing
  • National Board filing
  • Certificate of Inspection issued

Low-Pressure & Hot Water Boilers

Heating boilers, hot water boilers, and most pressure vessels on the standard schedule.

  • Biennial (every two years) external inspection
  • Internal inspection when required
  • Safety control verification
  • National Board filing
  • Certificate of Inspection issued

Maryland Boiler Compliance Essentials

What We Inspect

Our Maryland boiler inspections cover the full system:

Choosing a Maryland Boiler Inspection Company

Because Maryland relies on private agencies, choosing the right one matters. A missed filing or an expired certificate can create an insurance gap or a violation. When comparing Maryland boiler inspection companies, look for a commissioned Authorized Inspection Agency, direct National Board filing, clear written reports, and proactive tracking of your certificate anniversary. Insparisk provides all four, statewide, with a single point of contact for your portfolio.

Want the full background on how Maryland's system works? Read our Maryland Boiler & Pressure Vessel Inspection Guide for inspection frequency, certificates, penalties, and how to choose an Authorized Inspection Agency. New to boiler compliance generally? Start with how often commercial boilers need to be inspected.

Frequently Asked Questions

Does Maryland still do state boiler inspections?

No. Maryland transitioned to a private model. Building owners contract with an Authorized Inspection Agency or a National Board commissioned inspector. Insparisk is an Authorized Inspection Agency serving the entire state.

How often are boiler inspections required in Maryland?

Frequency depends on the equipment. High-pressure boilers generally require annual internal and external inspection, while most low-pressure and hot water boilers require a biennial inspection. The schedule runs from your certificate anniversary, not the calendar year.

What is a Certificate of Inspection and why does it matter?

After a passing inspection, a Certificate of Inspection is issued and must be posted on or near the boiler. Most commercial insurance policies require a current certificate, and operating without one can void coverage.

What are the penalties for non-compliance?

Operating a boiler without a current certificate is a violation of Maryland regulations and can bring fines from $1,000 to $5,000 per violation, along with potential insurance gaps if an incident occurs.

Do you handle the National Board filing?

Yes. We perform the inspection, file with the National Board, issue your Certificate of Inspection, and provide the documentation for your records and insurer.

What areas of Maryland do you serve?

We serve the entire state, including Baltimore, Montgomery County, Prince George's County, Anne Arundel, Howard County, Frederick, Harford County, and the Eastern Shore.

Schedule Your Maryland Boiler Inspection

Stay compliant with an Authorized Inspection Agency that handles the inspection, filing, and certificate.

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