Company lists · Data refreshed October 2026

Top 25 Emergency mechanical contractors based in the United States

Name: Emergency mechanical contractors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 12,715 companies tracked

RevenueBase identified 12,715 company matches for emergency mechanical contractors associated with the United States as of October 2026 and tracks 146,140 professional contacts across them, including 47,678 with verified work emails. Houston is the largest hub.

This list covers company matches for emergency mechanical contractors 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 October 12, 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 Oct 12, 2026 How this list was built

12,715Companies

146,140Contacts tracked

47,678Verified emails

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The 25 largest emergency mechanical contractors based in the United States

Ranked by team size

Top 25 of 12,715 company matches for emergency mechanical contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Oct 12, 2026	5,001-10,000	2,573 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	American Residential Services	Exact match	Memphis, TN, United StatesHQ recorded Oct 12, 2026	5,001-10,000	1,948 contacts →
	Exact match “American Residential Services (ARS®/Rescue Rooter®) is one of the nation’s largest providers of heating, air conditioning, indoor air quality, plumbing, drain cleaning…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Service Experts	Exact match	Richardson, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,509 contacts →
	Exact match “Service Experts is North America's leading HVAC, Plumbing & Electrical company with 75+ locations nationwide.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Mckenney's, INC	Exact match	Atlanta, GA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,088 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	LEE Company	Exact match	Franklin, TN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,049 contacts →
	Exact match “Since 1944, we’ve been family-owned and family-focused, built on values that last and a mission that matters.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Cmta, INC	Exact match	Louisville, KY, United StatesHQ recorded Oct 12, 2026	501-1,000	1,016 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	AHERN	Exact match	Fond Du Lac, WI, United StatesHQ recorded Oct 12, 2026	1,001-5,000	884 contacts →
	Exact match “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Coolsys	Exact match	Brea, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	711 contacts →
	Exact match “CoolSys solves the most complex challenges in refrigeration, air conditioning, heating, engineering, and energy management.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	F.E. Moran Group Of Companies	Exact match	Northbrook, IL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	592 contacts →
	Exact match “At F.E.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Climate Pros, LLC	Exact match	Glendale Heights, IL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	562 contacts →
	Exact match “At Climate Pros, LLC, we are a leading commercial refrigeration and HVAC company specializing in the design, construction, and servicing of refrigeration systems across thousands…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	ONE Hour Heating & AIR Conditioning	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 12, 2026	1,001-5,000	556 contacts →
	Exact match “When homeowners want a reliable heater or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Deem, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	537 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 · Oct 12, 2026 · View company records in RevenueBase
14	The Miner Corporation	Exact match	Grapevine, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	461 contacts →
	Exact match “Miner is the nationally recognized leader in emergency repair service for docks, doors, glass and more.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Horizon Services, LLC	Exact match	Wilmington, DE, United StatesHQ recorded Oct 12, 2026	501-1,000	458 contacts →
	Exact match “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Guarantee Electrical Company	Exact match	St. Louis, MO, United StatesHQ recorded Oct 12, 2026	501-1,000	447 contacts →
	Exact match “A full-service electrical contractor since 1902, providing capability, performance, and legendary innovation in new construction, design-build, low-voltage systems, energy…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Pacific RIM Mechanical	Exact match	San Diego, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	441 contacts →
	Exact match “At Pacific Rim Mechanical, we deliver comprehensive mechanical contracting and facility services across Southern California.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Romanoff Group	Exact match	Gahanna, OH, United StatesHQ recorded Oct 12, 2026	1,001-5,000	422 contacts →
	Exact match “The Romanoff Group of Companies has been dedicated to providing specialized electrical, plumbing, and heating and cooling services since 1992.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Source Refrigeration & Hvac	Exact match	Brea, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	421 contacts →
	Exact match “For up-to-date information, please see the CoolSys profile page.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Strada Services	Exact match	Sanford, FL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	415 contacts →
	Exact match “Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	John W. Danforth Company	Exact match	Tonawanda, NY, United StatesHQ recorded Oct 12, 2026	501-1,000	410 contacts →
	Exact match “We are powered by the best people in the industry.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	TWC Services, INC	Exact match	Des Moines, IA, United StatesHQ recorded Oct 12, 2026	501-1,000	384 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Aire Serv Heating And AIR Conditioning	Exact match	Waco, TX, United StatesHQ recorded Oct 12, 2026	201-500	383 contacts →
	Exact match “For consumer services visit To discover more about franchise opportunities with Aire Serv® in your area visit Established in 1992, Aire Serv® is a global franchise organization…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Hiller Plumbing, Heating, Cooling & Electrical	Exact match	Nashville, TN, United StatesHQ recorded Oct 12, 2026	501-1,000	370 contacts →
	Exact match “Hiller provides residential and commercial service and repair throughout Tennessee, Southern Kentucky, Northern Alabama, Southeastern Arkansas, Northeastern Mississippi, Northern…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	B&i Contractors INC	Exact match	Fort Myers, FL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	369 contacts →
	Exact match “Award-winning full-service mechanical, service, electrical, and plumbing contractor specializing in commercial, institutional, and industrial construction, restoration and service.” Recorded in the RevenueBase company graph · Oct 12, 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 “emergency mechanical contractors”. 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 12,715 emergency mechanical contractors based in the United States

See the full list, filter by size, metro and specialty, and access 47,678 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Emergency mechanical contractors based in the United States at a glance

As of Oct 12, 2026

32.6%Verified-email coverage

11.5Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Houston

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

5,505

11-50

4,975

51-200

1,671

201-500

312

501-1,000

1,001-5,000

5,001-10,000

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 12,715 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 “emergency mechanical contractors” 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 47,678 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 October 12, 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.

Emergency mechanical contractors 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 “emergency mechanical contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many emergency mechanical contractors are there based in the United States?

RevenueBase identified 12,715 company matches for emergency mechanical contractors associated with the United States as of October 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?

Acco Engineered Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most emergency mechanical contractors?

Houston leads with 176 company records, followed by New York (132) and San Antonio (86).

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 47,678 professional contacts with verified work emails tracked across these 12,715 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 October 12, 2026.

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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.