Company lists · Data refreshed September 2026

Top 25 Indoor air quality monitoring companies based in the United States

Name: Indoor air quality monitoring companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 786 companies tracked

RevenueBase identified 786 indoor air quality monitoring companies headquartered in the United States as of September 2026 and tracks 8,466 professional contacts across them, including 3,346 with verified work emails. Houston is the largest hub.

This list covers indoor air quality monitoring companies 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

786Companies

8,466Contacts tracked

3,346Verified emails

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The 25 largest indoor air quality monitoring companies based in the United States

Ranked by team size

Top 25 of 786 indoor air quality monitoring companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to indoor air quality monitoring companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	AAF International American AIR Filter	Partial evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	1,001-5,000	806 contacts →
	Partial evidence “AAF International clean air products and systems offer the most comprehensive clean air solutions available in the world.” Source: RevenueBase Database · checked Sep 20, 2026
2	Aprilaire	Strong evidence	Madison, WI, United StatesHQ checked Sep 20, 2026	501-1,000	474 contacts →
	Strong evidence “Headquartered in Madison, Wisconsin with production facilities in both Madison and Poynette, AprilAire has been providing a variety of Indoor Air Quality solutions and technology…” Source: RevenueBase Database · checked Sep 20, 2026
3	Mesa Laboratories, INC	Partial evidence	Lakewood, CO, United StatesHQ checked Sep 20, 2026	501-1,000	323 contacts →
	Partial evidence “Mesa Labs helps you monitor and maintain higher standards in any environment – from the air we breathe to the critical moments of life-saving care.” Source: RevenueBase Database · checked Sep 20, 2026
4	Picarro	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 20, 2026	201-500	297 contacts →
	Indirect evidence “Reducing emissions, detecting leaks, mitigating risk, optimizing operations, ensuring compliance and advancing research are some of the challenges facing our clients.” Source: RevenueBase Database · checked Sep 20, 2026
5	LWS Lighthouse Worldwide Solutions	Indirect evidence	White City, OR, United StatesHQ checked Sep 20, 2026	201-500	175 contacts →
	Indirect evidence “When you need to monitor your cleanroom for contamination, Lighthouse is your premier solution provider.” Source: RevenueBase Database · checked Sep 20, 2026
6	Green Home Solutions	Strong evidence	Spring Mills, PA, United StatesHQ checked Sep 20, 2026	11-50	127 contacts →
	Strong evidence “Green Home Solutions is proud to bring products and services for the quality indoor air you want for your home and family.” Source: RevenueBase Database · checked Sep 20, 2026
7	JOE W. FLY Co., INC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect evidence “Since 1967, Joe W.” Source: RevenueBase Database · checked Sep 20, 2026
8	Rensa Filtration	Partial evidence	Aurora, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	104 contacts →
	Partial evidence “At Rensa Filtration, our mission is to help people breathe cleaner air.” Source: RevenueBase Database · checked Sep 20, 2026
9	SKC INC	Indirect evidence	Eighty Four, PA, United StatesHQ checked Sep 20, 2026	51-200	95 contacts →
	Indirect evidence “SKC is a well-known and respected leader in industrial hygiene and occupational safety.” Source: RevenueBase Database · checked Sep 20, 2026
10	Protect Environmental	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	201-500	84 contacts →
	Indirect evidence “Protect Environmental is a national leader in the environmental consulting and construction industry, focusing on radon and chemical vapor intrusion management.” Source: RevenueBase Database · checked Sep 20, 2026
11	Koch Filter	Strong evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	201-500	82 contacts →
	Strong evidence “WHO WE ARE: Koch Filter is a leading manufacturer of indoor air filtration solutions that protect the quality of life for individuals while protecting processes and equipment in…” Source: RevenueBase Database · checked Sep 20, 2026
12	A.J. Perri	Indirect evidence	Tinton Falls, NJ, United StatesHQ checked Sep 20, 2026	201-500	80 contacts →
	Indirect evidence “A.J.” Source: RevenueBase Database · checked Sep 20, 2026
13	Dynamic AIR Quality Solutions	Strong evidence	Princeton, NJ, United StatesHQ checked Sep 20, 2026	51-200	74 contacts →
	Strong evidence “At the intersection of IAQ, energy, and maintenance, Dynamic Air Quality Solutions provides sustainable air cleaning solutions for new construction and existing buildings that…” Source: RevenueBase Database · checked Sep 20, 2026
14	Molekule	Indirect evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 20, 2026	51-200	74 contacts →
	Indirect evidence “You track your sleep.” Source: RevenueBase Database · checked Sep 20, 2026
15	Desert Aire LLC	Strong evidence	Germantown, WI, United StatesHQ checked Sep 20, 2026	51-200	73 contacts →
	Strong evidence “At Desert Aire we provide customers with indoor air quality solutions that help people live, work and play in healthy and productive environments by optimizing solutions through…” Source: RevenueBase Database · checked Sep 20, 2026
16	ALEN	Strong evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	51-200	73 contacts →
	Strong evidence “At Alen, we design premium air purifiers that help people take control of their indoor air quality.” Source: RevenueBase Database · checked Sep 20, 2026
17	MSA Bacharach	Partial evidence	New Kensington, PA, United StatesHQ checked Sep 20, 2026	201-500	69 contacts →
	Partial evidence “MSA Bacharach is a global leader in the design, manufacture, and service of combustion gas analysis and refrigeration leak detectors, and monitoring instrumentation.” Source: RevenueBase Database · checked Sep 20, 2026
18	AIR Hygiene International, INC	Strong evidence	Tulsa, United StatesHQ checked Sep 20, 2026	11-50	68 contacts →
	Strong evidence “AIR HYGIENE is known for providing professional services which include the following:* Providing superior, cost saving services to our clients!* High quality emission testing…” Source: RevenueBase Database · checked Sep 20, 2026
19	Spruce Environmental Technologies, INC	Strong evidence	Ward Hill, MA, United StatesHQ checked Sep 20, 2026	51-200	64 contacts →
	Strong evidence “Spruce was founded in 1989 with the purpose of making indoor air safer by removing a major health hazard: Radon.” Source: RevenueBase Database · checked Sep 20, 2026
20	Sensidyne, LP	Indirect evidence	St. Petersburg, FL, United StatesHQ checked Sep 20, 2026	51-200	63 contacts →
	Indirect evidence “Ensuring Health & Safety is Our Mission - We're All In.” Source: RevenueBase Database · checked Sep 20, 2026
21	Nevadanano	Partial evidence	Sparks, NV, United StatesHQ checked Sep 20, 2026	51-200	61 contacts →
	Partial evidence “NevadaNano provides safety and climate solutions for many of the world’s largest corporations, with innovative multi-gas sensing products and IIoT automated emissions monitoring…” Source: RevenueBase Database · checked Sep 20, 2026
22	Aclima, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	57 contacts →
	Partial evidence “Aclima is pioneering an entirely new way to diagnose the health of our air and track climate-changing pollution.” Source: RevenueBase Database · checked Sep 20, 2026
23	WTI	Indirect evidence	Clearwater, FL, United StatesHQ checked Sep 20, 2026	51-200	57 contacts →
	Indirect evidence “Is the health comfort and energy efficiency of facilities at risk?” Source: RevenueBase Database · checked Sep 20, 2026
24	Madison AIR	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	5,001-10,000	57 contacts →
	Partial evidence “At Madison Air, we see air differently.” Source: RevenueBase Database · checked Sep 20, 2026
25	Ebtron	Indirect evidence	Loris, SC, United StatesHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence “Globally, EBTRON provides industry-leading solutions for airflow measurement that offer accurate, repeatable, and long-term stability for years of reliable operation in the built…” Source: RevenueBase Database · checked Sep 20, 2026

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: indoor air quality monitoring companies. 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 indoor air quality monitoring companies.
Partial evidence: Its own public description names part of indoor air quality monitoring companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name indoor air quality monitoring companies. 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 786 indoor air quality monitoring companies based in the United States

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Indoor air quality monitoring companies based in the United States at a glance

As of Sep 20, 2026

39.5%Verified-email coverage

10.8Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

439

11-50

247

51-200

201-500

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 786 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 indoor air quality monitoring companies, 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 “indoor air quality monitoring companies”. 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 indoor air quality monitoring companies), 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 indoor air quality monitoring companies, 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, 3,346 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 20, 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.

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 indoor air quality monitoring companies, 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 indoor air quality monitoring companies are there based in the United States?

RevenueBase identified 786 indoor air quality monitoring companies 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?

AAF International American AIR Filter, headquartered in Louisville, tops this list with the largest team on record.

Which city has the most indoor air quality monitoring companies?

Houston leads with 13 headquartered companies, followed by Dallas (12) and Tampa (11).

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 3,346 verified decision-maker contacts tracked across these 786 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 20, 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 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.