Vaillant Mounting / Anti‑Vibration Isolation Problem

Outdoor unit vibrates excessively and transmits noise into the building

Advertisements

Possible Causes

Outdoor unit not level, Missing or deteriorated rubber feet, Loose mounting bolts on wall brackets, Refrigerant pipes rigidly fixed to structure

How to Fix / Troubleshooting

Safety: Turn off power before working around the outdoor unit. Use appropriate lifting techniques or assistance.

  • Check level: Use a spirit level to ensure the outdoor unit is level. Adjust bracket or pad as needed.
  • Inspect rubber feet: Replace cracked or missing anti‑vibration pads under the unit feet.
  • Tighten bolts: Tighten all mounting bolts on wall brackets or floor stands.
  • Isolate piping: Insert foam or rubber sleeves where refrigerant pipes contact walls or brackets to reduce vibration transmission.
Advertisements

Repair Difficulty

Easy 2/5

Required Part

Outdoor Unit Mounting Feet / Anti‑Vibration Pads
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements