Understanding and Caring for the Condenser Fins on Your Outdoor Unit
Thank you for contacting us about the condition of the condenser fins on your outdoor air conditioning unit.
The condenser fins are made from thin aluminium, which allows the system to transfer heat efficiently and operate at peak performance. Because of this lightweight design, the fins can sometimes appear slightly bent — this can happen during transport, installation, or when other work is carried out near the unit.
Is This Normal?
Yes.
Minor bending or flattening of the fins is normal and does not affect the performance or lifespan of your air conditioner.
As a guideline, if less than 5% of the fin surface area is affected, the system will continue to work as intended.
What You Can Do
If you notice some fins that are bent or misshapen, they can be gently straightened to help maintain good airflow and cooling performance.
This is a simple maintenance step that can be performed by your installer or service technician — no parts need to be replaced.
How to Straighten the Fins
Turn off the power to the outdoor unit before starting.
Using a fin comb set or a flat-blade tool, gently straighten any bent fins.
Take care not to press too hard — the fins are delicate.
Once straightened, ensure the surrounding area is clear of debris to allow proper airflow.
When to Call a Professional
If a large section of fins appears damaged or you’re unsure how to proceed, we recommend contacting your installing technician or an authorised Fujitsu General service agent. They can assess and correct the issue safely.