Frigidaire 12,000 BTU Wall Air Conditioner Repair/Parts

Frigidaire FRA124HT1 12,000 BTU Through-The-Wall Room Air Conditioner (115 Volts) for repair/parts. Purchased new in August 2016. Worked well since, but turned it on a few days ago and it’s not blowing cold air. Filter is clean and no other weird noises or responses. Could be as simple as Freon being needed or could be more like a compressor failure. If you’re handy and up for fixing it, it’s a good unit that is capable of cooling a large space. Pickup in Rockaway Park, Queens. No delivery or midpoint meetup. Picking up from an apartment with elevator in building. Will need a cart or wagon to wheel it out - unit is heavy.