ATTMA Tools

Fan Calibration Variable Calculator

The ATTMA Trade Association has developed the following Fan Calibration Variable tool to calculate fan calibration variables, particularly useful for new Retrotec Fans which use Polynomial variables.

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Fan Capacity Calculator

The ATTMA Trade Association has developed a Blower Door Fan Capacity Calculator to help ATTMA members calculate how many fans are required for Level 2 buildings.

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Technical Standards Comparison

A handy tool to compare the ATTMA standard to ISO 9972:2012 technical standard.

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The Air Tightness Testing & Measurement Association

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Tannery Road
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