Tesla’s panoramic glass roof brings sleek appearance yet suffers severe overheating under strong sunlight, nicknamed “oven overhead” by car owners. The carmaker recently published a new suction-type air conditioning patent to fix localized cabin heat, while numerous netizens comment a physical sunshade would be a simpler solution.

The patented design upgrades the whole HVAC layout with special air inlets arranged along dashboard edge and ceiling lining to suck hot air gathered by solar radiation directly into air-condition plenum for filtration and cooling before circulating back to cabin. Compared with traditional mixed cooling, the temperature gap inside drops from 21℃ to 12℃, cutting compressor and fan power consumption to save EV electricity and improve driving range.

Equipped with intelligent sensors, the system monitors sunlight and indoor temperature in real time and activates local suction only when necessary to avoid continuous high-load AC operation. The pipeline serves dual purposes: extracting hot air for cooling in summer and delivering warm air to defrost front windshield in winter, sharing similar energy-saving logic with Tesla’s vehicle heat pump. Public opinions diverge sharply: some praise the underlying technical upgrade for better thermal control, whereas most netizens argue a retractable physical sun curtain is cheaper and more practical, questioning Tesla’s roundabout high-cost patent development.