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

Who an AI assistant picked for HVAC in Derry, NH

Paul the Plumber was picked in all 6 questions and ranked first in 3; ABSCO Heating and Cal's Air Conditioning & Heating each ranked first twice.

Who came up in Derry

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

CompanyPicked firstPicked
Paul the Plumberpaultheplumbernh.com4 of 65 of 6
Cal's Air Conditioning & Heatingcalsairandheat.com1 of 63 of 6
ABSCO Heatingabscoheating.com1 of 62 of 6
Hatfield Brothers Mechanicalhatbrosmech.com0 of 62 of 6
Comfort Air Servicescomfortairservices.com0 of 61 of 6

Question 1 of 6

“My furnace won't turn on. Who can fix it this week in Derry, New Hampshire?”

Picked

  1. First
    ABSCO Heating
    “It serves Derry, advertises round-the-clock emergency service, and says it can often send someone within the hour.”
  2. #2
    Paul the Plumber
    “It offers emergency furnace repair in Derry and says it provides upfront pricing.”

Considered and passed

  • Passed
    Cal's Air Conditioning & Heating
    “It advertises emergency service and furnace repair, but does not give a specific response window on the pages reviewed.”
  • Passed
    Hatfield Brothers Mechanical
    “It offers heating repair and maintenance in Derry, but lists weekday business hours and no specific emergency response window.”

Question 2 of 6

“Who is the best heating and air company in Derry, New Hampshire?”

Picked

  1. First
    Paul the Plumber
    “It serves Derry across furnace, heat pump, boiler, and AC work and reports a 4.8 Google rating with over 2,900 reviews.”
  2. #2
    Cal's Air Conditioning & Heating
    “It is a local HVAC provider serving Derry with furnace, heat pump, and AC repair and installation plus 24-hour emergency service.”

Considered and passed

  • Passed
    ABSCO Heating
    “It has long-standing service in the area and 24/7 emergency coverage, but the sources reviewed provided less review-count evidence than Paul the Plumber.”
  • Passed
    Daigle Plumbing, Heating & Cooling
    “It is a family-owned Derry provider with heating and cooling services, but the reviewed pages did not give as much specific furnace-service detail.”
  • Passed
    Hatfield Brothers Mechanical
    “It offers residential heating and cooling in Derry, but shows weekday business hours and less evidence of a broad emergency response.”

Question 3 of 6

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

Picked

  1. First
    Paul the Plumber
    “It installs furnaces and heat pumps and publishes a Derry-area furnace replacement planning range.”
  2. #2
    Cal's Air Conditioning & Heating
    “It offers Derry-area furnace and heat-pump installation and invites homeowners to request a free quote.”
  3. #3
    Hatfield Brothers Mechanical
    “It provides residential furnace and heat-pump installation in the Derry area and advertises financing.”

Considered and passed

  • Passed
    ABSCO Heating
    “It offers furnace installation and free estimates for larger projects, but does not publish a replacement price range.”
  • Passed
    Daigle Plumbing, Heating & Cooling
    “It offers heating installation, but the reviewed pages did not provide an installation cost range.”

Question 4 of 6

“My AC isn't working, can someone come out today? I'm in Derry, New Hampshire.”

Picked

  1. First
    Cal's Air Conditioning & Heating
    “It serves Derry and explicitly advertises 24-hour emergency service for AC and other system failures.”
  2. #2
    ABSCO Heating
    “It serves Derry with 24/7 emergency coverage and states it often sends someone within the hour.”
  3. #3
    Comfort Air Services
    “It advertises same-day AC repair and 24/7 availability for Derry-area homes.”

Considered and passed

  • Passed
    Paul the Plumber
    “It offers emergency AC repair in Derry, but the sources reviewed did not establish a same-day appointment.”
  • Passed
    Daigle Plumbing, Heating & Cooling
    “It offers AC services and 24/7 contact language, but the reviewed pages did not state same-day AC availability.”

Question 5 of 6

“I want my furnace serviced before winter in Derry, New Hampshire. Who can I book online?”

Picked

  1. First
    Paul the Plumber
    “It offers furnace maintenance in Derry and its site includes online appointment booking.”
  2. #2
    Hatfield Brothers Mechanical
    “It offers routine heating maintenance and provides a “Book Service Now” link.”

Considered and passed

  • Passed
    ABSCO Heating
    “It provides heating maintenance but its site directs customers to a contact form or phone rather than an online booking calendar.”
  • Passed
    Cal's Air Conditioning & Heating
    “It offers furnace service, but the reviewed pages ask customers to call or submit a contact form rather than book a specific service online.”

Question 6 of 6

“Which heating company in Derry, New Hampshire has upfront pricing, so I know the cost before they come?”

Picked

  1. First
    Paul the Plumber
    “It explicitly advertises upfront furnace pricing and says customers see the cost before work begins.”

Considered and passed

  • Passed
    Rowell's Services
    “It explicitly promises upfront per-job pricing for AC repairs in Derry, but that page is specific to air conditioning rather than furnace work.”
  • Passed
    Cal's Air Conditioning & Heating
    “It offers free quotes for furnace service but does not describe upfront repair pricing before a visit.”
  • Passed
    ABSCO Heating
    “It offers free estimates for some projects and says its prices are competitive, but does not make a clear upfront furnace-pricing claim on the pages reviewed.”

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