PLUMBING, HEATING, AC DUCTWORK-SHOP AND OUT · California

Mk Heating and Air Conditioning, Inc.

Chatsworth, CA · ~27 workers · 7 years of OSHA Injury Tracking Application data.

C
Average Safety Record
2.7
Avg TCR
2.8
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Mk Heating and Air Conditioning, Inc. runs at 98% of its industry's injury rate - about level with the typical PLUMBING, HEATING, AC DUCTWORK-SHOP AND OUT workplace, earning a grade C.

Mk Heating and Air Conditioning, Inc.: 2.7 TCR = 98% of PLUMBING, HEATING, AC DUCTWORK-SHOP AND OUT BLS 2.8 · 7y Form 300A (see methodology below)

Mk Heating and Air Conditioning, Inc. safety composite

Mk Heating and Air Conditioning, Inc. scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on fatalities (safer than 51%), 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).

C

64/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.74 per 100 workers

Safer than 57% 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

−8.2

2018→2024

Mk Heating and Air Conditioning, Inc. injury rate improved

Mk Heating and Air Conditioning, Inc.'s TCR fell 8.2 from 8.2 in 2018 to 0.0 in 2024. Peak filing year was 2018 at 8.2 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2018=8.2 · 2019=0.0 · 2020=0.0 · 2021=0.0 · 2022=7.2 · 2023=3.7 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Chatsworth, CA AT/BELOW-IND · SMALL

Grade C · TCR 2.7 · 98% of ind

  • DART 0.0 DART
  • RANK #211/594
  • PHOTO FRESH MEADOW CHILLER…
  • BOOK 7y book
  • INJ 5 inj
  • SIZE ~27 FTE

Nearest TCR peer: FRESH MEADOW CHILLER SERVICES, LLC (0.0 TCR gap)

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

Mk Heating and Air Conditioning, Inc. in the TCR neighbourhood

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

TCR

What this shows Mk Heating and Air Conditioning, Inc. averages 2.7 TCR (98% of the PLUMBING, HEATING, AC DUCTWORK-SHOP AND OUT BLS benchmark).

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

Mk Heating and Air Conditioning, Inc. TCR series: 2018=8.2 · 2019=0 · 2020=0 · 2021=0 · 2022=7.2 · 2023=3.7 · 2024=0 · BLS 2.8

Where Mk Heating and Air Conditioning, Inc. falls in its industry

5,793 PLUMBING, HEATING, AC DUCTWORK establishments

Safer than 57% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #211 safest of 594 PLUMBING, HEATING, AC DUCTWORK employers in California.

Mk Heating and Air Conditioning, Inc. (27 employees, TCR 2.7) 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 Mk Heating and Air Conditioning, Inc.
Mk Heating and Air Conditioning, Inc. (27 employees, TCR 2.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Mk Heating and Air Conditioning, Inc. has fewer employees than the PLUMBING, HEATING, AC DUCTWORK-SHOP AND median and a lower 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 0.0 0.0 0 0 0
2023 3.7 0.0 1 0 0
2022 7.2 3.6 2 0 0
2021 0.0 0.0 0 0 0
2020 0.0 0.0 0 0 0
2019 0.0 0.0 0 0 0
2018 8.2 8.2 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Chatsworth

5,793 PLUMBING, HEATING, AC DUCTWORK-SHOP AND OUT employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 132 employers in Chatsworth, CA · 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 FRESH MEADOW CHILLER SERVICES, LLC 2.7 TCR
NAICS-TCR Bay City Mechanical Inc. 2.7 TCR
NAICS-TCR Lakes Heating 2.7 TCR
NAICS-TCR CoolSys C&I Albuquerque Service 2.7 TCR
STATE-SIZE HQ 27 FTE
STATE-SIZE Medeiros Farms Vineyards 27 FTE
STATE-SIZE SAND RANCH 27 FTE
STATE-SIZE San Bernabe Vineyards 27 FTE
CITY-NEAR Thibiant International 666 FTE
CITY-NEAR AMZL : DLA4 620 FTE
CITY-NEAR Noble House Home Furnishings 562 FTE
CITY-NEAR kdc/ one 540 FTE
NAT-TCR 052 - Fairfax Va 2.7 TCR
NAT-TCR Potter Electric Signal Company 2.7 TCR
NAT-TCR Miami Fl - 921 2.7 TCR
NAT-TCR Hajoca 743 2.7 TCR
NAT-SIZE Hamlet Cleaners, Inc. 27 FTE
NAT-SIZE Redwood Tech Force, Inc. 27 FTE
NAT-SIZE Mcwilliams and Son, Inc. 27 FTE
NAT-SIZE Schoolyard Square 27 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, 2020, 2019, 2018. 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.