Field-first
HVAC Calculator Toolkit
Fast HVAC field calculators with clear units and copyable summaries.
Built for the Field,
Designed for Trust
Fast inputs, clear units, copyable summaries, and guidance that keeps OEM procedures first.
Fast on mobile
Calculator pages are designed for quick entry with consistent input patterns and explicit units.
Copy-ready summaries
Each calculator provides a copyable summary for job notes without forcing sign-in.
OEM-first guidance
Recommendations avoid false certainty. Results should be compared to manufacturer procedures and verified conditions.
Sign-in optional
Use calculators anonymously. Sign-in is planned for saving history and team workflows (Clerk + Convex).
PT data foundation
PT datasets are planned as versioned resources for deterministic lookups and reproducible results.
Team-ready architecture
Tier gating and Team seat limits are planned with server-side enforcement (Team default: 3 active seats).
Start with the essentials
Jump straight into the most-used field calculations. Each tool includes validation, clear units, and a copyable summary.
- Superheat & Subcooling
- Airflow / CFM
- Duct sizing (round)
- Additional charge estimate