Slide Rule Duct Sizing Multi Tool For HVAC CFM Calculator R32 R454B R410A R22 Includes Pressure Drop And Sizing For Metal And Flex Ducts Plus QR Code Access To 100 Free Tutorials And College Level Training For HVAC Pros
✔️ Single tool, duct sizing with CFM, pressure drop, QR tutorials
This slide rule style multi-tool helps HVAC professionals quickly size ducts, calculate airflow (CFM), and evaluate pressure drops for metal and flex duct installations. It's widely used in college labs, training centers, and on job sites.
✅ CFM calculator for Rectangular Metal, Round Metal, and Round Vinyl Flex Duct
✅ Pressure drop data and sizing for metal and flex ducts
✅ SuperHeat & SubCooling charging for R32, R454B, R410A, and R22
✅ Conversion for Smooth Metal to Insulation-Lined Metal and slide-rule functions
✅ OHM's Law Wheel, system diagnostics, and a full formula/conversion toolkit
💡 What is a duct sizing slide rule used for in HVAC work and how does it help technicians?
This handy tool makes quick, accurate duct sizing and airflow checks easier.
- Efficient CFM calculations for Rectangular Metal, Round Metal, and Round Vinyl Flex
- Pressure drop estimation to validate duct runs against design specs
- Built-in charts and conversions for Smooth Metal to Insulation-Lined Metal
- QR access to hundreds of tutorials for hands-on training