VentTools is an independent collection of HVAC calculators and installation-reference tools designed around the measurements and decisions that arise on site.
VentTools converts published manufacturer information into clearer calculation steps, opening dimensions and practical installation notes. It also provides general ductwork calculators such as offset and square-to-round tools.
VentTools is not owned, approved or endorsed by any manufacturer shown on the website. Manufacturer names and product references are used only to help users select and verify the relevant published installation method.
Corrections and suggestions are welcome at info@venttools.com.