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HVAC Calc – Duct & Airflow

HVAC Calc – Duct & Airflow

Duct sizing • friction • PDF

2 ratings
2 reviews
🔧 Utilities
📊 Productivity

Archived App (Last seen on 17 Mar 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • August 20, 2025
  • September 16, 2025

Features

Developer

NURDAN ARI
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About

This app provides essential HVAC calculations for duct sizing, airflow, and friction loss directly on your mobile device. It offers offline functionality, unit conversions, and PDF report generation for professionals and students.

✓Instant duct sizing
✓Airflow and velocity calculation
✓Friction loss calculation
✓Rectangular to circular duct conversion
✓SI and Imperial unit toggle
✓Offline functionality
✓PDF report generator
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What's New in HVAC Calc

1.0.4

September 16, 2025

Air Duct Calc is your all-in-one HVAC toolkit, designed to give you instant answers without an internet connection. Fixed Pdf Export.

User reviews

Most RecentHighest RatedLowest Rated

Excellent HVAC Tool for On-Site Use

I’m really impressed with HVAC Calc – Duct & Airflow—a true field-ready app for engineers and technicians. The duct sizing tool is spot-on: just input your airflow and velocity, and it instantly gives you both circular and rectangular dimensions. The airflow and friction loss calculators (using Darcy-Weisbach formula) are fast and accurate—even if you’re working completely offline on the job site. Love the PDF report generator for sharing neat, professional summaries. Compact, reliable, and highly recommended for anyone needing quick HVAC calculations.
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FAQ

Does HVAC Calc have ads?

No, HVAC Calc is completely ad-free, allowing for an uninterrupted user experience during critical on-site calculations.

How often is HVAC Calc updated?

HVAC Calc was last updated on September 16, 2025, with version 1.0.4. This indicates a commitment to ongoing improvements and bug fixes.

What devices support HVAC Calc?

Currently, HVAC Calc is supported on iPhones. Future updates may expand compatibility to other devices.

Is HVAC Calc suitable for beginners?

Yes, HVAC Calc is designed to simplify complex charts and formulas, making it accessible for students and technicians new to HVAC calculations.

Can I use HVAC Calc without an internet connection?

Absolutely. HVAC Calc offers 100% offline functionality, making it ideal for use in basements, new constructions, or any location with limited or no signal.

What is the age rating for HVAC Calc?

HVAC Calc has an age rating of 17+, suggesting it contains content or complexity suitable for mature users, likely due to its technical nature.

How does HVAC Calc handle unit conversions?

HVAC Calc allows for instant switching between SI and Imperial units on the fly, ensuring flexibility for users working with different measurement systems.

What kind of reports can HVAC Calc generate?

HVAC Calc can generate professional PDF reports of your calculations, which can be quickly created and shared directly from the app.