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

Interstate Heating Co., Inc.

Sussex, WI · ~50 workers · 4 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
10.5
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Interstate Heating Co., Inc. runs at 375% of its industry's injury rate - far more dangerous than the typical Heating, ventilation and air-conditioning (HVAC) contractors workplace, earning a grade F.

Interstate Heating Co., Inc.: 10.5 TCR = 375% of Heating, ventilation and air-conditioning (HVAC) contractors BLS 2.8 · 4y Form 300A (see methodology below)

Interstate Heating Co., Inc. safety composite

Interstate Heating Co., Inc. scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 9%), 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

30/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 10.49 per 100 workers

Safer than 9% of industry peers

DART rate
D 2.11 per 100 workers

Safer than 38% 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

−3.5

2021→2024

Interstate Heating Co., Inc. injury rate improved

Interstate Heating Co., Inc.'s TCR fell 3.5 from 11.9 in 2021 to 8.4 in 2024. Peak filing year was 2023 at 15.3 TCR. In 2024, DART was 0.2× this establishment's average TCR (severity share of cases).

2021=11.9 · 2022=6.3 · 2023=15.3 · 2024=8.4

OSHA ITA Form 300A scorecard

Establishment book 238220 · Sussex, WI ABOVE-IND · SMALL

Grade F · TCR 10.5 · 375% of ind

  • DART 2.1 DART
  • RANK #137/154
  • PHOTO TFH-EB Inc. dba The …
  • BOOK 4y book
  • INJ 19 inj
  • SIZE ~50 FTE

Nearest TCR peer: TFH-EB Inc. dba The Waterworks (0.0 TCR gap)

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Interstate Heating Co., Inc. in the TCR neighbourhood

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

TCR

What this shows Interstate Heating Co., Inc. averages 10.5 TCR (375% 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

Interstate Heating Co., Inc. TCR series: 2021=11.9 · 2022=6.3 · 2023=15.3 · 2024=8.4 · BLS 2.8

Where Interstate Heating Co., Inc. falls in its industry

5,793 Heating, ventilation and air-c establishments

Safer than 9% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Wisconsin alone (the establishments it most directly competes with for workers and contracts): ranked #137 safest of 154 Heating, ventilation and air-c employers in Wisconsin.

Interstate Heating Co., Inc. (50 employees, TCR 10.5) 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 Interstate Heating Co., Inc.
Interstate Heating Co., Inc. (50 employees, TCR 10.5) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Interstate Heating Co., Inc. has fewer 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 8.4 2.1 4 0 0
2023 15.3 4.4 7 0 0
2022 6.3 6.3 3 0 0
2021 11.9 0.0 5 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · WI · Sussex

5,793 Heating, ventilation and air-conditioning (HVAC) contractors employers nationwide with a credible TCR · 12,834 rated employers in Wisconsin with headcount on file · 52 employers in Sussex, WI · 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 TFH-EB Inc. dba The Waterworks 10.5 TCR
NAICS-TCR O'Donnell Landscapes Inc 10.5 TCR
NAICS-TCR Vredevoogd Heating and Cooling 10.5 TCR
NAICS-TCR Brenner Corporation 10.5 TCR
STATE-SIZE Ferguson's Morningside Orchard LLC 50 FTE
STATE-SIZE Windsor 50 FTE
STATE-SIZE Pagels Ponderosa Cropping LLC 50 FTE
STATE-SIZE A&M Dittrich Mink Farm 50 FTE
CITY-NEAR SUSSEX WI 1,430 FTE
CITY-NEAR AMZL : DML2 614 FTE
CITY-NEAR Sussex IM, Inc. 394 FTE
CITY-NEAR BCD Sussex 349 FTE
NAT-TCR Sun Valley Landscaping 10.5 TCR
NAT-TCR Rock Creek Inn 10.5 TCR
NAT-TCR Delmarva Corrugated Packaging 10.5 TCR
NAT-TCR 3892 - Lake City FL FDC 10.5 TCR
NAT-SIZE Redmont Sign LLC DBA Stewart Signs 50 FTE
NAT-SIZE Panhandle Milling Dawn 50 FTE
NAT-SIZE JEGS Automotive, LLC - Columbus 50 FTE
NAT-SIZE Lake Hemet Municipal Water District 50 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, 2021. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.