Best HVAC companies in San Francisco, CA, according to AI
We ask ChatGPT, Claude, Gemini, Perplexity and 8 more AI assistants the questions real customers ask — like “Who are the best HVAC companies in San Francisco, CA?” — and publish who they name. Here is this month's answer, ranked by how often they name each business.
As of October 1, 2026, Cabrillo Plumbing, Heating & Air is the HVAC company AI assistants most recommend in San Francisco, CA, named by 7 of 12 assistants. Associated Heating of San Francisco and Galaxy Heating & Air Conditioning rank next.
AI's top HVAC companies in San Francisco for October 2026
Every business below was named by the AI assistants themselves when we asked for HVAC companies in San Francisco, CA. The more assistants that name a business — and the more often — the higher it ranks.
- RankWho the AIs name most often, and most in agreement.
- AIs that name itHow many of the 12 assistants we asked put this business in their answer.
- vs last monthUp, down or new since the previous monthly edition.
Every HVAC company AI named (22)
Tap a name for that business's AI profile: rank history, which assistants name it, and who's just ahead.| Rank | Business & the AIs that name it | AIs that name it | Times named | vs last month |
|---|---|---|---|---|
| 1 |
Google AI OverviewsChatGPTClaudeMicrosoft CopilotDeepSeekGeminiSiri
|
7 of 12 | 12 | same |
| 2 |
ChatGPTClaudeMicrosoft CopilotGeminiPerplexity
|
5 of 12 | 8 | ▲ 20 places up |
| 3 |
Google AI OverviewsAlexaClaudeGeminiSiri
|
5 of 12 | 8 | ▼ 1 places down |
| 4 |
ChatGPTClaudeMicrosoft Copilot
|
3 of 12 | 6 | ▼ 1 places down |
| 5 |
Google AI OverviewsClaudeMicrosoft CopilotGeminiSiri
|
5 of 12 | 5 | ▼ 1 places down |
| 6 |
ChatGPTGemini
|
2 of 12 | 4 | same |
| 7 |
Google AI OverviewsAlexaChatGPT
|
3 of 12 | 3 | new |
| 8 |
ClaudePerplexity
|
2 of 12 | 3 | new |
| 9 |
Microsoft CopilotDeepSeek
|
2 of 12 | 3 | new |
| 10 |
ChatGPTClaude
|
2 of 12 | 3 | ▼ 5 places down |
| 11 |
A Plus Quality HVAC Microsoft Copilot
|
1 of 12 | 3 | new |
| 12 |
Allied Heating & Air Conditioning Mistral
|
1 of 12 | 3 | same |
| 13 |
Hassler Heating & Air Conditioning hasslerheating.com Mistral
|
1 of 12 | 3 | ▼ 5 places down |
| 14 |
Ortega Heating & Air Conditioning Mistral
|
1 of 12 | 3 | same |
| 15 |
Atlas Heating & Ventilating Co. ChatGPTClaude
|
2 of 12 | 2 | new |
| 16 |
BEST CHOICE HVAC, INC ClaudePerplexity
|
2 of 12 | 2 | new |
| 17 |
San Francisco Expert Heating and Air ClaudePerplexity
|
2 of 12 | 2 | new |
| 18 |
 American HVAC Inc. americanhvacinc.com Mistral
|
1 of 12 | 2 | ▼ 2 places down |
| 19 |
Caccia Plumbing Heating & Cooling Meta AI
|
1 of 12 | 2 | new |
| 20 |
Moore Heating & Air Conditioning Meta AI
|
1 of 12 | 2 | new |
| 21 |
Petersen HVAC petersenhvac.com Mistral
|
1 of 12 | 2 | new |
| 22 |
Sila Heating & Air DeepSeek
|
1 of 12 | 2 | new |
Asked the ways customers actually ask
The same assistants, the same week, three phrasings of one need — ranked separately. A business that wins “best” but loses “most affordable” is losing a different customer each time.
37 sources the assistants read
Every site behind this month's answers, ranked by share of all citations, with how many assistants relied on each. Earning a mention on the pages near the top is what moves a ranking — and nothing on this page can be bought.
- 01 consumeraffairs.comDirectory & reviews 9.1% 3 of 12 assistants
- 02 yelp.comDirectory & reviews 7.6% 3 of 12 assistants
- 03 angi.comDirectory & reviews 6.1% 3 of 12 assistants
- 04 serviceagent.ai 6.1% 2 of 12 assistants
- 05 datasetlabs.ai 4.5% 3 of 12 assistants
- 06 galaxyservices.com 4.5% 3 of 12 assistants
- 07 bestprosintown.comDirectory & reviews 4.5% 1 of 12 assistants
- 08 google.comDirectory & reviews 4.5% 1 of 12 assistants
Show 17 more sourcesShow fewer
- 09 local.yahoo.com 3% 2 of 12 assistants
- 10 reviews.birdeye.comDirectory & reviews 3% 1 of 12 assistants
- 11 m.yelp.comDirectory & reviews 3% 1 of 12 assistants
- 12 associatedheatingsf.com 3% 1 of 12 assistants
- 13 www2.cslb.ca.govLicensing 3% 1 of 12 assistants
- 14 reddit.comDirectory & reviews 3% 1 of 12 assistants
- 15 hvacservice.io 1.5% 1 of 12 assistants
- 16 homeguide.comDirectory & reviews 1.5% 1 of 12 assistants
- 17 hvacapproved.com 1.5% 1 of 12 assistants
- 18 hvaclaboratory.com 1.5% 1 of 12 assistants
- 19 homeyou.com 1.5% 1 of 12 assistants
- 20 afpheating.com 1.5% 1 of 12 assistants
- 21 atlasheat.com 1.5% 1 of 12 assistants
- 22 thumbtack.comDirectory & reviews 1.5% 1 of 12 assistants
- 23 trustanalytica.org 1.5% 1 of 12 assistants
- 24 merriam-webster.comReference 1.5% 1 of 12 assistants
-
25
schmittheating.comRanked #6 · Schmitt Heating & Air Conditioning
1.5%
1 of 12 assistants
+ 12 more sites cited less often, together 18.6% of citations.
No business can pay to be ranked · how this is measured
Is your business in this answer?
12 assistants answered “Who are the best HVAC companies in San Francisco, CA?” this month and named 22 HVAC companies in San Francisco, CA. Which side of that list you are on decides whether a customer asking that question ever hears your name.
On the list, and want to be higher?
Rank here is set by how many assistants repeat your name and which sources they read to decide it — the 25 sources above are the ones that shaped this answer. Our platform measures exactly that for one business: the same 12 assistants, daily instead of monthly, which of those sources you appear on and which you don't, and every fix tracked until the answer changes.
You're not on the list
Then for this question you were not in the answer at all — not ranked low, absent from the shortlist, with nothing to tell you it happened. That is the ordinary case: most HVAC companies in San Francisco, CA are never named. AI Pulse shows you what each assistant says about your business and what to change so it names you.
Common questions
Who is the best HVAC company in San Francisco, CA, according to AI?
As of October 1, 2026, Cabrillo Plumbing, Heating & Air — named by 7 of 12 AI assistants, 12 times in all. Associated Heating of San Francisco and Galaxy Heating & Air Conditioning rank next.
How many HVAC companies did AI assistants name in San Francisco, CA?
69 businesses were named across 36 answers from 12 assistants, on 3 phrasings of the question. 22 of them were named often enough to rank.
How often is this ranking updated?
Every month. This edition covers October 2026; the next one publishes in November 2026. Each business's move since the last edition is shown in the "vs last month" column.
How is this ranking measured?
Fixed, unbranded consumer questions — including "Who are the best HVAC companies in San Francisco, CA?" — are put to the same assistants every month. Named businesses are resolved to one entity, a name mentioned only once is dropped as unverifiable, and a cell publishes nothing until enough answers accumulate. No business can pay to appear or to rank higher.
The questions we ask
The prompt set is fixed and unbranded, so month-over-month movement means the assistants changed their answer — not that we changed the question.
- Who are the best HVAC companies in San Francisco, CA?
- I need a HVAC company in San Francisco, CA. Who do you recommend?
- Best affordable HVAC company near San Francisco?
More San Francisco rankings
Every category we track in San Francisco, CA, measured the same way.
HVAC & Air Conditioning in other cities
Move up this list
This page measures a whole market once a month, for free. Our software measures a single business across the same 12 assistants daily — which ones name you, which sources they trust to decide it, what to fix next, and whether the answer actually moved.
AI Pulse: all 12 AI assistants, every feature, cancel anytime.