3 ms·
It is not just the energy usage but also the refrigerants used. Most common refrigerants used in AC systems are pretty bad GHG'es themselves, often 2,000x worse
by vel0city 2y ago
It is not just the energy usage but also the refrigerants used. Most common refrigerants used in AC systems are pretty bad GHG'es themselves, often 2,000x worse than CO2.
Are many small portable AC units these days running 1234yf yet?
- datadrivenangel 2y agoCan't you get R744 (CO2) AC systems these days?
- vel0city 2y agoI've yet to see many small portable ac units running R744 at least in the US. It requires really high pressures to run well.
- kamilner 2y agoI'm pretty sure most portable ACs sold in Europe these days are R290 (propane) which has a GWP of about 1/14th of CO2, so for those that's no longer much of a concern.
- vel0city 2y agoR290 has a GWP of 3.3, so that's 3.3x worse than CO2 with a GOP of 1. Which makes sense, because when propane breaks down it usually breaks down to CO2. Thanks for sharing that portable AC's in Europe are R290, I don't think that's super common in the US. But I'm open to being shown wrong on that!
- SkyPuncher 2y agoThis is not true anymore. Most systems are switching to less dangerous refrigerants.