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If you have any questions regarding the terms of use, please contact us via the following contact form:

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CalcuDUCT is provided for your use free-of-charge. Please note that by accessing and using the calcuDUCT website (“calcuDUCT”), you accept without limitation or qualification, the following terms of use.

  1. The calcuDUCT website is intended to provide design assistance only. It is not intended to be comprehensive nor does it constitute an approved design.

  2. CalcuDUCT is a tool that can be used to estimate the velocity and pressure drop of air in circular or rectangular ducts. CalcuDUCT is intended to assist HVAC engineers and designers (“the designer”) with duct sizing for HVAC applications. It is the sole responsibility of the designer to verify the results of calcuDUCT and select the appropriate duct size for the specific application. Unqualified persons should seek other professional advice before acting on, or relying on any of the content of calcuDUCT.

  3. All works, content and calculations on this website, including without limitation, all text, information, design, graphics, images and code are the exclusive property of calcuDUCT and are protected by copyright law.

  4. Although all endeavours have been made to provide accurate calculations, the creator of calcuDUCT takes no responsibility for the accuracy of the results.

  5. Before using the results, the user should verify against another reliable method.

  6. CalcuDUCT reserves the right to make changes to the website without notice.

  7. For rectangular ducts with an aspect ratio greater than 5:1 the results of calcuDUCT will not be reliable. Keep duct aspect ratio within these constraints as per good design practice.

  8. This website contains links to other sites. CalcuDUCT makes no representation or warranty as to the accuracy or any other aspect of the information on those linked sites. No link to another site should be construed as an endorsement or recommendation of information, goods or services referred to.

  9. These terms of use may be changed at any time at calcuDUCT’s sole discretion and without notice.

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