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

Mega Mechanical Systems Corp

Name: Mega Mechanical Systems Corp Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Glastonbury, CT · ~59 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 1.7
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Mega Mechanical Systems Corp runs at 60% of its industry's injury rate - safer than the typical Heating, ventilation and air-conditioning (HVAC) contractors workplace, earning a grade B.

Mega Mechanical Systems Corp: 1.7 TCR = 60% of Heating, ventilation and air-conditioning (HVAC) contractors BLS 2.8 · 2y Form 300A (see methodology below)

Mega Mechanical Systems Corp safety composite

Mega Mechanical Systems Corp 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).

71/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.67 per 100 workers

Safer than 75% 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

−0.6

2023→2024

Mega Mechanical Systems Corp injury rate improved

Mega Mechanical Systems Corp's TCR fell 0.6 from 2.0 in 2023 to 1.4 in 2024. Peak filing year was 2023 at 2.0 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2023=2.0 · 2024=1.4

OSHA ITA Form 300A scorecard

Establishment book 238220 · Glastonbury, CT AT/BELOW-IND · SMALL

Grade B · TCR 1.7 · 60% of ind

DART 0.0 DART
RANK #7/54
PHOTO Brown Sprinkler Corp…
BOOK 2y book
INJ 2 inj
SIZE ~59 FTE

Nearest TCR peer: Brown Sprinkler Corporation (Indianapolis, IN) (0.0 TCR gap)

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This site

1.7
Brown Sprinkle

1.7
Ravenswood

1.7
BM4

1.7
Ben Franklin P

1.7

What this shows Mega Mechanical Systems Corp averages 1.7 TCR (60% of the Heating, ventilation and air-conditioning (HVAC) contractors BLS benchmark).

Mega Mechanical Systems Corp TCR series: 2023=2 · 2024=1.4 · BLS 2.8

Where Mega Mechanical Systems Corp falls in its industry

5,793 Heating, ventilation and air-c establishments

Safer than 75% of graded establishments in this industry, whose median TCR is 3.3.

Grade B

More dangerous than peersSafer than peers

Narrower to Connecticut alone (the establishments it most directly competes with for workers and contracts): ranked #7 safest of 54 Heating, ventilation and air-c employers in Connecticut.

Mega Mechanical Systems Corp (59 employees, TCR 1.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Mega Mechanical Systems Corp 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	Illnesses	Fatalities
2024	1.4	0.0	1	0	0
2023	2.0	2.0	1	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CT · Glastonbury

5,793 Heating, ventilation and air-conditioning (HVAC) contractors employers nationwide with a credible TCR · 7,008 rated employers in Connecticut with headcount on file · 61 employers in Glastonbury, CT · 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	Brown Sprinkler Corporation (Indianapolis, IN)	INDIANAPOLIS, IN	1.7 TCR
NAICS-TCR	Ravenswood	RAVENSWOOD, WV	1.7 TCR
NAICS-TCR	BM4	PRATTVILLE, AL	1.7 TCR
NAICS-TCR	Ben Franklin Plumbing	WILMINGTON, DE	1.7 TCR
STATE-SIZE	Eversource - Norwalk Gas	NORWALK	59 FTE
STATE-SIZE	90007870 General Dynamics	GROTON	59 FTE
STATE-SIZE	Nations Roof of New England	WEST HAVEN	59 FTE
STATE-SIZE	Great American Donut Manufacturing Inc.	PLAINVILLE	59 FTE
CITY-NEAR	Company Wide	Glastonbury	583 FTE
CITY-NEAR	TheKey - CT, Glastonbury (100 Western Blvd.)	Glastonbury	434 FTE
CITY-NEAR	Glastonbury Town Hall	Glastonbury	406 FTE
CITY-NEAR	10336 Glastonbury	Glastonbury	290 FTE
NAT-TCR	Ballco Manufacturing, Inc	Aurora, IL	1.7 TCR
NAT-TCR	BioUrja Renewables, LLC	Peoria, IL	1.7 TCR
NAT-TCR	Palmerton	Palmerton, PA	1.7 TCR
NAT-TCR	Dee Cramer	Holly, MI	1.7 TCR
NAT-SIZE	Snyder Manufacturing Inc.	Dover, OH	59 FTE
NAT-SIZE	Dakota Blenders	St. Louis, MO	59 FTE
NAT-SIZE	Production Automation Inc.	Montgomery, AL	59 FTE
NAT-SIZE	Unilock New York, Inc. Boston Division	Uxbridge, MA	59 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. 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.