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

Main

Mesa, AZ · ~152 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
11.9
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Main runs at 425% of its industry's injury rate - far more dangerous than the typical HVAC (heating, ventilation and air-conditioning) contractors workplace, earning a grade F.

Main: 11.9 TCR = 425% of HVAC (heating, ventilation and air-conditioning) contractors BLS 2.8 · 3y Form 300A (see methodology below)

Main safety composite

Main scores strongest on dart rate (safer than 61% of same-industry peers) and weakest on total case rate (tcr) (safer than 6%), 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).

D

37/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 11.91 per 100 workers

Safer than 6% of industry peers

DART rate
C 0.11 per 100 workers

Safer than 61% 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

−13.2

2022→2024

Main injury rate improved

Main's TCR fell 13.2 from 13.9 in 2022 to 0.7 in 2024. Peak filing year was 2023 at 21.1 TCR. In 2024, DART was 0.01× this establishment's average TCR (severity share of cases).

2022=13.9 · 2023=21.1 · 2024=0.7

OSHA ITA Form 300A scorecard

Establishment book 238220 · Mesa, AZ ABOVE-IND · MID

Grade F · TCR 11.9 · 425% of ind

  • DART 0.1 DART
  • RANK #114/131
  • PHOTO Oak Brook Mechanical…
  • BOOK 3y book
  • INJ 98 inj
  • SIZE ~152 FTE

Nearest TCR peer: Oak Brook Mechanical Services, Inc. (0.0 TCR gap)

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

Main in the TCR neighbourhood

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

TCR

What this shows Main averages 11.9 TCR (425% 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

Main TCR series: 2022=13.9 · 2023=21.1 · 2024=0.7 · BLS 2.8

Where Main falls in its industry

5,793 HVAC (heating, ventilation and establishments

Safer than 6% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Arizona alone (the establishments it most directly competes with for workers and contracts): ranked #114 safest of 131 HVAC (heating, ventilation and employers in Arizona.

Main (152 employees, TCR 11.9) 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 Main
Main (152 employees, TCR 11.9) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Main 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 0.7 0.1 52 0 0
2023 21.1 16.0 33 0 0
2022 13.9 13.9 13 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · AZ · Mesa

5,793 HVAC (heating, ventilation and air-conditioning) contractors employers nationwide with a credible TCR · 9,594 rated employers in Arizona with headcount on file · 565 employers in Mesa, AZ · 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 Oak Brook Mechanical Services, Inc. 11.9 TCR
NAICS-TCR Hanson's Plumbing and Heating 11.9 TCR
NAICS-TCR ProSkill Services Inc. 11.9 TCR
NAICS-TCR Redmond Main Office 11.9 TCR
STATE-SIZE Tri Pointe Homes Arizona 152 FTE
STATE-SIZE SDB, Inc. (TSMC) 152 FTE
STATE-SIZE Degan Construction, LLC 152 FTE
STATE-SIZE 1604 Specialties, LLC 152 FTE
CITY-NEAR AZ001 4,193 FTE
CITY-NEAR AZAPW9668 AZA - RAMP PAX 3,181 FTE
CITY-NEAR 04-290370278-2 1,964 FTE
CITY-NEAR Police Department H210 1,651 FTE
NAT-TCR Allina Health Centennial Lakes Clinic Edina 11.9 TCR
NAT-TCR C&A Painting LLC 11.9 TCR
NAT-TCR BWI-INFLIGHT 11.9 TCR
NAT-TCR Stokesay Castle 11.9 TCR
NAT-SIZE Austin Oasis 152 FTE
NAT-SIZE 6892 Austin Mueller Airport 152 FTE
NAT-SIZE 6654 Burbank 152 FTE
NAT-SIZE Wright Construction Company 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. 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.