If you find the broken AC hose is the hose from air conditioning evaporator to compressor. It is the suction AC hose, the hose size is #10, 1/2 inch as the inner diameter. It is the bigger hose in the whole car air conditioning system

Replacing a power steering hose in a Ford Focus can vary in complexity depending on the specific model and year of the vehicle. In some cases, it may be a relatively straightforward DIY job for those with the necessary tools and mechanical skills. However, in other cases, it may be best left to a professional mechanic to ensure the job is done correctly and safely.