It drives the cost of doing business up, and ufortunantley, we have to pass the cost onto the customers. R-404A (HP62- Low Temp) is the same as 134A( HFC)and it's regulated as well. How is the Puron sales going in your area. I wont use it, the applications seem way to high (pressures). R 22 for residential is still avaliable till 2020.Are you using any other replacements for 22?