Version history
HVAC Duct Sizer
45
ASO score
Text
60/100
Reviews
0/100
Graphic
60/100
Other
0/100
App Rating
2.3
Votes
27
App Age
16y 7m
Last Update
Nov 30, 2025
iAP
$9.99 - 9.99
Compare with Category Top Apps
|
Metrics
|
Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
|
Rating
|
2.31
|
4.46
|
-48%
|
|
Number of Ratings (Voted)
|
27
|
474.2K
|
-100%
|
|
App Age
|
16y 6m
|
6y 2m
|
+169%
|
|
Price
|
$6
|
$0
|
|
|
In-app Purchases Price
|
$10
|
$34
|
-71
%
|
|
Update Frequency
|
84d
|
38d
|
+123%
|
|
Title Length
|
15
|
25
|
-40%
|
|
Subtitle Length
|
28
|
27
|
+4%
|
|
Description Length
|
3 405
|
2 559
|
+33%
|
|
Number of Screenshots
|
2691
|
1002
|
+169
%
|
|
Size
|
17MB
|
171MB
|
-90
%
|
Category Ranking in United States
7 days
Last 7 days
Last 30 days
Last 90 days
Last 180 days
Last year
| Top | Dec 15, 2025 | Dec 22, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 15, 2025 | Dec 22, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 15, 2025 | Dec 22, 2025 |
|---|---|---|
|
No results were found!
|
||
| Top | Dec 15, 2025 | Dec 22, 2025 |
|---|---|---|
|
No results were found!
|
||
Ranking Keywords in United States
| Keywords | App Rank |
|---|
Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
15
of 30
)
HVAC Duct Sizer
Subtitle
(
Characters:
28
of 30
)
HVAC duct sizing and more...
Description
(
Characters:
3405
of 4000
)
The HVAC Duct Sizer app is the #1 selling duct sizing application for the Apple iPhone and iPad. Tens of thousands of happy users have downloaded this useful application for performing quick and simple duct sizing analysis.
The HVAC Duct Sizer is a universal duct sizing app so that it works on both the iPhone and iPad and adjusts its screen size accordingly.
This app includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1BPl1Nr
Just a couple of comments from our users:
"I'll be presenting your iPhone program to my HVAC class as an easy compact tool to have in hand when making sales and service calls." - R. Black
"I like this app and use it daily" - V. Joe
The Duct Sizer application allows you to quickly size one HVAC duct run or a range of duct sizes using the constant friction method. Think of this application as a digital version of the classic Trane Ductulator.
In the "Size by Airflow" mode, you can specify the total airflow in CFM (or L/s), the aspect ratio and one of either the velocity of air or the friction loss per 100 feet (30 meters). The results include both the exact and rounded height and width (or diameter) dimensions and the calculated velocity and friction loss.
In the "Size by Dimensions" mode, you can analyze an existing duct system. There are options to input the existing duct dimensions and one of either the airflow or velocity values to derive the calculated duct friction loss.
In the "Range of Duct Sizes" mode, you can specify minimum and maximum friction loss and airflow values to display a range of duct sizes that fall in between the friction loss bounds.
You can specify additional parameters such as the duct shape (rectangular, round, or oval), the air temperature and the air pressure. You can also choose to display values in either English (IP) or Metric (SI) units.
This application uses slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results.
This app now works on your iPhone and iPad and adjusts its screen size accordingly.
Finally, you can email all of the inputs and results from all 3 input modes to perform further analysis using your desktop computer. The email includes HTML text and a .CSV attachment that can be imported into any popular spreadsheet.
The "HVAC Duct Sizer" application was designed by Carmel Software Corporation, a leader in HVAC design software since 1995. In fact, Autodesk (the makers of AutoCAD) acquired our load calculation software and incorporated it into their leading 3D modeling software called Revit. In addition, we developed a number of customized apps for ASHRAE, DNV GL, and other organizations.
This app now includes the HVAC Equipment Locator which allows you to keep track of all of your equipment and store it in the cloud. Click here for details: http://bit.ly/1yTq539
We also offer the following additional apps for the iPhone and iPad:
1. HVAC Residential Load Calcs for iPhone and iPad
2. HVAC Quick Load Plus
3. HVAC Quick Load
4. HVAC Toolkit
5. HVAC Pipe Sizer – Gas Low Pressure
6. HVAC Pipe Sizer - Gas High Pressure
7. HVAC Pipe Sizer – Liquid
8. HVAC Pipe Sizer – Steam
9. Steam Tables
10. Psychrometric Plus
11. Psychrometric LT
12. HVAC Pipe Sizer Plus
13. HVAC Pipe Sizer Gas Plus
14. HVAC Toolkit Ultimate
15. HVAC Equipment Locator
16. HVAC ResLoad-J
17. HVAC Psych HD}
Read more
Other
Additional Information
Version history
7.1
Nov 30, 2025
1. Added a Share button to the iPhone and iPad versions of the app, so you can now text, email, and download reports.
2. Updated help.
7.0
Oct 28, 2025
1. Fixed issue with Global Settings form crashing on iPad with iOS 8.x or above.
