♨️ Heat Pump vs Gas Boiler: One Winter Day of COP, Heat Loss, Cost and CO2

A Blender-built 3D cutaway house with an outdoor unit, a live refrigerant loop (compressor, condenser, expansion valve, evaporator) and a gas boiler. Follow a winter day of outdoor temperature to see the heat pump's COP as a fraction of the Carnot limit, heat loss UA times temperature difference, frost and defrost penalty, sizing, running cost and CO2 against a gas boiler at four insulation levels.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install