Air-conditioning system (except window) installation · California

Sheldon Mechanical Corporation

Santa Clarita, Ca, Usa, CA · ~55 workers · 3 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.7
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Sheldon Mechanical Corporation runs at 25% of its industry's injury rate - far safer than the typical Air-conditioning system (except window) installation workplace, earning a grade A.

Sheldon Mechanical Corporation: 0.7 TCR = 25% of Air-conditioning system (except window) installation BLS 2.8 · 3y Form 300A (see methodology below)

Sheldon Mechanical Corporation safety composite

Sheldon Mechanical Corporation scores strongest on total case rate (tcr) (safer than 93% of same-industry peers) and weakest on dart rate (safer than 38%), 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

63/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 0.71 per 100 workers

Safer than 93% of industry peers

DART rate
D 2.13 per 100 workers

Safer than 38% 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%).

Rising injury rate

Sheldon Mechanical Corporation: 0.0 → 2.1 TCR

Peak year 2024 @ 2.1 TCR · DART/TCR 3× in 2024

Sheldon Mechanical Corporation's TCR rose 2.1 from 0.0 in 2022 to 2.1 in 2024. In 2024, DART was 3× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Santa Clarita, Ca, Usa, CA AT/BELOW-IND · SMALL

Grade A · TCR 0.7 · 25% of ind

  • DART 2.1 DART
  • RANK #28/594
  • PHOTO United Group Services
  • BOOK 3y book
  • INJ 1 inj
  • SIZE ~55 FTE

Nearest TCR peer: United Group Services (0.0 TCR gap)

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

Sheldon Mechanical Corporation in the TCR neighbourhood

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

TCR

What this shows Sheldon Mechanical Corporation averages 0.7 TCR (25% of the Air-conditioning system (except window) installation BLS benchmark).

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

Sheldon Mechanical Corporation TCR series: 2022=0 · 2023=0 · 2024=2.1 · BLS 2.8

Where Sheldon Mechanical Corporation falls in its industry

5,793 Air-conditioning system (excep establishments

Safer than 93% 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 #28 safest of 594 Air-conditioning system (excep employers in California.

Sheldon Mechanical Corporation (55 employees, TCR 0.7) 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 Sheldon Mechanical Corporation
Sheldon Mechanical Corporation (55 employees, TCR 0.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Sheldon Mechanical Corporation has fewer employees than the Air-conditioning system (except window) median and a lower 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 2.1 2.1 1 0 0
2023 0.0 0.0 0 0 0
2022 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Santa Clarita, Ca, Usa

5,793 Air-conditioning system (except window) installation employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 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 United Group Services 0.7 TCR
NAICS-TCR Murtco, Inc. 0.7 TCR
NAICS-TCR Southland Industries 0.7 TCR
NAICS-TCR J&D Heating and Air Conditioning, LLC 0.7 TCR
STATE-SIZE FARMING ADMINISTRATION 55 FTE
STATE-SIZE Dwelley Family Farms LLC 55 FTE
STATE-SIZE Tri-Valley Vineyard Management 55 FTE
STATE-SIZE Cornerstone Certified Vineyard 55 FTE
NAT-TCR Transaxle Manufacturing Of America 0.7 TCR
NAT-TCR MTS Systems 0.7 TCR
NAT-TCR Business Service Department 0.7 TCR
NAT-TCR SONIFI - Sioux Falls Office 0.7 TCR
NAT-SIZE Twelve Oaks 55 FTE
NAT-SIZE Pearson 55 FTE
NAT-SIZE Evansville, IN - 14701 IN-57 55 FTE
NAT-SIZE Magnolia Creek 55 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, 2022. 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.