How does coil fouling affect heat transfer and energy consumption, and what maintenance actions mitigate it?

How does coil fouling affect heat transfer and energy consumption, and what maintenance actions mitigate it?

• A. Fouling reduces heat transfer, increases pressure drop, and raises energy use; mitigate with regular cleaning, filtration, and chemical treatments if allowed
• B. Fouling improves heat transfer over time with proper cleaning
• C. Fouling has no impact on energy use
• D. Regularly increasing refrigerant charge mitigates fouling

Answer: (A)