Best Free Ductulator Apps

38+ iOS apps curated and reviewed

4.1 avg rating
17 free apps
Updated June 2026

With an average user rating of 4.1★, the free ductulator category is one of the App Store's strongest. Browse all 38+ apps we track, sorted so the most loved ones surface first.

Top Picks for Free Ductulator

More Free Ductulator apps to explore

4
Digiduct
Digiduct
Digiduct
Duct-Sizing App
Free

This HVAC duct-sizing app utilizes ASHRAE Fundamentals equations, offering accurate sizing for rectangular, round, and flat oval ducts with customizable dimensions and intelligent location parameters. Ensure precision in your HVAC designs by leveraging the unique features of this app.

🔧 Utilities
(10)
5
PT Ductulator
PT Ductulator
PT Ductulator
Duct Calculator
Free
📊 Productivity
(0)
6
Gemaire HVAC Pro+
Gemaire HVAC Pro+
Gemaire HVAC Pro+
HVAC Tools
Free

Access a wide range of HVAC tools and product information on-the-go with Gemaire's mobile app. Simplify your HVAC tasks and save time with this handy tool, whether you're on-site, on the road, or relaxing at home. Ideal for HVAC professionals looking to streamline their workflow.

📊 Productivity
(798)
7
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
HVAC Sizing & Psychrometric
Free
🔧 Utilities
(7)
8
DuctCalc.Ca
DuctCalc.Ca
DuctCalc.Ca
Ductulator Duct Calculator
Free

This duct calculator app allows users to size ducts using the Equal Friction Method and Velocity Method, calculating dimensions and air velocity for round and rectangular ducts, with the option to subscribe for full airflow functionality. By subscribing, users can access the full range of airflow calculations and use the app offline, making it a convenient tool for duct sizing and engineering applications.

🔧 Utilities
(20)
9
Ductalator
Ductalator
Ductalator
HVAC Duct Sizing Calculator
Free
📊 Productivity
(0)
10
Homans HVAC Pro+
Homans HVAC Pro+
Homans HVAC Pro+
HVAC Tools
Free

This mobile app provides HVAC professionals with on-the-go access to product information, tools, and resources to streamline their work, including order tracking, duct calculation, and product availability. By downloading the app, professionals can save time, increase efficiency, and stay connected with their supplier for expert technical support and exclusive offers.

📊 Productivity
(63)
11
Ductulator
Ductulator
Ductulator
by Simon Leroux
Free

This application is a simple and efficient calculator for determining ventilation duct dimensions, specifically designed for engineers, architects, and contractors. It enables users to quickly calculate equivalent round diameters for square ventilation ducts, convert duct dimensions, and obtain metric equivalences, making it an essential tool for mechanical ventilation, air conditioning, and heating projects.

📊 Productivity
(2)
12
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)
13
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)
14
Duct Calculator
Duct Calculator
Duct Calculator
by OMIKRON MAKINE MUHENDISLIGI IC VE DIS TICARET SANAYI LIMITED SIRKETI
Free

This mobile application allows users to easily calculate duct sizes and make necessary adjustments. Download it now to simplify your duct calculations and take control of your projects.

🔧 Utilities
(1)
15
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
by Designstein, llc
Free

Get advanced solutions for HVAC problems with an interactive app that guides technicians through repair steps. Simplify complex issues and enhance your repair processes.

🔧 Utilities
(185)
16
Ductulator - Duct Sizing
Ductulator - Duct Sizing
Ductulator - Duct Sizing
HVAC Duct Design Calculator
$3.99
📊 Productivity
(272)
17
Baker HVAC Pro+
Baker HVAC Pro+
Baker HVAC Pro+
HVAC Tools
Free
📊 Productivity
(570)
18
Peirce Phelps HVAC Pro+
Peirce Phelps HVAC Pro+
Peirce Phelps HVAC Pro+
HVAC Tools
Free

This mobile app provides HVAC professionals with on-the-go access to product information, tools, and resources to make their job easier, including real-time inventory, warranty verification, and equipment searches. By downloading the app, professionals can streamline their workflow, save time, and stay connected with the supplier for special offers and expert technical support.

📊 Productivity
(50)
19
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
HVAC Tools
Free

This mobile app is an HVAC "Easy Button" that provides access to product information, useful tools, and expert technical support, making it easier for professionals to work efficiently. With the app, users can view product information, search for equipment, verify warranty registrations, access technical support, and utilize various calculators and tools to streamline their work.

📊 Productivity
(42)
20
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
Construction Math & Trade Pro
Free
$29.99 | 100% OFF

This ultimate calculator for HVAC professionals and sheet metal specialists simplifies complex calculations with precision tools for ducting offsets, angle measurements, and dimensional math. Try it out with a free trial and transform your workflow to increase accuracy, eliminate errors, and boost productivity with every calculation.

🔧 Utilities
(40)