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How often should the air filters in an office building's HVAC system be replaced or cleaned?

Texas ACR A exam practice question · HVAC Systems

How often should the air filters in an office building's HVAC system be replaced or cleaned?

  • Every 3 months
  • BEvery 6 months
  • CEvery 12 months
  • DEvery 18 months

Exam tip

Regular maintenance is key to ensuring good indoor air quality and efficient operation of HVAC systems.

Why A is correct

The correct answer is every 3 months, as recommended in the ACCA Manual D. Regular filter maintenance is crucial for maintaining air quality and system efficiency. The other options are less frequent and may not maintain optimal air quality.

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