This is a 1.0 horsepower, non-inverter type air conditioner from Sharp. It uses R32 refrigerant, which is known for being more environmentally friendly than some older refrigerants. The model numbers AHA9WCD2 / AUA9WCD2 and AHA9XCD / AUA9XCD likely refer to the indoor and outdoor units, respectively, representing slight variations or production batches of the same basic model. Being a non-inverter model, it will likely operate at a constant speed, cycling on and off to maintain the set temperature, potentially consuming more energy than inverter models.