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
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.
- F
- Failing Safety Record
- 11.1
- avg TCR · per 100 workers
- 2.8
- industry benchmark (BLS)
- 31
- recordable injuries tracked
Grade compares Mendel Plumbing & Heating's OSHA Total Case Rate of 11.1 to the Air system balancing and testing BLS benchmark of 2.8 (398% of benchmark) across 5 years of Form 300A filings (2016–2024). <a href="/methodology">See methodology</a> for reporting-limitation caveats.
Injury rate over time
Mendel Plumbing & Heating's yearly Total Case Rate, against the 2.8 industry benchmark.
Where Mendel Plumbing & Heating falls in its industry
6,536 Air system balancing and testi establishmentsSafer than 7% of graded establishments in this industry, whose median TCR is 2.8.
Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #258 safest of 269 Air system balancing and testi employers in Illinois.
Trend analysis for Mendel Plumbing & Heating
Between 2019 and 2024, Mendel Plumbing & Heating's Total Case Rate improved from 13.7 to 7.9 recordable injuries per 100 full-time workers, a 42% decrease across 5 years of OSHA reporting.
The safest year on record was 2024, at a TCR of 7.9, while 2019 saw the highest rate, at 13.7, a spread of 5.8 points between the best and worst reporting years. That's a comparatively narrow spread, suggesting a fairly consistent safety record across the 5 years with a usable rate on file, rather than one outlier year skewing the multi-year average.
Summed across those 5 reporting years, Mendel Plumbing & Heating recorded 31 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 5-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.
Verify This Employer with OSHA
The 31 injuries shown on this page for Mendel Plumbing & Heating are sourced from its own 5 years of mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.
Verify on OSHA Establishment SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 238220 - Air system balancing and testing.
DART Rate, Transparent Calculation (2024)
What is the DART rate formula?
DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.
5 DART incidents × 200,000 ÷ 126,744 hours worked = 7.89 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Mendel Plumbing & Heating (this establishment) | 11.13 | OSHA ITA Form 300A, 5-year avg |
| Mechanical contractors industry avg | 2.80 | BLS IIF, NAICS 238220 |
| Illinois state avg (all industries) | 4.73 | OSHA ITA, state-level rollup |
Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program
Reportable Incident Timeline
Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Mendel Plumbing & Heating to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.
- 2024: 5 reportable incidents · 5 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2023: 5 reportable incidents · 5 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2022: 8 reportable incidents · 8 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2020: 6 reportable incidents · 6 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2019: 7 reportable incidents · 7 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
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 |
What this grade means for you
Use this grade as a relative read on Mendel Plumbing & Heating's reported OSHA injury record versus its Air system balancing and testing peers, not a verdict on whether any single site is safe today.
- At 398% of the Air system balancing and testing benchmark, Mendel Plumbing & Heating reports more injuries than typical peers, ask specifically how the employer is reducing them. Know your rights
- Judge this record against the wider Air system balancing and testing sector, where injury rates vary widely, before comparing it in isolation. See the industry
- Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another
Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.
Frequently Asked Questions
What is Mendel Plumbing & Heating's safety grade?
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Similar Employers
Matched by safety record across the industry, by workforce size within Illinois, and by nearby establishments in St. Charles - a different peer set than the category browse links below.
Similar TCR (~11.1)
Similar size (~67 workers)
Read our methodology - how this data is sourced, computed, and verified.
Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.