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

Who an AI assistant picked for HVAC in Welwyn, uk

Across 6 questions, Herts Boilers was picked 5 times and ranked first 4 times; LE Heating was picked 4 times and ranked first once.

Who came up in Welwyn

Every company the assistant named across the six questions, ordered by how often it was picked first. Tested on 2026-09-29.

CompanyPicked firstPicked
Herts Boilershertsboilers.co.uk4 of 65 of 6
LE Heatingleheating.co.uk1 of 65 of 6
Able Groupable-group.co.uk1 of 61 of 6
Grant's Plumbing & Heatinggrantsplumbing.org0 of 62 of 6
Castle Heatingcastleheatingherts.co.uk0 of 61 of 6

Question 1 of 6

“My boiler's stopped working. Who can fix it this week in Welwyn?”

Picked

  1. First
    Herts Boilers
    “Its Welwyn Garden City repair page says it aims to fix boilers the same day when parts are available and charges no weekday call-out fee.”
  2. #2
    LE Heating
    “It offers domestic heating breakdown repairs with fixed price quotes and is based in Welwyn Garden City.”

Considered and passed

  • Passed
    Grant's Plumbing & Heating
    “Its Welwyn Village page says repairs are usually same day, but its listed coverage and base are less clearly local to Welwyn than the first choices.”
  • Passed
    Able Group
    “It advertises a quick response and no call-out charge for boiler servicing in Welwyn, but I found less evidence specific to boiler breakdown repairs.”

Question 2 of 6

“Who's the best heating engineer in Welwyn?”

Picked

  1. First
    Herts Boilers
    “It publishes local repair terms, a same-day repair commitment subject to parts, and Gas Safe registration.”
  2. #2
    LE Heating
    “It offers domestic heating and plumbing in Welwyn Garden City with fixed quotes and identifies itself as Gas Safe registered.”

Considered and passed

  • Passed
    Castle Heating
    “It is based in Welwyn Garden City and offers boiler repairs, but its site showed limited recent review evidence compared with the repair details available from Herts Boilers.”
  • Passed
    Grant's Plumbing & Heating
    “It provides local boiler servicing and repairs, but the page states it is based in Harlow and covers Welwyn Village as part of a wider area.”

Question 3 of 6

“I need a new boiler fitted in Welwyn. Who should I get quotes from, and roughly what will it cost?”

Picked

  1. First
    LE Heating
    “It offers boiler installation in the Welwyn Garden City area and describes a survey followed by a fixed price quote.”
  2. #2
    Herts Boilers
    “It serves Welwyn Garden City and lists boiler replacement and installation among its services.”
  3. #3
    Castle Heating
    “It is based in Welwyn Garden City and lists boiler installation among its local heating services.”

Considered and passed

  • Passed
    Grant's Plumbing & Heating
    “It lists boiler installations for Welwyn Village, but the page’s response and service information focuses more on servicing and repairs.”

Question 4 of 6

“No heating or hot water, can someone come out today? I'm in Welwyn.”

Picked

  1. First
    Herts Boilers
    “Its local page explicitly states a same-day boiler repair commitment, conditional on parts being available.”
  2. #2
    LE Heating
    “It offers domestic heating breakdown repairs around Welwyn Garden City with fixed quotes.”

Considered and passed

  • Passed
    Able Group
    “Its Welwyn page advertises a 24-hour response for boiler servicing, but not clearly for emergency boiler breakdown repairs.”
  • Passed
    Grant's Plumbing & Heating
    “It says it usually responds the same day for repairs, but its stated coverage window and Harlow base make today’s local availability uncertain.”

Question 5 of 6

“I want my boiler serviced before winter in Welwyn. Who can I book online?”

Picked

  1. First
    Able Group
    “Its Welwyn boiler servicing page describes an appointment-selection step and local servicing coverage.”
  2. #2
    Grant's Plumbing & Heating
    “It has a dedicated Welwyn Village boiler service page with annual service details and a stated starting price.”

Considered and passed

  • Passed
    LE Heating
    “It provides local heating services, but I found a contact and callback form rather than a service booking calendar.”
  • Passed
    Herts Boilers
    “It lists boiler service work, but the pages I reviewed direct customers to call or message rather than book an appointment online.”

Question 6 of 6

“Which heating engineer in Welwyn shows fixed prices, so I know the cost upfront?”

Picked

  1. First
    Herts Boilers
    “Its Welwyn Garden City repair page says repairs are charged by the job and chargeable items are discussed with customers in advance.”
  2. #2
    LE Heating
    “It says it provides fixed quotes after inspection for boiler installation and heating breakdown repairs.”
  3. #3
    Grant's Plumbing & Heating
    “It states that it provides fixed written quotes and publishes starting prices for servicing in Welwyn Village.”

Considered and passed

  • Passed
    Able Group
    “It advertises quotes and no call-out fee for servicing, but I did not find a specific fixed price for a repair on the Welwyn page.”

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