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Establishment profile

MULTISTACK, LLC

1065 MAPLE AVENUE, SPARTA, WI, 54656
Operated by Multistack LLC · 1 of 2 establishments
333415 — Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
EIN 721524879

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OSHA inspections
2
over 16 years
Violations
15
$53,051 in penalties
SVEP
YES
Severe violator program
Accident investigations on record
2 National Emphasis Program inspections

Summary

MULTISTACK, LLC has accumulated 15 OSHA violations across 2 inspections over 16 years of recorded history, with $53,051 in total assessed penalties.

The establishment sits in the 84th percentile for violations within its industry-state peer group of 57 employers. Inspection frequency runs at the 50th percentile. The most recent enforcement activity was recorded 2 years ago.

Federal records were found in 1 of 15 sources. Sources without matching records returned empty for this establishment.

Agency coverage

MULTISTACK, LLC appears in OSHA workplace safety and FMCSA motor carrier registration records only. No matching records were found in WHD wage enforcement, MSHA mine safety, EPA environmental compliance, NLRB labor relations, OFLC visa and labor certification (historical), SAM.gov federal debarment, CMS nursing home enforcement, UVA Corporate Prosecution Registry, CPSC product recalls, or NHTSA vehicle recalls.

OSHA workplace safety

Inspections
2
0.1 / yr · last 16 yrs
Violations
15
0.9 / yr
Penalties
$53,051
$3,537 avg / violation
73% serious27% other
Inspection trigger · complaint
2 of 2

100% of inspections at this establishment produced violations, with 2 inspections producing serious-or-greater violations.

Most-cited OSHA standards

Top OSHA standards cited at this employer, ranked by citation count. Standards (CFR sections) cluster citations into safety themes -- machine guarding, lockout-tagout, hazard communication, fall protection, process safety, etc. A concentration on one or two sections reveals a pattern that individual citations don’t. 15 distinct standards shown · 15 citations in this view · $53,051 in penalties.

CFR sectionCitationsInspectionsTotal penaltyFirst citedLast cited
29 CFR 1910.0028 B1511$12,098Feb 2024Feb 2024
29 CFR 1910.0178 M0211$12,098Feb 2024Feb 2024
29 CFR 1910.0184 E0111$10,150Feb 2024Feb 2024
29 CFR 1926.0454 A11$8,864Feb 2024Feb 2024
29 CFR 1910.0213 I0111$2,450Mar 2010Mar 2010
29 CFR 1904.0031 B0211$1,613Feb 2024Feb 2024
29 CFR 1904.0029 B0111$1,613Feb 2024Feb 2024
29 CFR 1910.0147 C0111$1,225Mar 2010Mar 2010
29 CFR 1910.0178 L01 I11$980Mar 2010Mar 2010
29 CFR 1910.1200 E0111$980Mar 2010Mar 2010
29 CFR 1910.1200 H0111$980Mar 2010Mar 2010
29 CFR 1910.0184 E02 II11—Feb 2024Feb 2024
29 CFR 1910.0030 A0311—Feb 2024Feb 2024
29 CFR 1910.1030 C01 I11—Feb 2024Feb 2024
29 CFR 1904.0029 B0311—Feb 2024Feb 2024

Source: OSHA inspection citations (violation_detail). CFR section codes can be looked up at osha.gov/laws-regs for the formal standard text. Per-inspection detail and the specific violation descriptions are available by expanding individual inspections below.

Peer comparison

84th

Worse on violations than most other employers in NAICS 3334 within WI. Peer group: 57 employers. This establishment has 15 OSHA violations; peer median is 3.

Fewer violationsMore violations
Penalty percentile
100th
peer median: $3,318
Inspection frequency
50th
peer median: 2

Safety self-report (OSHA 300A)

Recordable injury rates the employer filed with OSHA’s Injury Tracking Application. DART covers cases with days away, restricted, or transferred; TRIR is the total recordable case rate.

DART rate
2.4
vs industry
+1.3
TRIR
10.4
vs industry
+8.3

Reported for 130 average annual employees at this establishment.

Source: OSHA ITA Form 300A (employer self-reported). Rates are per 100 full-time equivalent workers. Establishments below the ~10-FTE threshold are not required to report.

Industry benchmark

Industry avg TRIR
2.1
BLS SOII 2024
Industry avg DART
1.1
BLS SOII 2024
Self-reported TRIR
10.4
OSHA ITA Form 300A (employer self-reported)

BLS rates reflect industry-wide averages. Self-reported figures come from OSHA’s Injury Tracking Application; absence of self-reported data does not necessarily indicate non-compliance — many establishments fall below the ITA reporting threshold.

Inspection breakdown

Complaint
2

Complaint- and accident-triggered inspections are stronger risk signals than routine planned inspections.

OSHA severe injury reports

No severe injury reports (hospitalization, amputation, or loss of an eye) on file under 29 CFR 1904.39 for MULTISTACK, LLC. Verify directly with Occupational Safety and Health Administration →

Activity timeline

Data refreshed
Weekly
First OSHA inspection
—
Most recent activity
2 years ago

No federal enforcement activity has been recorded against this establishment in 2+ years. Most recent activity: 2 years ago. Data on this page is refreshed weekly.

Wage & Hour Division (WHD)

No WHD wage, overtime, or child-labor enforcement cases on file for MULTISTACK, LLC. Verify directly with Wage and Hour Division →

Mine safety (MSHA)

No MSHA mine safety violations on file for MULTISTACK, LLC. Verify directly with Mine Safety and Health Administration →

Labor relations (NLRB)

No NLRB unfair labor practice charges or union representation cases on file for MULTISTACK, LLC. Verify directly with National Labor Relations Board →

Visa & labor certification (OFLC) — historical

No H-1B, H-2A, or H-2B labor condition applications on file (historical data only — DOL ended OFLC publication) for MULTISTACK, LLC. Verify directly with Office of Foreign Labor Certification →

Environmental compliance (EPA)

No EPA inspections or formal enforcement actions on file for MULTISTACK, LLC. Verify directly with Environmental Protection Agency →

Motor carrier safety (FMCSA)

DOT number
3178785
Operation
C

Federal Motor Carrier Safety Administration — DOT-regulated carrier registration and fleet data.

Federal criminal prosecution record

No federal criminal prosecutions, plea agreements, or deferred-prosecution agreements on file for MULTISTACK, LLC. Verify directly with UVA Corporate Prosecution Registry →

Federal contracts

This location

Obligated (5-yr)
$4.5M
Obligated (all-time)
$19.5M
Awards
555
Top agency
Department of State
$19.4M
Top agencies by obligation (this location)
Department of State$19.4M
Department of the Interior$67K
National Aeronautics and Space Administration$13K
Department of Defense$8K
General Services Administration$0
Largest awards (top 50 of 555)
  • Department of State
    CAGS - ''IGF::OT::IGF''
    contract · Last action 2015-02-25
    $1,619,369
  • Department of State
    PURCHASE OF MULTISTACK CHILLERS FOR USE IN BEIJING NOX
    contract · Last action 2014-03-05
    $1,612,435
  • Department of State
    CHILLER REPLACEMENT AT THE US EMBASSY IN NASSAU, BAHAMAS IGF::OT::IGF
    contract · Last action 2013-05-29
    $556,067
  • Department of State
    MULTISTACK - SAQMMA08M2674 ONE (1) FLY AWAY CHILLER FOR EMERGENCY OPERATION AT U.S. EMBASSIES WORLDWIDE. SEE ATTACHMENT FOR DETAILS.
    contract · Last action 2010-07-29
    $449,166
  • Department of State
    INSTALLATION OF HVAC CHILLERS AT U.S. EMBASSY NICOSIA, CYPRUS.
    contract · Last action 2011-04-11
    $421,985
  • Department of State
    CONTRACT PM SERVICE CONTRACT FOR CHILLERS
    contract · Last action 2023-12-26
    $372,429
  • Department of State
    AMEMB BOGOTA, COLOMBIA; PURCHASE AND INSTALLATION OF AN AIRSTACK CHILLER UNIT
    contract · Last action 2012-09-27
    $330,271
  • Department of State
    EMBASSY OSLO: REPAIR/SERVICE OF MULTISTACK EQUIPMENT
    contract · Last action 2025-08-27
    $306,000
  • Department of State
    FAC-7901-SRVC-PMSC-MULTISTACK CHILLERS, HYDRONIC SYST., AHUS
    contract · Last action 2025-06-23
    $248,208
  • Department of State
    CHILLERS
    contract · Last action 2009-09-28
    $232,171
  • Department of State
    U.S. CONSULATE CHENGDU, CHINA. REPLACE EXISTING 2-20 TON CHILLER WITH 2-20 TON MULTISTACK/AIRSTACK AIRCOOLED CHILLER TO PROVIDE REQUIRED COOLING AT DESIGN CONDITIONS. SHIP TO POST.
    contract · Last action 2009-03-16
    $197,962
  • Department of State
    OVERSEAS CONTRACT
    contract · Last action 2013-03-19
    $176,193
  • Department of State
    REPLACEMENT SERVICE FOR PCC CHILLER UNITS IN THE COB OSAKA.
    contract · Last action 2008-09-18
    $174,796
  • Department of State
    ISB-MH-FAC-FY24-ASP030-FWP 528.00 -7901 RSTR
    contract · Last action 2026-04-09
    $165,023
  • Department of State
    IGF::OT::IGF FAC-MULTISTACK CHILLER FOLLOW UP SERVICE FOR DUSHANBE POST
    contract · Last action 2019-01-10
    $148,833
  • Department of State
    ISB-FAC - MULTISTACK NOB NOX PARTS
    contract · Last action 2016-09-15
    $147,890
  • Department of State
    PURCHASE OF CHILLER PLANT SYSTEM FOR INSTALLATION AT U.S. EMBASSY, BAMAKO, MALI.
    contract · Last action 2009-08-21
    $144,661
  • Department of State
    SPARE PARTS FOR CHILLERS AT POST
    contract · Last action 2018-04-06
    $136,929
  • Department of State
    PREVENTIVE MAINTENANCE SERVICE (HVAC CHILLERS)
    contract · Last action 2024-08-04
    $134,336
  • Department of State
    HK FM CONTRACT BME ROUTINE MAINTENANCE MULTISTACK CHILLERS "OTHER FUNCTION" - IGF::OT::IGF
    contract · Last action 2019-03-14
    $132,960
  • Department of State
    IGF::OT::IGF PUMP PACKAGE FOR MULTI STACK CHILLERS
    contract · Last action 2017-09-25
    $128,518
  • Department of State
    AIRSTACK (ASP 30) PARTS LIST.
    contract · Last action 2013-09-16
    $126,899
  • Department of State
    CRITICAL SPARE PARTS FOR AIRSTACK CHILLER
    contract · Last action 2021-08-06
    $115,297
  • Department of State
    IGF::OT::IGF TO REPAIR ANNEX CHILLER TO FULL WORKING CAPACITY
    contract · Last action 2013-03-12
    $114,031
  • Department of State
    CMR CHILLER
    contract · Last action 2010-06-15
    $106,553
  • Department of State
    PREVENTIVE MAINTENANCE
    contract · Last action 2022-06-22
    $104,145
  • Department of State
    SUPPLY COMPRESSOR
    contract · Last action 2024-01-29
    $103,651
  • Department of State
    SDA CHILLERS - ADDITIONAL MODULES INSTALLATION
    contract · Last action 2021-08-12
    $101,205
  • Department of State
    IGF::OT::IGF G-BME CHILLER PREVENTIVE MAINT. SERVICES W/ OPT YRS
    contract · Last action 2019-09-13
    $100,340
  • Department of State
    CHILLER REPAIRS
    contract · Last action 2014-11-13
    $99,276
  • Department of State
    CHILLER PARTS
    contract · Last action 2025-09-15
    $97,919
  • Department of State
    PREVENTIVE MAINTENANCE FOR MULTISTACK WATER COOLED CHILLER FOR THE U.S EMBASSY PHNOM PENH
    contract · Last action 2021-01-11
    $97,723
  • Department of State
    LAG: MULTISTACK CHILLER REPAIR PARTS WO_200039 -7901SUST
    contract · Last action 2023-12-19
    $95,975
  • Department of State
    FMU 12 635 NOX 1, NOX 3 AND TOWNHOUSE BACK-UP AIRCON CHILLER
    contract · Last action 2012-09-14
    $87,085
  • Department of State
    ISB-FA-FAC-FY24-REPL CHILLER COIL MTR-7901-RSTR-FWP#562
    contract · Last action 2024-02-15
    $86,463
  • Department of State
    IGF::OT::IGF
    contract · Last action 2017-09-13
    $85,806
  • Department of State
    PURCHASE SPARE PARTS FOR MULTISTACK CHILLER
    contract · Last action 2012-09-28
    $82,537
  • Department of State
    FAC-AIRSTACK CHILLER PMSC #48 YA2024 - YA2025
    contract · Last action 2025-09-24
    $81,020
  • Department of State
    MISSION AND PCC CHILLERS ANNUAL MAINTENANCE CONTRACT
    contract · Last action 2026-04-13
    $80,918
  • Department of State
    IGF::OT::IGF
    contract · Last action 2021-03-24
    $79,640
  • Department of State
    ANNUAL MAINT. & SERVICE CONTRACT FOR THE MULTI-STACK
    contract · Last action 2021-09-26
    $78,804
  • Department of State
    PR7270155: FM- MULTI-STACK REPAIR SPARES
    contract · Last action 2018-07-10
    $77,882
  • Department of State
    FAC-NEC MULTISTACK CHILLER-SPAREPARTS
    contract · Last action 2025-09-23
    $74,877
  • Department of State
    CHANCERY CHILLER PREVENTIVE MAINTENANCE
    contract · Last action 2020-05-15
    $71,607
  • Department of State
    CHILLERS CONTROLLERS REPLACEMENT
    contract · Last action 2025-09-10
    $70,568
  • Department of State
    REPAIR & MAINTENANCE SERVICES OF MAGLEV CHILLERS
    contract · Last action 2024-04-09
    $70,546
  • Department of State
    CHILLER BME PREVENTIVE MAINTENANCE
    contract · Last action 2025-08-15
    $70,410
  • Department of State
    CONTROLLERS UPGRADE FROM PCO3 TO PCO5
    contract · Last action 2025-04-14
    $69,999
  • Department of State
    FAC - SPARES FOR THE MULTI STACK MAIN CHILLER
    contract · Last action 2021-09-27
    $68,335
  • Department of State
    SPARES R MULTISTACK CHILLER
    contract · Last action 2022-04-01
    $66,961

Federal contract dollars to this establishment. Primary NAICS: 333415 - AIR-CONDITIONING AND WARM AIR HEATING EQUIPMENT AND COMMERCIAL AND INDUSTRIAL REFRIGERATION EQUIPMENT MANUFACTURING. Last action: 2026-04-17. Source: USAspending.gov, net obligations. Recipient address is the SAM registration / HQ address, not necessarily the worksite.

Inspection history

DateTriggerViolationsSeriousPenalty
2023-10-17Complaint106$46,436
2010-01-20Complaint55$6,615

Source: OSHA IMIS. Citation amounts reflect initially assessed penalties; final amounts after appeal may differ.

In the news

Part of a larger organization

MULTISTACK, LLC is one of 2 establishments rolled up under the parent organization Multistack LLC.

Federal enforcement records on this page represent activity at this specific establishment only. The full enforcement footprint of Multistack LLC across all 2 of its tracked locations is viewable on the parent profile.

Other employers in this industry and state

Other employers in air-conditioning and warm air heating equipment and commercial and industrial refrigeration equipment manufacturing within WI, ordered by federal enforcement volume:

Related searches

About this data

This profile aggregates federal enforcement records on MULTISTACK, LLC from every major federal compliance and enforcement source plus the UVA Corporate Prosecution Registry. OSHA workplace safety inspections, WHD wage cases, MSHA mine safety, EPA environmental enforcement, NLRB labor relations, OFLC visa/labor certification, FMCSA motor carrier registration, SAM.gov debarments, CMS nursing-home records, BLS industry safety benchmarks, OSHA ITA self-reported injury rates, SEC enforcement and financial disclosures, CPSC and NHTSA recalls.

Establishments are matched across agencies using normalized employer name, state, and ZIP code. This establishment resolves to the parent rollup Multistack LLC, which operates 2 establishments in our dataset.

OSHA citations typically appear 3–8 months after the inspection, so very recent enforcement actions may not yet be reflected. Profiles may be incomplete if the establishment operates under multiple legal names or files under variations our entity-matching rules don’t yet cover. To report a missing record or correction, email corrections@fastdol.com.

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Frequently asked

What is MULTISTACK, LLC's OSHA violation history?
MULTISTACK, LLC has 2 OSHA inspections on record with 15 violations and $53,050.6 in total penalties.
How does MULTISTACK, LLC's safety record compare to its industry?
MULTISTACK, LLC operates in the air-conditioning and warm air heating equipment and commercial and industrial refrigeration equipment manufacturing industry. The industry average Total Recordable Incident Rate (TRIR) is 2.1. MULTISTACK, LLC's self-reported DART rate is 2.4 compared to an industry average of 1.1.