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Why is my washing machine shaking violently?
A washing machine shaking violently on spin usually has one of six causes. Find yours with a quick phone test, fix it, and know when to call for repair.
Matching tool: Washing machine test
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Why your car vibrates at 60 mph (and how to find the cause)
Car vibrates at 60 mph but not at 40? It's usually a wheel or tire. Learn the causes, the wheel math, and how a passenger can test it with a phone.
Matching tool: Car vibration test
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Why is my house shaking at night?
Feel your house shaking at night? Trucks, trains, pumps and neighbors are the usual causes. Log it overnight with your phone and find the source.
Matching tool: House vibration logger
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How to balance a ceiling fan
How to balance a ceiling fan: tighten it, check the blades line up, then use a balancing clip. Measure each step with your phone to see if it worked.
Matching tool: Ceiling fan wobble test
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Can construction vibration damage my house?
Worried about construction vibration damage? See the published limits, how to tell new cracks from normal ones, and how to log shaking with your phone.
Matching tool: Construction monitor
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What is vibration frequency? A simple explanation
Vibration frequency is how many times something shakes each second. Learn how Hz and RPM relate, and how frequency points to the cause of a shake.
Matching tool: Frequency analyzer
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How accurate is a vibration meter app on your phone?
How accurate is a phone vibration meter? What phones measure well, where they fall short, and simple checks you can run on your own phone's sensor.
Matching tool: Accelerometer test
Vibration guides
Plain-English answers to the questions people ask when something shakes. Each guide links to a free tool you can run on your phone.