Open Source TypeScript Physics Software

HVACLogic is an open-access, deterministic engineering suite and computational laboratory for building science, fluid dynamics, and HVAC electrification. All 21 engineering calculation tools run 100% client-side in pure TypeScript with zero database tracking, zero telemetry, and instant job-site computation. Core Capabilities & Governing Standards: * Air Distribution & Duct Hydraulics: Colebrook-White friction factor equations solved via Newton-Raphson numerical iterations, Darcy-Weisbach head loss, and ACCA Manual D sizing protocols. * Cooling & Thermal Loads: ACCA Manual J (8th Edition) residential heat loss and heat gain, Manual S equipment sizing, and AHRI 210/240 performance ratings. * Heating & Electrification: Inverter cold-climate heat pump thermal balance point models, low-ambient COP deratings, and NFPA 54 combustion air sizing. * Refrigerant Diagnostics: NIST REFPROP saturation curves, zeotropic A2L temperature glide evaluation (R-454B, R-32), and target superheat