Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation · California

American Mechanical, inc.

Walnut Creek, CA · ~29 workers · 5 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
4.9
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

American Mechanical, inc. runs at 175% of its industry's injury rate - more dangerous than the typical Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation workplace, earning a grade D.

American Mechanical, inc.: 4.9 TCR = 175% of Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation BLS 2.8 · 5y Form 300A (see methodology below)

American Mechanical, inc. safety composite

American Mechanical, inc. scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on total case rate (tcr) (safer than 35%), 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).

C

55/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 4.91 per 100 workers

Safer than 35% 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

−10.1

2019→2023

American Mechanical, inc. injury rate improved

American Mechanical, inc.'s TCR fell 10.1 from 10.1 in 2019 to 0.0 in 2023. Peak filing year was 2020 at 11.0 TCR. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

2019=10.1 · 2020=11.0 · 2021=3.4 · 2022=0.0 · 2023=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Walnut Creek, CA ABOVE-IND · SMALL

Grade D · TCR 4.9 · 175% of ind

  • DART 0.0 DART
  • RANK #359/594
  • PHOTO Airmasters Mechanica…
  • BOOK 5y book
  • INJ 7 inj
  • SIZE ~29 FTE

Nearest TCR peer: Airmasters Mechanical Contractor (0.0 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

American Mechanical, inc. in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows American Mechanical, inc. averages 4.9 TCR (175% of the Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

American Mechanical, inc. TCR series: 2019=10.1 · 2020=11 · 2021=3.4 · 2022=0 · 2023=0 · BLS 2.8

Where American Mechanical, inc. falls in its industry

5,793 Heating and ventilation system establishments

Safer than 35% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #359 safest of 594 Heating and ventilation system employers in California.

American Mechanical, inc. (29 employees, TCR 4.9) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 050100150200250 05101520 Average employees Total Case Rate American Mechanical, inc.
American Mechanical, inc. (29 employees, TCR 4.9) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

American Mechanical, inc. has fewer employees than the Heating and ventilation system component 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
2023 0.0 0.0 0 0 0
2022 0.0 0.0 0 0 0
2021 3.4 3.4 1 0 0
2020 11.0 3.7 3 0 0
2019 10.1 3.4 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Walnut Creek

5,793 Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 119 employers in Walnut Creek, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Airmasters Mechanical Contractor 4.9 TCR
NAICS-TCR CHC Mechanical Contractors, Inc. 4.9 TCR
NAICS-TCR JM Oliver Inc 4.9 TCR
NAICS-TCR Southcoast Heating & Air Conditioning, LP 4.9 TCR
STATE-SIZE Sean V. Doherty Farms 29 FTE
STATE-SIZE Blanco Farms, LLC 29 FTE
STATE-SIZE CONSTRUCTION SUPPORT SHOP 29 FTE
STATE-SIZE Cottonwood Farms 29 FTE
CITY-NEAR California Department of Transportation Facility 522 2,891 FTE
CITY-NEAR California Department of Transportation Facility 523 2,891 FTE
CITY-NEAR 2032-02121551 2,806 FTE
CITY-NEAR 02821551 WALNUT CREEK HOSPITAL 1,924 FTE
NAT-TCR Blue Star Plastics 4.9 TCR
NAT-TCR Royal Wholesale Electric (PC5349) 4.9 TCR
NAT-TCR Onion River Cooperative, DBA City Market South End 4.9 TCR
NAT-TCR MN - Marshall 4.9 TCR
NAT-SIZE SPR New York 29 FTE
NAT-SIZE Justice Quality Foods #3 29 FTE
NAT-SIZE TMC Industries Inc. 29 FTE
NAT-SIZE Weiss Center 29 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: 2023, 2022, 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.