Hydronic Driveway & Entrance-Step Snow-Melt Glycol Wattage & Slab-Lag Sizer

Deterministic ASHRAE Chapter 51 snow-melting heat flux sum (sensible snow warmup + 334 kJ/kg latent fusion + wind evaporation + Stefan-Boltzmann sky loss) engine (.pdf, .dxf, .csv, .json) built for Uponor, Viega, Tekmar, Alfa Laval — zero-upload ephemeral Wasm RAM execution.

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