Don't take my word as the Divine Gospel on this one but when I was in school for HVAC this summer, I heard somewhere that the EPA wants to get rid of them within the next 5 years. Not sure, don't quote me.
The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....
You never know what the gov is going to do but I don't see how they can stop any manufacturer who wants to make a dry unit. All they need to do is label the unit for 422b or 417a or whatever HFC refrigerant is compatible with R22. I'm sure there's no law saying that manufacturers have to use 410a only as the new refrigerant.
An engineer designs what he would never work on.
A technician works on what he would never design.
Carrier put all of their eggs in the 410A (Puron) basket. Their corporate marketing decision. They completely missed the boat on what consumers wanted, especially in this pitiful economy...an inexpensive alternative to replacing their entire system resultant to losing a condensing unit, with that only alternative being all new R-410A equipment, and the additional labor to install it.
Of course, Carrier's competitors saw another opportunity, and cashed in on it. Carrier being who they are, rather than joining the party have tried to control the party....they have lobbied hard to have this overturned....to no avail.
They dry units will be available as long as there is a demand for them, just as replacement R-22 compressors will be available as long as there is a market for them.
Interesting article about this issue. Make no mistake about this...their stance is entirely driven by sales $$ and corporate pride.