Data as of Aug 25, 2026 · Based on 1,755 AI responses · See how Parse measures this
HVAC & Water Heating Solutions
Parse
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Carrier holds the top spot among HVAC brands recommended by AI assistants, maintaining its lead over close rivals and . However, the last six months have seen a significant rise from in both HVAC and water heater recommendations, while has emerged as a top contender, especially for commercial solutions.
| # | Brand | What AI says | Mention rate |
|---|---|---|---|
| 1 | A strong contender for both HVAC and water heaters, noted for reliability. | 32% | |
| 2 | An industry leader known for a wide range of reliable, energy-efficient systems. | 28% | |
| 3 | 27% | ||
| 4 | Recognized for high-efficiency, quiet systems with a focus on smart technology. | 25% | |
| 5 | A top recommendation for water heaters, known for quality and corrosion resistance. | 20% | |
| 6 | 17% | ||
| 7 | Plumber-preferred water heater brand, valued for its professional-grade quality and longevity. | 16% | |
| 8 | 15% | ||
| 9 | 10% | ||
| 10 | 10% | ||
| 11 | A leading choice for ductless mini-split systems and performance in cold climates. | 10% | |
| 12 | A fast-rising competitor, often recommended for its efficient VRF/VRV systems. | 8% | |
| 13 | 7% | ||
| 14 | 6% | ||
| 15 | 6% | ||
| 16 | 4% | ||
| 17 | 4% | ||
| 18 | 4% | ||
| 19 | 4% | ||
| 20 | 3% | ||
| 21 | 3% | ||
| 22 | 3% | ||
| 23 | 2% | ||
| 24 | 2% | ||
| 25 | 2% |
Who wins on each AI
The same market, seen by two models.
Sources AI cited
reddit.com is the page AI reaches for most here, cited in 27% of analyzed answers.
Rheem has climbed from rank #6 to #3 since October 2025, gaining mentions in both general HVAC and water heater prompts.
“Listed as one of several reliable water heater options.” → “Framed as the 'plumber-preferred' or professional-grade brand, sold exclusively through supply houses.”
Daikin emerged from unranked to a top-tier recommendation in late 2025, especially for commercial HVAC and VRF systems.
The Home Depot's ranking fell from #4 to #11 as AI increasingly recommended specialized online suppliers over big-box retailers.
| Brand | ChatGPT Search | Google AI Mode | Comparison |
|---|---|---|---|
| 23% | 30% | ||
| 19% | 28% | ||
| 19% | 19% | ||
| 19% | 24% | ||
| 19% | 16% |
The two models disagree most about AAON (ChatGPT #9, Google #18) and Johnson Controls (ChatGPT #13, Google #20).
Carrier holds the top spot among HVAC brands recommended by AI assistants, maintaining its lead over close rivals Trane and Lennox. However, the last six months have seen a significant rise from Rheem in both HVAC and water heater recommendations, while Daikin has emerged as a top contender, especially for commercial solutions.
Across 1,755 AI responses, Rheem is mentioned most, named in 32% of them, followed by Carrier (28%) and Trane Technologies (27%).
Parse measures each brand's mention rate — the share of answers naming it — across 1,755 AI responses to this market's buyer questions. Answers are collected daily and the ranking is published weekly.
Brands enter the ranking when AI answers mention them. Parse collects answers daily and publishes the re-measured set weekly, so new brands appear as AI starts recommending them.
AI answers consistently recommend top-tier brands like Carrier,
Trane, and
Lennox for their reliability. Throughout the observation period, other brands like
Daikin,
Rheem, and Goodman gained prominence in recommendations. Early ChatGPT responses from October 2025 sometimes suggested local contractors, but this became less common by 2026, with responses focusing more on manufacturer brands.
which HVAC companies should I consider?
AI answers consistently recommend top-tier brands like Carrier,
Trane, and
Lennox for their reliability. Throughout the observation period, other brands like
, , and Goodman gained prominence in recommendations. Early ChatGPT responses from October 2025 sometimes suggested local contractors, but this became less common by 2026, with responses focusing more on manufacturer brands.
Responses to this prompt show a strong and stable consensus, consistently naming Bradford White, , and as the top three choices for tank-style heaters. Both ChatGPT and Google AI Overviews highlight and as top picks for tankless models. The framing of as a 'professional-only' brand became more pronounced after November 2025.
Brands mentioned
What is the best water heater brand for a plumber to recommend for reliability and longevity?
Responses to this prompt show a strong and stable consensus, consistently naming Bradford White,
A. O. Smith, and
Rheem as the top three choices for tank-style heaters. Both ChatGPT and Google AI Overviews highlight
Navien and
Rinnai as top picks for tankless models. The framing of
Bradford White as a 'professional-only' brand became more pronounced after November 2025.
The market map