Plumbing and heating contractors · New Hampshire

Denron Main Office

Manchester, NH · ~141 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
6.1
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Denron Main Office runs at 217% of its industry's injury rate - far more dangerous than the typical Plumbing and heating contractors workplace, earning a grade F.

Denron Main Office: 6.1 TCR = 217% of Plumbing and heating contractors BLS 2.8 · 3y Form 300A (see methodology below)

Denron Main Office safety composite

Denron Main Office scores strongest on dart rate (safer than 56% of same-industry peers) and weakest on total case rate (tcr) (safer than 27%), 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

43/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 6.08 per 100 workers

Safer than 27% of industry peers

DART rate
C 0.78 per 100 workers

Safer than 56% 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

Denron Main Office: 5.0 → 7.1 TCR

Peak year 2018 @ 7.1 TCR · DART/TCR 0.13× in 2018

Denron Main Office's TCR rose 2.1 from 5.0 in 2016 to 7.1 in 2018. In 2018, DART was 0.13× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Manchester, NH ABOVE-IND · MID

Grade F · TCR 6.1 · 217% of ind

  • DART 0.8 DART
  • RANK #18/31
  • PHOTO Climate Pros Hayward
  • BOOK 3y book
  • INJ 23 inj
  • SIZE ~141 FTE

Nearest TCR peer: Climate Pros Hayward (0.0 TCR gap)

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

Denron Main Office in the TCR neighbourhood

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

TCR

What this shows Denron Main Office averages 6.1 TCR (217% of the Plumbing and heating contractors BLS benchmark).

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

Denron Main Office TCR series: 2016=5 · 2017=6.2 · 2018=7.1 · BLS 2.8

Where Denron Main Office falls in its industry

5,793 Plumbing and heating contracto establishments

Safer than 27% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to New Hampshire alone (the establishments it most directly competes with for workers and contracts): ranked #18 safest of 31 Plumbing and heating contracto employers in New Hampshire.

Denron Main Office (141 employees, TCR 6.1) 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 Denron Main Office
Denron Main Office (141 employees, TCR 6.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Denron Main Office has more employees than the Plumbing and heating contractors 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
2018 7.1 0.8 9 0 0
2017 6.2 5.4 8 0 0
2016 5.0 5.0 6 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · NH · Manchester

5,793 Plumbing and heating contractors employers nationwide with a credible TCR · 2,718 rated employers in New Hampshire with headcount on file · 253 employers in Manchester, NH · 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 Climate Pros Hayward 6.1 TCR
NAICS-TCR Benchmark Mechanical 6.1 TCR
NAICS-TCR Kinney's Commercial Inc 6.1 TCR
NAICS-TCR Lochard Plumbing, Heating and Air Conditioning 6.1 TCR
STATE-SIZE LSNE Commerce Drive 141 FTE
STATE-SIZE 2807-2322 141 FTE
STATE-SIZE NAI-0033-0033-00686 FAC-00686-WINDHAM-NH 141 FTE
STATE-SIZE 2138 141 FTE
CITY-NEAR Point32Health Manchester 4,440 FTE
CITY-NEAR Elliot Hospital 2,745 FTE
CITY-NEAR Catholic Medical Center 2,086 FTE
CITY-NEAR 15966 1,154 FTE
NAT-TCR Coppel Quill FC 6.1 TCR
NAT-TCR 757 Town & Country Industries 6.1 TCR
NAT-TCR Rehme Steel Windows & Doors 6.1 TCR
NAT-TCR 4769-756-Pottery Barn 6.1 TCR
NAT-SIZE Laird Controls North America Inc. - Warren 141 FTE
NAT-SIZE Santa Rosa Care Center 141 FTE
NAT-SIZE RGH Enterprises - Cranbury, NJ 141 FTE
NAT-SIZE Summit Ridge Center 141 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: 2018, 2017, 2016. 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.