Best Ductemissiontool Apps

25+ iOS apps curated and reviewed

3.9 avg rating
12 free apps
Updated May 2026

WinFab is the household name in ductemissiontool, but it's far from the only option. We track 25+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Ductemissiontool

Thermaflex Duct Calculator#3

Thermaflex Duct Calculator by Gastite Products LLC

Worth Considering
🔧 Utilities
2.0(1 ratings)
Free
Thermaflex Duct Calculator screenshot 1

This convenient application allows HVAC engineers to easily determine the smallest recommended duct size for their installation, based on specific volume and friction loss. Simply select the product, friction loss, and volume, and the app will calculate the velocity and display the appropriate duct size for your application.

More Ductemissiontool apps to explore

4
Engineering Cookbook
Engineering Cookbook
Engineering Cookbook
by Loren Cook Company
Free

This convenient reference guide provides mechanical designers with quick access to frequently needed information, covering topics such as fan basics, system and duct design, and heating and refrigeration. Get instant access to essential data, formulas, and conversion factors to streamline your design work.

🔍 Reference
(6)
5
Quietflex Ductulator
Quietflex Ductulator
Quietflex Ductulator
by Goodman Manufacturing L.P.
Free
🔧 Utilities
(1)
6
HVAC Duct Size Calculator
HVAC Duct Size Calculator
HVAC Duct Size Calculator
by Alan Cave
$0.99

This application helps HVAC design professionals determine optimal duct sizes with precision, offering a list of suitable even-sized ducts at various aspect ratios. It features an intuitive interface for easy adjustments and calculations, making it a valuable tool for streamlining duct sizing tasks.

🔧 Utilities
(1)
7
DALC
DALC
DALC
by SMACNA
Free

This application helps engineers, architects, designers, and contractors estimate air leakage from ductwork and determine pass/fail marks for duct air leakage tests. It allows users to calculate total allowable leakage for multiple ductwork sections and provides suggested leakage classes based on industry standards.

💼 Business
(26)
8
Duct Calculator Elite
Duct Calculator Elite
Duct Calculator Elite
Ducting Size Calculator
$6.99

This ducting size calculator simplifies the job of duct sizing for HVAC professionals, allowing users to calculate duct size, velocity, pressure drop, and flow rate for ductwork with precision and ease. Download the app to streamline your duct sizing calculations and take advantage of customizable preference settings and accurate solver equations.

🔧 Utilities
(220)
9
Greenheck Toolbox
Greenheck Toolbox
Greenheck Toolbox
by Greenheck
Free

This application offers two essential tools for HVAC professionals: a Fan Law Calculator to determine fan performance by modifying existing measurements, and a Ductulator to quickly size HVAC duct based on various inputs. By using these tools, users can easily calculate and determine essential parameters for their HVAC systems.

🔧 Utilities
(3)
10
HVAC Duct Sizer
HVAC Duct Sizer
HVAC Duct Sizer
HVAC duct sizing and more...
$5.99

This application helps HVAC professionals quickly and easily size ducts using the constant friction method, with features to analyze existing duct systems and generate reports. Download the app to perform duct sizing analysis, track equipment, and access a range of HVAC calculation tools.

🔧 Utilities
(8)
11
Triple J Ductwork
Triple J Ductwork
Triple J Ductwork
by BiznetIS Net Inc
Free
🔧 Utilities
(2)
12
AmpLookUp
AmpLookUp
AmpLookUp
Underground Ampacity
Free

Simplify your underground electrical design with this tool that quickly looks up NEC data for ampacity calculations, helping you avoid tedious manual lookups and ensure accurate sizing, especially for high-demand applications. Get started with your duct bank calculations today.

🔧 Utilities
(2)
13
DuctSizeCalc
DuctSizeCalc
DuctSizeCalc
by Technical Data Service Co.,Ltd.
$2.99

This application helps users easily select the size of air conditioning ducts using the constant-pressure method by simply inputting the wind amount and tapping the calculation button. It allows users to calculate wind amount, pressure loss, and wind velocity for arbitrary duct sizes, making it a useful reference tool for creating blueprints and working drawings.

📊 Productivity
(1)
14
Prihoda
Prihoda
Prihoda
by Příhoda s.r.o.
Free
🔧 Utilities
(1)
15
Spiralite Duct Sizer
Spiralite Duct Sizer
Spiralite Duct Sizer
by Khansaheb Industries Owned By Khansaheb Investment One Person CO LLC
Free
🔧 Utilities
(0)
16
PAM tools
PAM tools
PAM tools
Ductile iron pipe calculator
Free

This application helps engineers and design offices calculate essential parameters for sizing and installing ductile iron pipelines for various networks, including water, sewer, industry, and irrigation. It offers seven calculation tools to determine factors such as pressure, depth, and joint requirements, making it easier to design and install pipelines efficiently.

🔧 Utilities
(0)
17
Duct Sizer Calc HVAC
Duct Sizer Calc HVAC
Duct Sizer Calc HVAC
by Rizvan Adzhoian
$0.99
🔧 Utilities
(0)
18
Elbow Calculator
Elbow Calculator
Elbow Calculator
Piping Reference Tool
Free
🔧 Utilities
(0)
19
Piping Fabrication App
Piping Fabrication App
Piping Fabrication App
For Piping Fabricators.
$9.99
📊 Productivity
(0)
20
Fan Spec Performance
Fan Spec Performance
Fan Spec Performance
by Muralidhar Shenoy
$3.99
🔧 Utilities
(0)