In the us market there is a new standard for evaluating efficiencies seer2 and hspf2. The minimum standards are only 1.3 seer higher than the old standards. In that sense it’s a bit sensationalized.
The article touched on the upcoming change in the US market to switch to lower global warming potential refrigerants. The new ones are about a fifth lower.
These might be coming from Europe as the us is still transitioning. Additionally the old refrigerants are not barred from being manufactured and will be continued to be used to maintain older systems. Again this is somewhat sensationalized.
We already created the equipment and ‘spent’ carbon emissions to manufacturer these. It would be a waste to throw it away.
Certainly, the equipment might become unusable, but rather than disposing of it, they are repurposing it elsewhere. Considering the environmental impact, whether the efficiencies and lower global warming potential (GWP) outweigh the benefits of discarding an already manufactured system, which would necessitate manufacturing anew for compliance, is uncertain.
I would estimate payback period to align with a lifespan of around 10 years, matching the expected duration of some of these systems. This estimate entirely anecdotal.