Editorial review 2026-09-12 · Jurisdiction: Sweden — OVK as Boverket explains it

An industrial exemption is not an office exemption — OVK stays with the building owner

Is a Swedish hall already free of mandatory ventilation control because a slide says “industrial building”, or because a dated Plan and Building Act chapter 8 file has actually tested OVK against Boverket’s table? Boverket’s OVK page, used here from the PBL Knowledge Bank, says the purpose of the rules is to secure a satisfactory indoor climate and to see that ventilation systems work as intended. Planning and Building Act (2010:900) chapter 8 section 25, in the wording Boverket quotes as amended by Act (2026:712), says that where it is specially prescribed under chapter 16 section 11 that a ventilation system’s function shall be checked, the building’s owner shall see that the check is done by a funktionskontrollant. Planning and Building Ordinance (2011:338) chapter 5 section 1 says the owner shall see that the function is checked before the system is first taken into use (first inspection) and then regularly (recurring inspection). One- and two-dwelling houses are not covered by the recurring-inspection duty. Boverket’s regulations (BFS 2017:10) section 2 exempt agricultural economy buildings, industrial buildings and secret total-defence buildings. The general advice (BFS 2012:6) says commercial kitchens in separate buildings should also be treated as industrial buildings, and that if there are office and staff rooms in an industrial building the ventilation systems that serve those rooms should still be function-checked. Boverket writes that a lease or a contractor agreement can move civil duties, but against society it is always the building’s owner who holds the OVK duty. The protocol goes to the owner and to the committee; the committee does not approve it. Those are statute and agency sentences. They are not a reserved megawatt, not an energy declaration and not a Meta Luleå, Microsoft Gävle–Sandviken–Staffanstorp, Google Horndal, EcoDataCenter Falun or atNorth SWE04 badge. The energy-declaration page already owns that later paper. The builder-duty page already owns the construction-stage owner. This page only asks which published OVK object the hall file is sitting on. This is orientation, not counsel.

Construction cranes above a generic industrial building site.
Photo Sergej Karpow on Unsplash

General orientation. Assess the specific project separately. Applies to: Readers placing an industrial-so-no-OVK, tenant-owns-ventilation or approved-protocol sentence on a Swedish hall building file.

Reading order

Name the building class before you name the exemption. Boverket’s table says industrial buildings and secret defence buildings have no first inspection and no recurring inspection. Schools and care premises recur every three years. Multi-dwelling houses, office buildings and the like recur every six years with S-, F- or FX-ventilation and every three years with FT- or FTX-ventilation. A slide that says “the hall is industrial, so OVK is off” has not shown which rooms the systems actually serve.

Then keep the owner on its own row. Chapter 8 section 25 and ordinance chapter 5 section 1 put the duty on the building’s owner. Boverket says a lease can bind the tenant as between the parties, but against society the owner remains the duty-holder. A colocation brochure that says “the customer owns the hall air” has not moved that row.

Then keep the protocol and the posted certificate on separate rows. Ordinance chapter 5 section 5 says the inspector shall give one copy of the protocol to the owner and send one copy to the committee, and shall issue a certificate with the inspection date, the result and the date of the next inspection. Section 6 says the owner shall post the certificate in a clearly visible place. Boverket, citing Mark- och miljööverdomstolen P 1373-15, says neither the Plan and Building legislation nor the Environmental Code requires the committee to approve the protocols, and that the committee is not there to settle civil disputes.

Then keep named project rows as paper classes. Microsoft names Gävle, Sandviken and Staffanstorp. EcoDataCenter names Falun. Google names Horndal. atNorth’s SWE04 note names Sollefteå. evroc names Arlandastad. None of those pages is a first-inspection protocol, a posted certificate or a classified industrial exemption for a named Swedish hall.

  • Building class before any industrial-so-no-OVK slogan.
  • The owner holds the duty against society, not the tenant.
  • The committee receives the protocol; it does not approve it.
  • A campus press note is geography, not an inspection.

What the inspection actually measures

The first inspection measures the system against the rules in force when it is taken into use, not a reserved hall megawatt. Ordinance chapter 5 section 2 asks whether function and properties match those rules, whether the system holds pollutants that can spread, whether instructions are easy to reach, and whether the system otherwise works as intended. Recurring inspection under section 3 asks whether function and properties mainly match the rules that applied when the system was taken into use, and which energy-saving measures can be taken without a worse indoor climate. The owner decides whether those energy measures are carried out.

A later interval measures the last actual inspection, not a marketing calendar. BFS section 3 says the next inspection shall fall within three or six years of the last inspection that was actually done. If the inspection was late, the next clock is counted from when the last inspection should have been done. The committee may postpone a date if there are special reasons, for example a coming works or a building that is not in use.

A later order measures a missing inspection or a defect, not a missing “approved” stamp. Boverket, citing Mark- och miljööverdomstolen P 1666-15 and P 5374-15, says the committee may order the owner to carry out OVK, but may not order the owner to hand in an approved protocol. The inspector, not the owner, is the one who must send the protocol to the committee. The committee may also order defects to be put right, or forbid use if safety is at risk.

Keep neighbouring papers off this row. Installing or substantially changing a ventilation device can need a notice under the ordinance. An energy declaration can later ask whether OVK has been done. Those are other desks. This page will not collapse them into the industrial-exemption slogan.

What named primary sources show

Boverket’s OVK page, the inspection page and the supervision page remain the dated agency desks for the owner, the industrial exemption, the office-room advice, the protocol path and the sentence that the committee does not approve protocols. Keep those objects attached to chapter 8 section 25 and ordinance chapter 5. Do not invent a data-centre paragraph.

The energy-declaration page and the builder-duty page remain other desks. Named operator rows remain land and event papers. They do not, in the files used here, name an OVK protocol for a named Swedish hall.

A matrix instead of an industrial-exemption slogan

Draw one page with paper rows and evidence columns. Building class, office-room systems, owner, first inspection, recurring interval, protocol and posted certificate are different rows. Who inspected, which date and which rooms are different columns. Empty cells stay empty.

Do not invent a Swedish hall ventilation badge from an industrial label.

ObjectWhat a source can showWhat this page will not invent
ExemptionBFS 2017:10 2 § — industrial buildings off the dutyA whole campus as exempt
Office roomsBFS 2012:6 advice — systems serving offices should still be checkedA tenant as the public-law owner
ProtocolPBF 5:5 — copy to owner and committee; no committee approvalAn “approved OVK” stamp
OrderBoverket / MÖD: order to do OVK, not to hand in an approved protocolA reserved hall megawatt

Common misreads

The first misread is to treat every hall as an industrial building and therefore as exempt. The general advice still points at office and staff rooms. The second is to treat a tenant as the public-law owner. The third is to treat a protocol as approved by the committee.

The fourth is to collapse OVK into an energy declaration. The fifth is to treat a missing “approved” stamp as the defect. The sixth is to use a campus town as proof that a dated protocol already exists.

What to ask next

Ask which dated paper anyone is quoting — a first-inspection protocol, a recurring certificate, an industrial-exemption note, a committee order, or only a slide — and which rooms it names. Ask whether office-room systems have been treated as exempt with the hall floor.

Then open the energy-declaration page, the builder-duty page and the building-permit hub. If the operator will not name the owner and the protocol, record the gap. Do not fill it from an industrial-exemption slogan. This page is not legal advice.

  1. Is the live paper an OVK protocol — or only an industrial label?
  2. Have office-room systems been treated as exempt with the hall?
  3. Has a tenant been treated as the public-law owner?
  4. Has the committee been treated as approving the protocol?
  5. Has a campus town been treated as a dated inspection?

What this does and does not prove

This page proves that Boverket already publishes OVK as an owner duty with an industrial exemption and office-room advice, and that the committee does not approve protocols — and that those facts are not a reserved hall megawatt.

It does not prove that a named Swedish hall holds a dated protocol. It does not invent a ventilation badge for Horndal or Arlandastad. It does not treat a campus press note as an inspection.

Empty cells stay empty. Until a later primary source names the owner, the rooms and the dated protocol, the OVK clock stays a method, not a census. DataCenterSweden records the method.

Sources

  1. Boverket — Mandatory ventilation control (OVK) Boverket (publication date not stated). Checked 2026-09-12.
  2. Boverket — How an OVK inspection is done Boverket (publication date not stated). Checked 2026-09-12.
  3. Boverket — Supervision of OVK Boverket (publication date not stated). Checked 2026-09-12.
  4. Planning and Building Act (2010:900) Sveriges riksdag, 2010-07-01. Checked 2026-09-12.
  5. Planning and Building Ordinance (2011:338) Sveriges riksdag, 2011-03-31. Checked 2026-09-12.
  6. Planning and Building Act guidance Boverket, 2026-01-01. Checked 2026-09-10.
  7. Microsoft opens its sustainable datacenter region in Sweden Microsoft, 2021-11-16. Checked 2026-09-10.
  8. EcoDataCenter 1, Falun EcoDataCenter, 2026-01-01. Checked 2026-09-10.
  9. Horndal, Sweden – Google Data Center Location Google Data Centers, 2026-09-01. Checked 2026-09-11.
  10. New 300MW mega site in Sollefteå, Sweden atNorth, 2026-02-23. Checked 2026-09-11.
  11. evroc finalizes land purchase in Arlandastad, Stockholm evroc, 2025-02-03. Checked 2026-09-10.

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