This is a complete, premium-grade single-file solution designed for high-performance HVAC diagnostics. ```html Free HVAC Superheat and Subcooling Calculator Tool

HVAC Calculator Tool

Professional Superheat & Subcooling Diagnostics

Superheat

Refrigerant

Suction Pressure (PSIG)

Suction Temp (°F)

Calculated Superheat

Status

Subcooling

Refrigerant

Liquid Pressure (PSIG)

Liquid Temp (°F)

Calculated Subcooling

Status