Press Release

Carmel Software Announces That It Has Released a Major Update To Its Very First Mobile App: HVAC Duct Sizer

The HVAC Duct Sizer is the perfect tool for HVAC technicians, designers, architects, and even home owners.
San Rafael, CA
March 1, 2014
Contact: Masha O'Brien
Phone: 800-339-6030
Carmel Software announces that it has released a major update to its very first mobile app ever developed: the HVAC Duct Sizer (Universal). This app now runs on the Apple iPad in addition to the iPhone. This means that the same app will run on both devices and adjust its screen accordingly.

The HVAC Duct Sizer application allows users to quickly size one or more runs of duct using the constant friction method. Think of it as a digital version of the classic Trane Ductulator. It allows users to size new duct systems by inputting air flow and velocity or friction loss. It also allows users to size existing systems by inputting duct dimensions and air velocity. Additional parameters can be specified such as duct material type, aspect ratio, duct shape, air temperature and pressure.

"When we first released this app 4+ years ago, there were only 10 or so HVAC apps on iTunes. Today, there are 1000s. Our Duct Sizer app has sold 1000s worldwide over the past 4 years and has always been the highest ranking HVAC duct sizer app on iTunes. Now, this app is available for iPad users," says Stephen Roth, PE, Principal of Carmel Software.

The HVAC Duct Sizer is the perfect tool for HVAC technicians, designers, architects, and even home owners. Please go to for more information.

About Carmel Software

Carmel Software Corporation has been a leader in HVAC design software since 1995. In fact, our software currently powers the analysis capabilities of Autodesk's (makers of AutoCAD) 3D modeling software tools. Also, ASHRAE, Mitsubishi Electric, Trane, Johnson Controls, the U.S. Department of Energy, Honeywell, Carrier Corp., large western utilities, and other Fortune 500 building-services companies rely upon Carmel to develop custom mobile and desktop applications for their clients. We currently offer more than 40 iOS and Android mobile apps for HVAC.
Media Contact: Lucy Gooden, Phone: 800-339-6030