Washer Vibrating Loudly During Spin Cycle: 6 Causes

Your washing machine sounds like a jet engine during spin cycle. It's shaking the floor, rattling the walls, and walking across the laundry room. This is the third most common washer complaint we hear in Port St. Lucie — and it ranges from a 30-second DIY fix to a serious mechanical issue.

1. Unbalanced Load (Most Common)

A single heavy item (like a comforter or bath mat) bunches to one side of the drum during spin. The uneven weight distribution causes violent shaking. Fix: Open the lid/door, redistribute the items evenly around the drum, and restart the spin cycle. For heavy items, add a few towels to balance the weight. This solves 50% of vibration calls for free.

2. Washer Not Level

All four feet must be firmly on the floor with no rocking. If one foot is even slightly off the ground, the washer will vibrate during high-speed spin. Place a level on top of the washer — adjust the leveling feet by turning them clockwise (lower) or counterclockwise (raise). Lock each foot tight with the lock nut once level. On tile or laminate floors in Florida homes, use anti-vibration pads under all four feet (– on Amazon).

3. Shipping Bolts Still Installed (New Washers)

If your washer is newly installed and vibrating aggressively, check for shipping bolts. Front load washers have 3–4 large bolts on the back panel that lock the drum during transport. If the delivery team forgot to remove them, the drum can't move freely on its suspension and the entire machine shakes violently. Remove the bolts with a wrench and save them (you'll need them if you ever move the washer).

4. Worn Shock Absorbers or Suspension Rods

Front load washers use shock absorbers; top load washers use suspension rods. Both dampen the drum movement during spin. After 5–10 years, these wear out and the drum bounces excessively. You can test by pushing down on the drum — it should spring back once and settle. If it bounces multiple times, the suspension is worn. Replacement cost: – at Treasure Coast Appliance Repair.

5. Worn Tub Bearings

Tub bearings allow the inner drum to spin smoothly inside the outer tub. When they wear out, you'll hear a loud rumbling, grinding, or roaring sound during spin — plus increased vibration. This is a significant repair (–) because the entire inner tub assembly must be removed. For washers over 8 years old, compare the repair cost against replacement. Call (772) 353-5791 for a diagnosis.

6. Loose or Broken Counterweight

The counterweight is a heavy concrete block attached to the tub that stabilizes the drum during spin. If the mounting bolts loosen (common after 5+ years), the counterweight shifts and creates severe vibration and banging. Tightening the bolts is a quick, inexpensive fix (–). If the counterweight is cracked or broken, it needs replacement (–).