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Duct Sizing Nasıl Hesaplanır?

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HVAC Duct Sizing Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Formül

Duct Area = CFM / (FPM velocity) where FPM = 700-900 for mains

Adım Adım Kılavuz

  1. 1Calculate required CFM per room, size duct for target velocity
  2. 2Apply the formula using your project measurements
  3. 3Add required safety factors or waste allowances per code

Çözümlü Örnekler

Giriş
400 CFM, 800 FPM target
Sonuç
Area = 400/800 = 0.5 sf → 8×9 inch duct

Kaçınılması Gereken Yaygın Hatalar

  • Not applying code-required safety factors or derating
  • Forgetting to account for waste and cut losses in material estimates

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Ayarlar

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