Cornell Pump Toolkit vs Airflow CFM Calc HVAC

Cornell Pump Toolkit The right mobile app to answer your questions about centrifugal pumps! This mobile app can be used to calculate: · Total Dynamic Head · Net Positive Suction Head · Friction Loss · And, save and share your calculations Plus, suggest pumps from Cornell’s robust and efficient catalog to meet your system needs. Cornell Pump Toolkit can be used on Apple devices—allowing functionality without needing to be connected to the internet. The application is free—ideal for use by project managers, engineers, operators, mechanics, and distributors in agricultural, industrial, municipal, mining, and rental applications. Please Note: Cornell Toolkit is used as an approximating tool for pumps and systems. While the Cornell Toolkit has been examined by Cornell staff, including professional engineers, and found to be accurate, Cornell offers more detailed and precise calculations through tools available on our website. Cornell Toolkit is a quick check for in field operations, and narrowing pump selections. Calculations are made assuming 60 degree Fahrenheit water; water at significantly different temperatures or liquids with different specific gravity may yield substantially divergent results. Piping friction loss is calculated using Hazen-Williams hydraulic equations—as the diameter of pipes get smaller than 3” or larger than 12” there is less accuracy in the calculation that is not corrected by the toolkit. Care should be used in comparing smaller or larger piping with the toolkit.

HVAC Airflow CFM Calculator helps HVAC technicians, engineers, and contractors calculate cubic feet per minute (CFM) airflow with four methods for cross-checking and verification. This air conditioning calculator eliminates guesswork in ductwork design and system diagnostics. CALCULATION METHODS: Temperature Delta Method - CFM from BTU load and supply/return temperature difference Duct Velocity Method - CFM from duct size (round or rectangular) and air velocity (FPM) Sensible Heat Method - CFM from sensible cooling/heating capacity and temperature delta Total Heat Method - CFM from total heat load and enthalpy difference CORE FEATURES: Round & Rectangular Duct Support - Both duct shapes in velocity calculations Cross-Check Verification - Use multiple CFM methods to validate calculations Instant Results - Airflow, velocity, and duct area displayed in real-time 100% Offline Operation - No internet connection required for field calculations English & Spanish Support - Bilingual interface for diverse crews OPTIONAL PRO UPGRADE — $2.99 ONE-TIME IN-APP PURCHASE The following features require a separate one-time in-app purchase. They are not required to use the calculator: • Unlimited saved calculation history • PDF export of results • Dark theme • Ad-free experience WHY HVAC TECHNICIANS CHOOSE THIS APP: Faster load calculations during service calls and installations Accurate CFM verification for system balance and air quality Quick cross-check methods prevent installation errors Works offline on job sites without cellular coverage Replaces bulky slide rules and reference charts PERFECT FOR: HVAC technicians on air conditioning service calls HVAC field technicians performing system diagnostics HVAC apprentices learning proper calculation methods AC contractors bidding residential and commercial work Building maintenance engineers commissioning systems HVAC students preparing for EPA 608 certification Part of HVACTools Suite - the professional HVAC technician app collection for field calculations and refrigeration diagnostics.