HVAC (heating, ventilation and air-conditioning) contractors · North Carolina

STR Mechanical

Charlotte, NC · ~72 workers · 3 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
4.5
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

STR Mechanical runs at 161% of its industry's injury rate - more dangerous than the typical HVAC (heating, ventilation and air-conditioning) contractors workplace, earning a grade D.

STR Mechanical: 4.5 TCR = 161% of HVAC (heating, ventilation and air-conditioning) contractors BLS 2.8 · 3y Form 300A (see methodology below)

STR Mechanical safety composite

STR Mechanical scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 13%), 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).

F

33/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 4.5 per 100 workers

Safer than 38% of industry peers

DART rate
F 5.78 per 100 workers

Safer than 13% 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

STR Mechanical: 4.8 → 5.8 TCR

Peak year 2021 @ 5.8 TCR · DART/TCR 1.28× in 2021

STR Mechanical's TCR rose 1.0 from 4.8 in 2017 to 5.8 in 2021. In 2021, DART was 1.28× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Charlotte, NC ABOVE-IND · SMALL

Grade D · TCR 4.5 · 161% of ind

  • DART 5.8 DART
  • RANK #143/212
  • PHOTO United Mechanical, I…
  • BOOK 3y book
  • INJ 9 inj
  • SIZE ~72 FTE

Nearest TCR peer: United Mechanical, Inc. (0.0 TCR gap)

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

STR Mechanical in the TCR neighbourhood

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

TCR

What this shows STR Mechanical averages 4.5 TCR (161% of the HVAC (heating, ventilation and air-conditioning) contractors BLS benchmark).

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

STR Mechanical TCR series: 2017=4.8 · 2018=3 · 2021=5.8 · BLS 2.8

Where STR Mechanical falls in its industry

5,793 HVAC (heating, ventilation and establishments

Safer than 38% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to North Carolina alone (the establishments it most directly competes with for workers and contracts): ranked #143 safest of 212 HVAC (heating, ventilation and employers in North Carolina.

STR Mechanical (72 employees, TCR 4.5) 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 STR Mechanical
STR Mechanical (72 employees, TCR 4.5) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

STR Mechanical has more employees than the HVAC (heating, ventilation and air-condi 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
2021 5.8 5.8 5 0 0
2018 3.0 3.0 2 0 0
2017 4.8 0.0 2 1 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · NC · Charlotte

5,793 HVAC (heating, ventilation and air-conditioning) contractors employers nationwide with a credible TCR · 16,981 rated employers in North Carolina with headcount on file · 2,058 employers in Charlotte, NC · 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 Mechanical, Inc. 4.5 TCR
NAICS-TCR Century Mechanical Contractors, Inc. 4.5 TCR
NAICS-TCR RRSC Charlotte 4.5 TCR
NAICS-TCR A&W Plumbing & Heating, Inc. 4.5 TCR
STATE-SIZE Terrell and Johmmy Williams 72 FTE
STATE-SIZE Toney Lumber Company, Inc. 72 FTE
STATE-SIZE Hickory Operations Center 72 FTE
STATE-SIZE French Broad Electric Membership Corporation - Headquarters 72 FTE
CITY-NEAR 1101-Carolinas Medical Center (1101) 8,444 FTE
CITY-NEAR 0001-Carolinas Medical Center 8,032 FTE
CITY-NEAR 4795-AA-CLT-CHARLOTTE-CLT-TRML 7,295 FTE
CITY-NEAR Novant Health Presbyterian Medical Center 4,973 FTE
NAT-TCR Technical Services 4.5 TCR
NAT-TCR Drury Plaza Hotel - Cape Conference Center 4.5 TCR
NAT-TCR Canfield Industries 4.5 TCR
NAT-TCR Aetna Felt Corp 4.5 TCR
NAT-SIZE STA-Fort Bend (TEX-770) 72 FTE
NAT-SIZE C.Q. Insulation, Inc. #731 72 FTE
NAT-SIZE Choice Personal Care -HCO 72 FTE
NAT-SIZE Ruan Transport Corporation T-305 72 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: 2021, 2018, 2017. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.