Who came up in Herndon
Every company the assistant named across the six questions, ordered by how often it was picked first. Tested on 2026-09-30.
| Company | Picked first | Picked |
|---|---|---|
| Falcon Heating & Air Conditioningfalconhvac.com | 5 of 6 | 6 of 6 |
| Aire Serv of NOVA McLeanaireserv.com | 1 of 6 | 2 of 6 |
| Cardinal Plumbing Heating & Aircardinalplumbingva.com | 0 of 6 | 6 of 6 |
| R.A. Dobsonradobson.com | 0 of 6 | 3 of 6 |
Question 1 of 6
“My furnace won't turn on. Who can fix it this week in Herndon, Virginia?”
Picked
- FirstFalcon Heating & Air Conditioning
“Falcon explicitly advertises same-day furnace repairs in Herndon and says emergency appointments are prioritized.”
- #2Cardinal Plumbing Heating & Air
“Cardinal says it offers same-day urgent HVAC repairs, 24/7 availability, and service in Herndon.”
- #3R.A. Dobson
“R.A. Dobson serves Herndon and says its nearby Sterling shop helps it respond quickly to no-heat calls.”
Considered and passed
- PassedAire Serv of NOVA McLean
“Its Herndon furnace page promotes emergency service and upfront pricing but does not give a same-day response commitment.”
- PassedWoody's Sudden Service
“It serves Herndon and says it responds quickly, but the page does not specify same-day availability.”
Question 2 of 6
“Who is the best heating and air company in Herndon, Virginia?”
Picked
- FirstFalcon Heating & Air Conditioning
“Falcon combines Herndon-specific service coverage with a stated 4.9 Google rating, same-day repairs, and more than 40 awards.”
- #2R.A. Dobson
“R.A. Dobson has a Herndon-specific HVAC page, says it is family-owned since 1975, and lists 4.8 stars from 178 Google reviews.”
- #3Cardinal Plumbing Heating & Air
“Cardinal serves Herndon, advertises 24/7 availability and same-day service, and lets customers schedule online.”
Considered and passed
- PassedAire Serv of NOVA McLean
“It serves Herndon and promotes upfront pricing, but the local furnace page lists 27 reviews and does not show a comparable local Google rating.”
- PassedDave's Heating & Air
“It serves Herndon and offers heating, cooling, maintenance, and financing, but its site presents fewer visible differentiators than the top picks.”
- PassedWoody's Sudden Service
“It serves Herndon and has a long operating history, but the available service page gives fewer specific response and review details.”
Question 3 of 6
“I need a new furnace or heat pump installed in Herndon, Virginia. Who should I get quotes from, and roughly what will it cost?”
Picked
- FirstFalcon Heating & Air Conditioning
“Falcon installs furnaces and heat pumps in Herndon and allows homeowners to schedule service online.”
- #2R.A. Dobson
“R.A. Dobson offers furnace and heat-pump replacements in Herndon and highlights financing and its Carrier dealer status.”
- #3Cardinal Plumbing Heating & Air
“Cardinal installs furnaces and serves Herndon, with online scheduling and free estimates described on its site.”
Considered and passed
- PassedDave's Heating & Air
“It offers furnace and heat-pump repair or replacement in Herndon, but its local page does not give installed price ranges.”
- PassedAire Serv of NOVA McLean
“It installs heating systems in Herndon and offers upfront pricing, but it does not publish a project estimate range.”
Question 4 of 6
“My AC isn't working, can someone come out today? I'm in Herndon, Virginia.”
Picked
- FirstFalcon Heating & Air Conditioning
“Falcon's Herndon page explicitly advertises same-day repairs and says it is on call for urgent breakdowns.”
- #2Cardinal Plumbing Heating & Air
“Cardinal advertises same-day urgent HVAC service, round-the-clock availability, and Herndon coverage.”
Considered and passed
- PassedR.A. Dobson
“It says it serves Herndon often the same day and responds quickly to no-cool calls, but its published hours are weekdays.”
- PassedAire Serv of NOVA McLean
“It offers emergency HVAC service in Herndon, but its local page does not make a specific same-day appointment claim.”
- PassedDave's Heating & Air
“It offers AC repair in Herndon, but its local page does not promise same-day availability.”
Question 5 of 6
“I want my furnace serviced before winter in Herndon, Virginia. Who can I book online?”
Picked
- FirstFalcon Heating & Air Conditioning
“Falcon's Herndon page has a Book Now link and its site offers heating maintenance agreements.”
- #2Cardinal Plumbing Heating & Air
“Cardinal offers online scheduling and maintenance plans for customers in Herndon.”
- #3Aire Serv of NOVA McLean
“Aire Serv offers tune-ups and maintenance for Herndon homes and provides an online service request.”
Considered and passed
- PassedR.A. Dobson
“It offers maintenance agreements and an online estimate form, but its Herndon page does not show a direct online booking calendar.”
- PassedDave's Heating & Air
“It offers furnace maintenance and appointment scheduling, but the reviewed page does not make the booking path as prominent as the picks.”
Question 6 of 6
“Which heating company in Herndon, Virginia has upfront pricing, so I know the cost before they come?”
Picked
- FirstAire Serv of NOVA McLean
“Aire Serv says Herndon customers receive flat-rate quotes with the full cost upfront and no hidden fees.”
- #2Falcon Heating & Air Conditioning
“Falcon says it gives upfront pricing before furnace work begins and does not add surprise charges.”
- #3Cardinal Plumbing Heating & Air
“Cardinal advertises transparent estimates with no hidden fees for HVAC customers.”
Considered and passed
- PassedR.A. Dobson
“It advertises fair, upfront pricing, but the page does not explain its flat-rate process as explicitly as Aire Serv does.”
- PassedDave's Heating & Air
“It says it provides a transparent replacement quote before work starts, but does not describe its repair pricing process on the reviewed page.”
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