The A/C condenser basically absorbs heat from the vehicle's cab and dissipates it to provide cool air. The condenser cools the hot, high-pressure gas from the compressor and turns it back to its liquid form. The liquid is circulated back into the system so it can absorb the heat inside the vehicle. Another one of its important functions is to collect debris, oil, and excess trash coming from the compressor. This protects the other parts of the a/c system from being contaminated.