Residential HVAC Designer Pro
Permit Ready HVAC Designer
$2.99 · Designed for iPad. Not verified for macOS.
Design complete residential HVAC systems with Manual J load calculations, duct sizing, equipment selection, and permit-ready reports - all in one app.
Design complete residential HVAC systems from start to finish. Residential HVAC Designer Pro guides you through a professional 14-step design workflow using ACCA Manual J, Manual S, and Manual D calculation methods - the same standards used by licensed HVAC engineers.
WHAT THE APP DOES
Enter your project details step by step: building dimensions, insulation levels, window data, climate zone, room layout, internal loads, and infiltration. The app automatically calculates heating and cooling loads for every room, selects appropriately sized equipment, designs your duct system, and generates a complete permit package.
KEY FEATURES
14-step guided design wizard
Manual J heating and cooling load calculations per room
Manual S equipment selection with sensible heat ratio matching
Manual D duct sizing with velocity and pressure drop checks
Supply register and return grille scheduling
Zoning system support
Complete permit package with all calculation reports
Duct layout drawings and riser diagrams
Material takeoff with quantities
Energy code compliance notes
Save and manage multiple projects
WHO THIS APP IS FOR
Residential HVAC Designer Pro is built for HVAC contractors, mechanical engineers, energy auditors, building inspectors, and homeowners who want to understand how their HVAC system is sized and designed. Whether you are designing a new system, replacing existing equipment, or checking a contractor's work, this app gives you the tools professionals use.
DISCLAIMER
This app is intended as a design aid and educational reference. All calculations should be reviewed by a licensed mechanical engineer or qualified HVAC professional before construction or equipment purchase. Results are based on user-entered data and standard ACCA methodology. The developer makes no warranty regarding the accuracy or completeness of any calculation output.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Yuhsiu Lai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yuhsiu Lai
- Size
- 3.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 iTech Tools
