AI Visibility Index: Industrial Filters in California

When a buyer asks an AI assistant for a industrial filters supplier in California, these are the companies that get named. This is what we found when the cell was last measured.

366 companies tracked
Last measured September 30, 2026
Next measurement October 30, 2026

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The headline numbers

Never named by AI

349 of 366

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

17 named at least once
349 never named

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Cell average: 0.09of 15
Across all 366 tracked companies.
Top ten average: 3.8of 15
The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in California

These are the companies AI assistants named most often when California buyers went looking for a supplier in this category.

Top 10 most AI-visible Industrial Filters companies in California, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Pure Process Filtration, Inc 8 employeesGarden Grove, California 2 name variants Pure Process Filtration, Inc.most common4 Pure Process Filtration1	Garden Grove, California	5 of 15 answers
2	FTG, Inc. California	California	5 of 15 answers
3	Klarzon California	California	5 of 15 answers
4	SoCal Filters & Service California	California	5 of 15 answers
5	Air Now Supply Incorporated 5 employeesHuntington Beach, California	Huntington Beach, California	4 of 15 answers
6	CLEAR Solutions, Inc. California	California	4 of 15 answers
7	Industrial Filtration Inc 12 employeesLong Beach, California	Long Beach, California	3 of 15 answers
8	Wagner Process Equipment California	California	3 of 15 answers
9	Advanced Filtration Concepts 9 employeesNorwalk, California	Norwalk, California	2 of 15 answers
10	Gusmer Enterprises, Inc. 75 employeesFresno, California 2 name variants Gusmer Enterprises – Fresno Facilitymost common1 Gusmer Enterprises – Fresno Plant1	Fresno, California	2 of 15 answers

35 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not California. They belong to that state's ranking, not this one.

Company	State	Mentions
Air Filter Supply	Indiana	2 of 15
Hydrodex	Illinois	2 of 15
Rowe Equipment	Texas	2 of 15
Air Cleaning Technology	Texas	1 of 15
Filtra Systems	Michigan	1 of 15
Oneida Air Systems	New York	1 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

1“Best suppliers of industrial filters in California”
2“Who supplies high-efficiency pleated HEPA filter cartridges in California”
3“I need a California industrial filtration partner for a continuous-duty chemical processing line, who should I talk to”
4“Top industrial filters suppliers in California for plant maintenance and reliability buyers”
5“Which California industrial filter manufacturers can handle custom housings rated for high-pressure corrosive media”
6“List 20 industrial filters companies in California with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

en.wikipedia.orgDirectory
4 companies
everfilt.com
2 companies
pureprocessfiltration.com
2 companies
socalfiltersinc.com
2 companies
airfiltersupply.com
2 companies
macraesbluebook.comDirectory
2 companies
micropure.com
2 companies
airnowsupply.com
1 company
3etech.com
1 company
aircleaningtechnology.com
1 company
ape-incorp.com
1 company
apexfiltrationservices.com
1 company

61 sources were cited across this cell's answers from 55 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

California in context

California ranks 21st of 21 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 12%.

California (this report)Other measured statesCategory average (12%)

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