Company lists · Data refreshed September 2026

Top 25 Mep engineering firms based in the United States

Name: Mep engineering firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 4,277 companies tracked

RevenueBase identified 4,277 company matches for mep engineering firms associated with the United States as of September 2026 and tracks 116,052 professional contacts across them, including 54,132 with verified work emails. New York is the largest hub.

This list covers company matches for mep engineering firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

4,277Companies

116,052Contacts tracked

54,132Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest mep engineering firms based in the United States

Ranked by team size

Top 25 of 4,277 company matches for mep engineering firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Colliers Engineering & Design	Exact match	Holmdel, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,049 contacts →
	Exact match “Colliers Engineering & Design, an affiliate of Colliers, is a trusted provider of multi-discipline engineering and architecture, design and consulting services to public and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,666 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	10001+	1,330 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,077 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Henderson Engineers	Exact match	Lenexa, KS, United StatesHQ recorded Sep 17, 2026	501-1,000	1,040 contacts →
	Exact match “Henderson Engineers is a national building systems design firm with a wide array of engineering services and a portfolio representing a full range of markets including business…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Affiliated Engineers, INC	Exact match	Madison, WI, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,012 contacts →
	Exact match “Affiliated Engineers, Inc.(AEI) provides engineering leadership and whole-mission solutions for complex building, energy, and utility projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Sep 17, 2026	501-1,000	936 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Stellar	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 17, 2026	501-1,000	899 contacts →
	Exact match “Stellar, headquartered in Jacksonville, Florida, is a fully integrated firm focusing on design, engineering, construction, refrigeration, and mechanical and electrical services…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Mesa Associates, INC	Exact match	Madison, AL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	897 contacts →
	Exact match “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Coffman Engineers	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	501-1,000	859 contacts →
	Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	PAE	Exact match	Portland, OR, United StatesHQ recorded Sep 17, 2026	201-500	744 contacts →
	Exact match “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Kinetics	Exact match	Livermore, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	734 contacts →
	Exact match “Founded in 1973, Kinetics is a full-service process and mechanical contractor specializing in the design and installation of process, mechanical, plumbing and HVAC systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	ME Engineers	Exact match	Golden, CO, United StatesHQ recorded Sep 17, 2026	201-500	696 contacts →
	Exact match “ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	H2m Architects Engineers	Exact match	Melville, NY, United StatesHQ recorded Sep 17, 2026	501-1,000	692 contacts →
	Exact match “About H2M H2M architects + engineers is a multi-disciplinary professional consulting and design firm, proud of its long history of client service and consistent ability to meet…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	C&s Companies	Exact match	Syracuse, NY, United StatesHQ recorded Sep 17, 2026	501-1,000	657 contacts →
	Exact match “Founded in 1968, the C&S Companies are known nationwide for client-focused engineering, architecture, planning, environmental, and construction services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Whitman, Requardt And Associates, LLP	Exact match	Baltimore, MD, United StatesHQ recorded Sep 17, 2026	501-1,000	601 contacts →
	Exact match “Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	571 contacts →
	Exact match “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Enventure Engineering	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	501-1,000	569 contacts →
	Exact match “Enventure is a trusted provider of Building Engineering, Plant Design, and Compliance solutions with offices in the Chicago and delivery centres in Bangalore, Shivamogga, Hubli…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	DLB Associates	Exact match	Neptune, NJ, United StatesHQ recorded Sep 17, 2026	201-500	568 contacts →
	Exact match “DLB Associates is an MEP and Technology consulting engineering firm built for people who want to do meaningful, high-impact work.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	F.E. Moran Group Of Companies	Exact match	Northbrook, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	564 contacts →
	Exact match “At F.E.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	BL Companies	Exact match	Meriden, CT, United StatesHQ recorded Sep 17, 2026	201-500	550 contacts →
	Exact match “BL Companies is committed to providing quality, individualized service to clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Vanderweil Engineers	Exact match	Boston, MA, United StatesHQ recorded Sep 17, 2026	201-500	545 contacts →
	Exact match “Vanderweil is a mechanical, electrical, plumbing, fire protection, technology, sustainability, commissioning, and power engineering firm dedicated to providing customized and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Environmental AIR Systems	Exact match	High Point, NC, United StatesHQ recorded Sep 17, 2026	1,001-5,000	545 contacts →
	Exact match “For generations, EAS Companies has been an innovative provider delivering complete solutions in mechanical, electrical, plumbing, building services, controls, and engineered…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Deem, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 17, 2026	1,001-5,000	539 contacts →
	Exact match “DEEM, LLC is a mechanical and electrical company centrally located in Fishers, Indiana with satellite offices throughout the Midwest down to the southeastern United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “mep engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 4,277 mep engineering firms based in the United States

See the full list, filter by size, metro and specialty, and access 54,132 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Mep engineering firms based in the United States at a glance

As of Sep 17, 2026

46.6%Verified-email coverage

27.1Average contacts per company

11-50Median size (employees)

3.1%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,772

11-50

1,604

51-200

649

201-500

165

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 4,277 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “mep engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 54,132 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Mep engineering firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “mep engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mep engineering firms are there based in the United States?

RevenueBase identified 4,277 company matches for mep engineering firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Colliers Engineering & Design tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most mep engineering firms?

New York leads with 134 company records, followed by Houston (100) and Austin (51).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 54,132 professional contacts with verified work emails tracked across these 4,277 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,277 mep engineering firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Mep engineering firms by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.