Airflow CFM Calc HVAC
4 Methods Cross-Check
$0.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
Airflow CFM Calc HVAC - professional NEC calculator for electricians. Offline, permit-ready.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new:
- Updated metadata for clarity per App Store guidelines
- Optional Pro upgrade is a separate one-time in-app purchase (not required for calculator features)
The developer, Rizvan Adzhoian, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Rizvan Adzhoian
- Size
- 31 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Contains
Advertising
- In-App Purchases
Yes
- Pro Unlock $2.99
- Copyright
- © 2026 Rizvan Adzhoian