Heating, ventilation and air-conditioning (HVAC) contractors · Minnesota

Ahern Rochester

Name: Ahern Rochester Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Rochester, MN · ~27 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

F
Failing Safety Record: 11.7
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Ahern Rochester runs at 418% of its industry's injury rate - far more dangerous than the typical Heating, ventilation and air-conditioning (HVAC) contractors workplace, earning a grade F.

Ahern Rochester: 11.7 TCR = 418% of Heating, ventilation and air-conditioning (HVAC) contractors BLS 2.8 · 2y Form 300A (see methodology below)

Ahern Rochester safety composite

Ahern Rochester scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on total case rate (tcr) (safer than 7%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

44/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): F 11.69 per 100 workers

Safer than 7% of industry peers
DART rate: B 0 per 100 workers

Safer than 80% of industry peers
Fatalities: D 0

Safer than 51% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−12.9

2023→2024

Ahern Rochester injury rate improved

Ahern Rochester's TCR fell 12.9 from 18.1 in 2023 to 5.2 in 2024. Peak filing year was 2023 at 18.1 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2023=18.1 · 2024=5.2

OSHA ITA Form 300A scorecard

Establishment book 238220 · Rochester, MN ABOVE-IND · SMALL

Grade F · TCR 11.7 · 418% of ind

DART 0.0 DART
RANK #135/153
PHOTO Sila KOP
BOOK 2y book
INJ 3 inj
SIZE ~27 FTE

Nearest TCR peer: Sila KOP (0.0 TCR gap)

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This site

11.7
Sila KOP

11.7
Gerdau

11.7
Hawn Heating A

11.7
Frank Gay Serv

11.7

What this shows Ahern Rochester averages 11.7 TCR (418% of the Heating, ventilation and air-conditioning (HVAC) contractors BLS benchmark).

Ahern Rochester TCR series: 2023=18.1 · 2024=5.2 · BLS 2.8

Where Ahern Rochester falls in its industry

5,793 Heating, ventilation and air-c establishments

Safer than 7% of graded establishments in this industry, whose median TCR is 3.3.

Grade F

More dangerous than peersSafer than peers

Narrower to Minnesota alone (the establishments it most directly competes with for workers and contracts): ranked #135 safest of 153 Heating, ventilation and air-c employers in Minnesota.

Ahern Rochester (27 employees, TCR 11.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Ahern Rochester has fewer employees than the Heating, ventilation and air-conditionin median and a higher injury rate than the industry's median TCR of 3.3. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries	Illnesses	Fatalities
2024	5.2	0.0	2	0	0
2023	18.1	0.0	1	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MN · Rochester

5,793 Heating, ventilation and air-conditioning (HVAC) contractors employers nationwide with a credible TCR · 15,828 rated employers in Minnesota with headcount on file · 290 employers in Rochester, MN · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Sila KOP	KING OF PRUSSIA, PA	11.7 TCR
NAICS-TCR	Gerdau	PETERSBURG, VA	11.7 TCR
NAICS-TCR	Hawn Heating And Air Conditioning	ROCHESTER, NY	11.7 TCR
NAICS-TCR	Frank Gay Services Of Winter Park	WINTER PARK, FL	11.7 TCR
STATE-SIZE	Featherstone Fruits and Vegetables LLC.	RUSHFORD	27 FTE
STATE-SIZE	Forest City Feedmill	SLEEPY EYE	27 FTE
STATE-SIZE	Schwartz Farms PAP MN	MOUNTAIN LAKE	27 FTE
STATE-SIZE	2011-Stanton, MN	STANTON	27 FTE
CITY-NEAR	Mayo Clinic Rochester	Rochester	38,233 FTE
CITY-NEAR	Olmsted County	Rochester	1,304 FTE
CITY-NEAR	Mayo Collaborative Services, LLC	Rochester	1,051 FTE
CITY-NEAR	FEDERAL BUREAU OF PRISONS	Rochester	823 FTE
NAT-TCR	Aztem - Tempe	Tempe, AZ	11.7 TCR
NAT-TCR	Lanat - Natchitoches	Natchitoches, LA	11.7 TCR
NAT-TCR	Ingyy - Gary Gateway	Gary, IN	11.7 TCR
NAT-TCR	Ring-O-Matic	Pella, IA	11.7 TCR
NAT-SIZE	Veranova - North Andover	North Andover, MA	27 FTE
NAT-SIZE	Springhill Suites Boston Andover	Andover, MA	27 FTE
NAT-SIZE	MK Electric & Design Inc.	Turlock, CA	27 FTE
NAT-SIZE	AMI Metals WA	Spokane, WA	27 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.