Company lists · Data refreshed October 2026

Top 25 Building systems consultants based in Houston, United States

Name: Building systems consultants based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 130 companies tracked

RevenueBase identified 130 company matches for building systems consultants associated with Houston, United States as of October 2026 and tracks 4,583 professional contacts across them, including 2,046 with verified work emails. Across the United States, New York is the largest hub for this category (193 companies); Houston follows with 130.

This list covers company matches for building systems consultants associated with Houston, 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 9, 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 9, 2026 How this list was built

130Companies

4,583Contacts tracked

2,046Verified emails

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The 25 largest building systems consultants based in Houston, United States

Ranked by team size

Top 25 of 130 company matches for building systems consultants based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	PGAL	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	330 contacts →
	Exact match “Founded in 1946, PGAL is a design firm specializing in architecture, engineering, interiors, and planning for a diverse portfolio of public and private sector clients.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	DBR	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	235 contacts →
	Exact match “Founded in 1972, DBR has evolved into the premier MEP engineering firm in Texas, providing mechanical, electrical, and plumbing engineering services, as well as building…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	WAY Engineering, LTD	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	501-1,000	177 contacts →
	Exact match “Way Engineering's quest for building excellence began in 1918 when a modest, but dedicated refrigeration business opened its doors in Houston, Texas.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Shah Smith & Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	138 contacts →
	Exact match “Shah Smith & Associates, Inc.(SSA) is a 120+ employee Mechanical, Electrical, and Plumbing (MEP) consulting engineering firm with offices in Houston, Austin & Dallas.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Letsos Company	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	126 contacts →
	Exact match “In 1953, James N.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Dac, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	123 contacts →
	Exact match “Since 1993, DAC has been committed to delivering exceptional customer experience, effective project execution, and value-oriented services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Soap Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	108 contacts →
	Exact match “We have earned a reputation as a global leader in Design/Build & Systems Integration for more than 30 years.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	APS Building Services	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	91 contacts →
	Exact match “APS is dedicated to building partnerships that enhance the comfort and productivity of our clients and their teams in the workplace.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Gray Mechanical Contractors, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	89 contacts →
	Exact match “Gray Mechanical Contractors is a licensed HVAC and Plumbing contractor providing construction services for General Contractors and building owners throughout Texas.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Raven Mechanical, LP	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	75 contacts →
	Exact match “Raven Mechanical, founded 1979, is a full service mechanical contractor specializing in Plumbing and HVAC service and construction.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Humphrey Company, LTD	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	501-1,000	73 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Dally Associates	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	62 contacts →
	Exact match “Founded in 1993, Dally + Associates, Inc.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Cougar USA	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	53 contacts →
	Exact match “Cougar USA \| Water Control Solutions for High Performance Buildings.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Har-Con Mechanical	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	50 contacts →
	Exact match “Founded in 1955, HAR-CON is a full service mechanical contractor well versed in Plumbing and HVAC.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Energy Architecture, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	50 contacts →
	Exact match “Energy Architecture is a specialized architecture firm based in Houston, serving clients at the forefront of innovation, research, and discovery.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	MEP Green Design & Build, Pllc	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	48 contacts →
	Exact match “MEP Green Design & Build, PLLC,(MEPG) is a full-service engineering firm made up of a dedicated team of professionals offering expertise in Mechanical, Electrical, Plumbing and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Convergentz	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	47 contacts →
	Exact match “As a technology leader and master systems integrator, Convergentz integrates IT and traditional building system functions to improve Building Performance, Environmental Comfort…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	I. A. Naman Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	46 contacts →
	Exact match “Since 1947, I.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	WAY Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	46 contacts →
	Exact match “Way Companies is a full-service commercial and industrial HVACR contractor delivering mechanical design-build, preventative maintenance, emergency service, retrofits, and building…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	RPT Alliance LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	43 contacts →
	Exact match “As of December 8, 2025, RTP Alliance has been acquired by by Bowman.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	CIVE	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	43 contacts →
	Exact match “CIVE is a Houston-based, fully integrated design-build firm delivering architecture, engineering, and construction under one roof.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	40 contacts →
	Exact match “As a leading HVAC retrofit, design, build, and services firm based in Houston, Comfort Systems USA - South Central specializes in installing, maintaining, and upgrading mechanical…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Pinnacle Structural Engineers	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	35 contacts →
	Exact match “Pinnacle is a structural engineering consulting firm providing services on a wide variety of project types, including: commercial, healthcare, workplace, institutional and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Infinity Systems, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	34 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 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 “building systems consultants”. 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 130 building systems consultants based in Houston, United States

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Building systems consultants based in Houston, United States at a glance

As of Oct 9, 2026

44.6%Verified-email coverage

35.3Average contacts per company

11-50Median size (employees)

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 130 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 Houston, United States whose business descriptions match “building systems 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 2,046 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 9, 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.

Building systems consultants by metro in the United States

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

How many building systems consultants are there based in Houston, United States?

RevenueBase identified 130 company matches for building systems consultants associated with Houston, 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?

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

Which city in the United States has the most building systems consultants?

New York leads the United States with 193 company records, followed by Houston (130) and Miami (59).

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 2,046 professional contacts with verified work emails tracked across these 130 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 9, 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.