HVAC and plumbing in Madison, WI: who shows up online
All 15 HVAC and plumbing businesses we checked in Madison have a website, and every site uses HTTPS, works on mobile and has tap-to-call links. Reviews are deep, with a median of 601 and an average rating of 4.8. The gaps are in newer items like llms.txt.
The top 15 hvac and plumbing on Google, measured
- 100%have a website
- 80%of sites use LocalBusiness markup
- 33%of sites publish llms.txt
- 87%of sites run Google Analytics or Tag Manager
- 4.8★average Google rating
- 601median Google reviews
15 businesses from the Google results for “HVAC and plumbing company in Madison, WI”. 15 list a website; we checked the homepage of the 15 that loaded.
Who ChatGPT recommends
“Who is the best HVAC or plumbing company in Madison, WI?”
- Harker Heating & Cooling
- All Comfort Services
- Avid Plumbing LLC
- Dave Jones, LLC
- Monona Plumbing & Fire Protection
4 of the 15 businesses in the Google results were named. 1 recommendation was for businesses outside that list.
The review leaders
| Business | Rating | Reviews | Named by ChatGPT |
|---|---|---|---|
| Cardinal Heating, Cooling, Plumbing & Electric | 4.9 | 5464 | No |
| All Comfort Services | 4.8 | 3789 | Yes |
| Harker Heating & Cooling | 4.9 | 2117 | Yes |
| Dave Jones, LLC | 4.9 | 2035 | Yes |
| RG Heating Cooling Plumbing | 4.9 | 1968 | No |
What this means for your shop
Only 80% of local sites have LocalBusiness schema, so adding it moves you ahead of the rest of this market.
Just 33% of sites have an llms.txt file and 0% block AI crawlers, so this is an open lane for you.
Cardinal Heating, Cooling, Plumbing & Electric has 5464 reviews but was not named by ChatGPT, while All Comfort Services, with 3789, was.
HVAC and plumbing in Madison: questions
How do I get recommended by ChatGPT in Madison?
We asked ChatGPT who the best HVAC or plumbing company in Madison, WI is. It named Harker Heating & Cooling, All Comfort Services, Avid Plumbing LLC, Dave Jones, LLC and Monona Plumbing & Fire Protection. Our data does not show what drives a mention.
How many reviews do the Madison leaders have?
Cardinal Heating, Cooling, Plumbing & Electric leads with 5464 reviews at 4.9. All Comfort Services has 3789, Harker Heating & Cooling has 2117, Dave Jones, LLC has 2035 and RG Heating Cooling Plumbing has 1968.
What are most local sites missing?
The biggest gap is llms.txt, which only 33% of sites have. Analytics is on 87% of sites and LocalBusiness schema is on 80%. HTTPS, mobile and tap-to-call are already 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.
Method: HopperCat pulled the top Google results for “HVAC and plumbing company in Madison, WI” on November 8, 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.