Fan Maintenance

Keeping fans running: lubrication intervals, wheel cleaning, belt and bearing checks, corrosion control and what to record after each service.

Multimeter used to measure a fan capacitor on the capacitance range
By longwell / August 21, 2026 / Fan Engineering Guides

How to Test a Fan Capacitor with a Multimeter

Testing a capacitor takes a minute once the safety steps are done prop...

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Wheel puller fitted to a stuck blower wheel on a motor shaft
By longwell / August 21, 2026 / Fan Engineering Guides

Removing a Stuck Blower Wheel (Puller Trick)

A hub that has spent years on a shaft in a damp cabinet does not come ...

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Furnace blower running continuously with control board access panel open
By longwell / August 21, 2026 / Fan Engineering Guides

Furnace Blower Won’t Turn Off — Fix

A blower that runs continuously is usually being told to, either by a ...

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Cleaning a mini-split blower wheel cross-flow drum inside the indoor unit
By longwell / August 21, 2026 / Fan Engineering Guides

Cleaning a Mini-Split Blower Wheel

The cross-flow drum inside a mini-split collects a film of dust and bi...

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Range hood blower motor being removed from a cooker hood canopy
By longwell / August 21, 2026 / Fan Engineering Guides

Range Hood Blower Motor Replacement

A range hood that stops pulling air is not always a dead motor. Grease...

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