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Is it Bad to Set My AC Fan to Auto?

A/C unit behind a house in Rialto, CA

Setting your A/C fan to an automatic setting versus leaving it on can impact your comfort, energy usage, and system efficiency. At A/C King Inc., we aim to help our customers make informed decisions about their HVAC settings.

Reduce Energy Consumption

When you set your A/C fan to auto, the fan operates only when the cooling or heating system is actively running. This can help reduce energy consumption and maintain consistent temperatures throughout your home or business. In addition, running the fan continuously can lead to increased wear and tear on the sensitive components of the system.


However, there are situations where setting the fan to auto may not be ideal. In high-humidity climates, running the fan continuously can help improve air circulation and reduce moisture levels. It can also help filter out airborne pollutants and allergens, improving indoor air quality.

The most ideal setting for your A/C fan depends on your specific needs and preferences. If you’re unsure which setting is right for you, consult with the experts at A/C King Inc. by calling (909) 324-3872 or clicking here to get started. We’ll assess your HVAC system and provide personalized recommendations to ensure optimal comfort and efficiency.