Company lists · Data refreshed November 2026

Top 25 Heating system design consultants based in the United States

RevenueBase identified 1,944 company matches for heating system design consultants associated with the United States as of November 2026 and tracks 32,396 professional contacts across them, including 12,980 with verified work emails. New York is the largest hub.

This list covers company matches for heating system design consultants 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 November 6, 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 Nov 6, 2026 How this list was built
1,944Companies
32,396Contacts tracked
12,980Verified emails
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The 25 largest heating system design consultants based in the United States

Ranked by team size
Top 25 of 1,944 company matches for heating system design consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAtlanta, NC, United StatesHQ recorded Nov 6, 20261,001-5,0001,143 contacts →

Exact match

“McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLouisville, TN, United StatesHQ recorded Nov 6, 2026501-1,0001,049 contacts →

Exact match

“CMTA is part of Legence, a Nasdaq Listed company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchGreensboro, TN, United StatesHQ recorded Nov 6, 20261,001-5,000469 contacts →

Exact match

“Since 1947, Hoffman & Hoffman, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLebanon, OH, United StatesHQ recorded Nov 6, 2026n/a461 contacts →

Exact match

“PE-Services provides engineering for your success.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchTonawanda, NY, United StatesHQ recorded Nov 6, 2026501-1,000420 contacts →

Exact match

“We are powered by the best people in the industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 2026201-500364 contacts →

Exact match

“Whether building quality work environments, valuable relationships or community ties, Air Systems never cuts corners.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 2026201-500350 contacts →

Exact match

“United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWestminster, CO, United StatesHQ recorded Nov 6, 2026501-1,000349 contacts →

Exact match

“Looking for a new opportunity with a growing organization that shares your values?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBurr Ridge, NC, United StatesHQ recorded Nov 6, 2026501-1,000299 contacts →

Exact match

“Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchTukwila, AK, United StatesHQ recorded Nov 6, 2026201-500250 contacts →

Exact match

“As one of the largest full service mechanical contractors headquartered in the Pacific Northwest, Holaday Parks has grown well beyond Seattle.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 2026201-500218 contacts →

Exact match

“Since 1977, Critchfield Mechanical, Inc.(CMI) has been one of the finest mechanical contractors in California, specializing in the design, fabrication and installation of heating…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDe Pere, WI, United StatesHQ recorded Nov 6, 2026501-1,000214 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHayward, CA, United StatesHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“R.F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMarietta, GA, United StatesHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“MAXAIR Mechanical, founded in 1988, is a people first company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 6, 2026201-500208 contacts →

Exact match

“Haynes Mechanical Systems has been keeping commercial buildings running strong since 1968.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSmyrna, SC, United StatesHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“Backed by 80 years of experience, the more than 300 associates at EMCOR Services Aircond design and deliver comprehensive, timely, and cost effective HVAC and building system…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPulaski, NY, United StatesHQ recorded Nov 6, 2026501-1,000177 contacts →

Exact match

“Fulton specializes in custom engineered industrial and commercial heating systems featuring steam boilers, hot water and hydronic boilers, thermal fluid heaters, and a full range…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBennettsville, SC, United StatesHQ recorded Nov 6, 2026201-500169 contacts →

Exact match

“Marley Engineered Products® draws upon a long history of providing reliable comfort heating and ventilation solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNorfolk, VA, United StatesHQ recorded Nov 6, 2026201-500166 contacts →

Exact match

“Hobbs & Associates is a leading independent HVAC provider serving Virginia, Washington DC, Maryland, and Tennessee, with partners across the Southeast.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 202651-200161 contacts →

Exact match

“Since its establishment in 1948, Mechanical Contractors has been serving Charlotte, Raleigh and surrounding areas with design, installation and service of mechanical systems -…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202610001+160 contacts →

Exact match

“We are a leading provider of engineering, consulting, installation and maintenance services for mission-critical systems in buildings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchFranklin, WI, United StatesHQ recorded Nov 6, 2026201-500146 contacts →

Exact match

“Lee is one of Southeastern Wisconsin’s largest and most experienced schedule based mechanical contractors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHarrisburg, PA, United StatesHQ recorded Nov 6, 20261,001-5,000145 contacts →

Exact match

“Since 1914, HB McClure has served homes and businesses in Central Pennsylvania by providing premier residential, commercial, and design/build mechanical services, including…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 2026201-500143 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,944 heating system design consultants based in the United States

See the full list, filter by size, metro and specialty, and access 12,980 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Heating system design consultants based in the United States at a glance

As of Nov 6, 2026
40.1%Verified-email coverage
16.7Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
819
11-50
752
51-200
280
201-500
53
501-1,000
13
1,001-5,000
4
5,001-10,000
2
10001+
2

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 1,944 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 “heating system design consultants” 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 12,980 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 November 6, 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.

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 “heating system design consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many heating system design consultants are there based in the United States?

RevenueBase identified 1,944 company matches for heating system design consultants associated with the United States as of November 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?

Mckenney's, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most heating system design consultants?

New York leads with 40 company records, followed by Houston (28) and Denver (14).

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 12,980 professional contacts with verified work emails tracked across these 1,944 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 November 6, 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.