Heat Pumps Supplier Landscape
A view of who is investing in heat pump system IP, and who files globally. For sales and BD teams selling into HVAC OEMs, utility programs, and residential and commercial installers: use the ranking to see where boiler incumbents, Asian consumer brands, and refrigeration specialists are concentrating R&D, and where that activity crosses borders.
Covers building and appliance heat pumps. Vehicle heat pumps are excluded.
Top 25 by international patent families
| # | Company | HQ | Intl families | Since 2018 | Since 2023 | Filing offices | Intl share |
|---|---|---|---|---|---|---|---|
| 1 | LG Electronics | South Korea | 75 | 118 | 25 | 10 | 64% |
| 2 | Vaillant | Germany | 55 | 95 | 30 | 9 | 58% |
| 3 | Stiebel Eltron | Germany | 50 | 79 | 44 | 9 | 63% |
| 4 | Viessmann | Germany | 41 | 66 | 25 | 9 | 62% |
| 5 | Mitsubishi Electric | Japan | 41 | 53 | 12 | 11 | 77% |
| 6 | Bosch | Germany | 34 | 93 | 49 | 9 | 37% |
| 7 | Carrier | United States | 30 | 37 | 12 | 5 | 81% |
| 8 | Haier | China | 24 | 309 | 145 | 6 | 8% |
| 9 | Midea | China | 22 | 180 | 101 | 5 | 12% |
| 10 | Daikin Industries | Japan | 21 | 28 | 10 | 13 | 75% |
| 11 | Rheem | United States | 18 | 34 | 17 | 10 | 53% |
| 12 | Panasonic | Japan | 17 | 36 | 13 | 10 | 47% |
| 13 | Samsung Electronics | South Korea | 17 | 29 | 21 | 6 | 59% |
| 14 | Gree Electric | China | 11 | 342 | 161 | 14 | 3% |
| 15 | Trane | United States | 11 | 19 | 9 | 4 | 58% |
| 16 | Tyco Fire and Security | Switzerland | 11 | 15 | 10 | 8 | 73% |
| 17 | Johnson Controls | United States | 11 | 14 | 7 | 8 | 79% |
| 18 | Daikin Europe | Belgium | 11 | 13 | 5 | 8 | 85% |
| 19 | Guangdong Midea Refrigeration Equipment | China | 10 | 202 | 133 | 3 | 5% |
| 20 | Exergyn | Ireland | 10 | 12 | 0 | 6 | 83% |
| 21 | Siemens Energy | Germany | 9 | 12 | 7 | 10 | 75% |
| 22 | Octopus Energy Heating | United Kingdom | 9 | 9 | 8 | 9 | 100% |
| 23 | Glen Dimplex Deutschland | Germany | 9 | 9 | 5 | 3 | 100% |
| 24 | Hefei Midea Heating and Ventilating Equipment | China | 8 | 51 | 31 | 5 | 16% |
| 25 | SK Innovation | South Korea | 8 | 14 | 14 | 7 | 57% |
Methodology
Patent families first filed in 2018 or later, matched on CPC or IPC codes. “International” means filed in two or more patent offices. Source is Google Patents Public Data via BigQuery.
Codes: CPC and IPC F25B30 (heat pump systems), excluding families that also carry vehicle HVAC codes under B60H.
Companies are merged across name variants (for example, several spelling and romanization variants of the same assignee are rolled up into one row). Universities and government research bodies are excluded, so the ranking reflects commercial filers.
Rankings reflect patent activity, not revenue. A heavy filer may be protecting a research program that has not shipped, and a low filer may still be a dominant supplier.
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