---
title: "HVAC Duct Sizer — App Overview"
url: https://marlvel.ai/intel-report/utilities/hvac-duct-sizer
category: Utilities
developer: Carmel Software Corporation
platforms: ios, android
rating: 3.0 (44 ratings)
pricing: free
report_level: overview
generated: 2026-04-28
last_verified: "2026-04-28T09:37:55.716Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While highly regarded for its utility in the field, users report a recurring UI bug that prevents the screen from scrolling to reveal results after data entry.

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| Metric | Value |
|--------|-------|
| Category | Utilities |
| Rating | 3.0 ★ (44) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 7.3 |
| Latest Version (Android) | 1 |
| Developer | Carmel Software Corporation |

<!-- SECTION: Summary -->
## What is HVAC Duct Sizer?

HVAC Duct Sizer is a utility tool designed to perform duct sizing analysis using the constant friction method, serving as a digital alternative to the Trane Ductulator. It supports both iPhone and iPad, allowing professionals to calculate duct runs or ranges based on airflow requirements.

<!-- SECTION: Key Features -->
## Key Features

- **Constant Friction Sizing**: Calculates duct sizes for single runs or ranges using the industry-standard constant friction method.
- **Size by Airflow Mode**: Allows users to input total airflow in CFM or L/s to determine appropriate duct dimensions.
- **HVAC Equipment Locator**: Includes an integrated tool to help users locate specific HVAC equipment.
- **Universal Design**: Optimized for both iPhone and iPad with responsive screen scaling.

<!-- SECTION: Target Audience -->
## Who is it for?

HVAC professionals, technicians, and students who require a portable tool for field sales and service calls.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/hvac-duct-sizer/id317970395?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.Energy4You.DuctSizer&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/utilities/hvac-duct-sizer)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/utilities/hvac-duct-sizer).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*