ChatGPT Visibility Leaderboard · Updated 20 May 2026
Boiler Installation in London
- ranked by who ChatGPT actually recommends.
We asked ChatGPT three buyer-intent questions about boiler installation in London - the kind a real customer would type. Then we ranked every active GMB listing we could find by how visibly ChatGPT named them. 5 businesses audited.
The business taking your leads
Boiler Central
Named by ChatGPT for 5 out of 5 London boiler installation businesses we audited. They are not paying for ads. They are not necessarily the best business. They are the business ChatGPT's training has decided to recommend - which is the only thing that matters when a buyer asks AI for a recommendation now.
The 5-business ranking
Top of list = highest ChatGPT visibility right now. Below average = your competitors are getting the leads.
- #1Vaillant Boiler Service Experts Notting Hill★ 4.9 · 165 Google reviewsF
ChatGPT visibility
35/ 100Who ChatGPT named instead
Boiler CentralTaking your AI leads#1Vaillant Boiler Service Experts Notting Hill★ 4.9 · 165 Google reviews35/ 100FBoiler CentralTaking your AI leads - #2Hackney Heating★ 4.7 · 303 Google reviewsF
ChatGPT visibility
30/ 100Who ChatGPT named instead
Boiler CentralTaking your AI leads#2Hackney Heating★ 4.7 · 303 Google reviews30/ 100FBoiler CentralTaking your AI leads - #3Heat Knights★ 5.0 · 206 Google reviewsF
ChatGPT visibility
30/ 100Who ChatGPT named instead
Boiler CentralTaking your AI leads#3Heat Knights★ 5.0 · 206 Google reviews30/ 100FBoiler CentralTaking your AI leads - #4PlusHeat★ 4.5 · 2,749 Google reviewsF
ChatGPT visibility
30/ 100Who ChatGPT named instead
Boiler CentralTaking your AI leads#4PlusHeat★ 4.5 · 2,749 Google reviews30/ 100FBoiler CentralTaking your AI leads - #5London Plumbing Hobs★ 4.9 · 66 Google reviewsF
ChatGPT visibility
15/ 100Who ChatGPT named instead
Boiler CentralTaking your AI leads#5London Plumbing Hobs★ 4.9 · 66 Google reviews15/ 100FBoiler CentralTaking your AI leads
Is your business missing?
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We can audit any UK or US business in 60 seconds. If you're not on this list, you should be. If you are on this list and your ranking surprises you, here's where the fix starts.
Run your free audit →How the score works
ChatGPT visibility score
For each business we ran three buyer-intent queries against ChatGPT-4o: a discovery query, a comparison query, and a direct-name query. We graded each response on whether the business was named, where in the list, sentiment, and how prominently their competitors were positioned. The composite 0-100 score is the result.
Methodology details, sample ChatGPT responses, and a full per- business breakdown are available in the £99 visibility audit workbook.
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