HVAC and plumbing in San Diego, CA: who shows up online
All 20 businesses we measured in San Diego have a website, and all 15 audited sites use HTTPS and work on mobile. Ratings are tight, with a 4.8 average and 19 of 20 rated 4.5 or higher. The median business has 1685 reviews.
The top 20 hvac and plumbing on Google, measured
- 100%have a website
- 93%of sites use LocalBusiness markup
- 47%of sites publish llms.txt
- 87%of sites run Google Analytics or Tag Manager
- 4.8★average Google rating
- 1685median Google reviews
20 businesses from the Google results for “HVAC and plumbing company in San Diego, CA”. 20 list a website; we checked the homepage of the 15 that loaded.
Who ChatGPT recommends
“Who is the best HVAC or plumbing company in San Diego, CA?”
- Bill Howe Plumbing, Heating & Air
- Anderson Plumbing, Heating & Air
- Mauzy
- Carini Home Services
- CSR Plumbing
5 of the 20 businesses in the Google results were named. 2 recommendations were for businesses outside that list.
The review leaders
| Business | Rating | Reviews | Named by ChatGPT |
|---|---|---|---|
| ASI, The White Glove Guys | 4.8 | 7643 | No |
| Anderson Plumbing, Heating & Air | 4.8 | 6572 | Yes |
| Bill Howe Plumbing, Heating & Air, Restoration & Flood Services | 4.8 | 6020 | Yes |
| Mauzy Cooling Heating Plumbing Electrical | 4.8 | 5493 | Yes |
| Anderson Plumbing, Heating & Air | 4.8 | 4759 | Yes |
What this means for your shop
Only 47% of audited sites have an llms.txt file, so more than half of your competitors have not added one yet.
0% of audited sites block AI crawlers, so keep your site open to them as well.
Local business schema is on 93% of audited sites and analytics on 87%, so both are baseline here.
HVAC and plumbing in San Diego: questions
How do I get recommended by ChatGPT in San Diego?
We asked ChatGPT who the best HVAC or plumbing company in San Diego, CA is. It named Bill Howe Plumbing, Heating & Air, Anderson Plumbing, Heating & Air, Mauzy, Carini Home Services and CSR Plumbing.
How many reviews do the local leaders have?
The top five range from 4759 to 7643 reviews, all at 4.8 stars. ASI, The White Glove Guys leads with 7643, and Anderson Plumbing, Heating & Air follows with 6572.
What are most local sites missing?
The clearest gap is llms.txt, which only 47% of audited sites have. Most of the basics are covered, with local business schema at 93% and tel links at 100%.
Where does your business stand?
This page shows the market. The free diagnostic shows you: 42 points on your site, your Google profile and what ChatGPT and Claude say about you, with the competitors beating you by name. Usually in under an hour.
HVAC and plumbing in other cities
Method: HopperCat pulled the top Google results for “HVAC and plumbing company in San Diego, CA” on October 15, 2026, checked each business homepage for HTTPS, mobile setup, LocalBusiness markup, llms.txt, AI-crawler rules and analytics, and asked ChatGPT the question above with web search on. Ratings and review counts are Google's at that date.