Mr. Rooter is more visible in AI search across this prompt set, by 2 citations.
The finding in one paragraph
Service-area businesses (plumbing, HVAC, electrical) compete for the moment a customer types an emergency search into Google or, increasingly, an AI assistant. We tested 5 standardized buyer questions a homeowner or facility manager might plausibly ask. Each question ran 3 times per engine across 4 engines. The result, per-engine breakdown, and per-prompt comparison are below.
Per-engine breakdown
| Engine | Roto-Rooter | Mr. Rooter | Edge |
|---|---|---|---|
| ChatGPT | 12 / 15 | 6 / 15 | Roto-Rooter by 6 |
| Claude | 3 / 15 | 9 / 15 | Mr. Rooter by 6 |
| Gemini | 0 / 15 | 3 / 15 | Mr. Rooter by 3 |
| Perplexity | 6 / 15 | 5 / 15 | Roto-Rooter by 1 |
Per-prompt comparison
Each prompt was asked 12 times (4 engines × 3 trials). The cells show how often each brand showed up in those 12 responses.
| Buyer prompt | Roto-Rooter | Mr. Rooter |
|---|---|---|
| Who is the best national plumbing service for emergency repairs in the United States? | 7 / 12 | 6 / 12 |
| What national plumbing franchise has the most US coverage and 24-hour availability? | 4 / 12 | 7 / 12 |
| Which plumbing service provides the fastest emergency response for residential customers? | 2 / 12 | 5 / 12 |
| What are the top national plumbing service companies for commercial buildings? | 4 / 12 | 5 / 12 |
| Who should a homeowner call for an emergency clogged drain or backed-up sewer line? | 4 / 12 | 0 / 12 |
Methodology
Identical to the Web Cited AI Visibility Index methodology. Replicable by anyone with API access to the four engines.
Anthropic Claude (claude-haiku-4-5-20251001)
Google Gemini (gemini-2.5-flash-lite)
Perplexity (sonar)
max_tokens 800
N = 3 trials per (engine, prompt)
The 5 standardized buyer prompts
- Who is the best national plumbing service for emergency repairs in the United States?
- What national plumbing franchise has the most US coverage and 24-hour availability?
- Which plumbing service provides the fastest emergency response for residential customers?
- What are the top national plumbing service companies for commercial buildings?
- Who should a homeowner call for an emergency clogged drain or backed-up sewer line?
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