Sub-Zero Making Buzzing or Humming Noise
Making Buzzing or Humming Noise is usually one of a small number of specific, repairable causes — here's what to check and when it's worth calling a professional.
Common Causes
A unit shimmed into an out-of-square Victorian opening
Pre-war framing has moved for a century, and a cabinet that is no longer square lets the compressor mounts resonate against the casework instead of isolating.
A failing fan motor
Evaporator or condenser fan bearings wear out gradually, producing noise well before the fan actually stops running.
Loose or vibrating panels
Cabinet panels or compressor mounts that have loosened over time can resonate against nearby surfaces.
What You Can Check Yourself
Parts That Most Likely Need Replacing
Based on symptoms like this, these are the components our technicians check first. The exact part depends on your model and what we find during diagnosis.
In and around San Rafael
San Rafael — The county seat and its largest city, spanning pre-war stock around Dominican and a large mid-century tract build through Terra Linda. We also cover Santa Venetia, Lucas Valley-Marinwood across Central Marin.
ZIP codes we cover in San Rafael: 94901, 94903, 94912, 94913, 94915, 94964, 94974
Most cases like this are fine to schedule within a day or two, though it's worth having looked at before it gets worse. If you're seeing a code on the display alongside this issue, our Sub-Zero error code guide can help narrow down the cause before we arrive. Either way, our repair service covers same-day diagnosis and a flat-rate quote before any work begins.
Common Questions About Making Buzzing or Humming Noise
Can I keep using my Sub-Zero appliance while this happens?
Will making buzzing or humming noise go away on its own?
How much does this repair typically cost?
How long does a typical repair visit take?
Do you offer a warranty on the repair?
Do you service Sub-Zero appliances in my area?
Still having this issue?
Same-day diagnosis, genuine OEM-compatible parts, warranty of up to 1 year.
*SubZero Repair San Francisco is an independent repair company and is not affiliated in any way with Sub-Zero, Inc., Wolf Appliance, Inc., or any of their distributors. We are not a factory service provider and specialize exclusively in out-of-warranty appliance repairs.