HVAC and plumbing in Washington, DC: who shows up online
All 20 businesses in this Washington, DC sample have a website. Every one of the 13 audited sites uses HTTPS and works on mobile. The basics are covered, so the gaps show up in reviews and AI visibility.
The top 20 hvac and plumbing on Google, measured
- 100%have a website
- 85%of sites use LocalBusiness markup
- 62%of sites publish llms.txt
- 77%of sites run Google Analytics or Tag Manager
- 4.8★average Google rating
- 412median Google reviews
20 businesses from the Google results for “HVAC and plumbing company in Washington, DC”. 20 list a website; we checked the homepage of the 13 that loaded.
Who ChatGPT recommends
“Who is the best HVAC or plumbing company in Washington, DC?”
- Fry Plumbing, Heating and Air Conditioning Corp.
- John C. Flood
- Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical
- Thomas E. Clark
7 of the 20 businesses in the Google results were named.
The review leaders
| Business | Rating | Reviews | Named by ChatGPT |
|---|---|---|---|
| Michael & Son Services | 4.7 | 16072 | No |
| Len The Plumber Heating & Air, LLC | 4.6 | 8880 | No |
| F.H. Furr Plumbing, Heating, Air Conditioning & Electrical | 4.7 | 6863 | No |
| John C. Flood | 4.8 | 5791 | Yes |
| Cardinal Plumbing Heating & Air Inc | 4.9 | 1973 | No |
What this means for your shop
LocalBusiness schema appears on 85% of audited sites, so adding it only puts you level with most of your competitors.
No audited site blocks AI crawlers, and 62% publish an llms.txt file, so keep your site open to AI tools and add one.
Ratings barely separate companies here, with 18 of 20 at 4.5 or higher and a median of 412 reviews, so review volume is where you can pull ahead.
HVAC and plumbing in Washington: questions
How do I get recommended by ChatGPT in Washington, DC?
We asked ChatGPT who the best company is. It named four, including John C. Flood and Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical. Reviews alone do not decide it, since Michael & Son Services has 16072 reviews and was not named.
How many reviews do the local leaders have?
The top five leaders range from 1973 to 16072 reviews. Michael & Son Services has 16072, and Cardinal Plumbing Heating & Air Inc has 1973 with a 4.9 rating.
What are most local sites missing?
Among the 13 audited sites, 85% have LocalBusiness schema and 62% have llms.txt. Analytics shows up on 77%, so the gaps are in the details, not the basics.
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.
Method: HopperCat pulled the top Google results for “HVAC and plumbing company in Washington, DC” on October 19, 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.