Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation · North Dakota

One Hour Heating & Air

Grand Forks, ND · ~28 workers · 2 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
6.9
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

One Hour Heating & Air runs at 245% of its industry's injury rate - far more dangerous than the typical Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation workplace, earning a grade F.

One Hour Heating & Air: 6.9 TCR = 245% of Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation BLS 2.8 · 2y Form 300A (see methodology below)

One Hour Heating & Air safety composite

One Hour Heating & Air scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on total case rate (tcr) (safer than 22%), 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

50/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 6.87 per 100 workers

Safer than 22% 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

−13.7

2017→2018

One Hour Heating & Air injury rate improved

One Hour Heating & Air's TCR fell 13.7 from 13.7 in 2017 to 0.0 in 2018. Peak filing year was 2017 at 13.7 TCR. In 2018, DART was 0× this establishment's average TCR (severity share of cases).

2017=13.7 · 2018=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Grand Forks, ND ABOVE-IND · SMALL

Grade F · TCR 6.9 · 245% of ind

  • DART 0.0 DART
  • RANK #25/36
  • PHOTO Rozga Plumbing and H…
  • BOOK 2y book
  • INJ 4 inj
  • SIZE ~28 FTE

Nearest TCR peer: Rozga Plumbing and Heating Corporation (0.0 TCR gap)

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

One Hour Heating & Air in the TCR neighbourhood

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

TCR

What this shows One Hour Heating & Air averages 6.9 TCR (245% of the Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation BLS benchmark).

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

One Hour Heating & Air TCR series: 2017=13.7 · 2018=0 · BLS 2.8

Where One Hour Heating & Air falls in its industry

5,793 Heating and ventilation system establishments

Safer than 22% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to North Dakota alone (the establishments it most directly competes with for workers and contracts): ranked #25 safest of 36 Heating and ventilation system employers in North Dakota.

One Hour Heating & Air (28 employees, TCR 6.9) 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 One Hour Heating & Air
One Hour Heating & Air (28 employees, TCR 6.9) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

One Hour Heating & Air has fewer employees than the Heating and ventilation system component 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 0.0 0.0 0 0 0
2017 13.7 6.9 4 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · ND · Grand Forks

5,793 Heating and ventilation system component (e.g., air registers, diffusers, filters, grilles, sound attenuators) installation employers nationwide with a credible TCR · 1,696 rated employers in North Dakota with headcount on file · 175 employers in Grand Forks, ND · 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 Rozga Plumbing and Heating Corporation 6.9 TCR
NAICS-TCR Richard Young Air Conditioning 6.9 TCR
NAICS-TCR Haller Enterprises - York 6.9 TCR
NAICS-TCR Terrys Heating and Air Conditioning ID, lLC 6.9 TCR
STATE-SIZE Capex Oilfield Services Inc. 28 FTE
STATE-SIZE DC POWER TONG LLC 28 FTE
STATE-SIZE Grand Forks Service Center-BB 28 FTE
STATE-SIZE Main 28 FTE
CITY-NEAR Altru Health System Med Park 2,709 FTE
CITY-NEAR LM Wind Power 907 FTE
CITY-NEAR LM Wind Power : Grand Forks 614 FTE
CITY-NEAR Valley Eldercare Center 606 FTE
NAT-TCR HouseWorks, LLC 6.9 TCR
NAT-TCR Armstrong Services DBA Legend Oaks Northwest Houston 6.9 TCR
NAT-TCR Yokohama Tire Manufacturing Virginia, LLC 6.9 TCR
NAT-TCR Globe Manufacturing Company-OK, LLC 6.9 TCR
NAT-SIZE Duke Energy Center Management Office 28 FTE
NAT-SIZE Princeton Transportation -Est 28 FTE
NAT-SIZE Fifth Ave 28 FTE
NAT-SIZE REN543 AllGood Dalton 28 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. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.