How can extreme weather affect HVAC system performance?

Extreme weather can significantly impact HVAC system performance, leading to increased stress and potential failures. When temperatures reach extreme highs or lows, HVAC systems must work harder to maintain a comfortable indoor environment. This increased demand can strain components such as compressors, motors, and fans, potentially leading to overheating or mechanical failure.

Additionally, fluctuations in humidity levels often associated with severe weather can affect the efficiency of the system as it tries to dehumidify or humidify the air to specified levels. Prolonged exposure to extreme conditions can lead to accelerated wear and tear on equipment, reducing its lifespan and effectiveness. It's essential for HVAC systems to be properly maintained and calibrated to handle varying weather conditions to minimize these risks.

In contrast, the other options suggest improvements in efficiency or no effect at all, which does not accurately reflect the challenges HVAC systems face during extreme weather.