Blue Book

AI Visibility Index · Cell report

Measured

AI Visibility Index: Air Compressors in California

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

  • 110 companies tracked
  • Last measured September 30, 2026
  • Next measurement October 30, 2026
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The headline numbers

Never named by AI

102 of 110

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.

  • 8 named at least once
  • 102 never named
Not sure whether you are one of them?Check your domain
Cell average
0.35of 15

Across all 110 tracked companies.

Top ten average
6.1of 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 Air Compressors companies in California, measured September 30, 2026
RankCompanyAI visibility
1
Associated Compressor & Equipment
20 employeesFresno, California
3 name variants
  • Associated Compressor Engineersmost common6
  • Associated Compressor & Equipment5
  • Associated Compressor Engineers, Inc.1

12 of 15 answers

2
California Compression
California
3 name variants
  • California Compression (Hitachi Air Center)most common6
  • California Compression4
  • California Compression, LLC1

11 of 15 answers

3
Cisco Air Systems
23 employeesSacramento, California

10 of 15 answers

4
American Compressor Company
19 employeesSanta Fe Springs, California
2 name variants
  • American Compressor Companymost common4
  • American Compressors & Parts1

5 of 15 answers

5
Kaeser Compressors, Inc.
8 employeesCypress, California

5 of 15 answers

6
Q Air‑California
California

5 of 15 answers

7
PCA Industrial, LLC
California

4 of 15 answers

8
Advanced Air & Vacuum
California

3 of 15 answers

9
CASEI
California
2 name variants
  • CASEImost common2
  • CASEI (California Air Systems & Equipment, Inc.)1

3 of 15 answers

10
CASEI – Compressed Air Systems Engineering, Inc.
California

3 of 15 answers

28 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.

CompanyStateMentions
CASCO USAPennsylvania2 of 15
Air Compressor Specialists (ACS)Iowa1 of 15
Atlas Copco Compressors USAPennsylvania1 of 15
Atlas Copco Compressors – Los Angeles Service CenterPennsylvania1 of 15
Atlas Copco – California (Los Angeles Service Center)Michigan1 of 15
OTC Industrial Technologies (Gardner Denver Distributor)North Carolina1 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. 1“Best air compressor companies in California”
  2. 2“Who supplies oil-free rotary screw air compressors in California”
  3. 3“I need a California air compressor partner for a continuous-duty manufacturing line installation, who should I talk to”
  4. 4“Top air compressor suppliers in California for industrial maintenance buyers”
  5. 5“Which California air compressor specialists can handle turnkey design, installation, and service of compressed air systems”
  6. 6“List 20 air compressor 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.

  • atlascopco.com
    7 companies
  • ingersollrand.com
    6 companies
  • californiacompression.com
    3 companies
  • associatedcompressor.com
    3 companies
  • casei.com
    3 companies
  • americancompressor.com
    2 companies
  • reddit.comDirectory
    2 companies
  • airandlube.com
    2 companies
  • danddcompressor.com
    2 companies
  • sullairinfo.com
    2 companies
  • advancedairvac.com
    1 company
  • ciscoair.com
    1 company

55 sources were cited across this cell's answers from 34 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 7th of 8 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 10%.

California (this report)Other measured statesCategory average (10%)

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More published reports in California