SMACNA Duct-U-Lator is a digital HVAC duct sizing tool for engineers and contractors that automates airflow and friction loss calculations on iOS.
The App DNA
What makes this app unique?
The tool removes the cognitive load and manual error risk of using physical slide-rule ductulators during on-site ventilation system design.
For HVAC engineers, contractors, and technicians requiring portable duct sizing tools for on-site calculations.
What does it look like?
Key features
Calculates dimensions for rectangular, round, and oval ducts based on CFM, friction loss, and velocity inputs.
Updates duct dimensions instantly as users adjust input variables, reducing time spent on manual calculations.
Determines sizes for a given velocity and friction loss rate at the same time, speeding up complex design workflows.
How much does it cost?
The app is provided as a free utility to support HVAC professionals using SMACNA guidelines.
Velocity
Dormant developmentopaqueShow more...
SMACNA Duct-U-Lator has seen no development activity for 686 days. The lack of updates over this extended period indicates the project is no longer receiving active maintenance or feature support. There is no evidence of recent technical improvements or content additions.
Who built it?
User Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for SMACNA Duct-U-Lator
How's the Business market?
SMACNA Duct-U-Lator holds a niche position in the Business category as a specialized utility for HVAC professionals. With only one rating and no updates since October 2024, its market presence is limited to a legacy user base rather than active growth.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for SMACNA Duct-U-Lator
Where is it heading?
The HVAC utility market is shifting toward integrated, cloud-connected design suites that offer persistent project storage. SMACNA Duct-U-Lator remains a static, offline-only tool, which will likely erode its user base as professionals prioritize tools that sync with their broader design workflows.
- The 22-month development silence indicates the tool is in maintenance mode, which will eventually lead to technical obsolescence on newer iOS versions.
The SWOT
- Automated calculation engine reduces human error in complex air distribution design.
- Integrating cloud-based project saving would address the lack of persistent design storage.
Next best moves
Audit the codebase for critical OS compatibility issues because the app has not been updated in 22 months → prevent sudden app store removal.
The counter-intuitive read
The tool's simplicity is its primary barrier to entry…
Read the full takeSince the last report: The competitive outlook for SMACNA Duct-U-Lator has shifted from stable to declining due to the persistent 686-day development gap and the emergence of cloud-connected design alternatives.
Bottom line
The lack of development activity over the last 22 months suggests SMACNA Duct-U-Lator is in a sunset phase, leaving the user base vulnerable to more active alternatives that offer cloud-connected design workflows.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is SMACNA Duct-U-Lator suitable for professional HVAC design?
Does SMACNA Duct-U-Lator require an internet connection?
Are there alternatives to SMACNA Duct-U-Lator?
Sources
- [1] App Store, source
Report last updated