Great Sizing App!
This is a great app for sizing ductwork, and piping. Like the UI too!
$4.99
About
Instantly calculates ductwork and piping sizes based on airflow, GPM, or lb/h. It checks results against friction and velocity limits, offering engineering estimates for HVAC professionals. Supports various materials and unit systems.
✓Instant duct and pipe sizing
✓Friction and velocity limit checks
✓Support for various materials (steel, copper, PEX, PVC)
✓Batch sizing and project scheduling
✓Customizable defaults and unit systems
✓Offline functionality
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What's New in HVAC Sizer
1.1
October 25, 2026
Added pump and fan sizing and some other hydronic goodies!
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FAQ
What is HVAC Sizer used for?
HVAC Sizer is a utility app designed to quickly calculate the appropriate sizes for ductwork and piping based on specified flow rates, friction, and velocity limits. It provides engineering estimates for HVAC professionals.
What types of ductwork and piping can HVAC Sizer size?
HVAC Sizer supports round, rectangular, and flat oval ductwork, as well as hydronic piping (water, glycol), domestic water, and steam piping. It accommodates various materials like steel, copper, PEX, PVC, and CPVC.
Does HVAC Sizer require an internet connection?
No, HVAC Sizer does not require an internet connection to function. It is designed to work offline, making it convenient for use in the field or areas with limited connectivity.
Can I save my sizing calculations with HVAC Sizer?
Yes, HVAC Sizer allows you to add results to a running schedule for each project, with automatic tag counting. You can also add notes to specific entries and export schedules as CSV files.
What are the pricing details for HVAC Sizer?
HVAC Sizer is a paid application, available for a one-time purchase of $4.99. This price grants you access to all its features without any recurring subscription fees.
Does HVAC Sizer have ads?
No, HVAC Sizer is ad-free. The developer has stated that the app contains no advertisements, ensuring an uninterrupted user experience.
On which devices can I use HVAC Sizer?
HVAC Sizer is compatible with Apple devices, specifically the iPhone and iPad. It is optimized for various screen sizes, including folded iPhones.
How often is HVAC Sizer updated?
HVAC Sizer was last updated on October 25, 2026, with version 1.1. While specific update frequency isn't detailed, this indicates ongoing support and potential for future enhancements.