| Subject | English | German |
| phys. | air heat pump | Luftwärmepumpe |
| construct. | air source heat pump | Luft/Luft-Wärmepumpe |
| tech. | air source heat pump | Luftwärmepumpe |
| energ.ind., mech.eng., tech. | air-air heat pump | Luft-Luft-Wärmepumpe |
| gen. | air-air heat pump | Luft/Luft-Wärmepumpe |
| mech.eng., el. | air-source heat pump | Luft-Luft-Waermepumpe |
| mech.eng., el. | air-to-air heat pump | Luft-Luft-Waermepumpe |
| energ.ind., mech.eng., tech. | air-to-air heat pump | Luft-Luft-Wärmepumpe |
| gen. | air-to-air heat pump | Luft/Luft-Wärmepumpe |
| mech.eng., el. | air-to-water heat pump | Luft-Wasser-Waermepumpe |
| gen. | air-to-water heat pump | Luft/Wasser-Wärmepumpe |
| energ.ind., mech.eng., tech. | air-water heat pump | Luft-Wasser-Wärmepumpe |
| energ.ind., mech.eng., tech. | earth-air heat pump | Erdreich-Luft-Wärmepumpe |
| energ.ind. | heat recovered by heat pump from extract air | Wärmeaufnahme der Wärmepumpe aus der Abluft |
| nat.sc. | reversible air-conditioning/heat pump system | kombiniertes Klimaanlagen-/Wärmepumpensystem |
| gen. | water to air heat pump | Wasser/Luft-Wärmepumpe |
| energ.ind., mech.eng., tech. | water-air-heat pump | Wasser-Luft-Wärmepumpe |
| mech.eng., el. | water-to-air heat pump | Wasser-Luft-Waermepumpe |
