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.
It’s ok at best
Can’t punch in duct size to see what the cfm is very limited on what you can do save your money but it gives you different duct options if that’s what your trying to do
Don't be afraid to invest in this very useful tool.
Excellent application. Don't be afraid to invest in this very useful tool. The application perfectly meets its objective. I recommend it 100%
Needs work
The new flex option isn’t working properly.
Let me reverse lookup
Love that it gives you different options for sizing but I wish I could enter a duct size and get a cfm value from it.
No Flex in duct calcs
Sadly, $2.99 spend, to discover it’s useless to me, without having the option to select “Flex” in duct calculations
Very Nice
Would love to see an option for flex.
Options
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.
Apr 13, 2024
Apr 12, 2024
Apr 10, 2024
We're always working on various improvements and new features! Introducing FLEX duct sizing, including correction factors for compressed flexible ducts.
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