3 ms·The CO2 heatpump needs more than 150 bar, like having a small OceanGate in your attic.by j-a-a-p 3y agoThe CO2 heatpump needs more than 150 bar, like having a small OceanGate in your attic.fsh 3y agoMore like having a medical oxygen or welding gas tank in your attic (except with a much less reactive gas).usrusr 3y agoOr like a convenience whipped cream dispenser. Quantity and geometry certainly makes one more volatile than the other, but the number alone isn't all that far out.