Many ventilation units are replaced even though this is not always necessary. In many cases, the ventilation motor can still be perfectly reconditioned. By replacing worn parts, a ventilation motor can often function reliably for many years again.
But what exactly happens during an overhaul?
In this article, we explain step-by-step how the overhaul of a ventilation motor works.
What is an overhaul?
An overhaul means that worn parts of a ventilation motor are replaced or repaired.
The goal is to restore the motor to good technical condition without replacing the complete ventilation unit.
This can save costs and prevent unnecessary waste.
When is an overhaul necessary?
Common signs include:
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humming sound
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squeaking bearings
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vibrations
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reduced performance
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difficulty starting
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recurring malfunctions
These complaints often indicate wear of parts that can be replaced during an overhaul.
Step 1: Diagnosis
The overhaul begins with a technical inspection.
This checks:
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condition of the motor
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bearings
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fan impeller
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electronics
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housing
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connections
This determines which parts need attention.
Step 2: Disassembling the motor
Next, the ventilation motor is carefully disassembled.
During this step, parts are checked for:
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wear
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damage
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contamination
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play
This provides a clear picture of the technical condition.
Step 3: Cleaning parts
Accumulated dust, grease, and dirt are removed.
This is important because contamination can cause:
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imbalance
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additional wear
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higher energy consumption
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more noise
After cleaning, parts can be assessed more accurately.
Step 4: Replacing wear parts
During overhaul, worn parts are replaced.
For example:
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bearings
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capacitors
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fasteners
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defective electronic components
Which parts are replaced depends on the type of ventilation motor.
Step 5: Checking fan impeller and balance
The fan impeller is checked for:
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damage
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deformations
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imbalance
A well-balanced fan ensures:
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less noise
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fewer vibrations
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better performance
Step 6: Assembly
After replacing the necessary parts, the motor is reassembled.
All parts are checked for correct assembly and operation.
Step 7: Testing
After assembly, the ventilation motor is tested.
This checks, among other things:
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noise level
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vibrations
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power consumption
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performance
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correct operation
Only when the motor functions properly is the overhaul completed.
Why choose an overhaul?
An overhaul offers several advantages:
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lower costs than replacement
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less waste
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preservation of existing installation
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extension of lifespan
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sustainable solution
For many ventilation units, an overhaul is therefore an attractive choice.
Which brands are often reconditioned?
Ventilatie Service Center overhauls, among others:
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Itho Daalderop
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Zehnder
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Orcon
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Duco
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Buva
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Vasco
For many models, an overhaul is an excellent alternative to complete replacement.
Ventilatie Service Center is happy to help
Ventilatie Service Center specializes in the overhaul, repair, and replacement of ventilation motors.
Are you unsure whether your ventilation motor can still be overhauled? Based on the brand, type, and complaint, we can often quickly indicate what possibilities there are.
Frequently asked questions
What is replaced during an overhaul?
That differs per motor, but often bearings, capacitors, and other wear-prone parts are replaced.
Is overhaul cheaper than replacement?
In many cases, yes. This depends on the type of motor and the nature of the malfunction.
How long does an overhaul take?
This varies depending on the type of ventilation motor and the necessary work.
Does overhaul extend the lifespan?
Yes. By replacing worn parts, a ventilation motor can often function reliably for many years.
Links
DucoBox maintenance and overhaul
Common ventilation malfunctions and solutions
When should you overhaul a ventilation unit?
Overhaul or replace ventilation unit?
How long does a mechanical ventilation unit last?
Zehnder Comfofan makes a humming sound?
Stork CML or CMLe makes noise?
Vasco ventilation makes noise?