One hard winter.
16 right numbers.

Usually not, and here is the honest logic. If refrigerant is low, it leaked — gas does not wear out — so a top-up without fixing the leak buys weeks at best. And on an EV the compressor is an electrical machine: when its inverter board or motor windings fail, which is the common failure mode, no amount of refrigerant changes anything. Worse, if the compressor seized, running the system spreads metal debris through the loop. Diagnose first: error codes, pressures, whether the compressor even spins up. If the verdict is the compressor, that is what this page is for — and the loop gets flushed with a new drier when it is fitted.

Very likely both — most Chinese EVs pair a heat pump with a PTC backup and switch between them silently, so the owner never sees which one is working. Which units your exact car carries depends on model, year and trim: the same nameplate can hide different thermal architectures between a 2021 and a 2023 build. Two reliable routes: check your own specification sheet, or simply send us the VIN — we check the configuration at the source before quoting. Never buy a heater or compressor off a forum guess about "what this model has"; the VIN answers it in one step.

Case by case, and we will tell you which case is yours. Water pumps and PTC heaters are simple, robust units where a tested take-off often makes sense. Compressors deserve more caution: a used unit carries its previous oil history and wear invisibly, so for compressors we usually quote new first — China-direct pricing keeps new units competitive — and offer take-offs where verified stock exists. Any take-off we do supply ships documented as: used take-off part, tested, working — with a 3-month warranty. That sentence goes on the quote and the contract, not into a chat bubble. We quote both routes side by side; you choose with real numbers in hand.

The installing workshop — and that is not us dodging, it is how the industry works everywhere. Disconnecting the traction battery, verifying zero volts, evacuating and recharging the circuit with the correct POE oil: those steps need trained hands and proper equipment on site, wherever the car is. Our responsibility sits before that and is written on the quote: the correct unit, matched to your VIN, in the right voltage class, nameplate and connector photographed before dispatch, oil and refrigerant spec stated. If your workshop has questions about the unit mid-job, they can ask us directly — a mechanic-to-supplier conversation solves in minutes what guesswork drags out for days.

Almost certainly. Thermal is one of the best-supplied families in the Chinese EV aftermarket — the same compressors, pumps and heaters go into thousands of vehicles, and the supplier system behind them (Aotecar, Huayu Sanden, Shenhai and their peers) sells openly. If you have any number, send it: even a partial segment like -8103020 or -1315010 tells us which shelf to open. If you have no number — the normal case for heat-pump modules and passenger-car PTC heaters — photograph the old unit's nameplate and add the VIN. Identification within 24 hours, with new and take-off routes quoted where both exist.

Good news first: nothing in this family contains lithium cells, so there is never dangerous-goods paperwork to slow the box down. Water pumps and PTC heaters are compact — express courier, 3–7 days door to door. Compressors are mid-size and dense; they fly courier too, billed close to their real weight, no volumetric surprises. Bus and truck units, or a fleet batch, consolidate into one crate by ground — typically 2–4 weeks at a fraction of air cost. Identification takes up to 24 hours before dispatch. Car stuck in a cold snap with no heat? Say so — the routing changes to match the urgency.