CO2 Heat pumps have the lowest global warming potential relatively. They are mostly used in commercial environments due to the complexity and high pressures involved. In the resendential market, a few CO2 heat pumps exist, and more are beginning to emerge. At present, these heat pumps for residential are limited in power and availability.
| Manufacturer | Model | Heating Capacity Nominal (Max) KW | Info | |
|---|---|---|---|---|
| Chofu | EHPE-4550P | 4.5 (6) | Information | |
| Mitsubshi | QUHZ-W40VA | 4 (4.32) | - Mitsubishi QUHZ-W40VA Monoblock (Domestic). Information Sheet Data Sheet | |
| Mitsubishi | QAHV | (Light Commercial/ Commercial) | ||