I'm getting a 13 seer 2 1/2 ton Trane AC. I've had 2 quotes so far and 2 completly different views on the refrig issue. While I know 22r is being phased out eventually, dealer 1 told me to definetly go for the 410a because 22r prices will skyrocket someday and/or become hard to obtain. Dealer 2 told me that he's seen a bunch of the AC units that use 410a (brand doesn't matter) lose the 410a coolant in only a few years....he mentioned the pressure is somewhere in the 400lbs to 500lbs (per sq in I think) vs pressure of 65-175 for the 22r units....I may be a little off on the exact pressure, but it was a substantial difference. The bottom line is he thought the design of the 410a's just aren't perfected to hold the coolant properly at this point in the game.
Any truth to this? Would like to hear views on the 22r vs 410a on the issue of system design and future coolant availability/price.
I can say from my own experience, I have an 18+ 2 ton Trane AC that runs 22r and have never had to fill/top it off....still cools the house nicely.