Ductulator - Duct Sizing

Name: Ductulator - Duct Sizing
Price: 3.99 USD
Rating: 4.7 (244 reviews)
Author: Wassim Murr

HVAC Duct Design Calculator

$3.99 · Designed for iPad

244 Ratings
Ages

4+
Years
Category

Productivity
Developer

Wassim Murr
Language

EN
+ 2 More
Size

1.2
MB

Also Included In

Duct Design Bundle

Productivity
Mechanical Engineer's Toolbox

Productivity
HVAC Design

Utilities

The Duct Sizer App designed based on surveying the needs of engineers. This is a much faster and versatile equivalent of the duct sizing charts provided by top HVAC manufacturers. Get a range of suitable duct sizes by inputting either the maximum friction rate or maximum velocity. Duct sizing for both rectangular and circular ducts. Tap on the values for velocity or friction to switch between calculation methods. Users can change between I-P and S-I units by tapping the toggle switch at the top. The detailed sizing mode allows the Engineer to adjust the duct dimensions and air flow rates, while checking the resulting friction rate and velocity which update automatically. Detailed sizing mode is typically used to analyse existing duct systems. Calculations are based on standard air 0.075 lb/ft3 (1.2 kg/m3) in clean galvanized steel or non-metallic flexible ducts. Any feedback is welcome, and will be the basis for future updates.

Ratings & Reviews

4.7

out of 5

244 Ratings

Options
04/07/2023

AS2SCHLAX
I love the App. It’s easy to use I just wish there were more options like selecting round or square duct as opposed to just only using Cfm.

Developer Response
Hello, thank you for the kind review. You could not have timed this better; we have just released our latest update, which features 'Duct Edit' mode!If there are any features that you would like to see added, let us know at welmurr@icloud.com
Options
04/07/2023

AS2SCHLAX

I love the App. It’s easy to use I just wish there were more options like selecting round or square duct as opposed to just only using Cfm.
Developer Response 04/10/2023
Hello, thank you for the kind review. You could not have timed this better; we have just released our latest update, which features 'Duct Edit' mode!If there are any features that you would like to see added, let us know at welmurr@icloud.com
Not what I was looking for
Aug 11

Brett88
Update- I got your email. I understand the way you have the app set up I just didn’t understand it before I bought the app. The function of your app is pretty much pointless for anything I need it for. If I want to size a traditional residential HVAC duct system this does not help. Your app mostly seems to be used to figure out numbers just for fun. Who cares what the velocity of 500 CFM going through 6 inch flex? You can’t get 500 CFM through 6 inch flex anyway so why would you want to know that number? End Update. You need to be able to pick 6 inch flex and then the app tell you how many CFM can go through that. The way this is set up now is just silly. I like the idea you can get velocity, but you need to know how many CFM goes through all the different sizes. Now I have to buy another app.

Developer Response
Hi, thanks for your feedback! The air flow-rate that could go through a given duct size varies depending on the friction rate or velocity you wish to set as limit. Thus, in ‘Ductulator’ mode, you can set a duct size and then check which CFM yields the Friction/Velocity limit you want; this would be the value you’re looking for, just like using the traditional ductulator! Hope this helps.Update- Ductulator is used daily by thousands of professionals to size HVAC ducts for all applications, residential included; It is definitely not ‘just for fun’ although the intuitive user interface makes it fun to use! Cheers.
Not what I was looking for
Aug 11

Brett88

Update- I got your email. I understand the way you have the app set up I just didn’t understand it before I bought the app. The function of your app is pretty much pointless for anything I need it for. If I want to size a traditional residential HVAC duct system this does not help. Your app mostly seems to be used to figure out numbers just for fun. Who cares what the velocity of 500 CFM going through 6 inch flex? You can’t get 500 CFM through 6 inch flex anyway so why would you want to know that number? End Update. You need to be able to pick 6 inch flex and then the app tell you how many CFM can go through that. The way this is set up now is just silly. I like the idea you can get velocity, but you need to know how many CFM goes through all the different sizes. Now I have to buy another app.
Developer Response Aug 14
Hi, thanks for your feedback! The air flow-rate that could go through a given duct size varies depending on the friction rate or velocity you wish to set as limit. Thus, in ‘Ductulator’ mode, you can set a duct size and then check which CFM yields the Friction/Velocity limit you want; this would be the value you’re looking for, just like using the traditional ductulator! Hope this helps.Update- Ductulator is used daily by thousands of professionals to size HVAC ducts for all applications, residential included; It is definitely not ‘just for fun’ although the intuitive user interface makes it fun to use! Cheers.
Solid app, not quite 5/5
Apr 15

NickH110110
The only thing holding the app back IMO is the omission of flat oval ducts. They’re uncommon, but it’s the only thing the app can’t do that has caused me to have to reach for the less convenient methods.
Solid app, not quite 5/5
Apr 15

NickH110110

The only thing holding the app back IMO is the omission of flat oval ducts. They’re uncommon, but it’s the only thing the app can’t do that has caused me to have to reach for the less convenient methods.
Don't be afraid to invest in this very useful tool.
12/27/2023

Enmanuel Sánchez Acosta
Excellent application. Don't be afraid to invest in this very useful tool. The application perfectly meets its objective. I recommend it 100%
Don't be afraid to invest in this very useful tool.
12/27/2023

Enmanuel Sánchez Acosta

Excellent application. Don't be afraid to invest in this very useful tool. The application perfectly meets its objective. I recommend it 100%