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

6728-00030053-1

Ontario, CA · ~152 workers · 7 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
8.2
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

6728-00030053-1 runs at 293% of its industry's injury rate - far more dangerous than the typical HVAC (heating, ventilation and air-conditioning) contractors workplace, earning a grade F.

6728-00030053-1: 8.2 TCR = 293% of HVAC (heating, ventilation and air-conditioning) contractors BLS 2.8 · 7y Form 300A (see methodology below)

6728-00030053-1 safety composite

6728-00030053-1 scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 16%), 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

25/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 8.2 per 100 workers

Safer than 16% of industry peers

DART rate
F 4.65 per 100 workers

Safer than 18% 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

6728-00030053-1: 6.4 → 7.0 TCR

Peak year 2020 @ 15.3 TCR · DART/TCR 0.57× in 2024

6728-00030053-1's TCR rose 0.5 from 6.4 in 2018 to 7.0 in 2024. Peak filing year was 2020 at 15.3 TCR. In 2024, DART was 0.57× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Ontario, CA ABOVE-IND · MID

Grade F · TCR 8.2 · 293% of ind

  • DART 4.7 DART
  • RANK #459/594
  • PHOTO Dresseler & Son, Inc…
  • BOOK 7y book
  • INJ 74 inj
  • SIZE ~152 FTE

Nearest TCR peer: Dresseler & Son, Inc., dba. Dresseler Mechanical Inc. (0.0 TCR gap)

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6728-00030053-1 in the TCR neighbourhood

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

TCR

What this shows 6728-00030053-1 averages 8.2 TCR (293% 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

6728-00030053-1 TCR series: 2018=6.4 · 2019=7.6 · 2020=15.3 · 2021=9 · 2022=5.2 · 2023=6.8 · 2024=7 · BLS 2.8

Where 6728-00030053-1 falls in its industry

5,793 HVAC (heating, ventilation and establishments

Safer than 16% 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 #459 safest of 594 HVAC (heating, ventilation and employers in California.

6728-00030053-1 (152 employees, TCR 8.2) 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 6728-00030053-1
6728-00030053-1 (152 employees, TCR 8.2) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

6728-00030053-1 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
2024 7.0 4.7 8 1 0
2023 6.8 5.1 12 0 0
2022 5.2 3.9 6 2 0
2021 9.0 5.5 12 1 0
2020 15.3 14.1 17 7 0
2019 7.6 1.4 11 0 0
2018 6.4 4.0 8 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Ontario

5,793 HVAC (heating, ventilation and air-conditioning) contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 599 employers in Ontario, 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 Dresseler & Son, Inc., dba. Dresseler Mechanical Inc. 8.2 TCR
NAICS-TCR General Sprinkler Corporation 8.2 TCR
NAICS-TCR Smith Mechanical, Inc. 8.2 TCR
NAICS-TCR ColdFlo Mechanical, Inc. 8.2 TCR
STATE-SIZE LangeTwins Inc. 152 FTE
STATE-SIZE Sorrento Berry Farms, LLC - Lompoc 152 FTE
STATE-SIZE MT. VIEW PRODUCTION 152 FTE
STATE-SIZE MATEOS LABOR SERVICE INC. 152 FTE
CITY-NEAR Prime Healthcare Services Inc. Location: St. Mary's, Passaic LLC 46-3499370 (HP29) 10,997 FTE
CITY-NEAR CAONA - ONTARIO HUB 4,372 FTE
CITY-NEAR ONTARIO HUB (CAONA) 3,354 FTE
CITY-NEAR Atlantic Solutions Group Inc, Inc. DBA Empire Workforce Solutions 3,240 FTE
NAT-TCR Smith Mechanical, Inc. 8.2 TCR
NAT-TCR St. Paul Midway Mn - 3181 8.2 TCR
NAT-TCR Kamps Pallets Lima 8.2 TCR
NAT-TCR SP-Ascen Prov Hosp 8.2 TCR
NAT-SIZE Selectos Los Prados, INC> 152 FTE
NAT-SIZE Berry Global, Easthampton MA 152 FTE
NAT-SIZE Lakeside Book Company - Crawfordsville North 152 FTE
NAT-SIZE HCL Mechanical Services, LLC 152 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, 2021, 2020, 2019, 2018. 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.