Which of the following statements regarding A/C condensers is true?

The statement that some condensers must be replaced if contaminated is true because A/C condensers are critical components in the automotive air conditioning system. They play an essential role in dissipating heat from the refrigerant after it has passed through the compressor.

When contaminants, such as dirt, debris, or moisture, enter the A/C system, they can accumulate in the condenser. If the contamination is severe, it may lead to reduced efficiency and cooling performance, or even cause failure of the entire A/C system. In such cases, it may not be possible to effectively flush or clean the condenser to restore it to proper operating condition. If flushing does not remove the contaminants or if the condenser is damaged, replacement becomes the only viable option to ensure the system operates at optimal performance.

The other statements do not accurately reflect the realities of A/C condenser maintenance and repair. Certain designs may allow for flushing, but not all condensers can be flushed effectively due to design constraints or contamination levels. Some condensers may not necessarily require replacement, but when contamination is critical and flushing fails, replacement is the only solution left for restoring A/C functionality.