Air system balancing and testing · Illinois

Mendel Plumbing & Heating

St. Charles, IL · ~67 workers · 5 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
11.1
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Mendel Plumbing & Heating runs at 398% of its industry's injury rate - far more dangerous than the typical Air system balancing and testing workplace, earning a grade F.

Mendel Plumbing & Heating: 11.1 TCR = 398% of Air system balancing and testing BLS 2.8 · 5y Form 300A (see methodology below)

Mendel Plumbing & Heating safety composite

Mendel Plumbing & Heating scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 8%), 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

19/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 11.13 per 100 workers

Safer than 8% of industry peers

DART rate
F 7.89 per 100 workers

Safer than 8% 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

−5.8

2019→2024

Mendel Plumbing & Heating injury rate improved

Mendel Plumbing & Heating's TCR fell 5.8 from 13.7 in 2019 to 7.9 in 2024. Peak filing year was 2019 at 13.7 TCR. In 2024, DART was 0.71× this establishment's average TCR (severity share of cases).

2019=13.7 · 2020=12.3 · 2022=13.3 · 2023=8.5 · 2024=7.9

OSHA ITA Form 300A scorecard

Establishment book 238220 · St. Charles, IL ABOVE-IND · SMALL

Grade F · TCR 11.1 · 398% of ind

  • DART 7.9 DART
  • RANK #220/230
  • PHOTO Nexair Mechanical Co…
  • BOOK 5y book
  • INJ 31 inj
  • SIZE ~67 FTE

Nearest TCR peer: Nexair Mechanical Corporation (0.0 TCR gap)

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

Mendel Plumbing & Heating in the TCR neighbourhood

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

TCR

What this shows Mendel Plumbing & Heating averages 11.1 TCR (398% of the Air system balancing and testing BLS benchmark).

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

Mendel Plumbing & Heating TCR series: 2019=13.7 · 2020=12.3 · 2022=13.3 · 2023=8.5 · 2024=7.9 · BLS 2.8

Where Mendel Plumbing & Heating falls in its industry

5,793 Air system balancing and testi establishments

Safer than 8% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #220 safest of 230 Air system balancing and testi employers in Illinois.

Mendel Plumbing & Heating (67 employees, TCR 11.1) 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 Mendel Plumbing & Heating
Mendel Plumbing & Heating (67 employees, TCR 11.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Mendel Plumbing & Heating has more employees than the Air system balancing and testing 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 7.9 7.9 5 0 0
2023 8.5 5.1 5 0 0
2022 13.3 5.0 8 0 0
2020 12.3 6.1 6 0 0
2019 13.7 9.8 7 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · IL · St. Charles

5,793 Air system balancing and testing employers nationwide with a credible TCR · 22,804 rated employers in Illinois with headcount on file · 87 employers in St. Charles, IL · 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 Nexair Mechanical Corporation 11.1 TCR
NAICS-TCR R&L Plumbing-12th Street 11.1 TCR
NAICS-TCR Certified Mechanical Co., LLC 11.1 TCR
NAICS-TCR Green's Plumbing & Modern Heating 11.1 TCR
STATE-SIZE Decatur Cogeneration 67 FTE
STATE-SIZE SWECO - Chicago 67 FTE
STATE-SIZE AMEREN ILLINOIS - Galesburg 67 FTE
STATE-SIZE 75G - Western S - IL Gas Ops 67 FTE
CITY-NEAR Rukel Management, LLC. 607 FTE
CITY-NEAR Omron Automotive Electronics, Inc. (OEDC) 572 FTE
CITY-NEAR Nidec Mobility of America Corporation 454 FTE
CITY-NEAR Nidec Mobility America Corporation 439 FTE
NAT-TCR Summit Contracting 11.1 TCR
NAT-TCR RDF Builders Co 11.1 TCR
NAT-TCR Tulley Steel and Supplies 11.1 TCR
NAT-TCR City of Le Center 11.1 TCR
NAT-SIZE EC Constructors, Inc. 67 FTE
NAT-SIZE Lubrication Specialties 67 FTE
NAT-SIZE Machine Specialty & Manufacturing, Inc. - Youngsville 67 FTE
NAT-SIZE Universal Blanchers, dba Olam Edible Nuts Blakely Facility 67 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, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.