Some local electric companies offer "bounty" programs where they pay you a small amount (or offer a bill credit) to pick up and recycle old, inefficient units. Who Buys Used Air Conditioners Near Me? A Complete Guide
If you are looking to sell a used air conditioner, several options exist depending on whether the unit is still functional or if you are looking to scrap it for parts and metal.
Local shops that sell used refrigerators and washers often buy functioning AC units to resell in their showrooms. Where to Sell Non-Working or Old Units (Scrap)
Even if your AC doesn't work, its components like copper coils and aluminum fins have significant value at metal recycling centers.
Services like HVAC Recycle or I Buy Scrap Recycling focus specifically on HVAC equipment and may handle the freon removal for you while still paying for the unit.