ChekDuct vs Pump Mate

Struggling to read your ductulator? Chekduct is a straightforward, reliable duct calculator built specifically for HVAC installers, service techs, and sheet metal fabricators who need info quick. Whether you’re troubleshooting an airflow issue on a service call or sizing duct for a new install, Chekduct handles the math so you don't have to

Pump Mate is a professional hydraulic calculator for engineers, designers, and field technicians who size and analyze centrifugal pumps. Run a quick power estimate in seconds, or use Advanced Mode for a complete hydraulic analysis—all offline, with metric (SI) and imperial units. CALCULATE WITH CONFIDENCE • Quick Mode: hydraulic power and motor sizing from flow and head. • Advanced Mode: Total Dynamic Head (TDH), NPSH available, pipe and fitting losses, efficiencies, and system-curve inputs. • Fluid support: water and engineering fluid properties, plus Pro slurry-hydraulics tools. • Projects and history: save, organize, and revisit calculations by job. • Pump measurement (Pro): calculate pump differential head and NPSHa from measured pressures at a declared reference plane. Save the result to a Project Pump and export a traceable PDF report. SELECT AND REVIEW PUMPS • Browse an offline pump-curve catalogue with visible data provenance. • Match curves to an Advanced Mode duty point. • Apply published impeller and stage variants where available. • Pump Mate Pro Selection Assistant screens POR position, efficiency, absorbed power, NPSH margin, and tip speed at the duty point. • Compare curves and inspect H-Q, efficiency, power, and NPSHr behavior. PROFESSIONAL REPORTING • Export Quick and Advanced calculations as structured PDF reports. • Advanced reports can include calculation context, hydraulic tables, selection results, and charts. • Add report identity and branding details for clearer project handoff. BUILT FOR FIELD WORK • Offline-first for plants, jobsites, and low-connectivity locations. • Metric and imperial units. • English, Spanish, French, and Portuguese interface. • Light and dark themes. • Built-in pumping fundamentals and rendered equations. • Clean, ad-free experience. PUMP MATE PRO Pump Mate Pro is an optional one-time purchase that unlocks the expanded curve library, Selection Assistant verdicts, pump comparison, professional PDF capabilities, slurry analysis, unlimited projects, and unlimited calculation history. The core hydraulic calculators remain free. Pump Mate supports engineering judgment; always verify results, source data, equipment limits, and manufacturer documentation before final selection or installation.