
Easy-to-use Hydraulic Calculation & Design Tools
Quickly design any system, calculate with industry-leading accuracy, save system build costs, and prepare easy to understand reports.
Accuracy you can trust since 1976
Who is HASS for?
Have the most accurate calculations and now integrate with AutoCAD®.
Industry-leading accuracy
Easier to read calculations
Faster data entry
Conveniently import and export AutoCAD® drawings
Calculate without drafting

Built for Your Business
Calculate with industry-leading accuracy, prepare
easy to understand reports, and confidently submit
your designs for faster approval.
Conveniently import and export AutoCAD® drawings to calculate, optimize, and report your system designs.
Rapidly input system data and automate your workflow to make your work faster, easier, and complete more jobs.
Quickly optimize your system with intelligent system design tools and significantly reduce your costs.
HASS now supports FDS Modeling
We're delighted to announce we have partnered with Thunderhead Engineering to provide HASS integration with the world's leading fire modeling software solution, PyroSim.
HASS also exports FDS files to use with any fire modeling solution.


HASS
Trusted in fire protection throughout the world




