Company lists · Data refreshed September 2026
Top 25 Heating contractors based in the United States
RevenueBase identified 14,556 heating contractors headquartered in the United States as of September 2026 and tracks 120,592 professional contacts across them, including 35,906 with verified work emails. Houston is the largest hub.
This list covers heating contractors headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest heating contractors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,664 contacts → | ||||
Partial evidence “Making it easier for HVACR contractors to do business.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,330 contacts → | ||||
Indirect evidence “Comfort Systems USA | Quality People.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 849 contacts → | ||||
Partial evidence “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 635 contacts → | ||||
Partial evidence “When industrial operations depend on heat that simply cannot fail, Chromalox brings unmatched technical knowledge and high‑performance electric heating solutions that stand the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 526 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 523 contacts → | ||||
Indirect evidence “In business for over 45 years, Texas AirSystems has grown to be recognized as one of the premier partners for commercial HVAC solutions in Texas, boasting over 500 associates…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 483 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 448 contacts → | ||||
Partial evidence “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 431 contacts → | ||||
Partial evidence “The Romanoff Group of Companies has been dedicated to providing specialized electrical, plumbing, and heating and cooling services since 1992.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 415 contacts → | ||||
Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 391 contacts → | ||||
Indirect evidence “Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 376 contacts → | ||||
Indirect evidence “Superheat was founded on the principle that cutting-edge technology can offer a Better.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 369 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 346 contacts → | ||||
Indirect evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 340 contacts → | ||||
Indirect evidence “Since 1962, Brady has been committed to delivering innovative, sustainable building solutions that drive long-term success for our customers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 339 contacts → | ||||
Partial evidence “We're America’s #1 local home heating oil and total home comfort services provider, with over 100 years experience helping customers save and keep comfortable at home.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 312 contacts → | ||||
Partial evidence “Providing the Arizona Valley with award-winning service in Heating, Cooling, Plumbing, and Drain Cleaning Service since 1974.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 303 contacts → | ||||
Partial evidence “Villara is one of the nation’s largest mechanical contractors.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 303 contacts → | ||||
Indirect evidence “At Goettl, our mission is to "Goettlize the Nation" by setting the industry standard in HVAC and plumbing services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 301 contacts → | ||||
Indirect evidence “In 1909, John E.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 297 contacts → | ||||
Indirect evidence “Kimbel Mechanical Systems, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 293 contacts → | ||||
Partial evidence “SVM is a full service mechanical contractor, specializing in design-build commercial HVAC, plumbing, and service / maintenance, including 24-hour emergency services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 286 contacts → | ||||
Indirect evidence “Superior Customer Service.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 285 contacts → | ||||
Partial evidence “The Hill Group is a Chicago-based mechanical contractor specializing in HVAC, plumbing, fire protection, testing/balancing, and commissioning.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 279 contacts → | ||||
Partial evidence “Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: heating contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names heating contractors.
- Partial evidence
- Its own public description names part of heating contractors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name heating contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 14,556 heating contractors based in the United States
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Heating contractors based in the United States at a glance
As of Sep 16, 2026Companies by employee count
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 14,556 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among heating contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “heating contractors”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names heating contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among heating contractors, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 35,906 across the full list. 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 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Heating contractors by metro
- Heating contractors in Houston172
- Heating contractors in New York159
- Heating contractors in San Antonio98
- Heating contractors in Phoenix92
- Heating contractors in Dallas72
- Heating contractors in Denver71
- Heating contractors in Tampa66
- Heating contractors in Jacksonville65
- Heating contractors in Indianapolis64
- Heating contractors in Las Vegas63
- Heating contractors in Miami60
- Heating contractors in Austin58
- Heating contractors in Charlotte56
- Heating contractors in San Diego56
- Heating contractors in Louisville53
- Heating contractors in Raleigh52
- Heating contractors in Mesa51
- Heating contractors in Chicago50
- Heating contractors in Orlando48
- Heating contractors in Springfield48
- Heating contractors in Tucson47
- Heating contractors in Los Angeles44
- Heating contractors in Richmond43
- Heating contractors in San Jose42
- Heating contractors in Albuquerque41
- Heating contractors in Fort Worth41
- Heating contractors in Portland40
- Heating contractors in Columbus39
- Heating contractors in Nashville39
- Heating contractors in Anaheim38
- Heating contractors in Colorado Springs38
- Heating contractors in Greenville38
- Heating contractors in Sarasota37
- Heating contractors in Tulsa36
- Heating contractors in Atlanta35
- Heating contractors in Fort Myers34
- Heating contractors in Rochester34
- Heating contractors in Sacramento34
- Heating contractors in Wilmington34
- Heating contractors in Arlington33
- Heating contractors in Columbia33
- Heating contractors in Lexington33
- Heating contractors in Canton31
- Heating contractors in Salt Lake City31
- Heating contractors in Bronx30
- Heating contractors in Brooklyn30
- Heating contractors in Cincinnati30
- Heating contractors in Memphis30
- Heating contractors in Philadelphia30
- Heating contractors in Spring30
- Heating contractors in Lancaster29
- Heating contractors in Oklahoma City29
- Heating contractors in Auburn28
- Heating contractors in Marietta28
- Heating contractors in Pittsburgh28
- Heating contractors in Birmingham27
- Heating contractors in Dayton27
- Heating contractors in Gainesville27
- Heating contractors in Glendale27
- Heating contractors in Omaha27
- Heating contractors in Seattle27
- Heating contractors in Vancouver26
- Heating contractors in Virginia Beach26
- Heating contractors in West Palm Beach26
- Heating contractors in Baltimore25
- Heating contractors in Burlington25
- Heating contractors in Clearwater25
- Heating contractors in Englewood25
- Heating contractors in Knoxville25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names heating contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many heating contractors are there based in the United States?
RevenueBase identified 14,556 heating contractors headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Johnstone Supply, headquartered in Portland, tops this list with the largest team on record.
Which city has the most heating contractors?
Houston leads with 172 headquartered companies, followed by New York (159) and San Antonio (98).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 35,906 verified decision-maker contacts tracked across these 14,556 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
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Heating contractors by geography
- Heating contractors based in Brampton, Canada
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- Heating contractors based in Edmonton, Canada
- Heating contractors based in Mississauga, Canada
- Heating contractors based in Montreal, Canada
- Heating contractors based in Ottawa, Canada
- Heating contractors based in Surrey, Canada
- Heating contractors based in Toronto, Canada
- Heating contractors based in Vaughan, Canada
- Heating contractors based in Winnipeg, Canada
- Heating contractors based in Glasgow, United Kingdom
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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 Smart Search, 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.
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