AI Share of Voice Rankings
Averaged across all 3 queries. Sentiment reflects the most positive framing seen per provider across queries.
| # | Brand | Avg AI SoV | Gemini | Claude | ChatGPT | Perplexity |
|---|---|---|---|---|---|---|
| 1 | Vaillant | 92% | ✓Recommended | ✓Recommended | ✓Recommended | ✓Recommended |
| 2 | Daikin | 75% | ✓Recommended | ✓Recommended | ✓Recommended | ✓Recommended |
| 3 | Samsung | 67% | ✓Recommended | ✓Recommended | ✓Recommended | ·Mentioned |
| 4 | Mitsubishi Electric | 58% | ✓Recommended | ✓Recommended | ✓Recommended | ✓Recommended |
| 5 | Grant UK | 58% | ✓Recommended | —Not mentioned | ✓Recommended | —Not mentioned |
| 6 | Octopus Energy | 50% | ✓Recommended | ✓Recommended | ✓Recommended | ✓Recommended |
| 7 | Worcester Bosch | 0% | —Not mentioned | —Not mentioned | —Not mentioned | —Not mentioned |
| 8 | Kensa | 0% | —Not mentioned | —Not mentioned | —Not mentioned | —Not mentioned |
✓Recommended·Mentioned⚠With caveats—Not mentioned
Queries asked to each AI model
We sent these exact questions to Gemini, Claude, ChatGPT, Perplexity — no brand context included, so responses are unbiased.
- 1“What are the best heat pump installers in the UK?”
- 2“Which heat pump brand should I choose for my UK home?”
- 3“What is the best air source heat pump available in the UK?”
Per-provider breakdown
How each AI model ranked brands individually.
Gemini
Recommended
VaillantDaikinSamsungMitsubishi ElectricGrant UKOctopus Energy
Claude
Recommended
VaillantDaikinSamsungMitsubishi ElectricOctopus Energy
ChatGPT
Recommended
VaillantDaikinSamsungMitsubishi ElectricGrant UKOctopus Energy
Perplexity
Recommended
VaillantDaikinMitsubishi ElectricOctopus Energy
Mentioned
Samsung
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All months
September 2026