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OSHA Workplace Injury Research

Cooling and Humidifying Machinery Injuries

OSHA recorded 414 severe injuries involving cooling and humidifying equipment, with most cases resulting in permanent finger amputations.

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How often these injuries happen

OSHA recorded 414 severe cases involving cooling and humidifying machinery over the last decade. Amputations, avulsions, and enucleations account for 59% of these reported injuries, reflecting the high-speed, sharp nature of industrial fan blades and cooling components.

These incidents frequently result in permanent damage, with finger injuries making up 67% of all reported cases. When guards fail or you perform maintenance on live equipment, the resulting trauma often requires extensive surgical intervention and long-term rehabilitation.

Reported Projected
02040608020152026
Data: Federal OSHA Severe Injury Reports (29 states). 2025 and 2026 data forecasted by ClaimsBoost research team.

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How these injuries happen

Injuries involving cooling and humidifying machinery typically occur when safety guards are missing or bypassed during operation. Getting caught or entangled in running powered equipment during normal operation accounts for 26% of all incidents, often occurring when you attempt to adjust or clean fans while they are still spinning. Other common scenarios involve being compressed between equipment and other objects or suffering severe lacerations when a guard unexpectedly detaches during routine maintenance.

1 Caught, entangled in running powered equipment— normal operation
Incidents
107
Share
26% of reported incidents
2 Compressed between running equipment and other object(s)
Incidents
66
Share
16% of reported incidents
3 Struck by rolling, sliding, or shifting objects—non-running
Incidents
64
Share
16% of reported incidents
4 Struck by falling object
Incidents
29
Share
7% of reported incidents
5 Direct exposure to electricity
Incidents
23
Share
6% of reported incidents
6 Fall on same level
Incidents
20
Share
5% of reported incidents
7 Struck by running powered equipment— unspecified
Incidents
19
Share
5% of reported incidents
8 Other fall to lower level
Incidents
16
Share
4% of reported incidents
Cause Incidents Share
1Caught, entangled in running powered equipment— normal operation 10726% of reported incidents
2Compressed between running equipment and other object(s) 6616% of reported incidents
3Struck by rolling, sliding, or shifting objects—non-running 6416% of reported incidents
4Struck by falling object 297% of reported incidents
5Direct exposure to electricity 236% of reported incidents
6Fall on same level 205% of reported incidents
7Struck by running powered equipment— unspecified 195% of reported incidents
8Other fall to lower level 164% of reported incidents

Where injuries happen most

Manufacturing leads all sectors with 33% of reported incidents, as you frequently interact with high-powered industrial fans and cooling systems in these facilities. Construction follows at 17%, where the installation and repair of rooftop HVAC units often expose you to rotating blades and electrical hazards in cramped, elevated workspaces.

Manufacturing 33%
Construction 17%
Accommodation & Food Services 7%
Retail Trade 7%
Health Care 6%
Other 30%

Real cases like yours

Common patterns in these reports involve you performing routine maintenance or cleaning tasks when equipment is not properly locked out or guarded. Whether it is a fan guard falling off during operation or a slip on ice inside a walk-in freezer, these incidents often stem from preventable maintenance failures. If any of these scenarios sound like what happened to you, an attorney can help you review the specifics of your incident.

Year State Industry Incident summary

Source: OSHA Severe Injury Reports. Narratives are verbatim from filings; identifying details may have been redacted by OSHA.

Frequently asked questions