If you live in Lancaster, you know the wind. It knocks over trash cans, ruins patio umbrellas, and—believe it or not—it can destroy your air conditioners. Because many homes in the Antelope Valley (especially Westside custom homes) typically have roof-mounted package units, they are completely exposed to the elements.
In this guide, we’ll explain exactly how high winds damage HVAC systems and what you can do to protect your investment.
The "Sail Effect" on Roof Panels
Rooftop units have large metal access panels. If a localized technician leaves just one screw loose during maintenance, a 50 MPH gust can catch that panel like a sail. We have seen panels ripped clean off units, landing in driveways or swimming pools.
Once the panel is gone, the internal wiring and motors are exposed to rain, dust, and sun, leading to rapid electrical failure.
Direct Fan Blade Damage
Sometimes the wind blows so hard against the natural rotation of the condenser fan that it burns out the motor. In other cases, tumbleweeds or debris are launched into the side of the unit, smashing into the delicate aluminum fins or bending the fan blades.
Related: Should you repair wind damage or replace the whole unit?
How to Protect Your Unit
- Check Your Tie-Downs: Ensure your rooftop unit is bolted securely to the curb.
- Panel Inspection: After any service visit, verify all screws are present and tight.
- Clear the Perimeter: Remove loose items from your roof or yard that could become projectiles.
When to Call for Help
If you hear banging noises on your roof during a storm, turn off your AC immediately. Running a unit with a bent fan blade can tear the entire motor mount apart.
Need emergency help? Check our 24/7 Emergency Service page.