Heating, ventilation and air-conditioning (HVAC) contractors · Texas

Mueller and Wilson Inc.

San Antonio, TX · ~79 workers · 3 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

Mueller and Wilson Inc. runs at 174% of its industry's injury rate - more dangerous than the typical Heating, ventilation and air-conditioning (HVAC) contractors workplace, earning a grade D.

Mueller and Wilson Inc.: 4.9 TCR = 174% of Heating, ventilation and air-conditioning (HVAC) contractors BLS 2.8 · 3y Form 300A (see methodology below)

Mueller and Wilson Inc. safety composite

Mueller and Wilson 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 4.87 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

−7.5

2022→2024

Mueller and Wilson Inc. injury rate improved

Mueller and Wilson Inc.'s TCR fell 7.5 from 9.7 in 2022 to 2.2 in 2024. Peak filing year was 2022 at 9.7 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2022=9.7 · 2023=2.7 · 2024=2.2

OSHA ITA Form 300A scorecard

Establishment book 238220 · San Antonio, TX ABOVE-IND · SMALL

Grade D · TCR 4.9 · 174% of ind

  • DART 0.0 DART
  • RANK #300/408
  • PHOTO Air Systems Engineer…
  • BOOK 3y book
  • INJ 11 inj
  • SIZE ~79 FTE

Nearest TCR peer: Air Systems Engineering Inc (0.0 TCR gap)

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

Mueller and Wilson Inc. in the TCR neighbourhood

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

TCR

What this shows Mueller and Wilson Inc. averages 4.9 TCR (174% of the Heating, ventilation and air-conditioning (HVAC) contractors BLS benchmark).

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

Mueller and Wilson Inc. TCR series: 2022=9.7 · 2023=2.7 · 2024=2.2 · BLS 2.8

Where Mueller and Wilson Inc. falls in its industry

5,793 Heating, ventilation and air-c establishments

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

More dangerous than peersSafer than peers

Narrower to Texas alone (the establishments it most directly competes with for workers and contracts): ranked #300 safest of 408 Heating, ventilation and air-c employers in Texas.

Mueller and Wilson Inc. (79 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 Mueller and Wilson Inc.
Mueller and Wilson Inc. (79 employees, TCR 4.9) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Mueller and Wilson Inc. has more employees than the Heating, ventilation and air-conditionin 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 2.2 0.0 2 0 0
2023 2.7 1.4 2 0 0
2022 9.7 5.5 7 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · TX · San Antonio

5,793 Heating, ventilation and air-conditioning (HVAC) contractors employers nationwide with a credible TCR · 38,394 rated employers in Texas with headcount on file · 2,207 employers in San Antonio, TX · 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 Air Systems Engineering Inc 4.9 TCR
NAICS-TCR Braconier Plumbing & Heating 4.9 TCR
NAICS-TCR Batjer & Associates 4.9 TCR
NAICS-TCR HeatGuy, Llc. 4.9 TCR
STATE-SIZE HOOPER TRUCKING LTD 79 FTE
STATE-SIZE Fervo Energy 79 FTE
STATE-SIZE Lipan Service center 79 FTE
STATE-SIZE North Office 79 FTE
CITY-NEAR Bexar County Hospital District 8,703 FTE
CITY-NEAR Legend Oaks Health & Rehabilitation West San Antonio 6,953 FTE
CITY-NEAR ISS Facility Services Inc. 6,177 FTE
CITY-NEAR Buena Vida of San Antonio 5,262 FTE
NAT-TCR 10284 Boise 4.9 TCR
NAT-TCR Premium Food & Beverage - SC - SCPFB 4.9 TCR
NAT-TCR Dfa Fluid - Englewood Co 4.9 TCR
NAT-TCR Tillamook 4.9 TCR
NAT-SIZE Red River Ready Mix 79 FTE
NAT-SIZE Advanced Welding & Steel 79 FTE
NAT-SIZE Arko Veal, Inc. 79 FTE
NAT-SIZE McDonagh Demolition, Inc. 79 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.