NamedTest

Which heating and air companies does AI name in Chicago, IL?

Deljo Heating & Cooling was the heating and air company AI named most often in Chicago, IL: in 13 of 20 answers in October 2026.

Across 20 answers to 10 customer questions, Perplexity and Gemini (model knowledge) named 30 different heating and air companies. The 6 named most often held 60% of all mentions.

Perplexity named Eco Temp HVAC most often (4 of 10 answers) and Gemini named Deljo Heating & Cooling most often (10 of 10 answers).

Answers collected October 15, 2026. AI answers change from day to day.

The heating and air companies AI named most

BusinessAnswers naming it
Deljo Heating & CoolingNamed by Perplexity and Gemini13 of 20
Four Seasons Heating & CoolingNamed by Perplexity and Gemini12 of 20
All Temp Heating & CoolingNamed by Gemini8 of 20
Eco Temp HVACNamed by Perplexity4 of 20
All Temp Heating and Air ConditioningNamed by Perplexity and Gemini3 of 20
Architectural Heating & CoolingNamed by Gemini2 of 20
Brown's Heating & CoolingNamed by Perplexity2 of 20
Green Air CareNamed by Gemini2 of 20
HeatmastersNamed by Perplexity2 of 20
ServiceMaxNamed by Gemini2 of 20

Who each AI tool named

Perplexity

10 of its 10 answers named at least one business.

  1. Eco Temp HVAC (4)
  2. Four Seasons Heating & Cooling (4)
  3. Deljo Heating & Cooling (3)
  4. All Temp Heating and Air Conditioning (2)
  5. Brown's Heating & Cooling (2)
  6. Heatmasters (2)
  7. Air-Rite Heating & Cooling (1)
  8. American Weathermakers (1)
  9. Chicago Comfort HVAC (1)
  10. Frontline Heating & Cooling (1)

Gemini (model knowledge)

10 of its 10 answers named at least one business.

  1. Deljo Heating & Cooling (10)
  2. All Temp Heating & Cooling (8)
  3. Four Seasons Heating & Cooling (8)
  4. Architectural Heating & Cooling (2)
  5. Green Air Care (2)
  6. ServiceMax (2)
  7. A-Better Heating and Air Conditioning (1)
  8. A.B.C. Plumbing, Sewer, Heating, Cooling and Electric (1)
  9. Air Blue Heating and Cooling (1)
  10. All Temp Heating and Air Conditioning (1)

What AI named for each question

The businesses each AI tool named in its answer to each question, in the order the answer named them.

  1. I need emergency HVAC repair in Chicago, IL right now. Who should I call?

    Perplexity

    1. Heatmasters
    2. American Weathermakers
    3. RJ's Heating & Cooling

    Gemini

    1. All Temp Heating and Air Conditioning
    2. Deljo Heating & Cooling
    3. Architectural Heating & Cooling
    4. Four Seasons Heating & Cooling

  2. How much does furnace repair cost in Chicago, IL, and which HVAC companies charge fair prices?

    Perplexity

    1. Four Seasons Heating & Cooling
    2. Frontline Heating & Cooling
    3. Brown's Heating & Cooling
    4. Deljo Heating & Cooling

    Gemini

    1. All Temp Heating & Cooling
    2. Deljo Heating & Cooling
    3. Air Blue Heating and Cooling
    4. C&L Heating and Air Conditioning

  3. Who is the most trusted HVAC company in Chicago, IL?

    Perplexity

    1. Hero Air

    Gemini

    1. All Temp Heating & Cooling
    2. Deljo Heating & Cooling
    3. ServiceMax
    4. Hayes Mechanical
    5. Four Seasons Heating & Cooling

  4. Which HVAC company in Chicago, IL is best for furnace installation?

    Perplexity

    1. All Temp Heating and Air Conditioning
    2. Deljo Heating & Cooling

    Gemini

    1. Deljo Heating & Cooling
    2. Four Seasons Heating & Cooling
    3. ServiceMax
    4. A.B.C. Plumbing, Sewer, Heating, Cooling and Electric

  5. My air conditioner stopped working in Chicago, IL. Which HVAC company can come today?

    Perplexity

    1. Heatmasters
    2. Eco Temp HVAC
    3. SAVA HVAC

    Gemini

    1. Four Seasons Heating & Cooling
    2. Deljo Heating & Cooling
    3. All Temp Heating & Cooling
    4. Green Air Care

  6. Who is the most affordable HVAC company near Chicago, IL?

    Perplexity

    1. Eco Temp HVAC
    2. Chicago Comfort HVAC

    Gemini

    1. Deljo Heating & Cooling
    2. All Temp Heating & Cooling
    3. Architectural Heating & Cooling
    4. Top Notch Heating, Cooling & Plumbing

  7. Which heating and cooling companies in Chicago, IL have the best reviews?

    Perplexity

    1. Deljo Heating & Cooling
    2. All Temp Heating and Air Conditioning
    3. Air-Rite Heating & Cooling

    Gemini

    1. Deljo Heating & Cooling
    2. Four Seasons Heating & Cooling
    3. All Temp Heating & Cooling
    4. Green Air Care
    5. A-Better Heating and Air Conditioning

  8. I need air conditioner repair in Chicago, IL. Which local HVAC company do you recommend?

    Perplexity

    1. Four Seasons Heating & Cooling

    Gemini

    1. Deljo Heating & Cooling
    2. Four Seasons Heating & Cooling
    3. All Temp Heating & Cooling
    4. Black Diamond Plumbing & Mechanical

  9. Is there a 24 hour HVAC company in Chicago, IL that answers the phone at night?

    Perplexity

    1. Eco Temp HVAC
    2. Four Seasons Heating & Cooling
    3. Brown's Heating & Cooling

    Gemini

    1. All Temp Heating & Cooling
    2. Deljo Heating & Cooling
    3. Four Seasons Heating & Cooling
    4. Modern Heating & Cooling
    5. People's Gas
    6. Nicor Gas

  10. What is a reasonable price for air conditioner installation in Chicago, IL, and who should I get quotes from?

    Perplexity

    1. Eco Temp HVAC
    2. Four Seasons Heating & Cooling
    3. Sensational HVAC
    4. Home Depot

    Gemini

    1. Deljo Heating & Cooling
    2. All Temp Heating & Cooling
    3. American Vintage Home
    4. Four Seasons Heating & Cooling

Sources AI cited

10 of the 20 answers cited sources. The sites cited most, by the number of answers citing them:

  1. fourseasonsheatingcooling.com (5)
  2. trane.com (5)
  3. consumeraffairs.com (4)
  4. ecotemphvac.com (4)
  5. homedepot.com (4)
  6. rjs-hvac.com (4)
  7. serviceagent.ai (4)
  8. bestpickreports.com (3)
  9. brownshvac.net (3)
  10. checkbook.org (3)

Gemini (model knowledge) answers from what it learned in training, without a web search, so it cites no sources.

What the most-named heating and air companies have in common

3 of the 6 were named by both Perplexity and Gemini. The rest were named by one tool only, which is common: the tools search and remember differently.

4 of the 6 had their own website among the sources the answers cited, and AI gave a website for 6 of them.

By the kind of question: 6 of them came up for urgent requests, 5 for questions about price, 4 for questions about trust and reviews, and 4 for questions about a specific service.

How we measured this

We asked 10 questions a customer might ask about heating and air companies in Chicago, IL, once on each AI tool, through each tool's official API. For example:

  • I need emergency HVAC repair in Chicago, IL right now. Who should I call?
  • Who is the most trusted HVAC company in Chicago, IL?
  • Which HVAC company in Chicago, IL is best for furnace installation?

Perplexity searches the web and shows its sources. Gemini (model knowledge) answers without a web search, from what the model learned in training, so its picks can be out of date. A language model read each answer and listed the businesses it named, and a business counts once per answer. These results describe what AI said on these dates. They are not a rating of any business's work.

Data as of October 15, 2026.

Corrections

If a business name was misread, or a business is listed that has closed, email hello@namedtest.com. We check it against the stored answers and correct the page.

Does AI name your business?

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Read the guide: How to get AI to recommend your HVAC business

Questions about this page

Which heating and air companies does AI name most in Chicago, IL?

Deljo Heating & Cooling was the heating and air company AI named most often in Chicago, IL: in 13 of 20 answers in October 2026.

Which AI tools were asked, and when?

Perplexity and Gemini, 10 customer questions each, answered between October 15, 2026 and October 15, 2026. Gemini (model knowledge) answers from what the model learned in training, without a web search.

How can a heating and air company get named by AI more often?

Make the business easy for AI to read and to trust: let AI crawlers into your website, keep your name, address and phone the same everywhere, answer common customer questions on your site, and earn reviews on the sites AI cites. The free check shows whether AI names your business today.