HVAC (heating, ventilation and air-conditioning) contractors · California

Western Allied Mechanical

Name: Western Allied Mechanical Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Menlo Park, CA · ~266 workers · 5 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 2.1
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Western Allied Mechanical runs at 74% of its industry's injury rate - safer than the typical HVAC (heating, ventilation and air-conditioning) contractors workplace, earning a grade B.

Western Allied Mechanical: 2.1 TCR = 74% of HVAC (heating, ventilation and air-conditioning) contractors BLS 2.8 · 5y Form 300A (see methodology below)

Western Allied Mechanical safety composite

Western Allied Mechanical scores strongest on total case rate (tcr) (safer than 67% of same-industry peers) and weakest on dart rate (safer than 29%), 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).

50/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 2.08 per 100 workers

Safer than 67% of industry peers
DART rate: F 3.04 per 100 workers

Safer than 29% 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%).

Rising injury rate

Western Allied Mechanical: 2.5 → 3.0 TCR

Peak year 2022 @ 3.0 TCR · DART/TCR 1.46× in 2022

Western Allied Mechanical's TCR rose 0.5 from 2.5 in 2017 to 3.0 in 2022. In 2022, DART was 1.46× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Menlo Park, CA AT/BELOW-IND · MID

Grade B · TCR 2.1 · 74% of ind

DART 3.0 DART
RANK #168/594
PHOTO Mechanical Systems, …
BOOK 5y book
INJ 25 inj
SIZE ~266 FTE

Nearest TCR peer: Mechanical Systems, Inc. (0.0 TCR gap)

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This site

2.1
Mechanical Sys

2.1
ACCO Building

2.1
King-Lar Compa

2.1
BAE Systems

2.1

What this shows Western Allied Mechanical averages 2.1 TCR (74% of the HVAC (heating, ventilation and air-conditioning) contractors BLS benchmark).

Western Allied Mechanical TCR series: 2017=2.5 · 2019=1.7 · 2020=1.9 · 2021=1.2 · 2022=3 · BLS 2.8

Where Western Allied Mechanical falls in its industry

5,793 HVAC (heating, ventilation and establishments

Safer than 67% of graded establishments in this industry, whose median TCR is 3.3.

Grade B

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #168 safest of 594 HVAC (heating, ventilation and employers in California.

Western Allied Mechanical (266 employees, TCR 2.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Western Allied Mechanical has more employees than the HVAC (heating, ventilation and air-condi 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
2022	3.0	3.0	8
2021	1.2	0.8	3
2020	1.9	1.9	5
2019	1.7	1.7	4
2017	2.5	2.5	5

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Menlo Park

5,793 HVAC (heating, ventilation and air-conditioning) contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 62 employers in Menlo Park, CA · 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	Mechanical Systems, Inc.	OWENSBORO, KY	2.1 TCR
NAICS-TCR	ACCO Building Services Las Vegas	LAS VEGAS, NV	2.1 TCR
NAICS-TCR	King-Lar Company	DECATUR, IL	2.1 TCR
NAICS-TCR	BAE Systems	RADFORD, VA	2.1 TCR
STATE-SIZE	Ratto Bros Inc	MODESTO	266 FTE
STATE-SIZE	Cassin Ranch	WATSONVILLE	266 FTE
STATE-SIZE	Moonlight Packing Company, LLC Plant 1	REEDLEY	266 FTE
STATE-SIZE	CANUS Services, Inc.	LAGUNA NIGUEL	266 FTE
CITY-NEAR	SH Menlo Park	Menlo Park	628 FTE
CITY-NEAR	Rudolph and Sletten	Menlo Park	516 FTE
CITY-NEAR	Rosewood Sand Hill	Menlo Park	430 FTE
CITY-NEAR	Care Indeed Inc	Menlo Park	381 FTE
NAT-TCR	4408 Portland East Recycle	Portland, OR	2.1 TCR
NAT-TCR	4532 Longview Paper Mill	Longview, WA	2.1 TCR
NAT-TCR	Salt Lake City 40050	Midvale, UT	2.1 TCR
NAT-TCR	MTI Main Plant	St. Albans, VT	2.1 TCR
NAT-SIZE	5166 Martinsville Assembly	Ridgeway, VA	266 FTE
NAT-SIZE	Brien McMahon High School	Norwalk, CT	266 FTE
NAT-SIZE	Spokane Bakery	Spokane Valley, WA	266 FTE
NAT-SIZE	FG Plant - Moses Lake	Moses Lake, WA	266 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: 2022, 2021, 2020, 2019, 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.