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Cities checked so far/Hvac contractors in Chicago, Illinois

Who ChatGPT, Claude, Gemini and Perplexity name when someone asks for a hvac contractor in Chicago.

We typed 5 questions into 4 AI assistants between September 25, 2026 and October 1, 2026 and wrote down every business they named. 1 of the 134 Chicago hvac contractors we looked for were named at least once. The other 133 were not.

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Who gets named

82 businesses named across 20 answers, including the ones not on our list of 134. Each bar shows how many of those 20 answers named the business.

  1. 1Four Seasons Heatingfourseasonsheatingcooling.com14 of 20
  2. 2Deljo Heating & Coolingdeljoheating.com8 of 20
  3. 3All Temp Heating and Air Conditioningalltemp.com8 of 20
  4. 4Besco Airbescoair.net8 of 20
  5. 5King Heating, Cooling & Plumbingkingheating.com5 of 20
  6. 6Plumbing & Electricnamed by ChatGPT, Gemini and Perplexity5 of 20
  7. 7Browns Heating & Coolingnamed by ChatGPT, Claude and Gemini5 of 20
  8. 8Shavitz Heating and Air Conditioningnamed by ChatGPT, Claude and Gemini4 of 20
  9. 9ABC Plumbing, Sewer, Heating, Cooling and Electric4abc.com4 of 20
  10. 10Hero Airnamed by Claude and Perplexity4 of 20
Show the 15 others
  1. 11Porterhouse Heating & Coolingnamed by ChatGPT, Claude and Gemini3 of 20
  2. 12City & Suburban Heating & Coolingnamed by Claude3 of 20
  3. 13Eco Temp HVACecotemphvac.com3 of 20
  4. 14Oasis Heating and Coolingnamed by Claude2 of 20
  5. 15Aircor HVACnamed by ChatGPT2 of 20
  6. 16G & R Heating and Airnamed by Claude and Perplexity2 of 20
  7. 17Guardian Heating & Cooling Servicenamed by Gemini2 of 20
  8. 18Cahill Heating, Cooling, Electric, Plumbing & Sewercahillheating.com2 of 20
  9. 19Chicago HVAC Repair Doctornamed by Claude and Gemini2 of 20
  10. 20Preferred Comfort Heating & Coolingnamed by Claude2 of 20
  11. 21Air Blue Heating & Coolingperri-aire.com1 of 20
  12. 22American Weathermakersamericanweathermakers.com1 of 20
  13. 23Chicago ZIP codenamed by ChatGPT1 of 20
  14. 24Circuit Breakernamed by Gemini1 of 20
  15. 25GMH Mechanicalnamed by Claude1 of 20

133of the 134 hvac contractors we looked for came up in none of the answers.

Where they looked

The sites they cite.

The assistants cited 68 different sites. These came up most, with how many of the 20 answers each one appeared in.

  • Angi7 of 20
  • HomeAdvisor6 of 20
  • Thumbtack6 of 20
  • BBB5 of 20
  • Yelp4 of 20
  • Reddit3 of 20
  • Facebook1 of 20
  • Houzz1 of 20

Question by question

The first three names each assistant gave.

“best HVAC company in Chicago, IL”

ChatGPT

  1. 1Porterhouse Heating & Cooling
  2. 2Shavitz Heating and Air Conditioning
  3. 3American Family Heating & Air Conditioning

Claude

  1. 1GMH Mechanical
  2. 2Kats Heating & Cooling
  3. 3Oasis Plumbing, Heating & Cooling

Gemini

  1. 1Shavitz Heating and Air Conditioning
  2. 2Deljo Heating & Cooling
  3. 3Guardian Heating & Cooling Service

Perplexity

  1. 1Deljo Heating, Cooling & Plumbing
  2. 2All Temp Heating and Air Conditioning
  3. 3Four Seasons Heating, Air Conditioning, Plumbing, & Electric

“best company for furnace replacement in Chicago”

ChatGPT

  1. 1Deljo Heating & Cooling
  2. 2Carrier Factory Authorized Dealer
  3. 3All Temp Chicagoland

Claude

  1. 1King Heating, Cooling & Plumbing
  2. 2Four Seasons Heating & Cooling
  3. 3All Temp

Gemini

  1. 1Take Advantage of Local Rebates
  2. 2Peoples Gas
  3. 3Nicor Gas

Perplexity

  1. 1Lindemann Heating & Cooling
  2. 2Four Seasons Heating
  3. 3Plumbing & Electric

“emergency AC repair in Chicago, IL”

ChatGPT

  1. 1Chicago ZIP code
  2. 2Aircor HVAC Air Conditioning and Heating, Inc
  3. 3Windy City HVAC Repair

Claude

  1. 1ABC Plumbing, Sewer, Heating, Cooling and Electric
  2. 2Deljo Heating & Cooling
  3. 3Fly Plumbing & HVAC

Gemini

  1. 1Circuit Breaker
  2. 2Air Filter
  3. 3Frozen Lines

Perplexity

  1. 1American Weathermakers
  2. 2Four Seasons Heating & Cooling
  3. 3Eco Temp HVAC

“top rated AC repair company in Chicago”

ChatGPT

  1. 1Air Blue Heating & Cooling
  2. 2Deljo Heating & Cooling
  3. 3NATE Dealer

Claude

  1. 1King Heating, Cooling & Plumbing
  2. 2Four Seasons Heating & Cooling
  3. 3Shavitz Heating and Air Conditioning

Gemini

  1. 1Four Seasons Heating
  2. 2Plumbing & Electric
  3. 3All Temp Heating and Air Conditioning

Perplexity

  1. 1King Heating, Cooling & Plumbing
  2. 2Four Seasons Heating and Cooling

“who is the best heating and air company in Chicago, IL?”

ChatGPT

  1. 1All Temp Heating & Air Conditioning
  2. 2Four Seasons Heating
  3. 3Plumbing & Electric

Claude

  1. 1Browns Heating & Cooling
  2. 2Oasis Heating and Cooling
  3. 3City & Suburban Heating & Cooling

Gemini

  1. 1Four Seasons Heating
  2. 2Plumbing & Electric
  3. 3All Temp Heating & Air Conditioning

Perplexity

  1. 1Hero Air
  2. 2King Heating, Cooling & Plumbing
  3. 3Done By Tone Heating & Cooling

Recorded between September 25, 2026 and October 1, 2026. Answers change from one day to the next and from one phrasing to the next, which is why we date every scan and ask the same 5 questions again. Nothing on this page is edited: it is the scan log. How the scan works.

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