About HVACLogic
HVACLogic was created to replace black-box marketing lead-gen calculators with transparent, deterministic engineering tools. We believe HVAC design engineers, mechanical contractors, and building scientists deserve accurate math with visible physical losses.
Our Engineering Charter
No Lead-Gen Gates
Zero forced email captures, zero phone number solicitations, and zero gated results. Every calculation output, chart, and exportable report is 100% accessible immediately.
First-Principles Physics
Calculations are derived directly from published thermodynamics, fluid mechanics, and national code standards (ASHRAE, ACCA, SMACNA, EPA, and IECC).
Zero-Database Privacy
All equations execute client-side directly inside your browser. No project floor plans, load data, or customer parameters are stored on external tracking servers.
Peer-Review & Editorial Verification Process
Every formula implemented in HVACLogic undergoes a multi-stage validation pipeline before deployment:
- Code-Standard Reference Mapping: The governing mathematical model is cross-referenced against active ASHRAE/ACCA editions.
- Unit Benchmark Validation: Automated Vitest test suites assert numerical accuracy against published ACCA Manual J/D tables and NIST REFPROP data points.
- Real-World Derating Verification: Loss penalties (such as flexible duct sag or refrigerant temperature glide) are benchmarked to prevent under-sizing in field installations.
- Regular Code Updates: Formulas are audited annually to maintain full compliance with updated International Energy Conservation Codes (IECC) and EPA AIM Act phase-down rules.
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