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HVAC city tests · California · one AI assistant's answers, September 2026

Who an AI assistant picked for HVAC in Mountain View, CA

Across 6 questions, Spark Appliance Repair was picked 5 times and first 4 times; Plum HVAC was picked 3 times and first 2 times. The questions allow several recommendations, so these totals count appearances in ranked picks.

Who came up in Mountain View

Every company the assistant named across the six questions, ordered by how often it was picked first. Tested on 2026-09-30.

CompanyPicked firstPicked
Spark Appliance Repairsparkappliancerepair.com3 of 64 of 6
Plum HVACplumhvac.com3 of 63 of 6
Altai Heating & Airaltaihvac.com0 of 63 of 6
Monteros Heating and Airmonteroshvac.com0 of 63 of 6
Galaxy Heating & Airgalaxyservices.com0 of 61 of 6

Question 1 of 6

“My furnace won't turn on. Who can fix it this week in Mountain View, California?”

Picked

  1. First
    Spark Appliance Repair
    “Its Mountain View furnace page advertises same-day service, online booking, an $85 diagnostic fee that is waived with a repair, and says most repairs are completed on the same visit.”
  2. #2
    Altai Heating & Air
    “Its site says it offers same-day service on most days and serves residential HVAC customers in the Bay Area.”

Considered and passed

  • Passed
    Monteros Heating and Air
    “Its residential repair page covers furnaces and heat pumps and offers online appointment requests, but it lists weekday business hours and does not promise same-day service.”
  • Passed
    Plum HVAC
    “It provides furnace repair, but the pages I read describe scheduled service and do not claim same-day availability.”

Question 2 of 6

“Who is the best heating and air company in Mountain View, California?”

Picked

  1. First
    Plum HVAC
    “It is based in Mountain View, publishes detailed furnace service information, and its site presents it as a family-owned HVAC company with broad heating and cooling services.”
  2. #2
    Spark Appliance Repair
    “Its Mountain View furnace page explicitly states same-day service, online booking, and published diagnostic pricing.”
  3. #3
    Monteros Heating and Air
    “It is based in Mountain View and describes residential furnace, heat pump, and air-conditioning repairs across major brands.”

Considered and passed

  • Passed
    Altai Heating & Air
    “It advertises same-day service and broad residential HVAC work, but the site identifies its base as Palo Alto rather than Mountain View.”

Question 3 of 6

“I need a new furnace or heat pump installed in Mountain View, California. Who should I get quotes from, and roughly what will it cost?”

Picked

  1. First
    Plum HVAC
    “It describes furnace replacement and installation and its site includes customer accounts of heat pump installations, permitting, and rebate assistance.”
  2. #2
    Monteros Heating and Air
    “It offers residential HVAC installation and says it helps homeowners select equipment suited to their home’s needs.”
  3. #3
    Altai Heating & Air
    “It provides residential HVAC installation and advertises a one-year labor warranty on repairs.”

Considered and passed

  • Passed
    Galaxy Heating & Air
    “Its published price guide gives useful Bay Area furnace and heat pump ranges, but the page describes service across the Bay Area without a Mountain View-specific service commitment.”

Question 4 of 6

“My AC isn't working, can someone come out today? I'm in Mountain View, California.”

Picked

  1. First
    Spark Appliance Repair
    “Its site lists AC repair among its services and advertises same-day service in Mountain View with online booking.”
  2. #2
    Altai Heating & Air
    “It says same-day HVAC service is available on most days and provides residential air-conditioning repair.”

Considered and passed

  • Passed
    Monteros Heating and Air
    “It repairs residential air conditioners and offers appointment requests, but does not state same-day service on its repair page.”

Question 5 of 6

“I want my furnace serviced before winter in Mountain View, California. Who can I book online?”

Picked

  1. First
    Plum HVAC
    “Its furnace page describes maintenance and tune-ups, and the site provides a Schedule My Service link.”
  2. #2
    Monteros Heating and Air
    “It offers preventative maintenance and lets customers schedule an appointment online.”

Considered and passed

  • Passed
    Spark Appliance Repair
    “It offers online booking and furnace repair, but the pages reviewed emphasize repairs rather than seasonal furnace tune-ups.”

Question 6 of 6

“Which heating company in Mountain View, California, has upfront pricing, so I know the cost before they come?”

Picked

  1. First
    Spark Appliance Repair
    “Its furnace page publishes an $85 service and diagnostic fee and explains when the diagnostic is free with a repair.”
  2. #2
    Galaxy Heating & Air
    “It publishes typical Bay Area furnace replacement prices by system type, though they are estimates rather than a home-specific quote.”

Considered and passed

  • Passed
    Plum HVAC
    “Its site says it aims for fair pricing and reviews mention competitive estimates, but I did not find a published service-call price or furnace price list.”
  • Passed
    Monteros Heating and Air
    “It offers free quotes for installation, but the repair page does not list a service-call or repair price.”

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