HVAC Sourcing from China: Boards & Mini-Splits
2 resources tagged with "Hvac"
HVAC sourcing from China splits into finished units and the control electronics behind them. On the unit side, OEM inverter mini-split air conditioners run 9,000–24,000 BTU at SEER2 20–22 on R32 refrigerant, needing ETL and AHRI certification for North America. On the component side, the DC inverter control board (PCBA) is the part that decides reliability — it switches mains voltage and drives the compressor, so QC has to cover creepage/clearance, mains isolation, and burn-in, not just functional test. The pitfall is buying on BTU and price while ignoring the inverter board's component quality, which is where most field failures originate.
HVAC sourcing covers air conditioners, heat pumps, and their control boards. The key pitfall is mains-voltage safety: an inverter control PCBA must meet creepage/clearance and isolation requirements, and a finished mini-split needs the right refrigerant (R32/R410A) and AHRI/ETL ratings for its market — under-speccing any of these surfaces as failures or customs rejection later.
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FAQ
What certifications do mini-split ACs need for North America?
Typically ETL or UL safety listing plus an AHRI performance certification for the SEER2 rating, and EPA considerations for the refrigerant. R32 units are increasingly standard; confirm the certification covers the exact model and capacity you are importing.
What should QC cover on an AC inverter control board?
Beyond functional test, inspect creepage and clearance distances, mains-to-low-voltage isolation, solder quality on high-current paths, and run a burn-in at load. These mains-voltage checks catch the defects that cause field failures and safety issues.
What MOQ and lead time are typical for OEM HVAC?
OEM mini-split units usually start around a few hundred units with multi-week lead times due to tooling and certification; control boards (PCBA) can start lower, often around 500–1,000 boards depending on the design and component sourcing.
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