Full DIY installation is not advised, as heat pumps require professional refrigerant handling, electrical wiring and system commissioning. Improper installation causes safety risks, faulty operation and voided warranties.
Risks You Must Know for DIY Installation
Warranty Risk: For most domestic brands, installation by non‑professionals will directly void the full‑unit warranty. A small number of overseas DIY‑oriented models permit self‑installation, yet strict compliance with the instruction manual is mandatory.
Electrical Safety: High‑power heat pumps require a dedicated circuit breaker and proper earthing. If you are unfamiliar with high‑voltage electricity, always hire a licensed electrician.
Refrigerant Safety: R32 is mildly flammable and R290 is flammable. Untrained personnel are strictly prohibited from opening the refrigerant circuit. (EMSD)
Wall drill holes shall slope downwards to ensure condensate drains outdoors and prevent water leakage and indoor flooding.
