Replacement condensers and air handlers for R22 equipment are not longer manufactured. R410A refrigerant is safer for the environment and is why the government requires its' use in all new A/C installations.
Why wait for the middle of a heatwave to be forced into hastily making that investment? Now is the time to get a quality, efficient and more environmentally friendly system installed. In many cases we can utilize duct work, supply and return registers and/or refrigerant lines to lower the installation cost.