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

Maryland Mechanical Systems, Inc.

Name: Maryland Mechanical Systems, Inc. Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Baltimore, MD · ~54 workers · 7 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 1.5
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Maryland Mechanical Systems, Inc. runs at 55% of its industry's injury rate - safer than the typical Heating, ventilation and air-conditioning (HVAC) contractors workplace, earning a grade B.

Maryland Mechanical Systems, Inc.: 1.5 TCR = 55% of Heating, ventilation and air-conditioning (HVAC) contractors BLS 2.8 · 7y Form 300A (see methodology below)

Maryland Mechanical Systems, Inc. safety composite

Maryland Mechanical Systems, 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).

72/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.53 per 100 workers

Safer than 77% 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%).

Maryland Mechanical Systems, Inc. held a steady TCR band

Maryland Mechanical Systems, Inc.'s TCR held near 0.0 from 0.0 in 2017 to 0.0 in 2024. Peak filing year was 2018 at 5.2 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=0.0 · 2018=5.2 · 2019=0.0 · 2021=1.9 · 2022=1.8 · 2023=1.8 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Baltimore, MD AT/BELOW-IND · SMALL

Grade B · TCR 1.5 · 55% of ind

DART 0.0 DART
RANK #34/121
PHOTO Winger Contracting C…
BOOK 7y book
INJ 6 inj
SIZE ~54 FTE

Nearest TCR peer: Winger Contracting Company (0.0 TCR gap)

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

This site

1.5
Winger Contrac

1.5
Main Office

1.5
Ahern Twin Cit

1.5
Hiller Charles

1.5

What this shows Maryland Mechanical Systems, Inc. averages 1.5 TCR (55% of the Heating, ventilation and air-conditioning (HVAC) contractors BLS benchmark).

Maryland Mechanical Systems, Inc. TCR series: 2017=0 · 2018=5.2 · 2019=0 · 2021=1.9 · 2022=1.8 · 2023=1.8 · 2024=0 · BLS 2.8

Where Maryland Mechanical Systems, Inc. falls in its industry

5,793 Heating, ventilation and air-c establishments

Safer than 77% of graded establishments in this industry, whose median TCR is 3.3.

Grade B

More dangerous than peersSafer than peers

Narrower to Maryland alone (the establishments it most directly competes with for workers and contracts): ranked #34 safest of 121 Heating, ventilation and air-c employers in Maryland.

Maryland Mechanical Systems, Inc. (54 employees, TCR 1.5) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Maryland Mechanical Systems, Inc. has fewer employees than the Heating, ventilation and air-conditionin 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
2024	0.0	0.0	0
2023	1.8	0.0	1
2022	1.8	0.0	1
2021	1.9	1.9	1
2019	0.0	0.0	0
2018	5.2	3.5	3
2017	0.0	0.0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MD · Baltimore

5,793 Heating, ventilation and air-conditioning (HVAC) contractors employers nationwide with a credible TCR · 7,213 rated employers in Maryland with headcount on file · 1,031 employers in Baltimore, MD · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Winger Contracting Company	OTTUMWA, IA	1.5 TCR
NAICS-TCR	Main Office	FRESNO, CA	1.5 TCR
NAICS-TCR	Ahern Twin Cities	MINNEAPOLIS, MN	1.5 TCR
NAICS-TCR	Hiller Charleston	NORTH CHARLESTON, SC	1.5 TCR
STATE-SIZE	6728-00030023-25	SALISBURY	54 FTE
STATE-SIZE	Conowingo	DARLINGTON	54 FTE
STATE-SIZE	R E Harrington Plumbing & Heating Co. Inc.	BALTIMORE	54 FTE
STATE-SIZE	FiberPlus, Inc.	JESSUP	54 FTE
CITY-NEAR	Johns Hopkins Hospital	Baltimore	12,523 FTE
CITY-NEAR	University of Maryland Medical Center	Baltimore	7,980 FTE
CITY-NEAR	Sinai Hospital of Baltimore	Baltimore	7,770 FTE
CITY-NEAR	NGMS-T340	Baltimore	6,180 FTE
NAT-TCR	Gunter Construction	Kansas City, KS	1.5 TCR
NAT-TCR	Carson Valley Inn	Minden, NV	1.5 TCR
NAT-TCR	Gates	Iola, KS	1.5 TCR
NAT-TCR	IDT Tools	Frankfort, KY	1.5 TCR
NAT-SIZE	VSF Corporation	Vincent, AL	54 FTE
NAT-SIZE	Valley Transit	Walla Walla, WA	54 FTE
NAT-SIZE	Dixon Construction	Correctionville, IA	54 FTE
NAT-SIZE	Tech Etch Litchfield	Litchfield, MN	54 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, 2019, 2018, 2017. 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.