The legacy Rheem 22V50F1 model can still be purchased new on Amazon from Katy Water Heaters, an Amazon marketplace retailer, as of Februrary 2015. According to the manufacturer's website, the Fury and Warrior product lines, including all 22V50F water heaters, were reclassified as part of the Professional Classic Series.
The reclassified Rheem 22V50F models can be purchased at Younits under the Rheem Professional Classic Series designation. The three models which carried the 22V50F model number were the 22V50F1, 22V50FN and the 22V50T. Each of these legacy models has been replaced by a corresponding Professional Classic Series model that offers comparable performance and price, according to the data listed on the manufacturer's website. However, some of the energy ratings, emissions, and capacities have changed under the new product line.
The 22V50F1 (Fury line tall 50 gallon) has been replaced by the PROG50-50N RH58 and maintains all of the same specifications, including emissions and energy efficiency rating. The 22V50FN (Fury line, low emission, tall, 48 gallon) has been replaced by the PROG50-50N RH58, but it no longer features low emission and has a 50 gallon capacity. The 22V50FT (Warrior line tall 50 gallon) has been replaced by the PROE50 1 RH91 MH and carries a higher energy rating.