Sub-Zero Appliance Repair | San Francisco Peninsula

Sub-Zero Appliances We Service

We provide expert independent service for Sub-Zero's legendary food preservation systems.

Sub-Zero Refrigerator Repair: Built-in, integrated, and PRO series models.
Sub-Zero Freezer Repair: Upright, undercounter, and drawer freezers.
Sub-Zero Ice Maker Repair: Integrated ice systems and standalone units.

Common Sub-Zero Problems

Not cooling properly: Often related to condenser coils or compressor relays.
Inconsistent temperatures: Can indicate failing thermistors or airflow issues.
Frost or ice buildup: Usually points to a failing door seal or defrost system.
Water leaks: Typically caused by a clogged defrost drain tube.
Unusual noises: Grinding or humming from failing evaporator or condenser fans.

Is Your Sub-Zero Appliance Worth Repairing?

Sub-Zero units are premium, engineered appliances designed for decades of service. In almost all cases, repairing a Sub-Zero is highly recommended.

Replacing a built-in Sub-Zero can cost upwards of $10,000 to $15,000, not including the custom cabinetry work required for a new installation. Repairing a sealed system, replacing a compressor, or fixing a defrost issue is a fraction of the cost and extends the life of a world-class appliance.

Independent Service

Cannon Appliance is an independent appliance repair company and is not affiliated with or endorsed by Sub-Zero Group, Inc. We provide expert out-of-warranty service.

Recent Sub-Zero Appliance Repairs on the Peninsula

Atherton • 2026-08-02

Sub-Zero Refrigerator Compressor & Door Seal Repair

Dispatched senior technician to Atherton residence for a Sub-Zero PRO 48 refrigerator showing temperature fluctuations. Replaced worn door gasket seal and serviced dual compressor condenser coils. Cooling restored to optimal 37°F.

Why Cannon Appliance?

Established in 1952

We have been diagnosing and repairing complex appliances on the Peninsula for over 70 years.

Redwood City Roots

As a local, independent company, our technicians are deeply familiar with the homes and high-end kitchens of the Peninsula.

Part of Heises Plumbing

Cannon Appliance is part of Heises Plumbing, bringing together two long-established local service brands while Cannon remains strictly focused on appliance repair.

Sub-Zero FAQ

Why is my Sub-Zero refrigerator not cooling?

Cooling failures in Sub-Zero units often relate to dirty condenser coils, a malfunctioning evaporator fan, or a sealed system issue. Regular maintenance of the dual refrigeration system is required.

Why is my Sub-Zero refrigerator running constantly?

If the condenser coils are restricted by dust, the dual compressors must run continuously to maintain temperature, which can lead to premature failure.

Why is my Sub-Zero ice maker not working?

Ice maker failures can be caused by a frozen water fill tube, a faulty water inlet valve, or a defective ice maker module assembly.

Is an older Sub-Zero refrigerator worth repairing?

Yes. Sub-Zero refrigerators are premium, built-in appliances engineered to last decades. Repairing a component like a compressor is highly cost-effective compared to the extensive cost and carpentry required to replace the unit.

Does Cannon Appliance repair Sub-Zero refrigerators on the Peninsula?

Yes, our technicians provide independent Sub-Zero appliance repair throughout our verified Peninsula service area, including Atherton, Palo Alto, and Redwood City.

Sub-Zero Appliance Repair on the San Francisco Peninsula