Xiaomi SU7 Thermal Management Parts List: Compressors, Pumps and Heat Exchangers

Thermal management decides how an EV behaves in winter and how long its cells last, yet the components are usually buried and rarely listed. This collection covers the SU7 thermal stock on hand: the air conditioning compressor, evaporator and blower, PTC heater, thermal management module, water valves, desiccant bottle and the pipework that links them.

What the thermal set covers

The refrigeration side is complete enough to study on its own: air conditioning compressor, evaporator assembly with blower assembly, and the desiccant bottle that protects the circuit. Heating is handled by a PTC heater, which is the component that determines winter range more than any other single part on a heat-pump-less vehicle. Distribution and storage follow: the thermal management module with its antifreeze bottle, the thermal management water valve, cabin and dashboard air vents, the full set of vehicle coolant pipes, and the washer bottle hose among the smaller items.

Parts list 9 items

Refrigerant and coolant lines are drained before dispatch. Seals and O-rings are supplied as received and should be replaced before reuse.

Thermal benchmarking angles

Two questions drive most of the value here. First, how the circuits are split - count the water valves and note whether cabin, battery and drive unit share a loop or run separate ones, because that single decision explains most of the winter performance gap between platforms. Second, how much heating is resistive: the PTC heater's rated power and its mounting position tell you whether the platform relies on heat pump operation or falls back on direct electrical heating. For the compressor, the useful comparison is displacement range and whether it is a scroll or piston design.