Company lists · Data refreshed November 2026

Top 25 Indoor environmental quality consultants worldwide

Name: Indoor environmental quality consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,736 companies tracked

RevenueBase identified 5,736 company matches for indoor environmental quality consultants worldwide as of November 2026 and tracks 52,527 professional contacts across them, including 17,066 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for indoor environmental quality consultants worldwide, 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. Country and city lists for indoor environmental quality consultants follow the table.

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

5,736Companies

52,527Contacts tracked

17,066Verified emails

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The 25 largest indoor environmental quality consultants worldwide

Ranked by team size

Top 25 of 5,736 company matches for indoor environmental quality consultants worldwide, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Nov 6, 2026	n/a	1,192 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	IEA	Exact match	Brooklyn Park, MN, United StatesHQ recorded Nov 6, 2026	n/a	1,013 contacts →
	Exact match “The Institute for Environmental Assessment, Inc.(IEA) is small business committed to providing trusted environmental safety consulting services for private and public…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	ATC Group Services LLC	Exact match	Lafayette, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	876 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Pinchin In Canada	Exact match	Mississauga, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	693 contacts →
	Exact match “Pinchin Ltd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Antea Group USA	Exact match	St. Paul, MD, United StatesHQ recorded Nov 6, 2026	1,001-5,000	649 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Trihydro Corporation	Exact match	Laramie, MT, United StatesHQ recorded Nov 6, 2026	501-1,000	583 contacts →
	Exact match “Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Groupe Acceo BET Energie, Ascenseur, Environnement, AMO & MOE Spécialisées	Exact match	La Ciotat, FranceHQ recorded Nov 6, 2026	501-1,000	520 contacts →
	Exact match “ACCEO est un bureau d’études en bâtiment indépendant fondé en 2003 et spécialisé dans des domaines à forte technicité : Ascenseurs, Efficacité énergétique, Environnement, AMO et…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Commtech Asia	Exact match	Tokyo, Hong KongHQ recorded Nov 6, 2026	201-500	398 contacts →
	Exact match “Commtech Asia is a market-leading, independent building commissioning consultant.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Glumac	Exact match	San Francisco, NV, United StatesHQ recorded Nov 6, 2026	201-500	387 contacts →
	Exact match “Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Nov 6, 2026	201-500	379 contacts →
	Exact match “P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	ADX Groupe	Exact match	Château-gontier, FranceHQ recorded Nov 6, 2026	201-500	370 contacts →
	Exact match “ADX Groupe, votre bureau d'études de l'existant - Réalisation de diagnostics immobiliers obligatoires lors de la transaction ou location des biens- Recherche d’amiante dans tous…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Avant Garde Cleanroom & Engg. Solutions Pvt. LTD	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	501-1,000	341 contacts →
	Exact match “Designing and building clean indoor climates for critical manufacturing industries like Pharmaceutical, Food, Automotive, Electronics, and others, ACES has innovated its way to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	CTE	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	51-200	322 contacts →
	Exact match “CTE is a consulting company, which has 28 years of experience in the Construction Industry, offering clients consultancy across a wide range of service nable Projects and Green…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Atelier TEN	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	313 contacts →
	Exact match “As environmental design consultants, building services engineers and lighting designers, we are committed to high performance and sustainable design within the built environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Colt International	Exact match	Petersfield, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	307 contacts →
	Exact match “Since 1931 we have been harnessing the natural elements to provide healthy, comfortable and safe working and living conditions in buildings.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Igienair	Exact match	Achères, FranceHQ recorded Nov 6, 2026	501-1,000	240 contacts →
	Exact match “IGIENAIR : Spécialiste dans la maitrise et la surveillance de la Qualité de l'Air Intérieur (QAI)!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Dansk Miljørådgivning A S	Exact match	Silkeborg, DenmarkHQ recorded Nov 6, 2026	201-500	240 contacts →
	Exact match “Dansk Miljørådgivning A/S (DMR) er et rådgivende ingeniørfirma, der yder rådgivning indenfor bl.a:* forureningsundersøgelser og udarbejdelse af risikovurderinger.* oprensning af…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Serviparamo S.A.S	Exact match	Barranquilla, ColombiaHQ recorded Nov 6, 2026	201-500	218 contacts →
	Exact match “Somos una empresa líder en el sector del aire acondicionado, ventilación mecánica, automatización y control, mantenimiento, retrofit, asesoría y soluciones para grantizar calidad…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Hillmann Consulting, LLC	Exact match	Union, OR, United StatesHQ recorded Nov 6, 2026	201-500	216 contacts →
	Exact match “Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Eurofred España	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	501-1,000	201 contacts →
	Exact match “Eurofred, el partner idóneo de soluciones de climatización doméstica, comercial, industrial, y calidad de aire interior.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	ES	Exact match	Giza, EgyptHQ recorded Nov 6, 2026	n/a	188 contacts →
	Exact match “Engineering Solutions provides LEED, EDGE, WELL, Mostadam & Sustainable Buildings Consulting and Energy Efficiency Solutions for residential, commercial, administrative and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Forensic Analytical Consulting Services, INC	Exact match	Hayward, CA, United StatesHQ recorded Nov 6, 2026	51-200	175 contacts →
	Exact match “With a staff of over 150 employees in the San Francisco, Sacramento, Los Angeles, San Diego, Modesto, Bakersfield, Fresno, Portland, Chicago, and Grand Rapids offices, Forensic…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Environmental Health & Engineering	Exact match	Newton, MA, United StatesHQ recorded Nov 6, 2026	51-200	173 contacts →
	Exact match “EH & E delivers integrated environmental, engineering, and health and safety solutions that help businesses and institutions safeguard their assets, improve operations and boost…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Lead Consultancy And Engineering Services India PVT LTD	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	51-200	172 contacts →
	Exact match “LEAD Consultancy & Engineering Services (India) Private Limited (LCES) has been started by a team of qualified professionals with vast experience and expertise in the areas of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Mostardi Platt	Exact match	Elmhurst, IL, United StatesHQ recorded Nov 6, 2026	51-200	165 contacts →
	Exact match “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Recorded in the RevenueBase company graph · Nov 6, 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 “indoor environmental quality 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 5,736 indoor environmental quality consultants worldwide

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Indoor environmental quality consultants worldwide at a glance

As of Nov 6, 2026

32.5%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,625

11-50

1,632

51-200

334

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for indoor environmental quality consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “indoor environmental quality 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. 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 17,066 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.

Indoor environmental quality consultants by location

29 lists · largest first

Every Indoor environmental quality consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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

How many indoor environmental quality consultants are there worldwide?

RevenueBase identified 5,736 company matches for indoor environmental quality consultants worldwide 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?

DGE Danmark tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most indoor environmental quality consultants?

The United States leads with 1,635 companies, followed by France (447) and Brazil (352). Every indoor environmental quality consultants list by country and city is linked on this page.

Which city has the most indoor environmental quality consultants?

Sao Paulo leads with 50 company records, followed by London (37) and Paris (36).

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 17,066 professional contacts with verified work emails tracked across these 5,736 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.