# SMACNA HVAC DCS — Duct Construction App

> SMACNA compliant rectangular duct construction design and specification tool. (iPhone/iPad app by SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC..)

- Source: https://appshunter.io/ios/app/smacna-hvac-dcs/id716751022 (this page in markdown: same URL + `.md`)
- Developer: [SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.](https://appshunter.io/developer/427624079)
- Category: Business
- Price: $12.99
- Rating: 2.17/5 from 6 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 19 MB
- Languages: English
- Released: 2013-10-22
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/smacna-hvac-dcs/id716751022/reviews.md

## What is SMACNA HVAC DCS?

This app will provide SMACNA compliant options for rectangular duct with dimensions from 1 inch to 120 inches for applications from negative to positive ten inch water gage.

The scenarios for the app are limited to joint lengths of 4, 5, and 6 feet.  The transverse connections are limited to T1 (flat drive), T5 (flat slip), T10, 11, and 12 (standing slips) and T25 a or b (TDC/TDF).  Where appropriate the app will also provide options for intermediate reinforcement.  The full range of reinforcement spacing options is 6, 5, 4, 3, 2 ½, and 2 feet.

In most cases the app will provide options for internal reinforcements and external reinforcements.  Internal options are limited to EMT conduit tie rods and external reinforcements are limited to angles.  Enough information is provided so users can choose other options from SMACNA’s Standard.

The output of the app is a written description of the duct as well as a graphic representation.  Users can view the report on-screen or email it.

The app does not provide every possible solution found in SMACNA’s standard and it will not provide every detail.  For example, the app does not provide requirements for the proper attachment of the reinforcements.  The app is intended to be used in conjunction with SMACNA’s HVAC Duct Construction Standard.

## Key features

- Rectangular duct dimensions 1-120 inches
- Supports various water gage applications
- Options for joint lengths and transverse connections
- Internal and external reinforcement choices
- Generates written and graphic duct reports
- Emailable report output

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/smacna-hvac-dcs/id716751022/reviews.md

### 1/5 — Worthless!!!!

*2022-04-06, version 3.1*

Does nothing! No matter the specs you get ‘design not available’. Apple should be ashamed for allowing this app out in the store.

### 1/5 — iOS 11 update

*2017-09-28, version 3.0*

Need update

### 1/5 — Not as advertised

*2016-02-26, version 3.0*

Do not buy. This app is not useful at all. Doesn't work as described.

## Frequently asked questions about SMACNA HVAC DCS

### What is SMACNA HVAC DCS?

SMACNA HVAC DCS is a business application designed to provide SMACNA compliant options for rectangular duct construction. It helps users specify dimensions, joint lengths, and reinforcement types for HVAC duct systems.

### What are the supported duct dimensions in SMACNA HVAC DCS?

The app supports rectangular ducts with dimensions ranging from 1 inch to 120 inches. It also accommodates applications from negative to positive ten inch water gage.

### What types of transverse connections does SMACNA HVAC DCS support?

SMACNA HVAC DCS supports several transverse connections including T1 (flat drive), T5 (flat slip), T10, T11, T12 (standing slips), and T25 a or b (TDC/TDF).

### Can I get reinforcement options with SMACNA HVAC DCS?

Yes, the app provides options for intermediate reinforcement with spacing options of 6, 5, 4, 3, 2 ½, and 2 feet. It also offers choices for internal reinforcements like EMT conduit tie rods and external reinforcements like angles.

### What kind of output does SMACNA HVAC DCS provide?

The app generates a written description of the duct along with a graphic representation. Users can view this report on-screen or email it for further use.

### Is SMACNA HVAC DCS a complete replacement for the SMACNA standard?

No, the app does not provide every possible solution or detail found in SMACNA’s standard. It is intended to be used in conjunction with SMACNA’s HVAC Duct Construction Standard.

### What devices is SMACNA HVAC DCS available on?

SMACNA HVAC DCS is available on iPhone, iPad, and iPod devices. It is compatible with iOS devices.

### How often is SMACNA HVAC DCS updated?

The latest version of SMACNA HVAC DCS is 3.1, which was last updated on June 4, 2018. The app was initially released on October 22, 2013.

## Version history (last 1 release)

### 3.1 — 2018-06-04

This app has been updated by Apple to display the Apple Watch app icon.

- Enhance User interface.
- Fix minor bugs.
- Improve performance .
- Support iPhone as well as iPad.

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## More apps by SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.

- [DALC](https://appshunter.io/ios/app/dalc/id427624076)
- [SMACNA Event](https://appshunter.io/ios/app/smacna-event/id1643514408)
- [SMACNA Events](https://appshunter.io/ios/app/smacna-events/id6670240458)
- [SMACNA Duct-U-Lator](https://appshunter.io/ios/app/smacna-duct-u-lator/id6702024229)

All apps by SHEET METAL CONTRACTORS NATIONAL ASSOCIATION, INC.: https://appshunter.io/developer/427624079

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*