|
|
|
|
|
|
by chrislund
1547 days ago
|
|
|
They aren’t in all markets but there are heat pumps that use CO2 as the refrigerant that can make quite-high output water temps. They’re often used for domestic hot water. I haven’t looked too deeply in to them but IIRC they have COPs around 3–4. Sanden is one manufacturer, Mitsubishi and their Ecodan line is another. |
|
|