Company lists · Data refreshed September 2026
Top 25 Automotive emissions reduction consultants based in the United States
RevenueBase identified 155 company matches for automotive emissions reduction consultants associated with the United States as of September 2026 and tracks 1,035 professional contacts across them, including 294 with verified work emails. Austin is the largest hub.
This list covers company matches for automotive emissions reduction 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 September 30, 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.
The 25 largest automotive emissions reduction consultants based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 199 contacts → | ||||
Exact match “Cataler North America, a Toyota Motor Corporation affiliate, is a leading manufacturer of automotive catalysts that enhance the quality of the environment by filtering exhaust…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 2 | 70 contacts → | ||||
Exact match “TRANSTEX est un chef de file des technologies propres dans le secteur des transports, qui conçoit des solutions de réduction des émissions pour améliorer l'efficacité des flottes…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 3 | 51 contacts → | ||||
Exact match “Gladstein, Neandross & Associates (GNA) is the leading North American consulting firm specializing in market development for low- and zero-emission transportation technologies…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 4 | 38 contacts → | ||||
Exact match “Since 1984, we have been designing, implementing, operating and servicing various types of motor vehicle emissions and technical/safety inspection programs.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 5 | 36 contacts → | ||||
Exact match “Formed in 2010 and headquartered in Houston, Texas, Encino Environmental Services, LLC is an emissions testing, monitoring, and compliance support firm serving critical…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 6 | 22 contacts → | ||||
Exact match “Fuel economy experts offering testing and consulting services” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 7 | 20 contacts → | ||||
Exact match “Mercury is a dedicated fleet management consulting firm offering a unique combination of hands-on fleet experience, fleet management business process evaluation methods, and…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 8 | 19 contacts → | ||||
Exact match “Sphere 3 Environmental provides environmental compliance services to aide our clients in cost-effective solutions to today's environmental regulations.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 9 | 19 contacts → | ||||
Exact match “Health & Safety in the Fire & EMS Industry and Emission solutions for all other Industries.See our websites for additional & Ward Diesel & Ward Clean Air Products History: Ward…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 10 | 16 contacts → | ||||
Exact match “We offer technical solutions to help solve today’s challenges in the global market place in the fight against pollution from internal combustion engines (ICE).” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 11 | 16 contacts → | ||||
Exact match “Global Pioneer and Leader in DPF & DOC Cleaning, Restoration, & Emissions Systems” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 12 | 16 contacts → | ||||
Exact match “A Colorado-based company founded in 2005, Ruby Canyon Engineering, Inc.(RCE) is dedicated to the accurate greenhouse gas (GHG) emissions accounting of corporate inventories…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 13 | 15 contacts → | ||||
Exact match “We are emissions compliance professionals who specialize in communications-driven emissions testing to help our partners in the oil & gas industries achieve their compliance goals.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 14 | 13 contacts → | ||||
Exact match “ECO, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 15 | 11 contacts → | ||||
Exact match “AERINOX is an environmental engineering company supplying reliable and cost-competitive emissions solutions to the North American stationary engine markets.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 16 | 10 contacts → | ||||
Exact match “Life Cycle Associates is an independent business and environmental consulting company with over sixty years cumulative experience in alternative fuels, fuel production processes…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 17 | 9 contacts → | ||||
Exact match “Today FleetServ provides a full range of diesel emissions solutions, eliminating all of the stress and headache often associated with diesel emissions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 18 | 8 contacts → | ||||
Exact match “44 Energy is an international consulting firm that provides world-class services for the sustainable transportation and clean energy markets.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “Our services include engine testing & retrofit design; emission reduction strategies; R&D, permanent & temporary cylinder pressure, ion sense & emissions monitoring and analysis…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 20 | 7 contacts → | ||||
Exact match “The Astor Company opened its doors almost 20 years ago as a cardboard recycling company, beginning a journey of continuous adaptation and evolution which today finds a world-class…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 21 | 7 contacts → | ||||
Exact match “ESA Consulting brings together solution-driven technical experts to design and implement environmental and regulatory compliance strategies tailored to the needs of the individual…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “MineTerra is an industry leading emissions control solutions provider.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “Viridis Consulting (Viridis) is a clean energy consultancy certified as a Minority Woman-Owned (MWBE) and Small Business (SBE) firm based in Los Angeles.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “Global Efficiency Intelligence, LLC.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 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 “automotive emissions reduction 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 155 automotive emissions reduction consultants based in the United States
See the full list, filter by size, metro and specialty, and access 294 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Automotive emissions reduction consultants based in the United States at a glance
As of Sep 30, 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 155 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 “automotive emissions reduction 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 294 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 September 30, 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 “automotive emissions reduction consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many automotive emissions reduction consultants are there based in the United States?
RevenueBase identified 155 company matches for automotive emissions reduction consultants associated with the United States as of September 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?
Cataler North America tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most automotive emissions reduction consultants?
Austin leads with 5 company records, followed by Detroit (3) and Houston (3).
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 294 professional contacts with verified work emails tracked across these 155 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 September 30, 2026.
Ready to reach these companies? Verified emails and direct dials for all 155 automotive emissions reduction consultants based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Automotive emissions reduction consultants by geography
- Automotive emissions reduction consultants based in Canada
- Automotive emissions reduction consultants based in France
- Automotive emissions reduction consultants based in Germany
- Automotive emissions reduction consultants based in the Netherlands
- Automotive emissions reduction consultants based in the United Kingdom
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Automotive emissions reduction consultants based in Canada
- Automotive emissions reduction consultants based in France
- Automotive emissions reduction consultants based in Germany
- Automotive emissions reduction consultants based in the Netherlands
- Automotive emissions reduction consultants based in the United Kingdom
- AI companies based in the United States
Company intelligence · public preview
Top 25 automotive emissions reduction consultants based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 155 matching company records for automotive emissions reduction consultants based in the United States, with 1,035 tracked contacts and 294 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 automotive emissions reduction consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Cataler North Americacataler.com HQ: Lincolnton, NC, United StatesReported employees: 201-500 | Lincolnton, NC, United States | 201-500 | Exact match | 199 contacts → |
“Cataler North America, a Toyota Motor Corporation affiliate, is a leading manufacturer of automotive catalysts that enhance the quality of the environment by filtering exhaust…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Transtex LLCtranstex-llc.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 70 contacts → |
“TRANSTEX est un chef de file des technologies propres dans le secteur des transports, qui conçoit des solutions de réduction des émissions pour améliorer l'efficacité des flottes…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  GNA A TRC Companytrccompanies.comHQ: Santa Monica, CA, United StatesReported employees: 51-200 | Santa Monica, CA, United States | 51-200 | Exact match | 51 contacts → |
“Gladstein, Neandross & Associates (GNA) is the leading North American consulting firm specializing in market development for low- and zero-emission transportation technologies…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Worldwide Environmentalwep-inc.comHQ: Brea, CA, United StatesReported employees: 51-200 | Brea, CA, United States | 51-200 | Exact match | 38 contacts → |
“Since 1984, we have been designing, implementing, operating and servicing various types of motor vehicle emissions and technical/safety inspection programs.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Encino Environmental Services, LLCencinoenviron.comHQ: Katy, TX, United StatesReported employees: 51-200 | Katy, TX, United States | 51-200 | Exact match | 36 contacts → |
“Formed in 2010 and headquartered in Houston, Texas, Encino Environmental Services, LLC is an emissions testing, monitoring, and compliance support firm serving critical…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Mesilla Valley Transportation Solutions Mvtsm-v-t-s.com HQ: Las Cruces, NM, United StatesReported employees: 1-10 | Las Cruces, NM, United States | 1-10 | Exact match | 22 contacts → |
“Fuel economy experts offering testing and consulting services” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Mercury Associates, INCmercury-assoc.com HQ: Charelston, SC, United StatesReported employees: 51-200 | Charelston, SC, United States | 51-200 | Exact match | 20 contacts → |
“Mercury is a dedicated fleet management consulting firm offering a unique combination of hands-on fleet experience, fleet management business process evaluation methods, and…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sphere 3 Environmental, LLCsphere3env.com HQ: Longview, TX, United StatesReported employees: 11-50 | Longview, TX, United States | 11-50 | Exact match | 19 contacts → |
“Sphere 3 Environmental provides environmental compliance services to aide our clients in cost-effective solutions to today's environmental regulations.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Beecher Emission Solution Technologies Best -Ward Diesel Filter Systems & Ward Clean AIR Productswarddiesel.com HQ: Horseheads, NY, United StatesReported employees: 51-200 | Horseheads, NY, United States | 51-200 | Exact match | 19 contacts → |
“Health & Safety in the Fire & EMS Industry and Emission solutions for all other Industries.See our websites for additional & Ward Diesel & Ward Clean Air Products History: Ward…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Prime ONE Contractingpoc-aip.com HQ: Kentwood, MI, United StatesReported employees: 11-50 | Kentwood, MI, United States | 11-50 | Exact match | 16 contacts → |
“We offer technical solutions to help solve today’s challenges in the global market place in the fight against pollution from internal combustion engines (ICE).” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ceramex North America LLCceramexnorthamerica.com HQ: Springfield, MO, United StatesReported employees: 11-50 | Springfield, MO, United States | 11-50 | Exact match | 16 contacts → |
“Global Pioneer and Leader in DPF & DOC Cleaning, Restoration, & Emissions Systems” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ruby Canyon Environmentalrubycanyonenv.com HQ: Grand Junction, CO, United StatesReported employees: 11-50 | Grand Junction, CO, United States | 11-50 | Exact match | 16 contacts → |
“A Colorado-based company founded in 2005, Ruby Canyon Engineering, Inc.(RCE) is dedicated to the accurate greenhouse gas (GHG) emissions accounting of corporate inventories…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Slipstreamslipstreamtesting.com HQ: Sheridan, WY, United StatesReported employees: 11-50 | Sheridan, WY, United States | 11-50 | Exact match | 15 contacts → |
“We are emissions compliance professionals who specialize in communications-driven emissions testing to help our partners in the oil & gas industries achieve their compliance goals.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  ECO Engine Certification Organizationenginecert.comHQ: Roseville, CA, United StatesReported employees: 1-10 | Roseville, CA, United States | 1-10 | Exact match | 13 contacts → |
“ECO, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Aerinox INCaerinox-inc.comHQ: Eaton, CO, United StatesReported employees: 11-50 | Eaton, CO, United States | 11-50 | Exact match | 11 contacts → |
“AERINOX is an environmental engineering company supplying reliable and cost-competitive emissions solutions to the North American stationary engine markets.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Life Cycle Associateslifecycleassociates.com HQ: Portola Valley, United StatesReported employees: 11-50 | Portola Valley, United States | 11-50 | Exact match | 10 contacts → |
“Life Cycle Associates is an independent business and environmental consulting company with over sixty years cumulative experience in alternative fuels, fuel production processes…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Fleetservfleetserv.com HQ: San Bernardino, CA, United StatesReported employees: 11-50 | San Bernardino, CA, United States | 11-50 | Exact match | 9 contacts → |
“Today FleetServ provides a full range of diesel emissions solutions, eliminating all of the stress and headache often associated with diesel emissions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  44 Energy44energy.comHQ: Oakland, CA, United StatesReported employees: 11-50 | Oakland, CA, United States | 11-50 | Exact match | 8 contacts → |
“44 Energy is an international consulting firm that provides world-class services for the sustainable transportation and clean energy markets.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: San Leandro, CA, United StatesReported employees: 11-50 | San Leandro, CA, United States | 11-50 | Exact match | 7 contacts → |
“Our services include engine testing & retrofit design; emission reduction strategies; R&D, permanent & temporary cylinder pressure, ion sense & emissions monitoring and analysis…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  The Astor Companyastorcompany.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 7 contacts → |
“The Astor Company opened its doors almost 20 years ago as a cardboard recycling company, beginning a journey of continuous adaptation and evolution which today finds a world-class…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | ESA Consulting, LLCwebesa.com HQ: Longview, TX, United StatesReported employees: 1-10 | Longview, TX, United States | 1-10 | Exact match | 7 contacts → |
“ESA Consulting brings together solution-driven technical experts to design and implement environmental and regulatory compliance strategies tailored to the needs of the individual…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mineterramineterra.com HQ: Reno, MI, United StatesReported employees: 1-10 | Reno, MI, United States | 1-10 | Exact match | 6 contacts → |
“MineTerra is an industry leading emissions control solutions provider.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Viridis Consulting LLCviridis-consulting.com HQ: Pasadena, CA, United StatesReported employees: 1-10 | Pasadena, CA, United States | 1-10 | Exact match | 5 contacts → |
“Viridis Consulting (Viridis) is a clean energy consultancy certified as a Minority Woman-Owned (MWBE) and Small Business (SBE) firm based in Los Angeles.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Global Efficiency Intelligenceglobalefficiencyintel.com HQ: St. Petersburg, FL, United StatesReported employees: 1-10 | St. Petersburg, FL, United States | 1-10 | Exact match | 5 contacts → |
“Global Efficiency Intelligence, LLC.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ecocira, INCecocira.com HQ: Santa Monica, CA, United StatesReported employees: 1-10 | Santa Monica, CA, United States | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 155 company matches
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Automotive emissions reduction consultants: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
154 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 155 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for automotive emissions reduction consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many automotive emissions reduction consultants did RevenueBase find based in the United States?
The saved snapshot records 155 matching company records, 1,035 tracked contacts and 294 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Automotive emissions reduction consultants by geography
- Automotive emissions reduction consultants based in Canada
- Automotive emissions reduction consultants based in France
- Automotive emissions reduction consultants based in Germany
- Automotive emissions reduction consultants based in the Netherlands
- Automotive emissions reduction consultants based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 automotive emissions reduction consultants based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/automotive-emissions-reduction-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- New lists
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Company intelligence · public preview
Top 25 automotive emissions reduction consultants based in the United States
RevenueBase records 155 matching company records for automotive emissions reduction consultants based in the United States, with 1,035 tracked contacts and 294 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 automotive emissions reduction consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Cataler North Americacataler.com HQ: Lincolnton, NC, United StatesReported employees: 201-500 | Lincolnton, NC, United States | 201-500 | Exact match | 199 contacts → |
“Cataler North America, a Toyota Motor Corporation affiliate, is a leading manufacturer of automotive catalysts that enhance the quality of the environment by filtering exhaust…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Transtex LLCtranstex-llc.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 70 contacts → |
“TRANSTEX est un chef de file des technologies propres dans le secteur des transports, qui conçoit des solutions de réduction des émissions pour améliorer l'efficacité des flottes…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | GNA A TRC Companytrccompanies.com HQ: Santa Monica, CA, United StatesReported employees: 51-200 | Santa Monica, CA, United States | 51-200 | Exact match | 51 contacts → |
“Gladstein, Neandross & Associates (GNA) is the leading North American consulting firm specializing in market development for low- and zero-emission transportation technologies…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Worldwide Environmentalwep-inc.com HQ: Brea, CA, United StatesReported employees: 51-200 | Brea, CA, United States | 51-200 | Exact match | 38 contacts → |
“Since 1984, we have been designing, implementing, operating and servicing various types of motor vehicle emissions and technical/safety inspection programs.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Encino Environmental Services, LLCencinoenviron.com HQ: Katy, TX, United StatesReported employees: 51-200 | Katy, TX, United States | 51-200 | Exact match | 36 contacts → |
“Formed in 2010 and headquartered in Houston, Texas, Encino Environmental Services, LLC is an emissions testing, monitoring, and compliance support firm serving critical…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Mesilla Valley Transportation Solutions Mvtsm-v-t-s.com HQ: Las Cruces, NM, United StatesReported employees: 1-10 | Las Cruces, NM, United States | 1-10 | Exact match | 22 contacts → |
“Fuel economy experts offering testing and consulting services” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Mercury Associates, INCmercury-assoc.com HQ: Charelston, SC, United StatesReported employees: 51-200 | Charelston, SC, United States | 51-200 | Exact match | 20 contacts → |
“Mercury is a dedicated fleet management consulting firm offering a unique combination of hands-on fleet experience, fleet management business process evaluation methods, and…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sphere 3 Environmental, LLCsphere3env.com HQ: Longview, TX, United StatesReported employees: 11-50 | Longview, TX, United States | 11-50 | Exact match | 19 contacts → |
“Sphere 3 Environmental provides environmental compliance services to aide our clients in cost-effective solutions to today's environmental regulations.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Beecher Emission Solution Technologies Best -Ward Diesel Filter Systems & Ward Clean AIR Productswarddiesel.com HQ: Horseheads, NY, United StatesReported employees: 51-200 | Horseheads, NY, United States | 51-200 | Exact match | 19 contacts → |
“Health & Safety in the Fire & EMS Industry and Emission solutions for all other Industries.See our websites for additional & Ward Diesel & Ward Clean Air Products History: Ward…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Prime ONE Contractingpoc-aip.com HQ: Kentwood, MI, United StatesReported employees: 11-50 | Kentwood, MI, United States | 11-50 | Exact match | 16 contacts → |
“We offer technical solutions to help solve today’s challenges in the global market place in the fight against pollution from internal combustion engines (ICE).” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ceramex North America LLCceramexnorthamerica.com HQ: Springfield, MO, United StatesReported employees: 11-50 | Springfield, MO, United States | 11-50 | Exact match | 16 contacts → |
“Global Pioneer and Leader in DPF & DOC Cleaning, Restoration, & Emissions Systems” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ruby Canyon Environmentalrubycanyonenv.com HQ: Grand Junction, CO, United StatesReported employees: 11-50 | Grand Junction, CO, United States | 11-50 | Exact match | 16 contacts → |
“A Colorado-based company founded in 2005, Ruby Canyon Engineering, Inc.(RCE) is dedicated to the accurate greenhouse gas (GHG) emissions accounting of corporate inventories…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Slipstreamslipstreamtesting.com HQ: Sheridan, WY, United StatesReported employees: 11-50 | Sheridan, WY, United States | 11-50 | Exact match | 15 contacts → |
“We are emissions compliance professionals who specialize in communications-driven emissions testing to help our partners in the oil & gas industries achieve their compliance goals.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ECO Engine Certification Organizationenginecert.com HQ: Roseville, CA, United StatesReported employees: 1-10 | Roseville, CA, United States | 1-10 | Exact match | 13 contacts → |
“ECO, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Aerinox INCaerinox-inc.com HQ: Eaton, CO, United StatesReported employees: 11-50 | Eaton, CO, United States | 11-50 | Exact match | 11 contacts → |
“AERINOX is an environmental engineering company supplying reliable and cost-competitive emissions solutions to the North American stationary engine markets.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Life Cycle Associateslifecycleassociates.com HQ: Portola Valley, United StatesReported employees: 11-50 | Portola Valley, United States | 11-50 | Exact match | 10 contacts → |
“Life Cycle Associates is an independent business and environmental consulting company with over sixty years cumulative experience in alternative fuels, fuel production processes…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Fleetservfleetserv.com HQ: San Bernardino, CA, United StatesReported employees: 11-50 | San Bernardino, CA, United States | 11-50 | Exact match | 9 contacts → |
“Today FleetServ provides a full range of diesel emissions solutions, eliminating all of the stress and headache often associated with diesel emissions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 44 Energy44energy.com HQ: Oakland, CA, United StatesReported employees: 11-50 | Oakland, CA, United States | 11-50 | Exact match | 8 contacts → |
“44 Energy is an international consulting firm that provides world-class services for the sustainable transportation and clean energy markets.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: San Leandro, CA, United StatesReported employees: 11-50 | San Leandro, CA, United States | 11-50 | Exact match | 7 contacts → |
“Our services include engine testing & retrofit design; emission reduction strategies; R&D, permanent & temporary cylinder pressure, ion sense & emissions monitoring and analysis…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | The Astor Companyastorcompany.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 7 contacts → |
“The Astor Company opened its doors almost 20 years ago as a cardboard recycling company, beginning a journey of continuous adaptation and evolution which today finds a world-class…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | ESA Consulting, LLCwebesa.com HQ: Longview, TX, United StatesReported employees: 1-10 | Longview, TX, United States | 1-10 | Exact match | 7 contacts → |
“ESA Consulting brings together solution-driven technical experts to design and implement environmental and regulatory compliance strategies tailored to the needs of the individual…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mineterramineterra.com HQ: Reno, MI, United StatesReported employees: 1-10 | Reno, MI, United States | 1-10 | Exact match | 6 contacts → |
“MineTerra is an industry leading emissions control solutions provider.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Viridis Consulting LLCviridis-consulting.com HQ: Pasadena, CA, United StatesReported employees: 1-10 | Pasadena, CA, United States | 1-10 | Exact match | 5 contacts → |
“Viridis Consulting (Viridis) is a clean energy consultancy certified as a Minority Woman-Owned (MWBE) and Small Business (SBE) firm based in Los Angeles.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Global Efficiency Intelligenceglobalefficiencyintel.com HQ: St. Petersburg, FL, United StatesReported employees: 1-10 | St. Petersburg, FL, United States | 1-10 | Exact match | 5 contacts → |
“Global Efficiency Intelligence, LLC.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ecocira, INCecocira.com HQ: Santa Monica, CA, United StatesReported employees: 1-10 | Santa Monica, CA, United States | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 155 company matches
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Automotive emissions reduction consultants: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
154 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 155 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for automotive emissions reduction consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many automotive emissions reduction consultants did RevenueBase find based in the United States?
The saved snapshot records 155 matching company records, 1,035 tracked contacts and 294 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 automotive emissions reduction consultants based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/automotive-emissions-reduction-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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