Clean before refrigerant charge?
Yes — rule out airflow issues first.
Mini Split Not Cooling — When Cleaning Helps
Weak cooling isn’t always low refrigerant — a dirty coil cuts airflow and efficiency.
If the filter is clean but airflow is weak, a dirty evaporator coil is a top cause. Deep cleaning often restores performance. Refrigerant leaks need an HVAC license.
Dirty system signs
- Runs constantly without reaching set temp
- Weak airflow
- Ice on coil
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