| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | heat pump | Scandinavia | Heat pumps are essential for efficient heating in cold climates, often replacing traditional fossil-fuel based heating systems. | 1 |
| 2 | heat pump | Scandinavia | Essential for heating homes during long, cold winters and less commonly used for cooling in summer | 1 |